Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| systemic insecticides reduce feeding, survival, and fecundity of adult black vine weevils (coleoptera: curculionidae) on a variety of ornamental nursery crops. | systemic activity of the neonicotinoids clothianidin, dinotefuran, and thiamethoxam and the anthranilic diamide chlorantraniliprole was tested against adult black vine weevils, otiorhynchus sulcatus (f.) (coleoptera: curculionidae), on astilbe, euonymus, heuchera, rhododendron, sedum, and taxus. insecticide treatments were applied to the soilless substrate of containerized plants. bioassays were conducted 12 or 13, 26, and 42 d after treatment (dat) and ran for 7 d; and feeding, mortality, and w ... | 2011 | 21510186 |
| is elytral color polymorphism in sweetpotato weevil (coleoptera: brentidae) a visible marker for sterile insect technique? comparison of male mating behavior. | the sterile insect technique (sit) is widely used for suppressing or eradicating target pest insect populations. in the eradication programs using the sit, a large number of sterile insects are marked and released in the field. in japan, cylas fonnrmicarius (f.) group (coleoptera: brentidae) weevils are marked with a fluorescent powder dye to monitor the progress of such programs. however, this monitoring technique is not fully effective because of the disappearance or contamination of the dye. ... | 2011 | 21510188 |
| visual cues are relevant in behavioral control measures for cosmopolites sordidus (coleoptera: curculionidae). | trap designs for banana root borer, cosmopolites sordidus (germar) (coleoptera: curculionidae), have been done essentially on the understanding that c. sordidus rely primarily on chemical cues. our present results indicate that these borers also rely on visual cues. previous studies have demonstrated that among the eight differently colored traps tested in the field, brown traps were the most effective compared with the performances of yellow, red, gray, blue, black, white, and green traps; maho ... | 2011 | 21510190 |
| effect of trap type, trap position, time of year, and beetle density on captures of the redbay ambrosia beetle (coleoptera: curculionidae: scolytinae). | the exotic redbay ambrosia beetle, xyleborus glabratus eichhoff (coleoptera: curculionidae: scolytinae), and its fungal symbiont raffaellea lauricola harrington, fraedrich, and aghayeva are responsible for widespread redbay, persea borbonia (l.) spreng., mortality in the southern united states. effective traps and lures are needed to monitor spread of the beetle and for early detection at ports-of-entry, so we conducted a series of experiments to find the best trap design, color, lure, and trap ... | 2011 | 21510198 |
| species dependent influence of (-)-alpha-pinene on attraction of ambrosia beetles (coleoptera: curculionidae: scolytinae) to ethanol-baited traps in nursery agroecosystems. | field-based trapping experiments were conducted in ohio in 2003, 2004, and 2008 to determine the influence of (-)-alpha-pinene on the attraction of exotic and native ambrosia beetles (coleoptera: curculionidae: scolytinae) to ethanol-baited traps. in 2003 and 2004, we determined the effect of adding an (-)-alpha-pinene ultrahigh release lure (uhr; 2 g/d at 20 degrees c) to traps baited with an ethanol uhr lure (0.39 g/d). feweranisandrus (xyleborus) sayi (hopkins) and xyleborinus saxeseni (ratze ... | 2011 | 21510207 |
| the pathogenicity of beauveria bassiana: what happens after an endophytic phase in plants? | the banana weevil cosmopolites sordidus (germar) (coleoptera: curculionidae) is a serious constraint to banana (musa spp.) production throughout the world. the entomopathogenic fungus beauveria bassiana (balsamo) vuillemin (ascomycota: hypocreales) offers a potential weevil management option, but conventional delivery mechanisms have limited its success. as an endophyte, however, b. bassiana can be efficiently delivered to banana planting materials for the potential management of c. sordidus. ho ... | 2010 | 21539245 |
| study on weevil pests of oilseed rape at keszthely, hungary. | one of the most important pests of rape in early spring are weevils (ceutorhynchus spp.). the aim of our studies was to identify the occurring weevil species and to study their emergence, swarming, mating and damage. our observations were performed on an experimental plot at keszthely (hungary, zala county) in early spring of four consecutive years. following species were collected and identified: ceutorhynchus pallidactylus marsham, ceutorhynchus obstrictus marsham, ceutorhynchus napi gyllenhal ... | 2010 | 21539249 |
| comparison of the α-amylase inhibitor-1 from common bean (phaseolus vulgaris) varieties and transgenic expression in other legumes-post-translational modifications and immunogenicity. | the seeds of peas (pisum sativum) and chickpeas (cicer arietinum) expressing a gene for α-amylase inhibitor-1 (αai) from the common bean (phaseolus vulgaris) are protected from damage by old world bruchids (pea and cowpea weevils). here, we used electrospray ionization time-of-flight mass spectrometry to compare the post-translational modifications of αai from transgenic sources with the processed forms of the protein from several bean varieties. all sources showed microheterogeneity with differ ... | 2011 | 21542649 |
| limited response of ponderosa pine bole defenses to wounding and fungi. | tree defense against bark beetles (curculionidae: scolytinae) and their associated fungi generally comprises some combination of constitutive (primary) and induced (secondary) defenses. in pines, the primary constitutive defense against bark beetles consists of preformed resin stored in resin ducts. induced defenses at the wound site (point of beetle entry) in pines may consist of an increase in resin flow and necrotic lesion formation. the quantity and quality of both induced and constitutive d ... | 2011 | 21551357 |
| population dynamics in changing environments: the case of an eruptive forest pest species. | in recent decades we have seen rapid and co-occurring changes in landscape structure, species distributions and even climate as consequences of human activity. such changes affect the dynamics of the interaction between major forest pest species, such as bark beetles (coleoptera: curculionidae, scolytinae), and their host trees. normally breeding mostly in broken or severely stressed spruce; at high population densities some bark beetle species can colonise and kill healthy trees on scales rangi ... | 2011 | 21557798 |
| resource concentration dilutes a key pest in indigenous potato agriculture. | modern restructuring of agricultural landscapes, due to the expansion of monocultures and the resulting elimination of non-crop habitat, is routinely blamed for rising populations of agricultural insect pests. however, landscape studies demonstrating a positive correlation between pest densities and the spatial extent of crop monocultures are rare. we test this hypothesis with a data set from 140 subsistence farms in the andes and find the inverse correlation. infestations by the andean potato w ... | 2011 | 21563583 |
| isolation and characterization of 16 microsatellite loci in the mountain pine beetle, dendroctonus ponderosae hopkins (coleoptera: curculionidae: scolytinae). | we isolated 16 polymorphic microsatellite loci in the mountain pine beetle (dendroctonus ponderosae hopkins) and developed conditions for amplifying these markers in four multiplex reactions. three to 14 alleles were detected per locus across two sampled populations. observed and expected heterozygosities ranged from 0.000 to 0.902 and from 0.100 to 0.830, respectively. three loci deviated from hardy-weinberg equilibrium in one sampled population. one of these loci may be sex linked. these marke ... | 2009 | 21564842 |
| family-group names in coleoptera (insecta). | we synthesize data on all known extant and fossil coleoptera family-group names for the first time. a catalogue of 4887 family-group names (124 fossil, 4763 extant) based on 4707 distinct genera in coleoptera is given. a total of 4492 names are available, 183 of which are permanently invalid because they are based on a preoccupied or a suppressed type genus. names are listed in a classification framework. we recognize as valid 24 superfamilies, 211 families, 541 subfamilies, 1663 tribes and 740 ... | 2011 | 21594053 |
| new subgenus and new species of oriental omophorus (coleoptera, curculionidae, molytinae, metatygini). | the genus omophorus schoenherr, 1835 is recorded for the first time from the oriental region and a new subgenus and species, omophorus (sinomophorus subgen. n.) rongshusp. n. is described from yunnan province (p.r. china). the new subgenus differs from the subgenus omophorus by the longer antennal club, the bifid vestiture of the ventral parts, the elongate subtrapezoidal scutellum, the very small size of sclerotizations in the endophallus, the absence of styli in the ovipositor and the absence ... | 2011 | 21594097 |
| taxonomic redescription and biological notes on diaugia angusta (diptera, tachinidae): parasitoid of the palm boring weevils metamasius ensirostris and m. hemipterus (coleoptera, dryophthoridae). | diaugia angusta perty, 1833 is a neotropical species of tachinidae (diptera) reported here as a parasitoid of metamasius ensirostris (germar, 1824) and metamasius hemipterus (linnaeus, 1758) (coleoptera: dryophthoridae) in brazil. several species of dryophthoridae and curculionidae cause damage to bromeliad and palm species, and most are regarded as pests. in the present study, the male and female of diaugia angusta are morphologically characterized and illustrated to provide a means for the ide ... | 2011 | 21594164 |
| new species and records of cactopinus schwarz with a key to species (coleoptera, curculionidae, scolytinae). | three new species in the genus cactopinus schwarz are described from mexico and the u.s., bringing the total of known species to 21. new host and distribution records and a new key to species are included. | 2010 | 21594169 |
| notes on scolytus fagi walsh 1867 with the ignation of a neotype, distribution notes and key to scolytus geoffroy of america east the mississippi river (coleoptera, curculionidae, scolytinae, scolytini). | the identification of scolytus fagi walsh has been difficult because of the lack of diagnostic literature, the occurrence of several morphologically similar sympatric scolytus species and the loss of the syntypes. in an effort to reduce taxonomic confusion, we designate a neotype for scolytus fagi, redescribe the male and female, add new distributional records and create a key for the identification of eastern scolytus species. | 2010 | 21594170 |
| resurrection of dryotomicus wood and description of two new species from the amazon river basin (coleoptera, curculionidae, scolytinae, phloeotribini). | a cladistic analysis based on 20 morphological characters was conducted for 11 species representing two valid and two synonymized phloeotribini genera. one hundred-eighty most-parsimonious trees were recovered and the dryotomicus wood species were monophyletic in a mostly unresolved strict-consensus tree. the unusual antennal morphology, with the length of the first two funicular segments equal to the last three segments and a scape which is twice the length of the funicle, distinguish dryotomic ... | 2010 | 21594172 |
| new data on neotropical scolytus geoffroy, 1762 with description of five new species from peru (coleoptera, curculionidae, scolytinae). | five new species of scolytus geoffroy, 1762 (coleoptera: curculionidae: scolytinae) are described from peru, namely scolytus woodi, scolytus carveli, scolytus vagabundus, scolytus lindemani, scolytus mozolevskae .the following new synonym is established: scolytus angustatus browne, 1970 (= scolytus facialis schedl, 1973, syn. n.) new records of the scolytus species in loreto, junin ,cusco and madre de dios provinces are given and the biology of the genus representatives is discussed. | 2010 | 21594173 |
| taxonomic changes in palaeotropical xyleborini (coleoptera, curculionidae, scolytinae). | following the recent reclassification of the palaeotropic xyleborine genera (hulcr and cognato in press), additional species are transferred to correct genera or synonymized based on analysis of their morphological characters. the following species are given new combinations: debus amphicranoides (hagedorn), comb. n., debus birmanus (eggers, 1930), comb. n., debus dolosus (blandford, 1896), comb. n., debus eximius (schedl, 1970), comb. n., debus interponens (schedl, 1954), comb. n., debus robust ... | 2010 | 21594174 |
| the external morphology of austroplatypus incompertus (schedl) (coleoptera, curculionidae, platypodinae). | previous descriptions of adult austroplatypus incompertus (schedl) are completed by the addition of descriptions and illustrations of the adults and, in particular, their maxillary palps. i describe and illustrate the non-adult phases of the life cycle and provide a key to the larval instars. the sexual dimorphism of austroplatypus incompertus is atypical and includes a latitudinal cline which obeys bergmann's rule. the taxonomic position of the genus within the platypodinae is clarified. platyp ... | 2010 | 21594175 |
| revision of the genus phloeoditica schedl - with description of two new genera and two new species in phloeosinini (coleoptera, curculionidae, scolytinae). | the genus phloeoditica schedl currently includes four species from southeast asia. these species vary substantially in important morphological characters and indicate the existence of multiple genera for these species. a revision based on morphological and in part molecular data resulted in the transfer of phloeoditica setosa to pseudoxylechinus the erection of a new genus asiophilus for phloeoditica phloeosinoides and a new species asiophilus macropunctatus from vietnam. another new genus with ... | 2010 | 21594176 |
| taxonomic notes on the afrotropical genera hapalogenius hagedorn, hylesinopsis eggers, and rhopalopselion hagedorn (coleoptera, curculionidae, scolytinae). | taxonomic confusion among the afrotropical scolytine genera hapalogenius hagedorn, hylesinopsis eggers and rhopalopselion hagedorn, and their synonyms is discussed with especial reference to the catalogues of wood and bright (1992), and alonso-zarazaga and lyal (2009). a key is given to separate the three genera recognised, and the species considered to be included in each genus are listed. hylesinopsis is resurrected from synonymy with hapalogenius, and shown not to be closely related to it. ch ... | 2010 | 21594177 |
| scolytus stepheni sp. n. - a new species of bark-beetle (coleoptera, curculionidae, scolytinae) from northern india with a key to indian scolytus geoffroy, 1762 species. | a new species of bark-beetle from kashmir, scolytus stephenisp. n., dedicated to the late professor emeritus stephen lane wood, is described and figured. key to indian scolytus geoffroy, 1762 species is provided. | 2010 | 21594178 |
| description of new dryocoetes (coleoptera, curculionidae, scolytinae) speciesfrom afghanistan and northern india and redescription of scolytoplatypus kunala strohm. | a new bark beetle species, dryocoetes brownei from northern india and afghanistan, is described as a new to science and redescription of scolytoplatypus kunala strohmeyer, 1908, previously known only from the female holotype, is provided. | 2010 | 21594179 |
| five new species of triotemnus (coleoptera, curculionidae, scolytinae) from morocco and yemen. | fivenew species of the genus triotemnus from morocco and yemen are described. triotemnus is a new genus of scolytinae for the yemen region. external morphology of the new species and all morphologically related species of the genus were studied. while the new species from morocco are morphologically similar to the known species from the corresponding region, all three newly described species from yemen, mainly two of them living in socotra, are morphologically very different from all other known ... | 2010 | 21594180 |
| the banded elm bark beetle, scolytus schevyrewi semenov (coleoptera, curculionidae, scolytinae) in north america: a taxonomic review and modifications to the wood (1982) key to the species of scolytus geoffroy in north and central america. | in 2003, an asian bark beetle, scolytus schevyrewi semenov (coleoptera: curculionidae: scolytinae), the banded elm bark beetle, was detected for the first time in north america. this paper modifies the wood (1982) key to the species of scolytus geoffroy to enable identification of scolytus schevyrewi in north and central america. variation of diagnostic characters in scolytus schevyrewi is discussed. | 2010 | 21594181 |
| first records of xyleborinus octiesdentatus (murayama) (coleoptera, curculionidae, scolytinae) from north america. | xyleborinus octiesdentatus (murayama), an ambrosia beetle native to asia, is reported for the first time in north america based on specimens from alabama and louisiana. this is the twenty-first species of exotic xyleborina documented in north america. a re-description of the female and a key to the four north american species of xyleborinus are presented. | 2010 | 21594182 |
| bark beetles and pinhole borers (curculionidae, scolytinae, platypodinae) alien to europe. | invasive bark beetles are posing a major threat to forest resources around the world. daisie's web-based and printed databases of invasive species in europe provide an incomplete and misleading picture of the alien scolytines and platypodines. we present a review of the alien bark beetle fauna of europe based on primary literature through 2009. we find that there are 18 scolytinae and one platypodinae species apparently established in europe, from 14 different genera. seventeen species are natur ... | 2010 | 21594183 |
| metapopulation structure of a seed-predator weevil and its host plant in arms race coevolution. | although the importance of gene flow in the geographic structuring of host-parasite interactions has been well discussed, little is known about how dispersal drives the spatial dynamics of other types of coevolutionary interactions in nature. we evaluated the roles of gene flow in the geographically structured processes of a predator-prey arms race involving a seed-predatory weevil with a long mouthpart and its host camellia plant with a thick fruit coat. molecular genetic analyses showed that b ... | 2011 | 21644958 |
| sexes show differential tolerance to spittlebug damage and consequences of damage for multi-species interactions. | antagonists can play a role in sexual system evolution if tolerance or resistance is sex-dependent. our understanding of this role will be enhanced by consideration of the effects of antagonists on other plant-animal interactions. this study determined whether the sex morphs of a gynodioecious fragaria virginiana differ in their susceptibility and response to damage by spittlebugs and whether damage altered pollinator attraction traits or interactions with other antagonists. tolerance, but not r ... | 2005 | 21646088 |
| trees wanted-dead or alive! host selection and population dynamics in tree-killing bark beetles. | bark beetles (coleoptera: curculionidae, scolytinae) feed and breed in dead or severely weakened host trees. when their population densities are high, some species aggregate on healthy host trees so that their defences may be exhausted and the inner bark successfully colonized, killing the tree in the process. here we investigate under what conditions participating with unrelated conspecifics in risky mass attacks on living trees is an adaptive strategy, and what this can tell us about bark beet ... | 2011 | 21647433 |
| pollination of australian macrozamia cycads (zamiaceae): effectiveness and behavior of specialist vectors in a dependent mutualism. | complementary field and laboratory tests confirmed and quantified the pollination abilities of tranes sp. weevils and cycadothrips chadwicki thrips, specialist insects of their respective cycad hosts, macrozamia machinii and m. lucida. no agamospermous seeds were produced when both wind and insects were excluded from female cones; and the exclusion of wind-vectored pollen alone did not eliminate seed set, because insects were able to reach the cone. based on enclosure pollination tests, each wee ... | 2005 | 21652476 |
| complex selection on life-history traits and the maintenance of variation in exaggerated rostrum length in acorn weevils. | trophic interactions can trigger the development of exaggerated specialized characters and promote morphological diversification. for example, acorn weevils (genus curculio) present strikingly long rostrums, which are used by females to perforate oviposition holes through the seed coat. species exhibiting longer rostrums are known to exploit larger acorns, and therefore rostrum length is thought to be subject to selection to match the preferred acorn type. however, rostrum length is strongly cor ... | 2011 | 21674207 |
| beetle pollination of shorea parvifolia (section mutica, dipterocarpaceae) in a general flowering period in sarawak, malaysia. | pollination ecology of an emergent tree species, shorea (section mutica) parvifolia (dipterocarpaceae), was studied using the canopy observation system in a lowland dipterocarp forest in sarawak, malaysia, during a general flowering period in 1996. although the species has been reported to be pollinated by thrips in peninsular malaysia, our observations of flower visitors and pollination experiments indicated that beetles (chrysomelidae and curculionidae, coleoptera) contributed to pollination o ... | 1999 | 21680346 |
| evaluation of insecticides for control of overwintering hylurgopinus rufipes (coleoptera: curculionidae). | a bark disk bioassay was used to assess the effectiveness of different insecticides for control of overwintering adult native elm bark beetles, hylurgopinus rufipes (eichoff) (coleoptera: curculionidae). insecticides were applied to the base of the trunks of living american elm trees, ulmus americana l., and bark disk samples were removed at intervals with a hole saw. adult h. rufipes were exposed in bioassay chambers for which the bark disks formed the floor of the chamber. in september 2005, c ... | 2011 | 21735908 |
| variation in enantiospecific attraction of ips avulsus (coleoptera: curculionidae) to the pheromone ipsdienol in georgia. | in 2006, we tested the responses of the small southern pine engraver, ips avulsus (eichhoff) (coleoptera: curculionidae), to multiple-funnel traps baited with (+)-, (-)-, and (+/-)-ipsdienol. three experiments were conducted in georgia with all traps co-baited with one of the following lure combinations, respectively: experiment 1, ipsenol; experiment 2, lanierone and (-)-alpha-pinene; and experiment 3, ipsenol, lanierone, and (-)-alpha-pinene. ipsdienol and lanierone are aggregation pheromones ... | 2011 | 21735909 |
| prepupal diapause and instar iv developmental rates of the spruce beetle, dendroctonus rufipennis (coleoptera: curculionidae, scolytinae). | the spruce beetle, dendroctonus rufipennis (kirby), is an important mortality agent of native spruces throughout north america. the life-cycle duration of this species varies from 1 to 3years depending temperature. the univoltine cycle (one generation per year) is thought to maximize outbreak risk and accelerate host mortality in established outbreaks. prepupal diapause is associated with the semivoltine cycle (one generation per 2years) and we investigated thermal conditions that result in diap ... | 2011 | 21740908 |
| obrieniolus, a new monotypic genus of naupactini (coleoptera, curculionidae, entiminae) from the peruvian andes and its phylogenetic placement. | a new monotypic genus of naupactini (coleoptera: curculionidae), obrieniolus del río is described based on the new species obrieniolus robustus del río, endemic to peru. this genus is easily recognized by the black, denuded and shiny integument, with imbricate microsculpture and the rounded body, with short, cordiform and moderately convex elytra. according to a cladistic analysis based on 69 continuous and discrete morphological characters, the new genus is the sister taxon of a group formed by ... | 2011 | 21747674 |
| the sudden emergence of pathogenicity in insect-fungus symbioses threatens naive forest ecosystems. | invasive symbioses between wood-boring insects and fungi are emerging as a new and currently uncontrollable threat to forest ecosystems, as well as fruit and timber industries throughout the world. the bark and ambrosia beetles (curculionidae: scolytinae and platypodinae) constitute the large majority of these pests, and are accompanied by a diverse community of fungal symbionts. increasingly, some invasive symbioses are shifting from non-pathogenic saprotrophy in native ranges to a prolific tre ... | 2011 | 21752822 |
| effect of arbuscular mycorrhizal fungi (glomus intraradices) on the oviposition of rice water weevil (lissorhoptrus oryzophilus). | root-feeding insects are important drivers in ecosystems, and links between aboveground oviposition preference and belowground larval performance have been suggested. the root-colonizing arbuscular mycorrhizal fungi (amf) play a central role in plant nutrition and are known to change host quality for root-feeding insects. however, it is not known if and how amf affect the aboveground oviposition of insects whose offspring feed on roots. according to the preference-performance hypothesis, insect ... | 2011 | 21755406 |
| lower temperature thresholds for oviposition and egg hatching of the red palm weevil, rhynchophorus ferrugineus (coleoptera: curculionidae), in a mediterranean climate. | the red palm weevil, rhynchophorus ferrugineus olivier (coleoptera: curculionidae), is an economically important pest of palms worldwide. to better understand the phenology of r. ferrugineus populations in the mediterranean basin, the objective of the present work has been to estimate the effect of temperatures within the range 10-25°c on the reproductive parameters of r. ferrugineus and to determine its lower temperature thresholds for oviposition and egg hatching. our results confirm that ovip ... | 2012 | 21854685 |
| investigating preference-performance relationships in aboveground-belowground life cycles: a laboratory and field study with the vine weevil (otiorhynchus sulcatus). | the preference-performance hypothesis has principally considered insect herbivores with aboveground lifecycles, although the hypothesis could be equally relevant to insects with life stages occurring both aboveground and belowground. moreover, most studies have focussed on either laboratory or field experiments, with little attempt to relate the two. in this study, the preference-performance hypothesis was examined in an aboveground-belowground context in the laboratory using the vine weevil (ot ... | 2012 | 21867576 |
| [basic features of the nemoral curculionid-beetle fauna (coleoptera, curculionoidea) from eastern europe and western siberia]. | there are 132 curculionids associated with deciduous trees in eastern europe and western siberia. the weevils and bark beetles make up the basis of the fauna, forming almost 80%. the fauna of oak is the richest (64 species). the species composition on the ash-tree (50% are monophages) is highly original. impoverishment of the species composition from the west to the east is revealed. the fauna declines by 18% from 45 to 550 e. the species composition reduces two times beyond the urals. the fauna ... | 2011 | 21870499 |
| chemical composition and insecticidal activity of the essential oil of amethystea caerulea l. | the essential oil of the aerial parts of amethystea caerulea l. was obtained from steam distillation and investigated by gc and gc-ms. the main components of the essential oil were morrilol (25.1%), 4-vinylguaiacol (14.3%) and acetoanisole (14.3%), followed by linalool (6.6%), eugenol (5.8%) and α-caryophyllene (5.2%). the essential oil showed pronounced contact toxicity against drosophila melanogaster l. and maize weevil, sitophilus zeamais (motsch.), with ld(50) values of 5.18 and 50.45 µg per ... | 2011 | 21878001 |
| bark beetle pheromones and pine volatiles: attractant kairomone lure blend for longhorn beetles (cerambycidae) in pine stands of the southeastern united states. | in 2006, we examined the flight responses of 43 species of longhorn beetles (coleoptera: cerambycidae) to multiple-funnel traps baited with binary lure blends of (1) ipsenol + ipsdienol, (2) ethanol + alpha-pinene, and a quaternary lure blend of (3) ipsenol + ipsdienol + ethanol + alpha-pinene in the southeastern united states. in addition, we monitored responses of buprestidae, elateridae, and curculionidae commonly associated with pine longhorn beetles. field trials were conducted in mature pi ... | 2011 | 21882689 |
| use of systemic fipronil and imidacloprid to control regeneration pests of loblolly pine. | regeneration pests of loblolly pine (pinus taeda l.) threaten growth and survival in intensively managed loblolly pine plantations throughout the southeastern united states. the nantucket pine tip moth, rhyacionia frustrana (comstock), in particular, often reduces growth of loblolly pine but has been difficult to control with traditional insecticides due to multiple annual generations and multi-year infestations which are difficult to predict in timing and location. relatively new systemic insec ... | 2011 | 21882692 |
| comment on "additive genetic breeding values correlate with the load of partially deleterious mutations". | tomkins et al. (reports, 14 may 2010, p. 892) reported a strong negative correlation between breeding values and mutational load in cow-pea weevils. here, i show that this result can be attributed to a statistical artifact. by testing the observed correlation against an incorrect null hypothesis, they find a negative correlation where one does not exist. | 2011 | 21885758 |
| Supercritical fluid CO(2) extraction of Acorus calamus L. (Arales: Araceae) and its contact toxicity to Sitophilus zeamais Motschusky (Coleoptera: Curculionidae). | Contact toxicities of Acorus calamus L. (Arales: Araceae) extracts obtained from four published extraction methods: soakage, soxhlet, ultrasonic and supercritical fluid CO(2) (SFE-CO(2)), were compared in this study. Under the given extraction conditions, SFE-CO(2) extract exhibited the highest contact toxicity against S. zeamais of the four methods. With the SFE-CO(2) method, extraction temperature, pressure, time and the amount of EtOH (the extraction solvent) were identified as having a signi ... | 2011 | 21936638 |
| scanning electron micrographs of oryzophagus oryzae (coleoptera, curculionidae), plastron structure and swimming behavior. | the morphological structures that permit oryzophagus oryzae aquatic activities and swimming behavior were studied and compared with various weevils and other relevant species. the use of scanning electron microscopy facilitated the recognition of three different hydrofuge scales and sensilla. based on the microscopic observations of behavior, morphological evidence, and comparisons with other curculionid species, it was supported that the gas exchange in o. oryzae adults relies on a subelytral a ... | 2012 | 22055468 |
| microbial diversity in the larval gut of field and laboratory populations of the sugarcane weevil sphenophorus levis (coleoptera, curculionidae). | the sugarcane weevil, sphenophorus levis, is a wide-spread sugarcane pest in brazil. sphenophorus levis may depend on microorganisms that inhabit its intestinal tract. we examined the diversity of the gut microbiota of s. levis, which was characterized using culture-dependent and culture-independent methods. analysis of 16s rrna amplified directly from the gut community revealed the presence of 14 genera, one group from the candidatus category, one uncultured group assigned to the family f ... | 2011 | 22057964 |
| Response of Pisum sativum (Fabales: Fabaceae) to Sitona lineatus (Coleoptera: Curculionidae) infestation: effect of adult weevil density on damage, larval population, and yield loss. | Sitona lineatus L. (Coleoptera: Curculionidae) is an invasive pest in North America and its geographical range is currently expanding across the Canadian prairies. Adults and larvae of S. lineatus feed upon the foliage and root nodules, respectively, of field pea, Pisum sativum L. (Fabales: Fabaceae), and may contribute to economic losses when population densities are high. Integrated pest management (IPM) programs that incorporate economic thresholds should be used to manage S. lineatus populat ... | 2011 | 22066184 |
| effectiveness of odor-baited trap trees for plum curculio (coleoptera: curculionidae) monitoring in commercial apple orchards in the northeast. | the plum curculio, conotrachelus nenuphar (herbst), is a key pest of pome and stone fruit in eastern and central north america. for effective management of this insect pest in commercial apple (malus spp.) orchards in the northeastern united states and canada, one of the greatest challenges has been to determine the need for and timing of insecticide applications that will protect apple fruit from injury by adults. in a 2004-2005 study, we assessed the efficacy and economic viability of a reduce ... | 2011 | 22066191 |
| Comparative efficacy of plant-derived essential oils for managing ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) and their corresponding mass spectral characterization. | Ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) pose a significant challenge to producers of ornamental nursery stock. Conventional insecticides are commonly used for management purposes, but plant-derived essential oils also may discourage ambrosia beetles from initiating attacks. To identify promising commercially available products, field-based efficacy trials were conducted in Ohio in 2009 and 2010 with the following products: Armorex (Soil Technologies), Cinnacure (Proguard, Inc.), ... | 2011 | 22066197 |
| Spatial patterns of aflatoxin levels in relation to ear-feeding insect damage in pre-harvest corn. | Key impediments to increased corn yield and quality in the southeastern US coastal plain region are damage by ear-feeding insects and aflatoxin contamination caused by infection of Aspergillus flavus. Key ear-feeding insects are corn earworm, Helicoverpa zea, fall armyworm, Spodoptera frugiperda, maize weevil, Sitophilus zeamais, and brown stink bug, Euschistus servus. In 2006 and 2007, aflatoxin contamination and insect damage were sampled before harvest in three 0.4-hectare corn fields using a ... | 2011 | 22069748 |
| bioactivity of short-chain aliphatic ketones against adults of the granary weevil, sitophilus granarius (l.). | background: the granary weevil, sitophilus granarius (l.), is one of the most damaging pests of stored grains, causing severe quantitative and qualitative losses. sustainable control means, alternative to the commonly used fumigants and broad-spectrum contact insecticides, are urgently needed owing to legislative limits, the development of resistant insect strains and increasing consumer demand for safe food. short-chain aliphatic ketones, known to be emitted by cereal grains and previously iden ... | 2011 | 22081494 |
| flight activity and dispersal of the cabbage seedpod weevil (coleoptera: curculionidae) are related to atmospheric conditions. | the cabbage seedpod weevil, ceutorhynchus obstrictus (marsham) (coleoptera: curculionidae), is an invasive pest of canola (brassica napus l. and brassica rapa l.) in western canada. under current climatic conditions, c. obstrictus is spreading from established populations in southwestern alberta at ˜55 km/yr. we studied the influence of climatic conditions on c. obstrictus flight behavior in 2007 and 2008 and eastward dispersal from the western border of saskatchewan from 2002 to 2007. positive ... | 2010 | 22127159 |
| plant nutrients and the spatiotemporal distribution dynamics of ceutorhynchus obstrictus (coleoptera: curculionidae) and its parasitoids. | the cabbage seedpod weevil, ceutorhynchus obstrictus (marsham), is an alien invasive pest of canola, brassica napus l., in north america. field populations of both adults and larvae are known to be aggregated in their distributions, but the causal mechanism for this clustering is not understood. we investigated the hypothesis that spatial distributions of c. obstrictus adults, larvae, and their parasitoids were directly or indirectly related to host plant quality as indicated by leaf tissue nut ... | 2010 | 22127171 |
| laboratory performance of two polyphagous invasive weevils on the predominant woody plant species of a northern hardwood community. | a complex of invasive weevils that consume roots as larvae and foliage as adults have become established in northern hardwood forests in north america. we evaluated adults of the two most prominent species, phyllobius oblongus and polydrusus sericeus, for longevity, foliage consumption, and egg production on several putative hosts commonly found in this ecosystem. adult pairs were monitored in no-choice laboratory assays for the duration of their lifespans on basswood, tilia americana, ironwood ... | 2010 | 22127174 |
| electroantennographic and behavioral responses of adults of raspberry weevil aegorhinus superciliosus (coleoptera: curculionidae) to odors released from conspecific females. | the raspberry weevil, aegorhinus superciliosus (guérin) (coleoptera: curculionidae), is the most important pest in blueberry and raspberry fields in the south of chile. in this study, we investigated the electroantennographic and behavioral responses of a. superciliosus to semiochemicals released from conspecific individual adults, with particular attention to male attraction to females. odors released from females significantly attracted males in a y-tube olfactometer. gas chromatographic and ... | 2010 | 22127178 |
| age- and time interval-specific gamma radiation-induced dna damage in adult maize weevils, sitophilus zeamais motschulsky, assessed using comet assays. | the gamma radiation-induced dna damage in adult maize weevils, sitophilus zeamais motschulsky (coleoptera: curculionidae), was assessed using single-cell electrophoresis (comet assay). analysis of dna damage following 0.5 and 1.0kgy of gamma radiation was performed using cells from 1- and 15-day-old adults. gamma-irradiated adults from both age groups showed typical dna fragmentation, whereas cells from non-irradiated adults showed more intact dna than young s. zeamais. investigations using the ... | 2012 | 22142832 |
| Toxicity of Rhododendron anthopogonoides Essential Oil and Its Constituent Compounds towards Sitophilus zeamais. | The screening of several Chinese medicinal plants for insecticidal principles showed that essential oil of Rhododendron anthopogonoides flowering aerial parts possessed significant toxicity against maize weevils, Sitophilus zeamais. A total of 37 components were identified in the essential oil and the main constituents of the essential oil were 4-phenyl-2-butanone (27.22%), nerolidol (8.08%), 1,4-cineole (7.85%), caryophyllene (7.63%) and ?-elemene (6.10%), followed by a-farnesene (4.40%) and sp ... | 2011 | 22143541 |
| exploring diversity in cryptorhynchine weevils (coleoptera) using distance-, character- and tree-based species delineation. | species boundaries are studied in a group of beetles, the western palaearctic cryptorhynchinae. we test for congruence of 'traditionally' identified morphospecies with species inferred through parsimony networks, distance-based clustering and the ultrametric tree-based generalized mixed yule-coalescent (gmyc) approach. for that purpose, we sequenced two variable fragments of mitochondrial dna (co1 and 16s) for a total of 791 specimens in 217 species of cryptorhynchinae. parsimony networks, morph ... | 2011 | 22155423 |
| Comparative Genetic Structure and Demographic History in Endemic Galapagos Weevils. | The challenge of maintaining genetic diversity within populations can be exacerbated for island endemics if they display population dynamics and behavioral attributes that expose them to genetic drift without the benefits of gene flow. We assess patterns of the genetic structure and demographic history in 27 populations of 9 species of flightless endemic Galápagos weevils from 9 of the islands and 1 winged introduced close relative. Analysis of mitochondrial DNA reveals a significant population ... | 2011 | 22174444 |
| biology and host preferences of cryptorhynchus melastomae (coleoptera: curculionidae), a possible biocontrol agent for miconia calvescens (melastomataceae) in hawaii. | the introduced plant miconia calvescens (melastomataceae) poses a grave threat to hawaii's native ecosystems and biodiversity. one potential candidate for classical biological control is cryptorhynchus melastomae (coleoptera: curculionidae: cryptorhynchinae), a stem-boring weevil from central and south america. this weevil feeds on m. calvescens in its native costa rica and has been successfully reared under greenhouse conditions. comparison of its environmental conditions in costa rica with th ... | 2010 | 22182550 |
| Evaluation of tag entanglement as a factor in harmonic radar studies of insect dispersal. | The observation of insects and other small organisms entangled in the habitat after the addition of vertical or trailing electronic tags to their body has generated concerns on the suitability of harmonic radars to track the dispersal of insects. This study compared the walking behavior of adult Colorado potato beetle (Leptinotarsa decemlineata (Say) Chrysomelidae), plum curculio (Conotrachelus nenuphar (Herbst) Curculionidae), and western corn rootworm (Diabrotica virgifera virgifera (LeConte) ... | 2011 | 22182617 |
| [effect of spiders (arachnida: araneae) as predators of insect pest in alfalfa crops (medicago sativa) (fabaceae) in argentina]. | spiders are predators that reduce insect pest populations in agroecosystems. trials were conducted to measure the selectivity against different insect preys, the daily consumption, effect of predators alone and together with a known number of preys, and the indirect effect of predators on vegetation. for this, experimental units (1 x 1m) were used covered with a fine plastic mesh. misumenops pallidus, oxyopes salticus and araneus sp. were used as generalist predators, and aphids, weevils, locust ... | 2011 | 22208081 |
| attack pattern of platypus koryoensis (coleoptera: curculionidae: platypodinae) in relation to crown dieback of mongolian oak in korea. | the ambrosia beetle, platypus koryoensis (murayama), vectors the korean oak wilt (kow) pathogen, raffaelea quercus-mongolicae k.h. kim, y.j. choi, & h.d. shin, in korea, which is highly lethal to mongolian oak, quercus mongolica fisch., and is considered a major threat to forest ecosystem health. we characterized the attack pattern of p. koryoensis along the lower trunk of 240 mongolian oaks in relation to tree decline symptoms on mt. uam in gyeonggi-do province, korea during june-july 2009. for ... | 2011 | 22217750 |
| consequences of habitat fragmentation for the prairie-endemic weevil haplorhynchites aeneus. | widespread destruction of tallgrass prairies in the midwestern united states has fragmented plant communities with the result that populations of endemic animal species have become geographically isolated from one another. the goal of the research summarized here was to evaluate the potential for conserving endemic prairie species of herbivorous insects by managing their host plants. our study species was the weevil haplorhynchites aeneus (boehman), adults of which feed on pollen of plants in t ... | 2011 | 22217753 |
| genetic heterogeneity in a cyclical forest pest, the southern pine beetle, dendroctonus frontalis, is differentiated into east and west groups in the southeastern united states. | the southern pine beetle, dendroctonus frontalis zimmerman (coleoptera: curculionidae) is an economically important pest species throughout the southeastern united states, arizona, mexico, and central america. previous research identified population structure among widely distant locations, yet failed to detect population structure among national forests in the state of mississippi. this study uses microsatellite variation throughout the southeastern united states to compare the southern pine be ... | 2011 | 22220595 |
| new record for the coffee berry borer, hypothenemus hampei, in hawaii. | the coffee berry borer, hypothenemus hampei (ferrari) (coleoptera: curculionidae) is endemic to africa and is the most devastating pest of coffee worldwide. the female bores a hole in the coffee berry and deposits her eggs inside. upon hatching, larvae feed on the seeds, thus reducing both quality and yields of the marketable product. the coffee berry borer was found in the district of kona on the island of hawaii in august 2010 and appears to be restricted to that area. | 2011 | 22225430 |
| gut-associated bacteria throughout the life cycle of the bark beetle dendroctonus rhizophagus thomas and bright (curculionidae: scolytinae) and their cellulolytic activities. | dendroctonus rhizophagus thomas and bright (curculionidae: scolytinae) is an endemic economically important insect of the sierra madre occidental in mexico. this bark beetle has an atypical behavior within the genus because just one beetle couple colonizes and kills seedlings and young trees of 11 pine species. in this work, the bacteria associated with the dendroctonus rhizophagus gut were analyzed by culture-dependent and culture-independent methods. analysis of 16s rrna sequences amplified di ... | 2012 | 22234511 |
| chemical evaluation of african palm weevil, rhychophorus phoenicis, larvae as a food source. | abstract the chemical properties of the african palm weevil, rhychophorus phoenicis (f.) (coleoptera: curculionidae), larvae were evaluated using standard methodology. the chloroform-methanol extract yielded 37.12% on a dry basis. the oil was liquid at room temperature with a flash point of 36.0 °c. analysis of the physical constants indicated values of 192.25 wijs and 427.70 mg koh/g as iodine and saponification, respectively. fatty acid analysis of the extracted oil showed the presence o ... | 2011 | 22236060 |
| coleopterans associated with plants that form phytotelmata in subtropical and temperate argentina, south america. | abstract a list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of argentina, south america with biological and behavioral observations is presented in this study. species of poaceae (n = 3), bromeliaceae (5), apiaceae (6), araceae (2), urticaceae (1), marantaceae (1), arecaceae (1), dipsacaceae (1) and cyperaceae (1) were identified as phytotelmata. aquatic speci ... | 2011 | 22236084 |
| toxicity of the essential oil of illicium difengpi stem bark and its constituent compounds towards two grain storage insects. | abstract during our screening program for new agrochemicals from chinese medicinal herbs, the essential oil of illicium difengpi stem bark was found to possess strong insecticidal activities against the maize weevil, sitophilus zeamais (motschulsky) (coleoptera: curculionidae) and red flour beetle, tribolium castaneum herbst (coleoptera: tenebrionidae). a total of 37 components of the essential oil of i. difengpi were identified. the main components of the essential oil were safrole (23.61%), ... | 2011 | 22236213 |
| factors influencing the geographical distribution of dendroctonus rhizophagus (coleoptera: curculionidae: scolytinae) in the sierra madre occidental, méxico. | the bark beetle, dendroctonus rhizophagus thomas & bright, is endemic to the sierra madre occidental (smoc) in méxico. this bark beetle is a major pest of the seedlings and young saplings of several pine species that are of prime importance to the nation's forest industry. despite the significance of this bark beetle as a pest, its biology, ecology, and distribution are poorly known. three predictive modeling approaches were used as a first approximation to identify bioclimatic variables related ... | 2011 | 22251632 |
| temperature alters the relative abundance and population growth rates of species within the dendroctonus frontalis (coleoptera: curculionidae) community. | temperature has strong effects on metabolic processes of individuals and demographics of populations, but effects on ecological communities are not well known. many economically and ecologically important pest species have obligate associations with other organisms; therefore, effects of temperature on these species might be mediated by strong interactions. the southern pine beetle (dendroctonus frontalis zimmermann) harbors a rich community of phoretic mites and fungi that are linked by many s ... | 2011 | 22251683 |
| dna barcoding for community ecology - how to tackle a hyperdiverse, mostly undescribed melanesian fauna. | trigonopterus weevils are widely distributed throughout melanesia and hyperdiverse in new guinea. they are a dominant feature in natural forests, with narrow altitudinal zonation. their use in community ecology has been precluded by the "taxonomic impediment". | 2012 | 22253699 |
| evaluation of an oil dispersion formulation of imidacloprid as a drench against rhynchophorus ferrugineus (coleoptera, curculionidae) in young palm trees. | background: the red palm weevil, rhynchophorus ferrugineus (olivier), is a phytophagous insect that feeds on soft succulent tissues of most palm species and is considered the main palm pest in the middle east and the mediterranean basin. the aim of this study was to test the efficacy of imidacloprid oil dispersion (od) as a drench in preventive and curative treatments against r. ferrugineus in phoenix canariensis, washingtonia robusta, washingtonia filifera and trachycarpus fortunei. results: le ... | 2011 | 22262504 |
| pea albumin 1 subunit b (pa1b), a promising bioinsecticide of plant origin. | pa1b (pea albumin 1, subunit b) is a peptide extract from pea seeds showing significant insecticidal activity against certain insects, such as cereal weevils (genus sitophilus), the mosquitoes culex pipiens and aedes aegyptii, and certain species of aphids. pa1b has great potential for use on an industrial scale and for use in organic farming: it is extracted from a common plant; it is a peptide (and therefore suitable for transgenic applications); it can withstand many steps of extraction and p ... | 2011 | 22295174 |
| economic injury level for the coffee berry borer (coleoptera: curculionidae: scolytinae) using attractive traps in brazilian coffee fields. | the currently existing sample procedures available for decision-making regarding the control of the coffee berry borer hypothenemus hampei (ferrari) (coleoptera: curculionidae: scolytinae) are time-consuming, expensive, and difficult to perform, compromising their adoption. in addition, the damage functions incorporated in such decision levels only consider the quantitative losses, while dismissing the qualitative losses. traps containing ethanol, methanol, and benzaldehyde may allow cheap and e ... | 2011 | 22299352 |
| relative performance of lindgren multiple-funnel, intercept panel, and colossus pipe traps in catching cerambycidae and associated species in the southeastern united states. | in 2004, we evaluated the relative performance of 8-unit lindgren multiple-funnel (funnel), intercept panel (panel), and colossus pipe (pipe) traps, baited with ethanol and ac-pinene lures, in catching saproxylic beetles (coleoptera) in pine stands in northern florida and western south carolina. panel traps were as good as, if not better than, funnel and pipe traps for catching cerambycidae. in particular, more monochamus titillator (f.) were captured in panel traps than in pipe and funnel traps ... | 2011 | 22299355 |
| reducing insecticide volume and nontarget effects of ambrosia beetle management in nurseries. | ambrosia beetles (coleoptera: curculionidae: scolytinae) are increasingly important pests of nursery-grown trees because of the arrival of several invasive species. ambrosia beetles bore into young trees and inoculate them with ambrosia fungus, which interferes with vascular transport resulting in limb or tree death. in spring, when beetles are active, growers make frequent applications of pyrethroid insecticides to susceptible tree species to deter beetles from boring into trees. applications o ... | 2011 | 22299358 |
| optimizing ethanol-baited traps for monitoring damaging ambrosia beetles (coleoptera: curculionidae, scolytinae) in ornamental nurseries. | the exotic ambrosia beetles xylosandrus crassiusculus (motschulsky) and xylosandrus germanus (blandford) (coleoptera: curculionidae: scolytinae) are serious pests in ornamental tree nurseries. to optimize bottle-traps as a monitoring system for x. crassiusculus and x. germanus in nurseries, we tested whether increasing the rate of commercial ethanol lures improved captures or early detection of these species. experiments were conducted in ohio (2008 and 2009) and virginia (2008), two states that ... | 2011 | 22299365 |
| new genus and species of broad-nosed weevils from baltic amber and notes on fossils of the subfamily entiminae (coleoptera, curculionidae). | arostropsis groehnigen. et sp. n. is described from baltic amber and temporarily placed in the tribe naupactini. it differs from all recent naupactini genera with open corbels by very short and flattened scape, distinct lateral carina of the pronotum and elytra, and the rostrum distinctly narrower than the head capsule. the shape of head in the extinct genus is somewhat similar to that of the extant naupactini genera with enclosed corbels (platyomus sahlberg, 1823 and aptolemus schoenherr, 1842) ... | 2011 | 22303121 |
| composition and biological potential of essential oil from thelechitonia trilobata growing in south africa. | thelechitonia trilobata is regarded as a troublesome weed that grows to form a dense blanket over the soil preventing the growth of other crops in farmland. although the plant is regarded as a notorious, invasive plant, its chemical composition and biological potential have not been reported. the essential oil was isolated from the fresh leaves of t. trilobata using hydrodistillation. alpha-pinene (21.6%), alpha-phellendrene (21.0%), limonene (12.8%) and germacrene d (7.5%) were the major consti ... | 2011 | 22312745 |
| sexing of adults for three mexican pine cone beetle species, conophthorus conicolens, c. teocotum, and c. michoacanae. | individuals belonging to species of the genus conophthorus (coleoptera: curculionidae) are notoriously difficult to sex, especially if only certain parts of the beetle are available and the genitals are unidentifiable. we are presenting evidence demonstrating that rows of setae and setal characteristics at the posterior margin of tergite vii (the fifth visible tergite) can be used to sex the three mexican pine cone beetle species conophthorus conicolens wood, c. teocotum hopkins, and c. michoaca ... | 2011 | 22950435 |
| isolation and expression of cytochrome p450 genes in the antennae and gut of pine beetle dendroctonus rhizophagus (curculionidae: scolytinae) following exposure to host monoterpenes. | bark beetles oxidize the defensive monoterpenes of their host trees both to detoxify them and convert them into components of their pheromone system. this oxidation is catalyzed by cytochrome p450 enzymes and occurs in different tissues of the insect, including the gut (i.e., the site where the beetle's pheromones are produced and accumulated) and the antennae (i.e., the olfactory organs used for perception of airborne defensive monoterpenes as well as other host-associated compounds and pheromo ... | 2012 | 23262344 |
| a remarkable leaf mine induced by tachygonus sp.n. (coleoptera: curculionidae: curculioninae: rhamphini) on erythroxylum subsessile (erythroxylaceae) with a description of the new species. | in this study, we describe and present original data on the bionomics and ecology of tachygonus erythroxyli hespenheide, new species, on erythroxylum subsessile (mart.). thirty individuals of e. subsessile were analysed every two months, from october, 2006 to october, 2007 at the national park of restinga de jurubatiba (pnrj) carapebus, rio de janeiro, brazil. females of t. erythroxyli lay their eggs singly on the upper surface of the host's leaves. the mine of t. erythroxyli is expanded with th ... | 2012 | 23295527 |
| preferential edge habitat colonization by a specialist weevil, rhinoncomimus latipes (coleoptera: curculionidae). | understanding the behavioral basis of dispersal and colonization is critical in biological control systems, where success of a natural enemy depends in part on its ability to find and move to new host patches. we studied behavior of the specialist weevil rhinoncomimus latipes korotyaev, a biological control agent of mile-a-minute weed, persicaria perfoliata (l.) h. gross, by releasing weevils at the forest edge and monitoring their colonization of potted host plants arrayed along the edge, out i ... | 2012 | 23321094 |
| the push-pull tactic for mitigation of mountain pine beetle (coleoptera: curculionidae) damage in lodgepole and whitebark pines. | in an attempt to improve semiochemical-based treatments for protecting forest stands from bark beetle attack, we compared push-pull versus push-only tactics for protecting lodgepole pine (pinus contorta douglas ex loudon) and whitebark pine (pinus albicaulis engelm.) stands from attack by mountain pine beetle (dendroctonus ponderosae hopkins) in two studies. the first was conducted on replicated 4.04-ha plots in lodgepole pine stands (california, 2008) and the second on 0.81-ha plots in whitebar ... | 2012 | 23321106 |
| xyleborus glabratus, x. affinis, and x. ferrugineus (coleoptera: curculionidae: scolytinae): electroantennogram responses to host-based attractants and temporal patterns in host-seeking flight. | the redbay ambrosia beetle, xyleborus glabratus eichhoff, is an exotic wood-boring insect that vectors the mycopathogen responsible for laurel wilt, a lethal vascular disease of trees in the lauraceae, including avocado (persea americana mill.). effective semiochemical-based detection and control programs for x. glabratus will require an understanding of the chemical ecology and host-seeking behaviors of this new invasive pest. this study 1) presents an electroantennography (eag) method develope ... | 2012 | 23321108 |
| [population fluctuation of xyleborus ferrugineus and x. affinis (coleoptera: curculionidae) in ecosystems of tabasco, mexico]. | the scolytinae insects are commonly known as bark or ambrosial beetles because of their feeding habits. among them, some species restrict their reproductive activity to a host plant or a small number of them, whereas others are highly polyphagous. in order to evaluate the population dynamics of scolytinae species, populations of xyleborusferrugineus and x. affinis in ecosystems from tabasco, mexico were studied. the study was carried out from november 2010-july 2011, february 2010-january 2011 a ... | 2012 | 23342512 |
| gc-ms analysis of insecticidal essential oil of flowering aerial parts of saussurea nivea turcz. | several species from saussurea have been used in the traditional medicine, such as s. lappa, s. involucrate, and s. obvallata. there is no report on medicinal use of s. nivea. the aim of this research was to determine chemical composition and insecticidal activity of the essential oil of s. nivea turcz (asteraceae) aerial parts against maize weevils (sitophilus zeamais motschulsky) for the first time. | 2012 | 23351592 |
| hunting billbug (coleoptera: curculionidae) life cycle and damaging life stage in north carolina, with notes on other billbug species abundance. | in the southeastern united states, hunting billbug, sphenophorus venatus vestitus chittenden, adults are often observed in turfgrass, but our knowledge of their biology and ecology is limited. field surveys and experiments were conducted to determine the species composition, life cycle, damaging life stage, and distribution of billbugs within the soil profile in turfgrass in north carolina. linear pitfall trapping revealed six species of billbug, with the hunting billbug making up 99.7% of all b ... | 2012 | 23356069 |
| ozone toxicity and walking response of populations of sitophilus zeamais (coleoptera: curculionidae). | ozone is a recognized alternative to the fumigants methyl bromide and phosphine for the control of stored product insects. however, as with fumigants in general, the potential sublethal effects of ozone on targeted insect species may compromise its efficacy and has yet to be investigated. here, we determined ozone toxicity of 30 field-collected populations of the maize weevil, sitophilus zeamais (coleoptera: curculionidae), and assessed the walking response of adult insects from these population ... | 2012 | 23356086 |
| rhabdorrhynchus echii (brahm, 1790), a "forgotten" name (coleoptera, curculionidae, lixinae). | the application of the name curculio echii brahm, 1790 is discussed. based on the description it is evident that it should be applied to a german species of the genus rhabdorrhynchus, and that it has priority over the name currently applied to the species, rhabdorrhynchus seriegranosus chevrolat, 1873. the new combination rhab-dorrhynchus echii (brahm, 1790) is proposed. as there is a lack of any type material of curculio echii a neotype is designated. based on the study of the type specimen, rh ... | 2012 | 23372419 |
| microbiology of the gut of the kola nut weevil, balanogastris kolae. | reports have shown that many insects have microbes in their gut system. gut microbes are very important for insect vitality and much of their nutrition is derived from products of microbial metabolism. the habitat of balanogastris kolae (desbrocher des loges) (coleoptera: curculionidae) suggests that they possess the ability to digest varieties of sugars particularly starch and protein materials present in the kola nut, cola nitida schott & endlicher (malvales: malvaceae). the aim of this study ... | 2012 | 23421598 |
| effect of bait quantity and trap color on the trapping efficacy of the pheromone trap for the red palm weevil, rhynchophorus ferrugineus. | the red palm weevil, rhynchophorus ferrugineus (olivier) (curculionidae: coleoptera), is not native to the united arab emirates (uae). since its arrival in 1985, it has been causing major damage to date palm trees. a primary control strategy has been the use of pheromone baited traps. the objectives of this study were to determine the quantity of bait, and the best trap color, to obtain the maximum catch of r. ferrugineus under field conditions in the uae. traps with 100, 300, or 500 g of dates ... | 2012 | 23451836 |
| greenhouse studies of thiamethoxam effects on pea leaf weevil, sitona lineatus. | the pea leaf weevil, sitona lineatus l. (coleoptera: curculionidae), has recently emerged as an important pest of field peas in the canadian prairies. systemic seed-coated insecticides may provide a tool for the integrated pest management of this pest. therefore, several controlled assays were performed in order to determine effects of a recently registered neonicotinoid, (thiamethoxam) on s. lineatus damage to foliage, weevil mortality, fertility, egg viability, larval mortality, and root nodul ... | 2012 | 23461362 |