Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
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| population structure in relation to host-plant ecology and wolbachia infestation in the comma butterfly. | experimental work on polygonia c-album, a temperate polyphagous butterfly species, has shown that swedish, belgian, norwegian and estonian females are generalists with respect to host-plant preference, whereas females from uk and spain are specialized on urticaceae. female preference is known to have a strong genetic component. we test whether the specialist and generalist populations form respective genetic clusters using data from mitochondrial sequences and 10 microsatellite loci. results do ... | 2011 | 21745252 |
| the value of an egg: resource reallocation in ladybirds (coleoptera: coccinellidae) infected with male-killing bacteria. | male-killing bacteria are thought to persist in host populations by vertical transmission and conferring direct and/or indirect fitness benefits to their hosts. here, we test the role of indirect fitness benefits accrued from resource reallocation in species that engage in sibling egg cannibalism. we found that a single-egg meal significantly increased larval survival in 12 ladybird species, but the value of an egg (to survival) differed substantially between species. next, we tested the impact ... | 2011 | 21745250 |
| survey of wolbachia and its phage wo in the uzifly exorista sorbillans (diptera: tachinidae). | wolbachia are cytoplasmically inherited alpha-proteobacteria well known for inducing a variety of reproductive abnormalities in the diverse arthropod hosts they infect. despite their obligate intracellular lifestyle which usually protects bacteria from phage infection, wolbachia harbor a widespread temperate phage called wo. evidences of horizontal phage transfers indicate that this phage could promote genetic exchanges between strains leading to evolutionary changes in the genomes of wolbachia, ... | 2011 | 21739251 |
| onchocerciasis: the role of wolbachia bacterial endosymbionts in parasite biology, disease pathogenesis, and treatment. | the discovery of wolbachia intracellular bacteria within filarial nematodes, including onchocerca volvulus, the causative agent of onchocerciasis or "river blindness," has delivered a paradigm shift in our understanding of the parasite's biology, to where we now know that the bacterial endosymbionts are essential for normal development of larvae and embryos and may support the long-term survival of adult worms. the apparent mutualistic dependency has also offered a novel approach to the treatmen ... | 2011 | 21734243 |
| new insights into the evolution of wolbachia infections in filarial nematodes inferred from a large range of screened species. | wolbachia are intriguing symbiotic endobacteria with a peculiar host range that includes arthropods and a single nematode family, the onchocercidae encompassing agents of filariases. this raises the question of the origin of infection in filariae. wolbachia infect the female germline and the hypodermis. some evidences lead to the theory that wolbachia act as mutualist and coevolved with filariae from one infection event: their removal sterilizes female filariae; all the specimens of a positive s ... | 2011 | 21731626 |
| wolbachia infections in world populations of bean beetles (coleoptera: chrysomelidae: bruchinae) infesting cultivated and wild legumes. | wolbachia endosymbionts are widespread among insects and other arthropods, often causing cytoplasmic incompatibility and other reproductive phenotypes in their hosts. recently, possibilities of wolbachia-mediated pest control and management have been proposed, and the bean beetles of the subfamily bruchinae are known as serious pests of harvested and stored beans worldwide. here we investigated wolbachia infections in bean beetles from the world, representing seven genera, 20 species and 87 popu ... | 2011 | 21728798 |
| regulation of wolbachia ankyrin domain encoding genes in drosophila gonads. | the maternally inherited obligatory intracellular bacterium wolbachia is a reproductive parasite of many insect species. wolbachia evades the host immune system, uses the mitotic apparatus to ensure infection of daughter cells, migrates through the host to the gonads and causes reproductive phenotypes, most commonly cytoplasmic incompatibility (ci), i.e. incompatibility of sperm from infected males and eggs from uninfected females. due to the interconnected facts that wolbachia is not ex-ávivo c ... | 2011 | 21726632 |
| filariasis in africa--treatment challenges and prospects. | lymphatic filariasis (lf) and onchocerciasis are parasitic nematode infections that are responsible for a major disease burden in the african continent. disease symptoms are induced by the immune reactions of the host, with lymphoedema and hydrocoele in lf, and dermatitis and ocular inflammation in onchocerciasis. wuchereria bancrofti and onchocerca volvulus, the species causing lf and onchocerciasis in africa, live in mutual symbiosis with wolbachia endobacteria, which cause a major part of the ... | 2011 | 21722251 |
| effects of wolbachia on genetic divergence between populations: mainland-island model. | cytoplasmic incompatibility (ci) induced by intracellular bacteria is a possible mechanism for speciation. growing empirical evidence suggests that bacteria of the group wolbachia may indeed act as isolating factors in recent insect speciation. wolbachia are cytoplasmically transmitted and can cause uni- or bidirectional ci. we present a mainland-island model to investigate how much impact wolbachia can have on genetic divergence between populations. in the first scenario we assume that the isla ... | 2002 | 21708727 |
| distribution of wolbachia within drosophila reproductive tissue: implications for the expression of cytoplasmic incompatibility. | a pcr based quantitative assay was used to determine wolbachia infection levels in three different drosophila strains. in addition, confocal microscopy was used to confirm and calibrate these results. wolbachia infection levels ranged from 2,600 to 18,500 per egg. single ovaries and testes from each of the three strains were also assayed using the calibrated quantitative pcr assay. a general correlation was found between bacterial levels in eggs and those found in ovaries and testis. these infec ... | 2002 | 21708726 |
| macrofilaricidal activity in wuchereria bancrofti after 2 weeks treatment with a combination of rifampicin plus doxycycline. | infection with the filarial nematode wuchereria bancrofti can lead to lymphedema, hydrocele, and elephantiasis. since adult worms cause pathology in lymphatic filariasis (lf), it is imperative to discover macrofilaricidal drugs for the treatment of the infection. endosymbiotic wolbachia in filariae have emerged as a new target for antibiotics which can lead to macrofilaricidal effects. in ghana, a pilot study was carried out with 39 lf-infected men; 12 were treated with 200ôçëmg doxycycline/day ... | 2011 | 21687646 |
| characterization of an intergenic polymorphic site (pp-hc1a_5) in wolbachia pipientis (wpip). | wolbachia pipientis (wpip) is an intracellular bacterium causing cytoplasmic incompatibility in arthropods, including mosquitoes of the culex pipiens complex. here, we present a method useful for genotyping within the wpip group. primers were designed using a tandem repeat finder program to amplify an intergenic, polymorphic site (pp-hc1a_5) of wpip. the polymorphic site is located between genes that code for polynucleotide phosphorylase and a hypothetical protein (c1a_5). comparison of these wp ... | 2011 | 21676204 |
| co-existence, phylogeny and putative role of wolbachia and yeast-like symbiont (yls) in kerria lacca (kerr). | this study reports the first detection of wolbachia and yeast-like symbiont (yls) harbored in kerria lacca (kerr), a scale insect, latter of which produces an economically important natural resin, known as lac. wolbachia was detected using pcr amplification and sequencing of 16s rdna; and further confirmation and phylogenetic analysis was carried out by fast evolving wsp gene. neighbor-joining and maximum parsimonious (mp) analysis showed that this strain belongs to subgroup "ori" of wolbachia s ... | 2011 | 21674166 |
| clonal genetic variation in a wolbachia-infected asexual wasp: horizontal transmission or historical sex? | wolbachia are endocellular bacteria known for manipulating the reproductive systems of many of their invertebrate hosts. wolbachia are transmitted vertically from mother to offspring. in addition, new infections result from horizontal transmission between different host species. however, to what extent horizontal transmission plays a role in the spread of a new infection through the host population is unknown. here, we investigate whether horizontal transmission of wolbachia can explain clonal g ... | 2011 | 21668807 |
| the impact of endosymbionts on the evolution of host sex-determination mechanisms. | the past years have revealed that inherited bacterial endosymbionts are important sources of evolutionary novelty for their eukaryotic hosts. in this review we discuss a fundamental biological process of eukaryotes influenced by bacterial endosymbionts: the mechanisms of sex determination. because they are maternally inherited, several endosymbionts of arthropods, known as reproductive parasites, have developed strategies to convert non-transmitting male hosts into transmitting females through f ... | 2011 | 21663992 |
| tissue and stage-specific distribution of wolbachia in brugia malayi. | most filarial parasite species contain wolbachia, obligatory bacterial endosymbionts that are crucial for filarial development and reproduction. they are targets for alternative chemotherapy, but their role in the biology of filarial nematodes is not well understood. light microscopy provides important information on morphology, localization and potential function of these bacteria. surprisingly, immunohistology and in situ hybridization techniques have not been widely used to monitor wolbachia ... | 2011 | 21629728 |
| wolbachia infections are virulent and inhibit the human malaria parasite plasmodium falciparum in anopheles gambiae. | endosymbiotic wolbachia bacteria are potent modulators of pathogen infection and transmission in multiple naturally and artificially infected insect species, including important vectors of human pathogens. anopheles mosquitoes are naturally uninfected with wolbachia, and stable artificial infections have not yet succeeded in this genus. recent techniques have enabled establishment of somatic wolbachia infections in anopheles. here, we characterize somatic infections of two diverse wolbachia stra ... | 2011 | 21625582 |
| a fluorescent-based method for rapid wolbachia detection in the drosophila germline and somatic tissues. | wolbachia is a globally distributed bacterial endosymbiont present in arthropods and nematodes. the advent of sensitive pcr-based approaches has greatly facilitated the identification of wolbachia-infected individuals and analysis of populations infection levels. here, a complementary visual fluorescence-based wolbachia screening approach is described. through the use of the fluorescent-dye syto-11, wolbachia can be efficiently detected in various insect tissues, including ovaries. syto-11 also ... | 2011 | 21622788 |
| rickettsia, ehrlichia, anaplasma, and bartonella in ticks and fleas from dogs and cats in bangkok. | abstract flea and tick specimens (5-10 fleas or ticks) on dogs and cats from various sites in bangkok were tested by polymerase chain reaction and dna sequencing to detect dna of bacteria rickettsia (glta and 17 kda genes), anaplasmataceae (16s rrna gene), and bartonella (pap31 and its genes). we confirmed that rickettsia sp. related to rickettsia felis was detected in 66 of 98 (67.4%) flea specimens from dogs, whereas 8 bartonella henselae and 2 bartonella clarridgeiae were detected in 10 of 54 ... | 2011 | 21612535 |
| comparative evaluation of a point-of-care immunochromatographic test snap 4dx with molecular detection tests for vector-borne canine pathogens in hong kong. | abstract there are no comprehensive studies on the performance of commonly used point-of-care diagnostic enzyme immunoassay for common arthropod-borne canine pathogens. a comparative evaluation of an immunochromatographic test for these infections with a comprehensive polymerase chain reaction (pcr) test panel was performed on 100 pet dogs and 100 stray dogs without obvious clinical symptoms. of the 162 positive test results from both immunochromatographic test and pcr, there was 85.2% concordan ... | 2011 | 21612526 |
| stage-specific proteomic expression patterns of the human filarial parasite brugia malayi and its endosymbiont wolbachia. | global proteomic analyses of pathogens have thus far been limited to unicellular organisms (e.g., protozoa and bacteria). proteomic analyses of most eukaryotic pathogens (e.g., helminths) have been restricted to specific organs, specific stages, or secretomes. we report here a large-scale proteomic characterization of almost all the major mammalian stages of brugia malayi, a causative agent of lymphatic filariasis, resulting in the identification of more than 62% of the products predicted from t ... | 2011 | 21606368 |
| [symbiotic bacteria, which modify reproduction processes of drosophila melanogaster]. | cytoplasmic bacteria-symbionts are actively investigated all over the world for the last ten years. the scale of their spreading in natural and laboratory populations of invertebrates, especially arthropods, is impressing scientists' imagination. ways of their intraspecific and interspecific transmission are various. the nature and mechanisms of their interaction both between themselves and with their hosts are extremely diverse. cytoplasmic incompatibility, parthenogenesis, male-killing, femini ... | 2011 | 21598659 |
| wolbachia-mediated persistence of mtdna from a potentially extinct species. | drosophila quinaria is polymorphic for infection with wolbachia, a maternally transmitted endosymbiont. wolbachia-infected individuals carry mtdna that is only distantly related to the mtdna of uninfected individuals, and the clade encompassing all mtdna haplotypes within d. quinaria also includes the mtdna of several other species of drosophila. nuclear gene variation reveals no difference between the wolbachia-infected and uninfected individuals of d. quinaria, indicating that they all belong ... | 2011 | 21595768 |
| mitochondrial phylogenies in the light of pseudogenes and wolbachia: re-assessment of a bark beetle dataset. | phylogenetic studies based on mtdna become increasingly questioned because of potential pitfalls due to mitochondrial pseudogenes and mitochondrial selective sweeps. while the inclusion of nuclear markers should preferentially be considered for future studies, there is no need to abandon mtdna as long as tests for the known mtdna artefacts are performed. in this study we presentadditionaldata and test previous phylogeographical studies of pityogenes chalcographus. we did not detect nuclear copie ... | 2010 | 21594185 |
| isolation and characterization of 30 polymorphic microsatellite loci from the mycophagous fly drosophila innubila. | drosophila innubila is a mushroom-feeding member of the quinaria group, found in the woodlands and forests of the 'sky islands' in arizona and new mexico and extending south into central mexico. here, we describe and characterize 30 polymorphic microsatellite loci from d. innubila collected in the chiricahua mountains in arizona. the number of alleles ranged from three to 21, and observed heterozygosity ranged from 0.0513 to 0.9737. six loci were putatively x-linked, six departed from hardy-wein ... | 2008 | 21585936 |
| wolbachia screening in spiders and assessment of horizontal transmission between predator and prey. | recent studies have revealed that the prevalence of wolbachia in arthropods is attributable not only to its vertical transmission, but also to its horizontal transfer. in order to assess the horizontal transmission of wolbachia between predator and prey, arthropods belonging to 11 spider families and six insect families were collected in the same field of rice. the distribution of wolbachia in these arthropods was detected by diagnostic pcr amplification of the wsp (wolbachia outer surface prote ... | 2011 | 21584395 |
| wolbachia uses host micrornas to manipulate host gene expression and facilitate colonization of the dengue vector aedes aegypti. | the obligate endosymbiont wolbachia pipientis is found in a wide range of invertebrates where they are best known for manipulating host reproduction. recent studies have shown that wolbachia also can modulate the lifespan of host insects and interfere with the development of human pathogens in mosquito vectors. despite considerable study, very little is known about the molecular interactions between wolbachia and its hosts that might mediate these effects. using microarrays, we show that the mic ... | 2011 | 21576469 |
| wolbachia prophage dna adenine methyltransferase genes in different drosophila-wolbachia associations. | wolbachia is an obligatory intracellular bacterium which often manipulates the reproduction of its insect and isopod hosts. in contrast, wolbachia is an essential symbiont in filarial nematodes. lately, wolbachia has been implicated in genomic imprinting of host dna through cytosine methylation. the importance of dna methylation in cell fate and biology calls for in depth studing of putative methylation-related genes. we present a molecular and phylogenetic analysis of a putative dna adenine met ... | 2011 | 21573076 |
| a new model and method for understanding wolbachia-induced cytoplasmic incompatibility. | wolbachia are intracellular bacteria transmitted almost exclusively vertically through eggs. in response to this mode of transmission, wolbachia strategically manipulate their insect hosts' reproduction. in the most common manipulation type, cytoplasmic incompatibility, infected males can only mate with infected females, but infected females can mate with all males. the mechanism of cytoplasmic incompatibility is unknown; theoretical and empirical findings need to converge to broaden our underst ... | 2011 | 21572955 |
| assessing risks of wolbachia dna cross-specimen contamination following mass collection and ethanol storage. | wolbachia and other intracellular bacteria that manipulate reproduction are widespread and can have major consequences on the ecology and evolution of their hosts. several studies have attempted to assess the host range of these bacteria based on polymerase chain reaction assays on material preserved and collected using a variety of methods. while collecting in the field, mass storage in ethanol before sorting specimens in the laboratory is by far the easiest technique, and an integral component ... | 2009 | 21564565 |
| comparing de novo genome assembly: the long and short of it. | recent advances in dna sequencing technology and their focal role in genome wide association studies (gwas) have rekindled a growing interest in the whole-genome sequence assembly (wgsa) problem, thereby, inundating the field with a plethora of new formalizations, algorithms, heuristics and implementations. and yet, scant attention has been paid to comparative assessments of these assemblers' quality and accuracy. no commonly accepted and standardized method for comparison exists yet. even worse ... | 2011 | 21559467 |
| wolbachia-induced cytoplasmic incompatibility is associated with decreased hira expression in male drosophila. | wolbachia are obligate endosymbiotic bacteria that infect numerous species of arthropods and nematodes. wolbachia can induce several reproductive phenotypes in their insect hosts including feminization, male-killing, parthenogenesis and cytoplasmic incompatibility (ci). ci is the most common phenotype and occurs when wolbachia-infected males mate with uninfected females resulting in no or very low numbers of viable offspring. however, matings between males and females infected with the same stra ... | 2011 | 21559343 |
| wolbachia and the biological control of mosquito-borne disease. | mosquito-borne diseases such as malaria, dengue fever and filariasis cause an enormous health burden to people living in tropical and subtropical regions of the world. despite years of intense effort to control them, many of these diseases are increasing in prevalence, geographical distribution and severity, and options to control them are limited. the transinfection of mosquitos with the maternally inherited, endosymbiotic bacteria wolbachia is a promising new biocontrol approach. fruit fly wol ... | 2011 | 21546911 |
| strategies for introducing wolbachia to reduce transmission of mosquito-borne diseases. | certain strains of the endosymbiont wolbachia have the potential to lower the vectorial capacity of mosquito populations and assist in controlling a number of mosquito-borne diseases. an important consideration when introducing wolbachia-carrying mosquitoes into natural populations is the minimisation of any transient increase in disease risk or biting nuisance. this may be achieved by predominantly releasing male mosquitoes. to explore this, we use a sex-structured model of wolbachia-mosquito i ... | 2011 | 21541357 |
| the immune cellular effectors of terrestrial isopod armadillidium vulgare: meeting with their invaders, wolbachia. | most of crustacean immune responses are well described for the aquatic forms whereas almost nothing is known for the isopods that evolved a terrestrial lifestyle. the latter are also infected at a high prevalence with wolbachia, an endosymbiotic bacterium which affects the host immune system, possibly to improve its transmission. in contrast with insect models, the isopod armadillidium vulgare is known to harbor wolbachia inside the haemocytes. | 2011 | 21533137 |
| wolbachia wsinvictaa infections in natural populations of the fire ant solenopsis invicta: testing for phenotypic effects. | abstract wolbachia are intracellular bacteria that commonly infect many arthropods and some nematodes. in arthropods, these maternally transmitted bacteria often induce a variety of phenotypic effects to enhance their own spread within host populations. wolbachia phenotypic effects generally either provide benefits to infected host females (cytoplasmic incompatibility, positive fitness effects) or bias host sex ratio in favor of females (male-killing, parthenogenesis, feminization), all of which ... | 2011 | 21526927 |
| bacteria-induced sexual isolation in drosophila. | commensal bacteria can induce sexual isolation between populations of drosophila. this phenomenon has implications for speciation, and raises questions about its behavioral and developmental mechanisms, which are not yet known. in this extra view, we discuss related work by others, bearing directly on these issues, and we speculate about how bacteria might influence fly behavior. there are many reports of interaction between drosophila and their microbiota that significantly impacts mating prefe ... | 2011 | 21525789 |
| diversification of wolbachia endosymbiont in the culex pipiens mosquito. | the α-proteobacteria wolbachia are among the most common intracellular bacteria and have recently emerged as important drivers of arthropod biology. wolbachia commonly act as reproductive parasites in arthropods by inducing cytoplasmic incompatibility (ci), a type of conditional sterility between hosts harboring incompatible infections. in this study, we examined the evolutionary histories of wolbachia infections, known as wpip, in the common house mosquito culex pipiens, which exhibits the grea ... | 2011 | 21515811 |
| outsmarting dengue fever. | 2011 | 21495472 | |
| wolbachia detection: an assessment of standard pcr protocols. | wolbachia is a large monophyletic genus of intracellular bacteria, traditionally detected using pcr assays. its considerable phylogenetic diversity and impact on arthropods and nematodes make it urgent to assess the efficiency of these screening protocols. the sensitivity and range of commonly used pcr primers and of a new set of 16s primers were evaluated on a wide range of hosts and wolbachia strains. we show that certain primer sets are significantly more efficient than others but that no sin ... | 2011 | 21481216 |
| symbiont diversity and non-random hybridization among indigenous (ms) and invasive (b) biotypes of bemisia tabaci. | the whitefly bemisia tabaci (hemiptera: aleyrodidae) is a worldwide pest and a vector of numerous plant viruses. b. tabaci is composed of dozens of morphologically indistinguishable biotypes and its taxonomic status is still controversial. this phloem-feeder harbours the primary symbiont portiera aleyrodidarum and potentially six secondary symbionts: cardinium, arsenophonus, hamiltonella, rickettsia, wolbachia and fritschea. in the southwest indian ocean, la réunion hosts two biotypes of this sp ... | 2011 | 21476990 |
| population dynamic models of the spread of wolbachia. | wolbachia are endosymbionts that are found in many insect species and can spread rapidly when introduced into a naive host population. most wolbachia spread when their infection frequency exceeds a threshold normally calculated using purely population genetic models. however, spread may also depend on the population dynamics of the insect host. we develop models to explore interactions between host population dynamics and wolbachia infection frequency for an age-structured insect population regu ... | 2011 | 21460541 |
| comparisons of host mitochondrial, nuclear and endosymbiont bacterial genes reveal cryptic fig wasp species and the effects of wolbachia on host mtdna evolution and diversity. | figs and fig-pollinating wasp species usually display a highly specific one-to-one association. however, more and more studies have revealed that the "one-to-one" rule has been broken. co-pollinators have been reported, but we do not yet know how they evolve. they may evolve from insect speciation induced or facilitated by wolbachia which can manipulate host reproduction and induce reproductive isolation. in addition, wolbachia can affect host mitochondrial dna evolution, because of the linkage ... | 2011 | 21457543 |
| gene flow between sexual and asexual strains of parasitic wasps: a possible case of sympatric speciation caused by a parthenogenesis-inducing bacterium. | sympatric speciation is strictly defined as the emergence of two species from a population in which mating has been random with respect to the place of birth of the mating partners. mathematical models have shown that sympatric speciation is possible, but very few examples have been documented in nature. in this article, we demonstrate that arrhenotokous and thelytokous strains of a parasitic wasp, neochrysocharis formosa, speciated sympatrically through infection by a symbiotic bacterium ricket ... | 2011 | 21457171 |
| a secure semi-field system for the study of aedes aegypti. | new contained semi-field cages are being developed and used to test novel vector control strategies of dengue and malaria vectors. we herein describe a new quarantine insectary level-2 (qic-2) laboratory and field cages (james cook university mosquito research facility semi-field system; mrf sfs) that are being used to measure the impact of the endosymbiont wolbachia pipientis on populations of aedes aegypti in cairns australia. | 2011 | 21445333 |
| the diversity of insect-bacteria interactions and its applications for disease control. | prokaryotic microorganisms are widespread in all environments on earth, establishing diverse interactions with many eukaryotic taxa, including insects. these associations may be symbiotic, pathogenic and vectoring. independently of the type of interaction, each association starts with the adhesion of the microorganism to the host, entry and "invasion" of the host, then progresses to establishment and dissemination within the host, by avoiding host immune responses, and concludes with transmissio ... | 2008 | 21412357 |
| distribution and molecular characterization of wolbachia endosymbionts and filarial nematodes in maryland populations of the lone star tick (amblyomma americanum). | the lone star tick amblyomma americanum is host to a wide diversity of endosymbiotic bacteria. we identified a novel wolbachia symbiont infecting a. americanum. multilocus sequence typing phylogenetically placed the endosymbiont in the increasingly diverse f supergroup. we assayed a total of 1031 ticks (119 females, 78 males and 834 nymphs in 89 pools) from 16 maryland populations for infection. infection frequencies in the natural populations were approximately 5% in females and <2% (minimum in ... | 2011 | 21410491 |
| a preliminary survey for wolbachia and bacteriophage wo infections in indian mosquitoes (diptera: culicidae). | maternally inherited wolbachia endosymbiotic bacteria are known to induce various kinds of reproductive alterations in their arthropod hosts. it has been proposed that this bacterium can be used as a tool for gene drive system in mosquitoes and also for the reduction of population size and modulating population age structure in order to reduce disease transmission. in the present study, we carried out a survey to determine the prevalence of wolbachia and its phage wo infection in indian mosquito ... | 2010 | 21399578 |
| ccl17 controls mast cells for the defense against filarial larval entry. | filarial parasites have to trespass many barriers to successfully settle within their mammalian host, which is equipped with mechanical borders and complex weaponry of an evolved immune system. however, little is known about mechanisms of early local events in filarial infections. in this study, bone marrow-derived dendritic cells not only upregulated activation markers cd40 and cd80 upon in vitro stimulation with filarial extracts, but also secreted ccl17, a chemokine known to be produced upon ... | 2011 | 21398605 |
| wolbachia infections in anopheles gambiae cells: transcriptomic characterization of a novel host-symbiont interaction. | the endosymbiotic bacterium wolbachia is being investigated as a potential control agent in several important vector insect species. recent studies have shown that wolbachia can protect the insect host against a wide variety of pathogens, resulting in reduced transmission of parasites and viruses. it has been proposed that compromised vector competence of wolbachia-infected insects is due to up-regulation of the host innate immune system or metabolic competition. anopheles mosquitoes, which tran ... | 2011 | 21379333 |
| mitochondrial dna effects on fitness in drosophila subobscura. | we tested different fitness components on a series of conspecific mtdna haplotypes, detected by rflps in drosophila subobscura. additionally, haplotype viii, endemic to the canary islands, was tested upon its own native nuclear dna background and upon that of the rest of mtdnas tested herein. we found that both nuclear and mitochondrial dna can have a significant effect upon their hosts' fitness, and that negative selection is one of the mechanisms that can intervene in this species' mtdna haplo ... | 2011 | 21364694 |
| the wmelpop strain of wolbachia interferes with dopamine levels in aedes aegypti. | wolbachia is an intracellular bacterium that has been stably transinfected into the mosquito vector of dengue, aedes aegypti. this inherited infection causes a range of metabolic and phenotypic alterations in the mosquito, which might be related to neuronal abnormalities. in order to determine if these alterations were caused by the manipulation of neuroamines by this bacterium, we studied the expression of genes involved in the dopamine biosynthetic pathway and also measured the amount of dopam ... | 2011 | 21356077 |
| biological vector control of mosquito-borne diseases. | 2011 | 21351390 | |
| recombination in wolbachia endosymbionts of filarial nematodes? | 2011 | 21350051 | |
| differentially expressed genes in silkworm cell cultures in response to infection by wolbachia and cardinium endosymbionts. | wolbachia and cardinium are bacterial endosymbionts that are widely distributed amongst arthropods. both cause reproductive alterations, such as cytoplasmic incompatibility, parthenogenesis and feminization. here we studied differentially expressed genes in wolbachia- and cardinium-infected bm-aff3 silkworm cells using a silkworm microarray. wolbachia infection did not alter gene expression or induce or suppress immune responses. in contrast, cardinium infection induced many immune-related genes ... | 2011 | 21349119 |
| a wolbachia symbiont in aedes aegypti disrupts mosquito egg development to a greater extent when mosquitoes feed on nonhuman versus human blood. | a vertebrate bloodmeal is required by female mosquitoes of most species to obtain nutrients for egg maturation. the yellowfever mosquito, aedes aegypti (l.), feeds predominantly on humans, despite having the capacity to use blood from other hosts for this process. here, we report that female ae. aegypti infected with a virulent strain of the intracellular bacterium wolbachia pipientis (wmelpop) from drosophila melanogaster (meigen) have a reduced ability to use blood for egg development. blood f ... | 2011 | 21337952 |
| further insights into the strange role of bacterial endosymbionts in whitefly, bemisia tabaci: comparison of secondary symbionts from biotypes b and q in china. | the percentage infection of secondary symbionts (ss) (wolbachia, arsenophonus, rickettsia, hamiltonella, fritschea and cardinium) in the exotic bemisia tabaci (genn.) invaders, commonly known as biotypes b and q from china, were determined by pcr. in total, 373 biotype b and 1830 biotype q individuals were screened for the presence of ss. biotype b was more abundant than biotype q from 2005 to 2006, and biotype q was more abundant from 2007 to 2009. each of the ss, with the exception of fritsche ... | 2011 | 21329550 |
| diversity of endosymbionts in the potato psyllid, bactericera cockerelli (triozidae), vector of zebra chip disease of potato. | zebra chip disease is an emerging, serious disease of solanaceous crops and the causal agent is a bacterium "candidatus liberibacter solanacearum" (cls), also known as "candidatus liberibacter psyllaurous", which is transmitted by the potato psyllid, bactericera cockerelli (šulc). we performed bacterial tag-encoded flx amplicon pyrosequencing (btefap) of the 16s rdna genes to determine the bacterial microbiota in adult insects from cls-uninfected and cls-infected strains of b. cockerelli and pot ... | 2011 | 21327558 |
| identification and characterization of the cofactor-independent phosphoglycerate mutases of dirofilaria immitis and its wolbachia endosymbiont. | drug treatments for heartworm disease have not changed significantly in the last decade. due to concerns about possible drug resistance and their lower efficacy against adult worms, there is a need for the development of new antifilarial drug therapies. the recent availability of genomic sequences for the related filarial parasite brugia malayi and its wolbachia endosymbiont enables genome-wide searching for new drug targets. phosphoglycerate mutase (pgm) enzymes catalyze the critical isomerizat ... | 2011 | 21324604 |
| detection of rickettsia and a novel haemaphysalis shimoga symbiont bacterium in ticks in thailand. | in this study, we identified two haemaphysalis species present at the khao yai national park in thailand and investigated the presence of rickettsia in these ticks. a total of 166 haemaphysalis specimens were collected randomly under leaves along visitor paths at five locations in the park. male and female adults of two different haemaphysalis species, h. shimoga and h. lagrangei, were identified. polymerase chain reaction (pcr) analysis revealed rickettsia bacteria in these two haemaphysalis sp ... | 2011 | 21318277 |
| complete bacteriophage transfer in a bacterial endosymbiont (wolbachia) determined by targeted genome capture. | bacteriophage flux can cause the majority of genetic diversity in free-living bacteria. this tenet of bacterial genome evolution generally does not extend to obligate intracellular bacteria owing to their reduced contact with other microbes and a predominance of gene deletion over gene transfer. however, recent studies suggest intracellular coinfections in the same host can facilitate exchange of mobile elements between obligate intracellular bacteria-a means by which these bacteria can partiall ... | 2011 | 21292630 |
| transcriptomics of the bed bug (cimex lectularius). | bed bugs (cimex lectularius) are blood-feeding insects poised to become one of the major pests in households throughout the united states. resistance of c. lectularius to insecticides/pesticides is one factor thought to be involved in its sudden resurgence. despite its high-impact status, scant knowledge exists at the genomic level for c. lectularius. hence, we subjected the c. lectularius transcriptome to 454 pyrosequencing in order to identify potential genes involved in pesticide resistance. | 2011 | 21283830 |
| mechanisms promoting the long-term persistence of a wolbachia infection in a laboratory-adapted population of drosophila melanogaster. | intracellular bacteria of the genus wolbachia are widespread endosymbionts across diverse insect taxa. despite this prevalence, our understanding of how wolbachia persists within populations is not well understood. cytoplasmic incompatibility (ci) appears to be an important phenotype maintaining wolbachia in many insects, but it is believed to be too weak to maintain wolbachia in drosophila melanogaster, suggesting that wolbachia must also have other effects on this species. here we estimate the ... | 2011 | 21283625 |
| variable infection frequency and high diversity of multiple strains of wolbachia pipientis in perkinsiella planthoppers. | this survey of wolbachia infections in populations of the planthoppers perkinsiella saccharicida and perkinsiella vitiensis revealed variable frequencies, low-titer infections, and high phylogenetic diversities of strains. these observations add to the growing realization that wolbachia infections may be extremely common within invertebrates and yet occur infrequently within populations and at low titer within individuals. | 2011 | 21278277 |
| intraspecific specialization of the generalist parasitoid cotesia sesamiae revealed by polydnavirus polymorphism and associated with different wolbachia infection. | as a result of an intense host-parasite evolutionary arms race, parasitic wasps frequently display high levels of specialization on very few host species. for instance, in braconid wasps very few generalist species have been described. however, within this family, cotesia sesamiae is a generalist species that is widespread in sub-saharan africa and develops on several lepidopteran hosts. in this study, we tested the hypothesis that c. sesamiae may be a cryptic specialist when examined at the int ... | 2011 | 21255170 |
| bacterial diversity in solenopsis invicta and solenopsis geminata ant colonies characterized by 16s amplicon 454 pyrosequencing. | social insects harbor diverse assemblages of bacterial microbes, which may play a crucial role in the success or failure of biological invasions. the invasive fire ant solenopsis invicta (formicidae, hymenoptera) is a model system for understanding the dynamics of invasive social insects and their biological control. however, little is known about microbes as biotic factors influencing the success or failure of ant invasions. this pilot study is the first attempt to characterize and compare micr ... | 2011 | 21243351 |
| wolbachia come of age. | 1998 | 21238270 | |
| spiders do not escape reproductive manipulations by wolbachia. | maternally inherited bacteria that reside obligatorily or facultatively in arthropods can increase their prevalence in the population by altering their hosts' reproduction. such reproductive manipulations have been reported from the major arthropod groups such as insects (in particular hymenopterans, butterflies, dipterans and beetles), crustaceans (isopods) and mites. despite the observation that endosymbiont bacteria are frequently encountered in spiders and that the sex ratio of particular sp ... | 2011 | 21235755 |
| male killing and incomplete inheritance of a novel spiroplasma in the moth ostrinia zaguliaevi. | bacteria of the genus spiroplasma are widely found in plants and arthropods. some of the maternally transmitted spiroplasma endosymbionts in arthropods are known to kill young male hosts (male killing). here, we describe a new case of spiroplasma-induced male killing in a moth, ostrinia zaguliaevi. the all-female trait caused by spiroplasma was maternally inherited for more than 11 generations but was spontaneously lost in several lineages. antibiotic treatment eliminated the spiroplasma infecti ... | 2011 | 21234752 |
| current evidence on the use of antifilarial agents in the management of bancroftian filariasis. | many trials have explored the efficacy of individual drugs and drug combinations to treat bancroftian filariasis. this narrative review summarizes the current evidence for drug management of bancroftian filariasis. diethylcarbamazine (dec) remains the prime antifilarial agent with a well-established microfilaricidal and some macrofilaricidal effects. ivermectin (ivm) is highly microfilaricidal but minimally macrofilaricidal. the role of albendazole (alb) in treatment regimens is not well establi ... | 2010 | 21234244 |
| malaria vector control: from past to future. | malaria is one of the most common vector-borne diseases widespread in the tropical and subtropical regions. despite considerable success of malaria control programs in the past, malaria still continues as a major public health problem in several countries. vector control is an essential part for reducing malaria transmission and became less effective in recent years, due to many technical and administrative reasons, including poor or no adoption of alternative tools. of the different strategies ... | 2011 | 21229263 |
| assessing key safety concerns of a wolbachia-based strategy to control dengue transmission by aedes mosquitoes. | mosquito-borne diseases such as dengue fever, chikungunya or malaria affect millions of people each year and control solutions are urgently needed. an international research program is currently being developed that relies on the introduction of the bacterial endosymbiont wolbachia pipientis into aedes aegypti to control dengue transmission. in order to prepare for open-field testing releases of wolbachia-infected mosquitoes, an intensive social research and community engagement program was unde ... | 2010 | 21225190 |
| does a parthenogenesis-inducing wolbachia induce vestigial cytoplasmic incompatibility? | wolbachia is a maternally inherited bacterium that manipulates the reproduction of its host. recent studies have shown that male-killing strains can induce cytoplasmic incompatibility (ci) when introgressed into a resistant host. phylogenetic studies suggest that transitions between ci and other wolbachia phenotypes have also occurred frequently, raising the possibility that latent ci may be widespread among wolbachia. here, we investigate whether a parthenogenesis-inducing wolbachia strain can ... | 2011 | 21221516 |
| syto11 staining vs fish staining: a comparison of two methods to stain wolbachia pipientis in cell cultures. | the aedes albopictus c7-10 cell line was infected with wolbachia strains wri and walbb to create c7-10r and c7-10b cell lines, respectively. we compared two different methods, fluorescence in situ hybridization staining and syto11 staining, to describe these new wolbachia infections in c7-10. | 2011 | 21214605 |
| assessment of bacterial diversity in the cattle tick rhipicephalus (boophilus) microplus through tag-encoded pyrosequencing. | ticks are regarded as the most relevant vectors of disease-causing pathogens in domestic and wild animals. the cattle tick, rhipicephalus (boophilus) microplus, hinders livestock production in tropical and subtropical parts of the world where it is endemic. tick microbiomes remain largely unexplored. the objective of this study was to explore the r. microplus microbiome by applying the bacterial 16s tag-encoded flx-titanium amplicon pyrosequencing (btefap) technique to characterize its bacterial ... | 2011 | 21211038 |
| the tsetse fly glossina fuscipes fuscipes (diptera: glossina) harbours a surprising diversity of bacteria other than symbionts. | three different bacterial species are regularly described from tsetse flies. however, no broad screens have been performed to investigate the existence of other bacteria in this medically and agriculturally important vector insect. utilising both culture dependent and independent methods we show that kenyan populations of glossina fuscipes fuscipes harbour a surprising diversity of bacteria. bacteria were isolated from 72% of flies with 23 different bacterial species identified. the firmicutes p ... | 2011 | 21203841 |
| diversity and infection prevalence of endosymbionts in natural populations of the chestnut weevil: relevance of local climate and host plants. | many insects are ubiquitously associated with multiple endosymbionts, whose infection patterns often exhibit spatial and temporal variations. how such endosymbiont variations are relevant to local adaptation of the host organisms is of ecological interest. here, we report a comprehensive survey of endosymbionts in natural populations of the chestnut weevil curculio sikkimensis, whose larvae are notorious pests of cultivated chestnuts and also infest acorns of various wild oaks. from 968 insects ... | 2010 | 21199036 |
| effects of wolbachia on mtdna variation and evolution in natural populations of tetranychus urticae koch. | we investigated the effects of wolbachia infection on mtdna variation in spider mites by sequencing a portion of the mitochondrial cytochrome oxidase i (coi) gene from 198 individuals of known infection status. four wolbachia strains were described in the current study, namely wurtori1, wurtori2, wurtori3 and wurtcon1. as predicted, the haplotype and nucleotide diversity were lower in infected individuals than in uninfected individuals. however, these mtdna haplotype data are not entirely concor ... | 2011 | 21199022 |
| insertion sequence inversions mediated by ectopic recombination between terminal inverted repeats. | transposable elements are widely distributed and diverse in both eukaryotes and prokaryotes, as exemplified by dna transposons. as a result, they represent a considerable source of genomic variation, for example through ectopic (i.e. non-allelic homologous) recombination events between transposable element copies, resulting in genomic rearrangements. ectopic recombination may also take place between homologous sequences located within transposable element sequences. dna transposons are typically ... | 2010 | 21187977 |
| bacterial endosymbiont localization in hyalesthes obsoletus, the insect vector of bois noir in vitis vinifera. | one emerging disease of grapevine in europe is bois noir (bn), a phytoplasmosis caused by "candidatus phytoplasma solani" and spread in vineyards by the planthopper hyalesthes obsoletus (hemiptera: cixiidae). here we present the first full characterization of the bacterial community of this important disease vector collected from bn-contaminated areas in piedmont, italy. length heterogeneity pcr and denaturing gradient gel electrophoresis analysis targeting the 16s rrna gene revealed the presenc ... | 2010 | 21183640 |
| a worm's best friend: recruitment of neutrophils by wolbachia confounds eosinophil degranulation against the filarial nematode onchocerca ochengi. | onchocerca ochengi, a filarial parasite of cattle, represents the closest relative of the human pathogen, onchocerca volvulus. both species harbour wolbachia endosymbionts and are remarkable in that adult female worms remain viable but sessile for many years while surrounded by host cells and antibodies. the basis of the symbiosis between filariae and wolbachia is thought to be metabolic, although a role for wolbachia in immune evasion has received little attention. neutrophils are attracted to ... | 2010 | 21177682 |
| a simple and distinctive microbiota associated with honey bees and bumble bees. | specialized relationships with bacteria often allow animals to exploit a new diet by providing a novel set of metabolic capabilities. bees are a monophyletic group of hymenoptera that transitioned to a completely herbivorous diet from the carnivorous diet of their wasp ancestors. recent culture-independent studies suggest that a set of distinctive bacterial species inhabits the gut of the honey bee, apis mellifera. here we survey the gut microbiotae of diverse bee and wasp species to test whethe ... | 2010 | 21175905 |
| bacterial diversity of field-caught mosquitoes, aedes albopictus and aedes aegypti, from different geographic regions of madagascar. | symbiotic bacteria are known to play important roles in the biology of insects, but the current knowledge of bacterial communities associated with mosquitoes is very limited and consequently their contribution to host behaviors is mostly unknown. in this study, we explored the composition and diversity of mosquito-associated bacteria in relation with mosquitoes' habitats. wild aedes albopictus and aedes aegypti were collected in three different geographic regions of madagascar. culturing methods ... | 2010 | 21175696 |
| dispersal and survival of aedes albopictus (diptera: culicidae) males in italian urban areas and significance for sterile insect technique application. | the dispersal and survival of laboratory-reared aedes albopictus skuse males were investigated during the summer of 2007 in three northern italy urban localities by mark-release-recapture techniques. two marking methods were compared: one group of males was dusted with fluorescent pigments on the body (fp), and the other group was obtained from a strain whose natural infection of wolbachia had been removed (wb0). fp- and wb0-marked males were released as adults and pupae, respectively, in one fi ... | 2010 | 21175057 |
| shape change in viable eggs of the collembolan folsomia candida provides insight into the role of wolbachia endosymbionts. | the endosymbiotic bacteria of the genus wolbachia that infect the collembolan species folsomia candida are responsible for facilitating parthenogenetic reproduction in their hosts. this study made empirical observations of the development of eggs of f. candida which contained normal populations of wolbachia and of eggs which were cured of wolbachia by treatment with the antibiotic rifampicin. a marked increase in egg size accompanied by a significant change in shape from spherical to discoid occ ... | 2010 | 21174352 |
| wolbachia infection and mitochondrial diversity in the canine heartworm (dirofilaria immitis). | many species of filarial nematodes are infected with wolbachia pipientis, a maternally inherited endosymbiont. in addition to manipulating host reproduction, these bacteria also affect the evolution of the mitochondrial dna with which they are transmitted. selective sweeps can establish a single mitochondrial lineage within a wolbachia-infected population and purge genetic diversity. while this phenomenon has been studied in insect model systems, it has not been thoroughly examined in a filarial ... | 2010 | 21171866 |
| infectious speciation revisited: impact of symbiont-depletion on female fitness and mating behavior of drosophila paulistorum. | the neotropical drosophila paulistorum superspecies, consisting of at least six geographically overlapping but reproductively isolated semispecies, has been the object of extensive research since at least 1955, when it was initially trapped mid-evolution in flagrant statu nascendi. in this classic system females express strong premating isolation patterns against mates belonging to any other semispecies, and yet uncharacterized microbial reproductive tract symbionts were described triggering hyb ... | 2010 | 21151959 |
| infectious diseases. australia to test 'mosquito vaccine' against human disease. | 2010 | 21148356 | |
| understanding feline heartworm infection: disease, diagnosis, and treatment. | feline heartworm disease is a very different clinical entity from canine heartworm disease. in cats, the arrival and death of immature heartworms in the pulmonary arteries can cause coughing and dyspnea as early as 3 months postinfection. adult heartworms suppress the function of pulmonary intravascular macrophages and thus reduce clinical disease in chronic feline heartworm infection. approximately 80% of asymptomatic cats self-cure. median survival time for symptomatic cats is 1.5 years, or 4 ... | 2010 | 21147476 |
| dynamics of the "popcorn" wolbachia infection in outbred aedes aegypti informs prospects for mosquito vector control. | forty percent of the world's population is at risk of contracting dengue virus, which produces dengue fever with a potentially fatal hemorrhagic form. the wmelpop wolbachia infection of drosophila melanogaster reduces life span and interferes with viral transmission when introduced into the mosquito aedes aegypti, the primary vector of dengue virus. wolbachia has been proposed as an agent for preventing transmission of dengue virus. population invasion by wolbachia depends on levels of cytoplasm ... | 2010 | 21135075 |
| molecular approaches to identify cryptic species and polymorphic species within a complex community of fig wasps. | cryptic and polymorphic species can complicate traditional taxonomic research and both of these concerns are common in fig wasp communities. species identification is very difficult, despite great effort and the ecological importance of fig wasps. herein, we try to identify all chalcidoid wasp species hosted by one species of fig, using both morphological and molecular methods. we compare the efficiency of four different dna regions and find that its2 is highly effective for species identificati ... | 2010 | 21124735 |
| many compatible wolbachia strains coexist within natural populations of culex pipiens mosquito. | maternally inherited wolbachia often manipulate the reproduction of arthropods to promote their transmission. in most species, wolbachia exert a form of conditional sterility termed cytoplasmic incompatibility (ci), characterized by the death of embryos produced by the mating between individuals with incompatible wolbachia infections. from a theoretical perspective, no stable coexistence of incompatible wolbachia infections is expected within host populations and ci should induce the invasion of ... | 2010 | 21119702 |
| multiple wolbachia determinants control the evolution of cytoplasmic incompatibilities in culex pipiens mosquito populations. | wolbachia are maternally inherited endosymbionts that can invade arthropod populations through manipulation of their reproduction. in mosquitoes, wolbachia induce embryonic death, known as cytoplasmic incompatibility (ci), whenever infected males mate with females either uninfected or infected with an incompatible strain. although genetic determinants of ci are unknown, a functional model involving the so-called mod and resc factors has been proposed. natural populations of culex pipiens mosquit ... | 2010 | 21114563 |
| improved accuracy of the transcriptional profiling method of age grading in aedes aegypti mosquitoes under laboratory and semi-field cage conditions and in the presence of wolbachia infection. | transcriptional profiling is an effective method of predicting age in the mosquito aedes aegypti in the laboratory, however, its effectiveness is limited to younger mosquitoes. to address this we used a microarray to identify new gene candidates that show significant expression changes in older mosquitoes. these genes were then used to create a revised model, which upon evaluation in both laboratory and semi-field conditions, proved to have improved accuracy overall and for older mosquitoes. in ... | 2010 | 21114562 |
| infection with the wmel and wmelpop strains of wolbachia leads to higher levels of melanization in the hemolymph of drosophila melanogaster, drosophila simulans and aedes aegypti. | introduction of the life-shortening strain of wolbachia pipientis, wmelpop, into the key dengue vector, aedes aegypti, and the anti-pathogen effects in wolbachia-infected hosts highlights the need for more research into its interactions with its original host, drosophila melanogaster, and the novel mosquito host. the visual difference in darkness between the eggs of wmelpop wolbachia-infected and uninfected mosquito hosts after egg deposition led to further investigation into melanization levels ... | 2010 | 21075139 |
| touchdown-touchup nested pcr for low-copy gene detection of benzimidazole-susceptible wuchereria bancrofti with a wolbachia endosymbiont imported by migrant carriers. | a novel, sensitive and specific touchdown-touchup nested pcr (tnpcr) technique based on two useful molecular markers, a wuchereria bancrofti β-tubulin gene involved in benzimidazole susceptibility and a wolbachia ftsz gene involved in cell division, was developed to simultaneously detect the parasite w. bancrofti (w1) with its wolbachia endosymbiont (w2) from both microfilaremic and post-treatment samples of at-risk migrant carriers infected with geographical w. bancrofti isolates. the detection ... | 2010 | 21074526 |
| a single dose of doxycycline in combination with diethylcarbamazine for treatment of bancroftian filariasis. | standard treatment of lymphatic filariasis with diethylcarbamazine (dec) is associated with systemic adverse reactions, thought to be due to the release of microfilariae material and wolbachia endosymbiotic bacteria into the blood. combination treatments with doxycycline for 3-8 weeks are more effective than standard treatment. however, long-term use of antibiotics may contribute to drug resistance and are not practical for use in remote areas. we assessed whether a single dose of doxycycline co ... | 2010 | 21073054 |
| a comparative study on the functional response of wolbachia-infected and uninfected forms of the parasitoid wasp trichogramma brassicae. | trichogramma species (hymenoptera: trichogrammatidae) are haplo-diploid egg parasitoids that are frequently used as biological control agents against lepidopteran pests. these wasps display two reproductive modes, including arrhenotoky (bisexuality) and thelytoky (unisexuality). thelytokous forms are often associated with the presence of endosymbiotic wolbachia bacteria. the use of thelytokous wasps has long been considered as a way to enhance the efficacy of biological control. the present stud ... | 2010 | 21062211 |
| prevalence of wolbachia supergroups a and b in bemisia tabaci (hemiptera: aleyrodidae) and some of its natural enemies. | wolbachia, a bacterial symbiont, is maternally transmitted in arthropods and nematodes. we report a systematic survey of wolbachia taxonomy in the sweetpotato whitefly, bemisia tabaci (gennadius) (hemiptera: aleyrodidae), and in some of its natural enemies. for the first time, wolbachia infections in b. tabaci are correlated with various whitefly genetic groups, host plants, and natural enemies as well as with geographical regions. polymerase chain reaction using 16s rdna and fisz genes revealed ... | 2010 | 21061989 |
| mito-nuclear genetic comparison in a wolbachia infected weevil: insights on reproductive mode, infection age and evolutionary forces shaping genetic variation. | maternally inherited endosymbionts like wolbachia pipientis are in linkage disequilibrium with the mtdna of their hosts. therefore, they can induce selective sweeps, decreasing genetic diversity over many generations. this sex ratio distorter, that is involved in the origin of parthenogenesis and other reproductive alterations, infects the parthenogenetic weevil naupactus cervinus, a serious pest of ornamental and fruit plants. | 2010 | 21050430 |