| human and animal dirofilariasis: the emergence of a zoonotic mosaic. | dirofilariasis represents a zoonotic mosaic, which includes two main filarial species (dirofilaria immitis and d. repens) that have adapted to canine, feline, and human hosts with distinct biological and clinical implications. at the same time, both d. immitis and d. repens are themselves hosts to symbiotic bacteria of the genus wolbachia, the study of which has resulted in a profound shift in the understanding of filarial biology, the mechanisms of the pathologies that they produce in their hos ... | 0 | 22763636 |
| temperature effects on the dynamics of aedes albopictus (diptera: culicidae) populations in the laboratory. | we investigated how constant temperatures of 22, 24, and 26 degrees c experienced across the full life cycle affected the dynamics of caged populations of aedes albopictus (skuse). all cages were equipped with plastic beakers that served as sites for oviposition and larval development. we measured the per capita daily mortality and emergence rates of the adults and size of adult females, and estimated the intrinsic rate of increase (r) and asymptotic density (k) for each caged population. popula ... | 0 | 11476335 |
| co-occurrence patterns of the dengue vector aedes aegypti and aedes mediovitattus, a dengue competent mosquito in puerto rico. | aedes aegypti is implicated in dengue transmission in tropical and subtropical urban areas around the world. ae. aegypti populations are controlled through integrative vector management. however, the efficacy of vector control may be undermined by the presence of alternative, competent species. in puerto rico, a native mosquito, ae. mediovittatus, is a competent dengue vector in laboratory settings and spatially overlaps with ae. aegypti. it has been proposed that ae. mediovittatus may act as a ... | 2011 | 21989642 |
| vector-borne helminths of dogs and humans in europe. | presently, 45% of the total human population of europe, as well as their domestic and companion animals, are exposed to the risk of vector-borne helminths (vbh) causing diseases. a plethora of intrinsic biological and extrinsic factors affect the relationship among helminths, vectors and animal hosts, in a constantly changing environment. although canine dirofilarioses by dirofilaria immitis and dirofilaria repens are key examples of the success of vbh spreading into non-endemic areas, another e ... | 2013 | 23324440 |
| mosquito oviposition behavior and vector control. | the burden of gene transfer from one mosquito generation to the next falls on the female and her eggs. the selection of an oviposition site that guarantees egg and larval survival is a critical step in the reproductive process. the dangers associated with ephemeral aquatic habitats, lengthy droughts, freezing winters, and the absence of larval nutrition makes careful oviposition site selection by a female mosquito extremely important. mosquito species exhibit a remarkable diversity of ovipositio ... | 2016 | 27869724 |
| mosquito-host interactions during and after an outbreak of equine viral encephalitis in eastern panama. | mosquito blood meals provide information about the feeding habits and host preference of potential arthropod-borne disease vectors. although mosquito-borne diseases are ubiquitous in the neotropics, few studies in this region have assessed patterns of mosquito-host interactions, especially during actual disease outbreaks. based on collections made during and after an outbreak of equine viral encephalitis, we identified the source of 338 blood meals from 10 species of mosquitoes from aruza abajo, ... | 2013 | 24339965 |
| dose-response tests and semi-field evaluation of lethal and sub-lethal effects of slow release pyriproxyfen granules (sumilarv®0.5g) for the control of the malaria vectors anopheles gambiae sensu lato. | recently research has shown that larviciding can be an effective tool for integrated malaria vector control. nevertheless, the uptake of this intervention has been hampered by the need to re-apply larvicides frequently. there is a need to explore persistent, environmentally friendly larvicides for malaria vector control to reduce intervention efforts and costs by reducing the frequency of application. in this study, the efficacy of a 0.5% pyriproxyfen granule (surmilarv®0.5g, sumitomo chemicals) ... | 2013 | 23497149 |
| dogs, cats, parasites, and humans in brazil: opening the black box. | dogs and cats in brazil serve as primary hosts for a considerable number of parasites, which may affect their health and wellbeing. these may include endoparasites (e.g., protozoa, cestodes, trematodes, and nematodes) and ectoparasites (i.e., fleas, lice, mites, and ticks). while some dog and cat parasites are highly host-specific (e.g., aelurostrongylus abstrusus and felicola subrostratus for cats, and angiostrongylus vasorum and trichodectes canis for dogs), others may easily switch to other h ... | 2014 | 24423244 |
| ovary ecdysteroidogenic hormone activates egg maturation in the mosquito georgecraigius atropalpus after adult eclosion or a blood meal. | the rockpool mosquito, georgecraigius atropalpus, is a facultatively autogenous species that produces its first egg clutch without a blood meal shortly after emergence. several days after depositing this clutch, females must take a blood meal to produce a second egg clutch. decapitation of females shortly after emergence or blood ingestion prevents egg maturation. here, we report that a single injected dose of the neuropeptide ovary ecdysteroidogenic hormone (oeh) fully restored egg maturation i ... | 2012 | 22811249 |
| male aedes aegypti mosquitoes use jh iii transferred during copulation to influence previtellogenic ovary physiology and affect the reproductive output of female mosquitoes. | the effect of male accessory gland substances on female reproductive physiology has been previously described as "activating" egg development. however, no mechanism has been described that can explain how male mosquitoes are able to influence egg development in female mosquitoes. to investigate how male mosquitoes are able to influence ovarian physiology and reproductive output we explored three main questions: (1) do mating and male accessory gland substances affect ovarian physiology and alter ... | 2014 | 24657670 |
| larval anopheline mosquito recta exhibit a dramatic change in localization patterns of ion transport proteins in response to shifting salinity: a comparison between anopheline and culicine larvae. | mosquito larvae live in dynamic aqueous environments, which can fluctuate drastically in salinity due to environmental events such as rainfall and evaporation. larval survival depends upon the ability to regulate hemolymph osmolarity by absorbing and excreting ions. a major organ involved in ion regulation is the rectum, the last region for modification of the primary urine before excretion. the ultrastructure and function of culicine larval recta have been studied extensively; however, very lit ... | 0 | 18805805 |
| the epidemiology of rift valley fever in mayotte: insights and perspectives from 11 years of data. | rift valley fever (rvf) is a zoonotic arboviral disease that is a threat to human health, animal health and production, mainly in sub-saharan africa. rvf virus dynamics have been poorly studied due to data scarcity. on the island of mayotte in the indian ocean, off the southeastern african coast, rvf has been present since at least 2004. several retrospective and prospective serological surveys in livestock have been conducted over eleven years (2004-15). these data are collated and presented he ... | 2016 | 27331402 |
| systematic revision of the adeleid haemogregarines, with creation of bartazoon n. g., reassignment of hepatozoon argantis garnham, 1954 to hemolivia, and molecular data on hemolivia stellata. | life cycles and molecular data for terrestrial haemogregarines are reviewed in this article. collection material was re-examined: hepatozoon argantis garnham, 1954 in argas brumpti was reassigned to hemolivia as hemolivia argantis (garnham, 1954) n. comb.; parasite dna was extracted from a tick crush on smear of an archived slide of hemolivia stellata in amblyomma rotondatum, then the 18s ssrrna gene was amplified by pcr. a systematic revision of the group is proposed, based on biological life c ... | 2015 | 26551414 |
| in-depth study of mollivirus sibericum, a new 30,000-y-old giant virus infecting acanthamoeba. | acanthamoeba species are infected by the largest known dna viruses. these include icosahedral mimiviruses, amphora-shaped pandoraviruses, and pithovirus sibericum, the latter one isolated from 30,000-y-old permafrost. mollivirus sibericum, a fourth type of giant virus, was isolated from the same permafrost sample. its approximately spherical virion (0.6-µm diameter) encloses a 651-kb gc-rich genome encoding 523 proteins of which 64% are orfans; 16% have their closest homolog in pandoraviruses an ... | 2015 | 26351664 |
| evaluation of the efficacy, potential for vector transmission, and duration of immunity of mp-12, an attenuated rift valley fever virus vaccine candidate, in sheep. | rift valley fever virus (rvfv) causes serious disease in ruminants and humans in africa. in north america, there are susceptible ruminant hosts and competent mosquito vectors, yet there are no fully licensed animal vaccines for this arthropod-borne virus, should it be introduced. studies in sheep and cattle have found the attenuated strain of rvfv, mp-12, to be both safe and efficacious based on early testing, and a 2-year conditional license for use in u.s. livestock has been issued. the purpos ... | 2015 | 26041042 |
| risk factors associated with rift valley fever epidemics in south africa in 2008-11. | rift valley fever (rvf) is a zoonotic and vector-borne disease, mainly present in africa, which represents a threat to human health, animal health and production. south africa has experienced three major rvf epidemics (1950-51, 1973-75 and 2008-11). due to data scarcity, no previous study has quantified risk factors associated with rvf epidemics in animals in south africa. using the 2008-11 epidemic datasets, a retrospective longitudinal study was conducted to identify and quantify spatial and t ... | 2015 | 25804974 |
| evans blue as a simple method to discriminate mosquitoes' feeding choice on small laboratory animals. | temperature, humidity, vision, and particularly odor, are external cues that play essential roles to mosquito blood feeding and oviposition. entomological and behavioral studies employ well-established methods to evaluate mosquito attraction or repellency and to identify the source of the blood meal. despite the efficacy of such methods, the costs involved in the production or acquisition of all parts, components and the chemical reagents involved are unaffordable for most researchers from poor ... | 2014 | 25333369 |
| effects of neonicotinoids and fipronil on non-target invertebrates. | we assessed the state of knowledge regarding the effects of large-scale pollution with neonicotinoid insecticides and fipronil on non-target invertebrate species of terrestrial, freshwater and marine environments. a large section of the assessment is dedicated to the state of knowledge on sublethal effects on honeybees (apis mellifera) because this important pollinator is the most studied non-target invertebrate species. lepidoptera (butterflies and moths), lumbricidae (earthworms), apoidae sens ... | 2014 | 25223353 |
| neurophysiological and behavioral responses of gypsy moth larvae to insect repellents: deet, ir3535, and picaridin. | the interactions between insect repellents and the olfactory system have been widely studied, however relatively little is known about the effects of repellents on the gustatory system of insects. in this study, we show that the gustatory receptor neuron (grn) located in the medial styloconic sensilla on the maxillary palps of gypsy moth larvae, and known to be sensitive to feeding deterrents, also responds to the insect repellents deet, ir3535, and picaridin. these repellents did not elicit res ... | 2014 | 24955823 |
| interaction of light regimes and circadian clocks modulate timing of pre-adult developmental events in drosophila. | circadian clocks have been postulated to regulate development time in several species of insects including fruit flies drosophila melanogaster. previously we have reported that selection for faster pre-adult development reduces development time (by ~19 h or ~11%) and clock period (by ~0.5 h), suggesting a role of circadian clocks in the regulation of development time in d. melanogaster. we reasoned that these faster developing flies could serve as a model to study stage-specific interaction of c ... | 2014 | 24885932 |
| an insight into the sialome of the frog biting fly, corethrella appendiculata. | the nematocera infraorder culicomorpha is believed to have descended from bloodfeeding ancestors over 200 million years ago, generating bloodfeeding and non-bloodfeeding flies in two superfamilies, the culicoidea-containing the mosquitoes, the frog-feeding midges, the chaoboridae, and the dixidae-and the chironomoidea-containing the black flies, the ceratopogonids, the chironomidae, and the thaumaleidae. blood feeding requires many adaptations, including development of a sophisticated salivary p ... | 2013 | 24514880 |
| giant viruses coexisted with the cellular ancestors and represent a distinct supergroup along with superkingdoms archaea, bacteria and eukarya. | the discovery of giant viruses with genome and physical size comparable to cellular organisms, remnants of protein translation machinery and virus-specific parasites (virophages) have raised intriguing questions about their origin. evidence advocates for their inclusion into global phylogenomic studies and their consideration as a distinct and ancient form of life. | 2012 | 22920653 |
| twenty-four years in the mud: what have we learned about the natural history and ecology of the mangrove rivulus, kryptolebias marmoratus? | although first described in 1880, kryptolebias marmoratus avoided scientific scrutiny until 1961, when it was identified as the only known selfing hermaphroditic vertebrate. the subsequent intense interest in this fish as a laboratory animal, continuing to this day, might explain the paucity of wild collections, but our collective knowledge now suggests that the inherent difficulty of wild collection is more a matter of "looking in all the wrong places." long thought to be rare in the mangroves, ... | 2012 | 22576816 |
| morphological variants of aedes aegypti collected from the leeward island of antigua. | nineteen aedes aegypti larvae were collected in rural antigua, west indies, from an 18-liter plastic bucket. the location was in a rural area at the northern end of antigua bordering the coast of dickenson bay and approximately 50 m south of halcyon cove beach (17 degrees 09'42.54"n, 61 degrees 50'44.50"w; elevation 16 m). atypical morphology was noted in larvae and 3 reared adult females. fourth instars showed a reduction in length of the lateral hair on the saddle (seta 1-x) with measurements ... | 0 | 22017096 |
| genetic analysis of scattered populations of the indian eri silkworm, samia cynthia ricini donovan: differentiation of subpopulations. | deforestation and exploitation has led to the fragmentation of habitats and scattering of populations of the economically important eri silkworm, samia cynthia ricini, in north-east india. genetic analysis of 15 eri populations, using issr markers, showed 98% inter-population, and 23% to 58% intra-population polymorphism. nei's genetic distance between populations increased significantly with altitude (r(2) = 0.71) and geographic distance (r(2) = 0.78). on the dendrogram, the lower and upper ass ... | 2011 | 21931526 |
| the giant cafeteria roenbergensis virus that infects a widespread marine phagocytic protist is a new member of the fourth domain of life. | a recent work has provided strong arguments in favor of a fourth domain of life composed of nucleo-cytoplasmic large dna viruses (ncldvs). this hypothesis was supported by phylogenetic and phyletic analyses based on a common set of proteins conserved in eukarya, archaea, bacteria, and viruses, and implicated in the functions of information storage and processing. recently, the genome of a new ncldv, cafeteria roenbergensis virus (crov), was released. the present work aimed to determine if crov s ... | 2011 | 21559486 |
| transcellular and paracellular pathways of transepithelial fluid secretion in malpighian (renal) tubules of the yellow fever mosquito aedes aegypti. | isolated malpighian tubules of the yellow fever mosquito secrete nacl and kcl from the peritubular bath to the tubule lumen via active transport of na(+) and k(+) by principal cells. lumen-positive transepithelial voltages are the result. the counter-ion cl(-) follows passively by electrodiffusion through the paracellular pathway. water follows by osmosis, but specific routes for water across the epithelium are unknown. remarkably, the transepithelial secretion of nacl, kcl and water is driven b ... | 2010 | 20946239 |
| physiological and pharmacological characterizations of the larval anopheles albimanus rectum support a change in protein distribution and/or function in varying salinities. | ion regulation is a biological process crucial to the survival of mosquito larvae and a major organ responsible for this regulation is the rectum. the recta of anopheline larvae are distinct from other subfamilies of mosquitoes in several ways, yet have not yet been characterized extensively. here we characterize the two major cell types of the anopheline rectum, dar and non-dar cells, using histological, physiological, and pharmacological analyses. proton flux was measured at the basal membrane ... | 2010 | 20460167 |
| poxvirus protein evolution: family wide assessment of possible horizontal gene transfer events. | to investigate the evolutionary origins of proteins encoded by the poxviridae family of viruses, we examined all poxvirus protein coding genes using a method of characterizing and visualizing the similarity between these proteins and taxonomic subsets of proteins in genbank. our analysis divides poxvirus proteins into categories based on their relative degree of similarity to two different taxonomic subsets of proteins such as all eukaryote vs. all virus (except poxvirus) proteins. as an example ... | 2009 | 19464330 |
| phylogenetic evidence for extensive lateral acquisition of cellular genes by nucleocytoplasmic large dna viruses. | nucleo-cytoplasmic large dna viruses (ncldv), a diverse group that infects a wide range of eukaryotic hosts, exhibit a large heterogeneity in genome size (between 100 kb and 1.2 mb) but have been suggested to form a monophyletic group on the basis of a small subset of approximately 30 conserved genes. ncldv were proposed to have evolved by simplification from cellular organism although some of the giant ncldv have clearly grown by gene accretion from a bacterial origin. | 2008 | 19036122 |
| characterization of a juvenile hormone-regulated chymotrypsin-like serine protease gene in aedes aegypti mosquito. | after female mosquitoes ingest blood from vertebrate hosts, exopeptidases and endopeptidases are required for digesting blood proteins in the midgut into amino acids, which female mosquitoes use to build yolk proteins. these proteases are not always present in the midgut, and their diverse expression patterns suggest that production of these enzymes is highly regulated in order to meet specific physiological demands at various stages. here we report identification of a serine-type protease, jha1 ... | 2007 | 18207080 |
| pathogenicity tests on nine mosquito species and several non-target organisms with strelkovimermis spiculatus (nemata mermithidae). | nine species of mosquitoes and several species of non-target aquatic organisms were tested for susceptibility to the mernaithid nematode, strelkovimermis spiculatus. all species of anopheles, aedes, culex, and toxorhynchites exposed to s. spiculatus were susceptible. of the nine mosquito species tested, c. pipiens quinquefasciatus had the greatest tolerance to initial invasion and the highest percent infection of those that survived. high levels of infection were also achieved with aedes taenior ... | 0 | 19274233 |
| pathway of infection of mosquito iridescent virus. i. preliminary observations on the fate of ingested virus. | mosquito iridescent virus (miv) is ingested in large amounts by first- and second-instar aedes taeniorhynchus larvae without causing a high rate of infection. electron microscope studies have been undertaken to determine the fate of ingested virus. preliminary observations suggest that most, if not all, ingested particles are degraded shortly after entering the midgut. miv and other virus particles employed in this study were apparently unable to penetrate the peritrophic membrane; consequently, ... | 0 | 4152171 |
| seasonality, prevalence and pathogenicity of the gregarine ascogregarina taiwanensis (apicomplexa: lecudinidae) in mosquitoes from florida. | aedes albopictus larvae collected in gainesville, fl, were infected with the gregarine ascogregarina taiwanensis. natural prevalence varied from 68 to 100%. eight mosquito species were tested in the laboratory for susceptibility to a. taiwanensis isolated from field-collected ae. albopictus. aedes aegypti, aedes albopictus, and aedes taeniorhynchus became 100% infected in the larval stage, whereas aedes triseriatus was less susceptible; culex quinquefasciatus, culex nigripalpus, culex territans, ... | 1994 | 7807086 |
| a mosquito survey of the twin-island caribbean nation of saint kitts and nevis, 2010. | adult mosquito surveys of saint kitts and nevis (skn) were performed in the dry season (march 16-23, 2010) in saint kitts, and the rainy season (october 18-25, 2010) in skn. biogents (bg) sentinel traps were set with co₂and bg lure in urban, rural, mangrove, and dry forest habitats. mosquitoes were identified to species, and reverse transcription-polymerase chain reaction was performed on potential vector species for dengue virus (denv), chikungunya virus (chikv), and west nile virus (wnv). the ... | 2015 | 26675458 |
| non-human primate antibody response to mosquito salivary proteins: implications for dengue virus transmission in puerto rico. | an important step to incriminate a mosquito as a vector of a disease pathogen is finding evidence of direct contact between the mosquito and humans. typically, this is accomplished through landing/biting catches, or host blood meal analysis in engorged mosquitoes via immunologic assays. an alternate approach is to identify the presence of specific mosquito anti-saliva protein antibodies in the blood of exposed hosts. following the discovery of dengue infected, free roaming non-human primates in ... | 2016 | 27593498 |
| [do some conditions contribute to the reemergence of the venezuelan equine encephalitis virus in the colombian alta guajira?]. | in the last 18 years, epizootics of venezuelan equine encephalitis have not occurred in places with historic epidemic register (1925-1995) in the guajira peninsula, colombia. | 2015 | 26148035 |
| zika virus vector competency of mosquitoes, gulf coast, united states. | zika virus has recently spread throughout the americas. although aedes aegypti mosquitoes are considered the primary vector, culex quinquefasciatus and mosquitoes of other species may also be vectors. we tested cx. quinquefasciatus and ae. taeniorhynchus mosquitoes from the us gulf coast; both were refractory to infection and incapable of transmission. | 2017 | 28005002 |
| first record of anopheles albimanus from st kitts. | previous mosquito surveys performed in the federation of st kitts and nevis identified anopheles albimanus in nevis but there is no recorded occurrence of this mosquito in st kitts. to determine the presence of this and other species in st kitts and nevis, a mosquito survey was conducted. | 2011 | 22519234 |
| [seasonal and time dynamics of aedes aegypti (diptera: culicidae) in cienfuegos municipality]. | dengue is one of the most important vector-borne diseases in las americas due, among other factors, to the increase of aedes aegypti populations. | 2013 | 23431620 |
| secretion of water and ions by malpighian tubules of larval mosquitoes: effects of diuretic factors, second messengers, and salinity. | the effects of changes in the salinity of the rearing medium on malpighian tubule fluid secretion and ion transport were examined in larvae of the freshwater mosquito aedes aegypti and the saltwater species ochlerotatus taeniorhynchus. for unstimulated tubules of both species, the k(+) concentration of secreted fluid was significantly lower when larvae were reared in 30% or 100% seawater (o. taeniorhynchus only), relative to tubules from freshwater-reared larvae. the na(+) concentration of secre ... | 2013 | 16691529 |
| carbonic anhydrase in the adult mosquito midgut. | we have previously demonstrated the involvement of carbonic anhydrase (ca) in larval mosquito midgut physiology. in this study, we used hansson's histochemistry to examine the distribution of the enzyme in the midgut of aedes aegypti, aedes albopictus, culex quinquefasciatus, culex nigripalpus, ochlerotatus taeniorhynchus, anopheles albimanus and anopheles quadrimaculatus adult mosquitoes. additionally, we quantitated ca content in the anterior and posterior midgut of adult males and females fro ... | 2005 | 16109888 |
| alkalization of larval mosquito midgut and the role of carbonic anhydrase in different species of mosquitoes. | we have previously demonstrated the involvement of carbonic anhydrase (ca) in the alkalization mechanism of the aedes aegypti larval midgut. in this study, we used hansson's histochemistry to examine the distribution of the enzyme in the midgut of six different species of mosquito larvae (aedes aegypti, aedes albopictus, culex quinquefasciatus, culex nigripalpus, ochlerotatus taeniorhynchus, anopheles quadrimaculatus). additionally, we quantitated ca content in the gastric caeca, anterior and po ... | 2004 | 15171946 |
| ph tolerances and regulatory abilities of freshwater and euryhaline aedine mosquito larvae. | the ph regulatory abilities of two members of the mosquito tribe aedini, known to have dramatically different saline tolerances, are investigated. the freshwater mosquito aedes aegypti and the euryhaline ochlerotatus taeniorhynchus tolerate very similar ph ranges. both species complete larval development in waters ranging from ph 4 to ph 11, but naïve larvae always die in water of ph 3 or 12. across the ph range 4-11, the hemolymph ph of o. taeniorhynchus is maintained constant while that of a. ... | 2004 | 15159434 |
| differences in the effects of salinity on larval growth and developmental programs of a freshwater and a euryhaline mosquito species (insecta: diptera, culicidae). | the effects of salinity on growth and development of the euryhaline ochlerotatus taeniorhynchus and the freshwater aedes aegypti are compared. o. taeniorhynchus grow larger, and have greater intrinsic growth rates, than a. aegypti. females of each species attain greater mass, take longer to develop, and have greater growth rates than do males. in o. taeniorhynchus, pupal mass, larval stage duration and growth rates (dry mass) increase with salinity, whereas growth rates (wet mass) remain constan ... | 2004 | 15159433 |
| biochemical and cytoimmunological evidence for the control of aedes aegypti larval trypsin with aea-tmof. | trypsin and chymotrypsin-like enzymes were detected in the gut of aedes aegypti in the four larval instar and pupal developmental stages. although overall the amount of trypsin synthesized in the larval gut was 2-fold higher than chymotrypsin, both enzymes are important in food digestion. feeding aea-trypsin modulating oostatic factor (tmof) to ae. aegypti and culex quinquefasciatus larvae inhibited trypsin biosynthesis in the larval gut, stunted larval growth and development, and caused mortali ... | 2004 | 14981657 |
| effectiveness and residual activity comparison of granular formulations of insect growth regulators pyriproxyfen and s-methoprene against florida mosquitoes in laboratory and outdoor conditions. | effectiveness and residual activity tests of granular formulations of 2 insect growth regulators (igrs), s-methoprene and pyriproxyfen, against laboratory-reared larvae of 5 colonized mosquitoes, aedes aegypti, aedes albopictus, aedes taeniorhynchus, anopheles quadrimaculatus, and culex nigripalpus, were conducted in the laboratory and outdoors in plastic tubs. culex quinquefasciatus was exposed to these two igrs in the laboratory only. each igr formulation was applied at 0.02 and 0.05 ppm activ ... | 2002 | 12322941 |
| mosquito vector control and biology in latin america--a twelfth symposium. denver, colorado, february 2002. summaries. | the 12th annual latin american symposium presented by the american mosquito control association (amca) was held as part of the 68th annual meeting in denver, co, in february 2002. the principal objective, as for the previous 11 symposia, was to promote participation in the amca by vector control specialists, public health workers, and academicians from latin america. this publication includes summaries of 35 presentations that were given orally in spanish or presented as posters by participants ... | 2002 | 12322934 |
| evaluation of various models of propane-powered mosquito traps. | large cage and field studies were conducted to determine the efficacy of various models of propane-powered mosquito traps. these traps utilized counterflow technology in conjunction with catalytic combustion to produce attractants (carbon dioxide, water vapor, and heat) and a thermoelectric generator that converted excess heat into electricity for stand-alone operation. the cage studies showed that large numbers of aedes aegypti and ochlerotatus taeniorhynchus were captured and that each progres ... | 2002 | 12125861 |
| survey of container-breeding mosquitoes from the florida keys, monroe county, florida. | a survey of container-breeding mosquitoes was conducted on urban islands (big coppitt key, rockland key, key west, and stock island) and rural islands (big pine key, cudjoe key, little torch key, no name key, ramrod key, saddlebunch keys, sugarloaf key, and summerland key) within the florida keys. five mosquito species were collected: aedes aegypti, culex nigripalpus, cx. quinquefasciatus, cx. salinarius, and ochlerotatus taeniorhynchus. plastic buckets, trash cans, and discarded plastic contain ... | 2001 | 11804461 |
| responses of male and female mosquitoes to repellents in the world health organization insecticide irritability test system. | a study was conducted to compare responses of male and female aedes aegypti (linn.) and aedes taeniorhynchus (wiedemann) to 9 olfactory repellents in the world health organization insecticide irritability test system. an irritant insecticide (permethrin) and a control were included for comparison. aedes aegypti exhibited significantly more takeoffs than ae. taeniorhynchus, and female mosquitoes exhibited significantly more takeoffs than males. permethrin induced significantly more takeoffs than ... | 1999 | 10342270 |
| electrophysiological responses of receptor neurons in mosquito maxillary palp sensilla to carbon dioxide. | sensilla basiconica on the maxillary palps of female aedes aegypti contain a receptor neuron which produces a phasic-tonic pattern of action potential response to low concentrations (150-300 ppm) of carbon dioxide (co2), a stimulus known to be involved with host seeking behavior. these receptor neurons respond reliably to small increments in co2 concentration (e.g., 50 ppm). we were particularly interested in evaluating the possibility that the sensitivity to step increases in co2 concentration ... | 1995 | 7674195 |
| pathology of mosquito iridescent virus of aedes taeniorhynchus in cell cultures of aedes aegypti. | | 1976 | 1245745 |
| bioassay of mosquito iridescent virus of aedes taeniorhynchus in cell cultures of aedes aegypti. | | 1975 | 1159310 |
| field evaluation of the off! clip-on mosquito repellent (metofluthrin) against aedes albopictus and aedes taeniorhynchus (diptera: culicidae) in northeastern florida. | repellent efficacy of the off! clip-on mosquito repellent device (s. c. johnson and son, inc., racine, wi) containing metofluthrin was evaluated on six human volunteers against the container-breeding mosquito aedes albopictus (skuse) and the salt marsh mosquito aedes taeniorhynchus (wiedemann) at two field locations in northeastern florida. the device repelled mosquitoes by releasing a vaporized form of the pyrethroid insecticide metofluthrin ([ai] 31.2%) and provided 70% protection from ae. alb ... | 2012 | 22679874 |
| mosquito fauna of wilderness islands within the national key deer refuge and the great white heron national wildlife refuge, monroe county, florida. | dry ice-baited light traps, counts of mosquitoes biting and landing on technicians, and larval surveillance were used to determine mosquito species abundance on annette key, little knockem-down key, little pine key, raccoon key, and the water keys, all of which are located offshore, within the national key deer refuge and great white heron national wildlife refuge in monroe county, fl. due to the close proximity of these wilderness islands to the inhabited islands of the florida keys, it is impo ... | 2010 | 20649123 |
| relative abundance of mosquito species (diptera: culicidae) on big pine key, florida, u.s.a. | species diversity of mosquito (diptera: culicidae) collections in carbon dioxide-baited light traps was investigated on big pine key, florida, from 2000 - 2004. twenty species of mosquitoes were collected during this study, the most commonly collected being anopheles atropos, culex bahamensis, deinocerites cancer, and ochlerotatus taeniorhynchus. ochlerotatus taeniorhynchus is the dominant species at this location. for most of the mosquito species, more individuals were collected during the "hig ... | 2005 | 16599171 |
| ineffectiveness of mass trapping for mosquito control in st. andrews state park, panama city beach, florida. | abstract. mass trapping with multiple co2- and octenol-supplemented mosquito magnet x traps (mm-x), operated 24 h/day, 7 days/wk, from march through november 2008, at st. andrews state park on northwest florida's gulf coast, did not significantly reduce mosquito numbers compared to nontreated control sites. anopheles crucians, aedes taeniorhynchus, culex salinarius, and culex erraticus were the predominant species. culex coronator was also collected for the first time in the park. failure to red ... | 2010 | 20402350 |
| comparison of two american biophysics mosquito traps: the professional and a new counterflow geometry trap. | large cage and field studies were conducted to compare the efficacy of 2 american biophysics corporation mosquito traps, the standard professional (pro) trap and a new counterflow geometry (cfg) trap. the pro trap utilizes conventional downdraft technology and the cfg trap uses a patent-pending technology. in large cage studies, similarly baited cfg traps captured approximately 1.7 times as many laboratory-reared aedes taeniorhynchus as the pro trap. the cfg trap baited with co2 + octenol result ... | 1999 | 10480115 |
| adult body size and parity in field populations of the mosquitoes anopheles crucians, aedes taeniorhynchus and aedes sollicitans. | | 1987 | 3504950 |
| susceptibility of adult mosquitoes to insecticides in aqueous sucrose baits. | mosquitoes characteristically feed on plant-derived carbohydrates and honeydew just after emergence and intermittently during their lives. development of toxic baits focusing on this carbohydrate-seeking behavior may potentially contribute to localized control. in the present study, ten insecticides were fed to female culex quinquefasciatus, anopheles quadrimaculatus, and aedes taeniorhynchus in a 10% sucrose solution. active ingredients representative of five classes of insecticides (pyrethroid ... | 2011 | 21635642 |
| efficacy of dibrom, trumpet, and scourge against four mosquito species in louisiana. | adult mortality of anopheles quadrimaculatus, culex quinquefasciatus, and the aedes spp. complex (aedes sollicitans and aedes taeniorhynchus) was observed after aerial ultra-low volume (ulv) exposure to dibrom, trumpet, and scourge. dibrom was applied at 112 g active ingredient (ai)/ha, trumpet at 112 g ai/ha, and scourge at 1.96 g ai/ha. at all time intervals, dibrom and trumpet were significantly more effective against the aedes spp. complex than against an. quadrimaculatus and cx. quinquefasc ... | 1999 | 10612604 |
| repellency of two controlled-release formulations of deet against anopheles quadrimaculatus and aedes taeniorhynchus mosquitoes. | two experimental controlled-release repellent formulations containing 35% (3m) and 44% (biotek) deet, respectively, were compared with a 75% standard formulation of deet used by the military. the military repellent was equal to or significantly better than the formulations in duration of protection against 2 mosquito species in laboratory and field tests, but the formulations contained only 47-59% the amount of deet in the military repellent. in all cases high levels of protection (greater than ... | 1989 | 2708995 |
| aedes taeniorhynchus (diptera: culicidae) oviposition patterns in a florida mangrove forest. | the association of aedes taeniorhynchus eggs and several variables was studied in a florida mangrove forest. eggs were limited to stands of red mangrove (rhizophora mangle l.) that were embedded within a black mangrove (avicennia germinans l.) forest. the occurrence of eggs was related significantly to elevation and the amount of detritus. field and laboratory studies indicated that grazing on black mangrove detritus by the snail melampus coffeus l. may have limited detritus accumulation and soi ... | 1991 | 1941908 |
| a simulation model of water depth in mangrove basin forests. | the construction and validation of a model simulating the water depth within mangrove basin forests is described. rainfall, water table, water depth and tide data collected from a red mangrove basin forest on marco island, fl, was used to estimate model parameters. these included the basin spillover height, evapotranspiration-infiltration rate and the functional relationship of water depth change to rainfall, tide and basin spillover. the model was constructed with lotus 123 and calibrated from ... | 1990 | 2370528 |
| colonization of culex nigripalpus theobald (diptera: culicidae) by stimulation of mating using males of other mosquito species. | culex nigripalpus theobald (diptera: culicidae) was recolonized successfully by cohabiting aedes taeniorhynchus males or males of other mosquito species starting in a large outdoor cage under natural light-dark cycles and temperatures and ending in a 1-ft.3 cage under artificial light-dark cycles at 24 degrees c without added stimulation. | 1999 | 10342273 |
| bva 2 mosquito larvicide--a new surface oil larvicide for mosquito control. | bva 2 mosquito larvicide was evaluated in laboratory pan tests against 3rd-instar aedes taeniorhynchus (wied.), culex quinquefasciatus say, and culex nigripalpus theobald larvae. bva 2 was as effective as the standard, gb-1111, at 14 liters/ha (> 99.1% vs. 99.8%). in small field plot tests bva 2 mosquito larvicide applied at 28 liters/ha was as effective as gb-1111 (99.0% vs. 99.8%) 24 h posttreatment. operationally, applied by helicopter at 46.8 liters/ha, bva 2 mosquito larvicide was more effe ... | 1998 | 9673922 |
| current status on the florida abate monitoring program--susceptibility levels of three species of mosquitoes during 1984. | during 1984, larval susceptibility tests of temephos were performed on aedes taeniorhynchus and culex nigripalpus collected from the same general areas as in 1980-82, and the results compared to the susceptible laboratory strains. no resistance was detected against these two species. when strains of culex quinquefasciatus from some new areas were tested against temephos, malathion, naled, fenthion and chlorpyrifos, their tolerance varied according to the insecticide tested and the origin of the ... | 1985 | 2466107 |
| diagnostic dose of synergized d-phenothrin for insecticide susceptibility testing by bottle bioassay. | the diagnostic dose of d-phenothrin synergized 1:1 with piperonyl butoxide for testing insecticide susceptibility of mosquitoes by bottle bioassay is reported for 2 mosquito species, culex quinquefasciatus and ochlerotatus taeniorhynchus. the diagnostic dose was defined as 2 times the 95% lethal concentration (lc95). lc50, lc90, and lc95 were estimated by probit analysis of dose response data. procedures for diluting the commercial-grade off-the-shelf pesticide in acetone, treating the bottles, ... | 2004 | 15264629 |
| comparison of the synthetic pyrethroids esbiothrin and bioresmethrin with scourge and cythion against adult mosquitoes in a laboratory wind tunnel. | both candidate adulticides, esbiothrin and bioresmethrin, exhibited quick knockdown 1-h posttreatment. esbiothrin elicited the fastest knockdown, but bioresmethrin was more effective at both 1- and 24-h posttreatment than either esbiothrin or scourge against both aedes taeniorhynchus and culex quinquefasciatus. mosquitoes treated with scourge required more time and a higher dosage to respond in a physiological manner similar to those treated with either of the candidate adulticides. more than tw ... | 1992 | 1583490 |
| the killifish rivulus marmoratus: a potential biocontrol agent for aedes taeniorhynchus and brackish water culex. | in the laboratory, newly hatched fry of rivulus marmoratus were effective predators on 1st-instar aedes taeniorhynchus. adult fish consumed 4th-instar ae. taeniorhynchus and egg rafts of culex quinquefasciatus at a rate increasing with standard length of the fish. predation of rivulus marmoratus on ae. taeniorhynchus larvae in the field was documented by observing the passage of larval/pupal remains through the gut. laboratory reared fish released at known ae. taeniorhynchus breeding sites survi ... | 1992 | 1583495 |
| control of aedes taeniorhynchus and culex quinquefasciatus emergence with sustained release altosid sand granules and pellets in saltwater and freshwater test plots. | the efficacy of sustained release altosid sand granules to control adult aedes taeniorhynchus and culex quinquefasciatus emergence was investigated. sand granules applied at a 7-day preflood application rate of 5.6 kg/ha controlled 99% of the ae. taeniorhynchus emergence in saltwater plots for 44 days posttreatment and 35% of cx. quinquefasciatus in freshwater plots. a 5.6 kg/ha rate controlled 100% of the ae. taeniorhynchus emergence for 30 days posttreatment in semi-permanent saltwater plots. ... | 1991 | 1791449 |
| preliminary data on use of the inland silverside, menidia beryllina, to control mosquito larvae. | a study of procedures for spawning and culture of the inland silverside, menidia beryllina, was conducted. the efficacy of young menidia, 20 to 22 and 31 to 33 days old, to control mosquito larvae was determined in the laboratory with first and second larval instars of the saltmarsh mosquito aedes taeniorhynchus. feeding trials were run at salinities of 1, 5, 15 and 25%. field trials were also conducted to determine if menidia would effectively control culex quinquefasciatus in brackish water im ... | 1985 | 3880260 |
| the impact of industrial anthropization on mosquito (diptera, culicidae) communities in mangrove areas of guanabara bay (rio de janeiro, brazil). | the effects of industrial anthropization on species composition and community diversity of culicidae (diptera) were studied in a mangrove area impacted by industrial activities as compared to a preserved area, both around guanabara bay in the state of rio de janeiro, brazil. diversity, equitability, and species richness in culicidae community differed between the studied areas. indicator species analysis and correspondence analysis were carried out and indicated that the sabethini, especially wy ... | 2012 | 23950012 |
| influence of fluctuating salinity on insecticide tolerance of two euryhaline arthropods. | among many other abiotic variations in an estuarine ecosystem, osmotic stress is an inescapable part of life. organisms living in such environments must cope with changing osmotic conditions by either behavioral or physiological adaptations. pollutants may increase the physiological stresses that an osmoregulating animal may encounter. we have developed a flow-through system that exposes test species to insecticides and continuously changing salinity conditions. this system has provided an insig ... | 2006 | 16813307 |
| osmotic effects as a factor modifying insecticide toxicity on aedes and artemia. | euryhaline species are more tolerant of various insecticides under isosmotic conditions. two euryhaline species, aedes taeniorhynchus (wiedemann) and artemia sp., were exposed to four insecticides (aldicarb, dimethoate, imidacloprid, tebufenozide), under isosmotic and hyperosmotic conditions. mortality under these two osmotic conditions was observed and compared to evaluate salinity as a contributing factor to insecticide toxicity. artemia was more tolerant of all chemicals tested than a. taenio ... | 1998 | 9756708 |
| mosquito (aedes taeniorhynchus) resistance to methoprene in an isolated habitat. | salt-marsh mosquitoes (aedes taeniorhynchus), collected on 2 barrier islands in lee county, florida, that had been treated from 1989 to 1994 with 150-day methoprene briquets, were bioassayed with technical s-methoprene in the laboratory. susceptibility of the indigenous captiva strain (median lethal concentration [lc50] estimate, 6.71 ppb) collected from captiva island was 14.9-fold lower than the naive flamingo strain (lc50 estimate, 0.45 ppb) from everglades national park. the lover's key stra ... | 1998 | 9673923 |
| the distribution of mosquitoes across an altitudinal gradient in the galapagos islands. | an avian malaria parasite (genus plasmodium) has been detected consistently in the galapagos penguin (spheniscus mendiculus) and less frequently in some passerines. we sampled three resident mosquito species (aedes taeniorhynchus, culex quinquefasciatus, and aedes aegypti) using cdc light and gravid traps on three islands in 2012, 2013, and 2014. we sampled along altitudinal gradients to ask whether there are mosquito-free refugia at higher elevations as there are in hawaii. we captured both ae. ... | 2017 | 29125252 |
| effects of mosquito control adulticides on sterile cochliomyia hominivorax (diptera: calliphoridae). | effects of mosquito control adulticides on sterile screwworm flies, cochliomyia hominivorax (coquerel) (diptera: calliphoridae), were investigated via bottle bioassays, outdoor cage tests, and exposure to treated vegetation. in bottle bioassays, 43 μg of permethrin via dilution of evoluer, 474.56 μg of malathion via dilution of fyfanon, and 25 μg of naled via dilution of dibrom concentrate were used to challenge screwworm flies. permethrin was more toxic to screwworm flies than was malathion, wh ... | 2018 | 29365134 |
| allethrin-based mosquito control device causing knockdown, morbidity, and mortality in four species of field-caught mosquitoes (diptera: culicidae). | a mosquito control device marketed for spatial repellency, the thermacell mosquito repellent appliance, was evaluated in semifield trials against multiple field-caught species of mosquito. using paper and mesh cages, mosquito test groups of at least 30 mosquitoes were suspended in a 2,337 cubic foot outdoor space while two thermacell repellent devices were active. after 30 min of treatment, cages were moved to the laboratory to observe knockdown, morbidity, and mortality for 24 h. species tested ... | 2015 | 26335485 |
| failure to predict abundance of saltmarsh mosquitoes aedes sollicitans and a. taeniorhynchus (diptera: culicidae) by using variables of tide and weather. | weather and tide variables were used to develop regression models with light trap counts of aedes sollicitans (walker) and aedes taeniorhynchus (wiedemann) from 1984 to 1995. rains, tides, and temperatures, both during and preceding the sample period, all showed significant correlations with trap counts. these multiple regression models forecasted general population levels during 1996 and 1997, but not the size of the peaks. therefore, weather alone can predict general trends but cannot be used ... | 1998 | 9615534 |
| analysis of the genetic variability and structure of ochlerotatus taeniorhynchus (diptera: culicidae) populations from the colombian atlantic coast on the basis of random amplified polymorphic dna markers. | ochlerotatus taeniorhynchus (diptera: culicidae) is a mosquito, which is an efficient vector of the virus causing epidemic-epizootic venezuelan equine encephalitis in colombia. this study used 9 random amplified polymorphic dna (rapd) markers to analyze the mosquito's genetic variability and genetic structure of 122 specimens in 7 populations from the colombian atlantic coast. assuming that all loci were in hardy-weinberg equilibrium, diversity statistics and analyses were performed. the average ... | 2014 | 24938703 |
| host selection and parasite infection in aedes taeniorhynchus, endemic disease vector in the galápagos islands. | host selection in blood-sucking arthropods has important evolutionary and ecological implications for the transmission dynamics, distribution and host-specificity of the parasites they transmit. the black salt-marsh mosquito (aedes taeniorhynchus wiedemann) is distributed throughout tropical to temperate coastal zones in the americas, and continental populations are primarily mammalphilic. it is the only indigenous mosquito in the galápagos islands, having colonised the archipelago around 200,00 ... | 2012 | 22921730 |
| aerial ultra-low-volume application of naled: impact on nontarget imperiled butterfly larvae (cyclargus thomasi bethunebakeri) and efficacy against adult mosquitoes (aedes taeniorhynchus). | we assessed the exposure and acute toxicity of naled, applied aerially as an ultra-low-volume spray for mosquito control, on late instar larvae of the miami blue (cyclargus thomasi bethunebakeri) (comstock and huntington 1943) (lepidoptera: lycaenidae), an imperiled south florida butterfly. we concurrently evaluated the control efficacy against caged adult female salt-marsh mosquitoes (aedes taeniorhynchus) (wiedemann 1821) (diptera: culicidae). this 3-yr study was conducted in north key largo ( ... | 2010 | 22182563 |
| identification and transcription profiling of trypsin in aedes taeniorhynchus (diptera: culicidae): developmental regulation, blood feeding, and permethrin exposure. | the cdna of a trypsin gene from aedes (ochlerotatus) taeniorhynchus (weidemann) was cloned and sequenced. the full-length mrna sequence (890 bp) for trypsin from ae. taeniorhynchus (aettryp1) was obtained, which encodes an open reading frame of 765 bp (i.e., 255 amino acids). to detect whether aettryp is developmentally regulated, a quantitative real-time polymerase chain reaction was used to examine aettrypl mrna expression levels in different developmental stages of ae. taeniorhynchus. aettryp ... | 2011 | 21661315 |
| the association between meteorological variables and the abundance of aedes taeniorhynchus in the florida keys. | the black salt marsh mosquito, aedes taeniorhynchus, is a serious nuisance pest and a potential vector of a number of arboviruses. this study examined the effect of wind direction, wind speed, temperature, and time of year on the abundance of ae. taeniorhynchus collected in co₂ -baited light traps at 12 sites in the florida keys during 2004. the dependent variable analyzed was the natural log of weekly mosquito abundance. the previous week's wind speed and wind direction, and the current week's ... | 2010 | 21175941 |
| seasonal effects and fine-scale population dynamics of aedes taeniorhynchus, a major disease vector in the galapagos islands. | characterization of the fine-scale population dynamics of the mosquito aedes taeniorhynchus is needed to improve our understanding of its role as a disease vector in the galapagos islands. we used microsatellite data to assess the genetic structure of coastal and highland mosquito populations and patterns of gene flow between the two habitats through time on santa cruz island. in addition, we assessed possible associations of mosquito abundance and genetic diversity with environmental variables. ... | 2010 | 20875066 |
| mosquito vector abundance immediately before and after tropical storms alma and arthur, northern belize, 2008. | to monitor adult mosquito abundance in northern belize before/after the first tropical storm of the wet season to estimate the time required for development/recovery of potential vector populations; determine which species predominate post-storm; and compare the effectiveness of two types of mosquito traps-octenol-baited mosquito magnets® and u.s. centers for disease control and prevention (cdc) light traps (with/without octenol). | 2010 | 20857016 |
| evaluation of temephos formulations against aedes taeniorhynchus larvae. | four commercially available temephos formulations (abate 4e, clarke 1% skeeter abate [1% sa], abate 2-bg, and abate 5-bg) were evaluated against 3rd instars of aedes taeniorhynchus in laboratory beaker tests and small field test plots. abate 4e liquid formulation was effective in both the laboratory and plot tests. 1% sa and abate 5-bg were more effective in the small field test plots than abate 2-bg. | 2009 | 19653508 |
| semiochemicals, traps/targets and mass trapping technology for mosquito management. | technologies which utilize semiochemicals, traps/targets and mass trapping are relatively new for management of adult mosquito populations. to date most of the emphasis has been on developing barriers of attractant-baited and insecticide-impregnated targets. the most successful continuous use of this type of technology has been at stevens' landing, collier county, fl. recently, commercially available traps have been evaluated for their ability to reduce nuisance populations of mosquitoes. use of ... | 2007 | 17853609 |
| efficacy studies of aquaprene (1.8% and 2.8% ai) sand granules and altosid xr-g (1.5% ai) sand granules against first and second instars of ochlerotatus taeniorhynchus as a preflood treatment in small field plots. | an efficacy study was conducted to evaluate sand granule formulations of aquaprene (1.8% and 2.8% active ingredient [ai]) and altosid xr-g (1.5% ai) as a preflood application against ochlerotatus taeniorhynchus larvae in small field test plots. aquaprene sand granules (2.8% al) were applied at 2.5 and 5 lb/acre and the 1.8% ai formulation at 4.2 lb/acre. the 1.8% ai formulation was compared with altosid xr-g sand granules (1.5% ai) applied at 5 lb/acre. plots were flooded after 7 days, and 1st a ... | 2007 | 17847853 |
| field tests of malathion and permethrin applied via a truck-mounted cold fogger to both open and vegetated habitats. | field tests of formulated permethrin (permanone 30:30) and malathion applied by ground ultra-low volume equipment were conducted using caged, laboratory-reared, adult ochlerotatus taeniorhynchus. cages were placed in an open field and also in semi-dense scrub pine. two doses, a high and a medium dose of each compound, were applied as suggested by the label. regardless of application rate, neither chemical provided satisfactory control under the canopy. the average mortality count at the open sit ... | 2007 | 17536368 |
| interisland dispersal of the black salt marsh mosquito, ochlerotatus taeniorhynchus (diptera: culicidae) in the florida keys. | mark-release-recapture experiments were conducted in 2001 and 2002 to determine whether ochlerotatus taeniorhynchus, black salt marsh mosquitoes, were dispersing from uninhabited islands in the key deer national wildlife refuge to inhabited islands within monroe county, florida. an estimated 1,658,000 mosquitoes were marked during 2001, and an estimated 300,000 mosquitoes were marked during 2002. recapture rates were 0.0061% and 0.0117%, respectively. oc. taeniorhynchus disperse from uninhabited ... | 2006 | 17304926 |
| traps and trapping techniques for adult mosquito control. | an overview is presented of the recent advancements in research activities conducted to evaluate mosquito traps, insecticide-impregnated targets baited with combinations of attractants, and strategies for using mass trapping techniques for adult mosquito population management. technologies that use semiochemicals (attractants), traps and targets, and mass trapping are relatively new for management of adult mosquito populations. to date, emphasis has been placed primarily on developing barriers o ... | 2006 | 17067051 |
| the effect of pesticide residue on caged mosquito bioassays. | wind tunnel experiments showed that secondary pickup of insecticide residue by mosquitoes in cage bioassays had a significant effect on mortality. cage bioassays using adult ochlerotatus taeniorhynchus (wiedemann) investigated the effect of exposure time to a contaminated surface. cages were dosed in a wind tunnel using the lc50 for naled (0.124 mg a.i./ml) and an lc25 (0.0772 mg a.i./ml) for naled. half of the bioassay mosquitoes were moved directly into clean cages with the other half remainin ... | 2006 | 17067048 |
| efficacy studies of aquaprene (emulsifiable concentrate and wettable powder) insect growth regulator formulations against third- and fourth-stage larvae of ochlerotatus taeniorhynchus in small-plot field studies. | efficacy studies were conducted with aquaprene emulsifiable concentrate (ec) (33.6% active ingredient [ai]) and wettable powder (wp) (40% ai) (s)-methoprene insect growth regulator formulations against larval ochlerotatus taeniorhynchus in small field test plots. aquaprene ec was applied at 7.18 and 9.57 g/acre. approximately one thousand 4th-stage larvae were added to each plot before treatment, and 24 h later pupae were collected to determine emergence inhibition. at both applications rates, a ... | 2006 | 16646333 |
| colonization of ochlerotatus taeniorhynchus from riohacha, colombia. | the main objective of the present work was to establish and maintain a colony of ochlerotatus taeniorhynchus, riohacha strain, under laboratory conditions and to study its life cycle. the colony's insectary was established from adult male and female mosquitoes collected from peripheral neighborhoods of riohacha, colombia. environmental conditions established in the insectary were 26.5 degrees c average temperature, 80% average relative humidity, and 12 h photoperiodicity. eight continuous genera ... | 2005 | 15825758 |
| a comparison of two ultra-low-volume spray nozzle systems by using a multiple swath scenario for the aerial application of fenthion against adult mosquitoes. | two hydraulic spray nozzle systems, a flat fan and a high-pressure hollow cone, were used for ultra-low-volume application of the mosquito adulticide fenthion under a multiple swath scheme. eight swaths at 322-m intervals were applied from a height of 91 m to simulate operational conditions. deposition, effects on nontarget organisms (fiddler crabs), aerial flux, and mosquito (ochlerotatus taeniorhynchus) mortality were monitored for 8,230 m downwind, including the area under all 8 swaths. the f ... | 2004 | 15088703 |
| a comparison of two spray nozzle systems used to aerially apply the ultra-low-volume adulticide fenthion. | field experiments with the mosquito adulticide fenthion (baytex) compared the conventional flat-fan nozzle system (tee jet 8002ss) and a new high-pressure hollow-cone nozzle system (1/8 miss). ground deposition and aerial flux of the mosquito adulticide fenthion were measured up to 4.83 km downwind by using filter paper and yarn collectors, respectively. biological efficacy was investigated by using caged salt-marsh mosquitoes (ochlerotatus taeniorhynchus), and caged fiddler crabs (uca pugilator ... | 2004 | 15088702 |
| factors affecting immatures of ochlerotatus taeniorhynchus (diptera: culicidae) in san diego county, california. | the effects of tide, temperature, rainfall, and salinity on the occurrence and abundance of immatures (instars and pupae) of the black salt marsh mosquito, ochlerotatus taeniorhynchus (wiedemann), were examined at a tidal pond in the tijuana estuary during 1996-1998. immatures were found between may and early september. tide had the greatest influence on immatures of this mosquito. eggs eclosed when tides averaged 1.96 +/- 0.10 (sd) m (1.83-2.19) 1-3 d before a flood tide. eclosion averaged once ... | 2003 | 14680101 |