| susceptibility of brevipalpus phoenicis to entomopathogenic fungi. | the pathogenicity of 52 isolates from several fungus species was studied for the false spider mite brevipalpus phoenicis. in addition, the main stages during the course of infection by hirsutella thompsonii, by far the most virulent pathogen, were studied by means of light and electron microscopy. adult mites were confined to arenas prepared with citrus leaves in acrylic dishes containing agar-water. conidial suspensions containing 10(8) conidia/ml were applied, except for h. thompsonii, where a ... | 2006 | 17004029 |
| reproductive performance of the mite brevipalpus phoenicis (geijskes, 1939) on citrus and coffee, using life table parameters. | the flat-mite brevipalpus phoenicis (geijskes, 1939) (acari: tenuipalpidae) is considered important in citrus (citrus spp.) and coffee plants (coffea spp.) in brazil, and is known as the leprosis and coffee ring spot mite, as being a vector of the citrus leprosis rhabdovirus - citlv and coffee ring spot virus - corsv. the objective of this work is to find out about the reproductive success of b. phoenicis on citric fruits and coffee leaves by fertility life table parameters and its biology. the ... | 2006 | 17119838 |
| species composition and abundance of brevipalpus spp. on different citrus species in mexican orchards. | we studied the abundance of brevipalpus spp. in citrus orchards in the mexican states of yucatan, quintana roo and campeche. mites were collected from 100 trees containing a mixture of citrus species where sweet orange was always the main species. eight collections were made at each location from february 2010 to february 2011. mites from the genus brevipalpus were separated from other mites surveyed and their abundance and relationships with the different citrus species were quantified througho ... | 2013 | 23949863 |
| effects of temperature, storage period and the number of individuals on the detection of the false spider mite cardinium endosymbiont. | cardinium have been found as endosymbionts of brevipalpus phoenicis, the mite vector of the citrus leprosis virus. with the long-term objective being to understand the mechanisms of plant-virus-vector interactions, we evaluated the different storage conditions and periods, as well as the number of mites needed for pcr-amplification of such endosymbionts, making it possible to collect mites in different geographical regions without prolonged storage compromising subsequent analyses. | 2007 | 17447014 |
| initial screening of little known predatory mites in brazil as potential pest control agents. | the objective of this study was to evaluate the oviposition rate and the survivorship of some of the most common predators on plants of the natural vegetation of southeastern brazil, when confined with different food sources. forty-four laboratory tests were carried out, each corresponding to a different combination of predator species and food source. the predators tested were: phytoseiidae--amblyseius acalyphus, euseius citrifolius, iphiseiodes zuluagai, metaseiulus (metaseiulus) camelliae, ty ... | 2006 | 16770686 |
| mitochondrial dna and rapd polymorphisms in the haploid mite brevipalpus phoenicis (acari: tenuipalpidae). | brevipalpus phoenicis (geijskes) (acari: tenuipalpidae) is recognized as the vector of citrus leprosis virus that is a significant problem in several south american countries. citrus leprosis has been reported from florida in the past but no longer occurs on citrus in north america. the disease was recently reported in central america, suggesting that b. phoenicis constitutes a potential threat to the citrus industries of north america and the caribbean. besides b. phoenicis, b. obovatus donnadi ... | 2004 | 15651525 |
| passion fruit green spot virus vectored by brevipalpus phoenicis (acari: tenuipalpidae) on passion fruit in brazil. | passion fruit green spot disease was first identified in 1997 after a severe outbreak at vera cruz county, state of são paulo, brazil. mature yellow fruits of passiflora edulis simms f. flavicarpa degener showed characteristic green spots, 2-5 mm in diameter and patches of green tissues were present on senescent leaves. the devastating effect to passion flower is caused by necrotic lesions that encircle the stems and kill the plant. in severe cases, entire orchards of a few hectares in size have ... | 2003 | 14756419 |
| coffee ringspot virus vectored by brevipalpus phoenicis (acari: tenuipalpidae) in coffee. | coffee ringspot is characterized by conspicuous ringspot symptoms on leaves, berries, and less frequently on twigs. it is caused by coffee ringspot virus (corsv), a short, bacilliform virus (40 nm x 100-110 nm). the virus is not seed borne and is transmitted by brevipalpus phoenicis (geijskes). transovarial transmission within the mite does not occur. corsv has been mechanically transmitted to chenopodium amaranticolor coste and reynaud, c. quinoa wildenow, beta vulgaris l., and alternanthera te ... | 2003 | 14756417 |
| [resistance of brevipalpus phoenicis (geijskes) (acari: tenuipalpidae) to acaricides that inhibit cellular respiration in citrus: cross-resistance and fitness cost]. | acaricides that inhibit cellular respiration play an important role in the control of brevipalpus phoenicis (geijskes) in citrus groves in brazil. studies were conducted to evaluate: (a) the variability in the susceptibility among b. phoenicis populations collected from citrus groves to cyhexatin, azocyclotin, propargite and sulphur; (b) cross-resistance relationships between propargite and azocyclotin, cyhexatin, dinocap, pyridaben and sulphur; and (c) the fitness cost associated with propargit ... | 2015 | 17934623 |
| citrus leprosis virus vectored by brevipalpus phoenicis (acari: tenuipalpidae) on citrus in brazil. | citrus leprosis is caused by citrus leprosis virus (cilv) that is transmitted by mites in the genus brevipalpus (acari: tenuipalpidae). this disease directly reduces production and the life span of the citrus plant. the main symptoms of the disease include lesions on fruits, leaves, and twigs or small branches, causing premature fruit drop, defoliation, and death of the twigs or branches leading to serious tree decline. leprosis is a highly destructive disease of citrus, wherever it occurs. the ... | 2003 | 14756415 |
| resistance to hexythiazox in brevipalpus phoenicis (acari: tenuipalpidae) from brazilian citrus. | the objective of this study was to collect baseline information for implementing an acaricide resistance management program of brevipalpus phoenicis (geijskes) to hexythiazox in brazilian citrus groves. the egg susceptibility of b. phoenicis to hexythiazox was measured by a direct contact bioassay. the estimated lc50 for the s strain was 0.89 mg hexythiazox l(-1) of water (95% fl 0.75-1.03). after hexythiazox selection of a field-collected population associated with intense hexythiazox use, a re ... | 2002 | 12537296 |
| phytophagous mite populations on tahiti lime, citrus latifolia, under induced drought conditions. | in the north-western region of venezuela, phyllocoptruta oleivora, tetranychus mexicanus and brevipalpus phoenicis are common plant-feeding mites on leaves, fruits and branches of tahiti lime, citrus latifolia. the population dynamics of these herbivores are affected by many factors, such as weekly treatments with wettable sulphur, particularly during the wet season, maintenance pruning of plants, irrigation with microsprinklers, induction of water stress by withholding irrigation and biotic and ... | 2000 | 11354617 |
| weed management practices affect the diversity and relative abundance of physic nut mites. | crop management practices determine weed community, which in turn may influence patterns of diversity and abundance of associated arthropods. this study aimed to evaluate whether local weed management practices influence the diversity and relative abundance of phytophagous and predatory mites, as well as mites with undefined feeding habits--of the families oribatidae and acaridae--in a physic nut (jatropha curcas l.) plantation subjected to (1) within-row herbicide spraying and between-row mowin ... | 2015 | 25528451 |
| status of aceria guerreronis keifer (acari: eriophyidae) as a pest of coconut in the state of sao paulo, southeastern brazil. | the coconut mite, aceria guerreronis keifer, is one of the main pests of coconut palms (cocos nucifera) in northeastern brazil. the objective of this study was to evaluate the levels of the coconut mite and other mites on coconut palms in the state of são paulo and to estimate the possible role of predatory mites in the control of this pest. the effect of cultivated genotypes and sampling dates on the mite populations was also estimated. we sampled attached fruits, leaflets, inflorescences, and ... | 2012 | 23950068 |
| citrus leprosis and its status in florida and texas: past and present. | according to published reports from 1906 to 1968, leprosis nearly destroyed the florida citrus industry prior to 1925. this was supported with photographs showing typical leprosis symptoms on citrus leaves, fruit, and twigs. support for the past occurrence of citrus leprosis in florida includes: (1) presence of twig lesions in affected orange blocks in addition to lesions on fruits and leaves and corresponding absence of similar lesions on grapefruit; (2) yield reduction and die-back on infected ... | 2003 | 14756416 |
| the influence of citrus rootstocks on the relationship between the mite brevipalpus phoenicis and citrus leprosis disease. | leprosis is one of the most serious citrus plant diseases. leprosis-affected plants, especially sweet orange [citrus sinensis (l.) osbeck], which is the most widely cultivated citrus fruit worldwide, show reduced photosynthetic capacity and severe defoliation. the aim was to evaluate the relationship between the brevipalpus phoenicis (geijskes) vector mite and citrus leprosis disease in pera sweet orange plants grafted on different rootstocks. data were analysed using numerical classification an ... | 2013 | 22807324 |
| citrus leprosis virus n: a new dichorhavirus causing citrus leprosis disease. | citrus leprosis (cl) is a viral disease endemic to the western hemisphere that produces local-necrotic and -chlorotic lesions on leaves, branches and fruits and causes serious yield reduction in citrus orchards. samples of sweet orange (citrus × sinensis) trees showing cl symptoms were collected during a survey in non-commercial citrus areas in the southeast region of brazil in 2013-2016. transmission electron microscopy analyses of foliar lesions confirmed the presence of rod-like viral particl ... | 2017 | 28398876 |
| a novel virus of the genus cilevirus causing symptoms similar to citrus leprosis. | citrus leprosis in colombia was previously shown to be caused by cytoplasmic citrus leprosis virus (cilv-c). in 2011, enzyme-linked immunosorbent assay and reverse-transcription polymerase chain reaction (rt-pcr)-based diagnostic methods failed to identify cilv-c from citrus samples with symptoms similar to citrus leprosis; however, virions similar to cilv-c were observed in the cytoplasm of the symptomatic leaves by transmission electron microscopy. furthermore, the causal organism was transmit ... | 2013 | 23268581 |
| role bending: complex relationships between viruses, hosts, and vectors related to citrus leprosis, an emerging disease. | citrus leprosis complex is an emerging disease in the americas, associated with two unrelated taxa of viruses distributed in south, central, and north america. the cytoplasmic viruses are citrus leprosis virus c (cilv-c), citrus leprosis virus c2 (cilv-c2), and hibiscus green spot virus 2, and the nuclear viruses are citrus leprosis virus n (cilv-n) and citrus necrotic spot virus. these viruses cause local lesion infections in all known hosts, with no natural systemic host identified to date. al ... | 2015 | 25775106 |
| infestation dynamics of brevipalpus phoenicis (geijskes) (acari: tenuipalpidae) in citrus orchards as affected by edaphic and climatic variables. | brevipalpus phoenicis (geijskes) is a cosmopolitan and polyphagous mite that transmits important phytoviruses, such as coffee ringspot virus, passion fruit green spot virus and citrus leprosis virus c. to characterise the dynamics of the probability and the rate of b. phoenicis infestation in response to edaphic and climatic factors, monthly inspections were performed in nine orchards in a citrus region of the state of bahia, brazil, for 35 months. three fruits per plant were examined using a ma ... | 2015 | 26021609 |
| diversity and genetic variation among brevipalpus populations from brazil and mexico. | brevipalpus phoenicis s.l. is an economically important vector of the citrus leprosis virus-c (cilv-c), one of the most severe diseases attacking citrus orchards worldwide. effective control strategies for this mite should be designed based on basic information including its population structure, and particularly the factors that influence its dynamics. we sampled sweet orange orchards extensively in eight locations in brazil and 12 in mexico. population genetic structure and genetic variation b ... | 2015 | 26207373 |
| inheritance and heritability of resistance to citrus leprosis. | abstract the genetic inheritance of resistance to leprosis, the most important viral disease of citrus in brazil, was characterized through the phenotypic assessment of 143 hybrids resulting from crosses between tangor 'murcott' (citrus sinensis x c. reticulata) and sweet orange 'pêra' (c. sinensis), considered to be resistant and susceptible to the disease, respectively. all plants were grafted onto rangpur lime (c. limonia) and inoculated with citrus leprosis virus, cytoplasmic type through th ... | 2006 | 18943497 |
| effects of radiation (cobalt-60) on the elimination of brevipalpus phoenicis (acari: tenuipalpidae) cardinium endosymbiont. | brevipalpus phoenicis (geijskes) (acari: tenuipalpidae) is a polyphagous mite with worldwide distribution and it is also a vector of several plant viruses. in citrus, b. phoenicis transmits citrus leprosis virus (cilv), the causal agent of leprosis, a disease that costs millions of dollars per year for its prevention and control. brevipalpus phoenicis mites reproduce through thelytokous parthenogenesis, producing haploid females. this characteristic is attributable to the presence of an endosymb ... | 2008 | 18648995 |
| population dynamics of phytophagous and predaceous mites on coffee in brazil, with emphasis on brevipalpus phoenicis (acari: tenuipalpidae). | the objective of this work was to study the population dynamics of brevipalpus phoenicis (geijskes) and predaceous mites (phytoseiidae and stigmaeidae), as well as the interactions among these mite species, in a coffee plantation in the state of são paulo, brazil. tydeids were also evaluated because of the high frequency of these mites on coffee plants. samples of leaves, branches and fruits were taken fortnightly, from april 2001 to june 2003, from plants randomly chosen in the coffee plantatio ... | 2008 | 18404408 |
| life history of amblyseius herbicolus (chant) (acari: phytoseiidae) on coffee plants. | the predaceous mite amblyseius herbicolus (chant) is the second most abundant phytoseiid on coffee plants (coffea arabica l), after euseius alatus deleon, in lavras, mg, brazil, associated to the vector of the coffee ring spot virus, brevipalpus phoenicis (geijskes) (acari: tenuipalpidae). its life history was studied taking into account biological aspects, life table, predatory activity and functional and numerical responses in relation to the density of the prey. the adult female has longevity ... | 2007 | 17607463 |
| [life cycle of proprioseiopsis cannaensis (muma) (acari: phytoseiidae) on different types of food]. | several annual and perennial crops are severely attacked by mites from the family eriophyidae, tenuipalpidae and tetranychidae. a suitable alternative commonly used in several countries for the control of these pest mites involve the use of predatory mites in the family phytoseiidae. the phytoseiid fauna in the brazilian natural vegetation is very rich, but nothing is known about the biology of most of these species, as it is the case with proprioseiopsis cannaensis (muma). the objective of this ... | 2010 | 20676508 |
| detection and survey of coffee ringspot virus in brazil. | coffee ringspot virus (corsv) a member of the proposed genus "dichorhavirus", was surveyed on commercial and research farms spanning an area responsible for the majority of coffea arabica production in brazil. virus-infected plants were found at one hundred percent of locations (n = 45) sampled. all cultivars, regardless of cherry color, were found to serve as hosts, suggesting that there is limited resistance in commercially employed germplasm. reverse transcription pcr analysis revealed that t ... | 2016 | 26553342 |
| interspecific interactions involving neoseiulus californicus (acari: phytoseiidae) and agistemus brasiliensis (acari: stigmaeidae) as predators of brevipalpus phoenicis (acari: tenuipalpidae). | brevipalpus phoenicis (geijskes) is associated with the transmission of citrus leprosis which is considered the main viral disease for the brazilian citrus production. mites of the families stigmaeidae and phytoseiidae coexist in various agricultural crops, often promoting the biological control of pest mites. the aim of this work was to study the interactions of neoseiulus californicus (mcgregor) (phytoseiidae) and agistemus brasiliensis matioli, ueckermann & oliveira (stigmaeidae), in the pres ... | 2015 | 25524512 |
| [biology of agistemus brasiliensis matioli, ueckermann & oliveira (acari: stigmaeidae) and its predation potential on brevipalpus phoenicis (geijskes) (acari: tenuipalpidae)]. | the present work aimed to study the biology of agistemus brasiliensis matioli, ueckermann & oliveira at the following temperatures, namely 15, 20, 25, 30 and 35 degrees c, fed with brevipalpus phoenicis (geijskes) and typha pollen, in laboratory conditions. life tables were calculated to evaluate the biological parameters. the optimal development of a. brasiliensis took place at 29 degrees c. the values of t (time of generation - days), r0 and r m at 30 degrees c were, 13.95, 16.25 and 0.20, res ... | 2007 | 17934624 |
| cardinium symbionts induce haploid thelytoky in most clones of three closely related brevipalpus species. | bacterial symbionts that manipulate the reproduction of their host to increase their own transmission are widespread. most of these bacteria are wolbachia, but recently a new bacterium, named cardinium, was discovered that is capable of the same manipulations. in the host species brevipalpus phoenicis (acari: tenuipalpidae) this bacterium induces thelytoky by feminizing unfertilized haploid eggs. the related species b. obovatus and b. californicus are thelytokous too, suggesting that they reprod ... | 2006 | 16900311 |
| [perspectives for mass rearing of iphiseiodes zuluagai denmark & muma (acari: phytoseiidae)]. | iphiseiodes zuluagai denmark & muma is an important predator of brevipalpus phoenicis (geijskes) on citrus in brazil. the suitability of tyrophagus putrescentiae (schrank) as a food source of i. zuluagai in laboratory rearing was investigated at 25.5 +/- 0.5 masculinec, 88 +/- 7% ru and photophase of 12h. initially, levels of oviposition of the predator fed on eggs were evaluated, as well as the dead or live post-embryonic stages of t. putrescentiae, in a period of 10 days. the daily oviposition ... | 2008 | 18641905 |
| brevipalpus phoenicis (geijskes) species complex (acari: tenuipalpidae)--a closer look. | brevipalpus phoenicis sensu stricto (geijskes) is redescribed and the species diagnosis established. two former synonyms of b. phoenicis sensu lato, b. yothersi baker and b. papayensis baker, are resurrected and redescribed and their species diagnoses established. brevipalpus hondurani evans is also redescribed and diagnosed. four new species, previously misidentified as b. phoenicis sensu lato or b. obovatus donnadieu, are described--b. azores sp. nov., b. feresi sp. nov., b. ferraguti sp. nov. ... | 2015 | 25947538 |
| [effect of culture media on virulence of hirsutella thompsonii (fischer) (deuteromycetes) to control brevipalpus phoenicis (geijskes) (acari: tenuipalpidae)]. | the virulence of hirsutella thompsonii (fischer) to brevipalpus phoenicis (geijskes) was evaluated in laboratory, grown on complete and solid culture media (mc-s); complete and liquid culture media (mc-l); rice (apc) and powdered rice (apc-sm). adults were confined to arenas prepared with citrus leaves in acrylic dishes containing water-agar. conidial suspensions were prepared at different concentration (3.2 x 10(5) to 1 x 10(7) spores/ml) and applied on mites to establish the table curve-respon ... | 2008 | 18641903 |
| a mite species that consists entirely of haploid females. | the dominance of the diploid state in higher organisms, with haploidy generally confined to the gametic phase, has led to the perception that diploidy is favored by selection. this view is highlighted by the fact that no known female organism within the metazoa exists exclusively (or even for a prolonged period) in a haploid state. we used fluorescence microscopy and variation at nine microsatellite loci to show that the false spider mite, brevipalpus phoenicis, consists of haploid female parthe ... | 2001 | 11431565 |
| morphological observations on brevipalpus phoenicis (acari: tenuipalpidae) including comparisons with b. californicus and b. obovatus. | the genus brevipalpus has over 300 species worldwide. the three most important agricultural pest species in the genus, brevipalpus californicus (banks), b. obovatus donnadieu, and b. phoenicis (geijskes), have been consistently confused and misidentified for more than 50 years. the present study provides a discussion of the characters and character states used to separate these mites. low-temperature scanning electron microscopy and traditional light microscopy techniques were used to illustrate ... | 2003 | 14756413 |
| sub-lethal effects of fenbutatin oxide on prey location by the predatory mite iphiseiodes zuluagai (acari: phytoseiidae). | we used a y-tube olfactometer to assess the sub-lethal effects of the acaricide fenbutatin oxide on the olfactory response of the predatory mite iphiseiodes zuluagai towards odours from: (1) air or undamaged coffee plants; (2) undamaged or red spider mite oligonychus ilicis-infested coffee plants; (3) undamaged or false spider mite brevipalpus phoenicis-infested coffee plants. predatory mite adult females were exposed to residues of fenbutatin oxide or distilled water on leaf discs during a peri ... | 2009 | 19009359 |
| adaptation in the asexual false spider mite brevipalpus phoenicis: evidence for frozen niche variation. | because asexual species lack recombination, they have little opportunity to produce genetically variable offspring and cannot adapt to changes in their environment. however, a number of asexual species are very successful and appear to contradict this general view. one such species is the phytophagous mite brevipalpus phoenicis (geijskes), a species that is found in a wide range of environments. there are two general explanations for this pattern, the general purpose genotype (gpg) and frozen ni ... | 2005 | 16132731 |
| biology of brevipalpus phoenicis (geijskes) (tenuipalpidae: acarina). | | 1979 | 474063 |
| mites occurrence on pachira aquatica aubl. including aspects of external mouthpart morphology of brachytydeus formosa (acari: tydeidae). | pachira aquatica aubl. is commonly used as an ornamental plant in urban areas of brazil. the objective of the study was to investigate the occurrence of mites on p. aquatica, with emphasis on brachytydeus formosa (cooreman), and to describe aspects the external features of its mouthpart. the study was conducted in 2012 in jaboticabal, state of são paulo, brazil. ten trees of p. aquatica were selected for the experiment. approximately 130 leaflets were collected from each tree, which were located ... | 2016 | 26871751 |
| [stability of brevipalpus phoenicis (geijskes) (acari: tenuipalpidae) resistance to hexythiazox in citrus groves]. | the false spider mite, brevipalpus phoenicis (geijskes), is one the most important pests of the citrus groves and transmits the citrus leprosis virus. the acaricide hexythiazox has been widely used for controlling b. phoenicis in citrus groves. the resistance of this species to hexythiazox has already been detected at high frequencies at some locations. in order to implement a resistance management program, studies were undertaken to understand the stability of the resistance of b. phoenicis to ... | 2007 | 17273718 |