The effects of outbreeding on a parasitoid wasp fixed for infection with a parthenogenesis-inducing Wolbachia symbiont.


:Trichogramma wasps can be rendered asexual by infection with the maternally inherited symbiont Wolbachia. Previous studies indicate the Wolbachia strains infecting Trichogramma wasps are host-specific, inferred by failed horizontal transfer of Wolbachia to novel Trichogramma hosts. Additionally, Trichogramma can become dependent upon their Wolbachia infection for the production of female offspring, leaving them irreversibly asexual, further linking host and symbiont. We hypothesized Wolbachia strains infecting irreversibly asexual, resistant to horizontal transfer Trichogramma would show adaptation to a particular host genetic background. To test this, we mated Wolbachia-dependent females with males from a Wolbachia-naïve population to create heterozygous wasps. We measured sex ratios and fecundity, a proxy for Wolbachia fitness, produced by heterozygous wasps, and by their recombinant offspring. We find a heterozygote advantage, resulting in higher fitness for Wolbachia, as wasps will produce more offspring without any reduction in the proportion of females. While recombinant wasps did not differ in total fecundity after 10 days, recombinants produced fewer offspring early on, leading to an increased female-biased sex ratio for the whole brood. Despite the previously identified barriers to horizontal transfer of Wolbachia to and from Trichogramma pretiosum, there were no apparent barriers for Wolbachia to induce parthenogenesis in these non-native backgrounds. This is likely due to the route of infection being introgression rather than horizontal transfer, and possibly the co-evolution of Wolbachia with the mitochondria rather than the nuclear genome. These results help to elucidate the mechanisms by which Wolbachia adapt to hosts and the evolution of host-symbiont phenotypes.


Heredity (Edinb)




Lindsey ARI,Stouthamer R




Has Abstract


2017-12-01 00:00:00
















  • Genetic relationships within the genus Beta determined using both PCR-based marker and DNA sequencing techniques.

    abstract::The sequences of ITS1 of the internal transcribed spacer regions of nuclear ribosomal DNA from 11 species or subspecies in four sections of the genus Beta were compared. Phylogeny of these wild beet taxa was inferred from the sequence data using phenetic and phylogenetic analyses. Multiple accessions from the same 11 ...


    pub_type: 杂志文章


    authors: Shen Y,Ford-Lloyd BV,Newbury HJ

    更新日期:1998-05-01 00:00:00

  • Increased recombination frequencies resulting from directional selection for geotaxis in Drosophila.

    abstract::Several classes of models have been suggested to explain how natural selection can favour non-zero recombination. Directional and fluctuating selection, abiotic and biotic, and selection against harmful mutations seem to be the most plausible factors, but little has been done to test the problem experimentally. Here w...


    pub_type: 杂志文章


    authors: Korol AB,Iliadi KG

    更新日期:1994-01-01 00:00:00

  • Using mitochondrial DNA to test the hypothesis of a European post-glacial human recolonization from the Franco-Cantabrian refuge.

    abstract::It has been proposed that the distribution patterns and coalescence ages found in Europeans for mitochondrial DNA (mtDNA) haplogroups V, H1 and H3 are the result of a post-glacial expansion from a Franco-Cantabrian refuge that recolonized central and northern areas. In contrast, in this refined mtDNA study of the Cant...


    pub_type: 杂志文章


    authors: García O,Fregel R,Larruga JM,Álvarez V,Yurrebaso I,Cabrera VM,González AM

    更新日期:2011-01-01 00:00:00

  • Sex ratio theory in geographically structured populations.

    abstract::Equilibrium sex ratios have been determined analytically under Wright's island model in order to determine the effect of population structure with limited dispersal. When mating occurs before dispersal, the dispersal rate has little or no effect, and the equilibrium sex ratio remains the same as under complete dispers...


    pub_type: 杂志文章


    authors: Bulmer MG

    更新日期:1986-02-01 00:00:00

  • The fixation of chromosomal rearrangements in a subdivided population with local extinction and colonization.

    abstract::The fixation of major chromosomal rearrangements with a heterozygote disadvantage is modelled as a simple example of Wright's shifting balance process of evolution in a strongly subdivided population. Chromosomal mutations with an inferior heterozygote become fixed in a local population (or deme) by random genetic dri...


    pub_type: 杂志文章


    authors: Lande R

    更新日期:1985-06-01 00:00:00

  • Molecular characterisation of sweet cherry (Prunus avium L.) genotypes using peach [Prunus persica (L.) Batsch] SSR sequences.

    abstract::A total of 76 sweet cherry genotypes were screened with 34 microsatellite primer pairs previously developed in peach. Amplification of SSR loci was obtained for 24 of the microsatellite primer pairs, and 14 of them produced polymorphic amplification patterns. On the basis of polymorphism and quality of amplification, ...


    pub_type: 杂志文章


    authors: Wünsch A,Hormaza JI

    更新日期:2002-07-01 00:00:00

  • Sex-specific clines support incipient speciation in a common European mammal.

    abstract::Hybrid zones provide excellent opportunities to study processes and mechanisms underlying reproductive isolation and speciation. Here we investigated sex-specific clines of molecular markers in hybrid zones of morphologically cryptic yet genetically highly-diverged evolutionary lineages of the European common vole (Mi...


    pub_type: 杂志文章


    authors: Sutter A,Beysard M,Heckel G

    更新日期:2013-04-01 00:00:00

  • Insights into the genetic architecture of morphological traits in two passerine bird species.

    abstract::Knowledge about the underlying genetic architecture of phenotypic traits is needed to understand and predict evolutionary dynamics. The number of causal loci, magnitude of the effects and location in the genome are, however, still largely unknown. Here, we use genome-wide single-nucleotide polymorphism (SNP) data from...


    pub_type: 杂志文章


    authors: Silva CNS,McFarlane SE,Hagen IJ,Rönnegård L,Billing AM,Kvalnes T,Kemppainen P,Rønning B,Ringsby TH,Sæther BE,Qvarnström A,Ellegren H,Jensen H,Husby A

    更新日期:2017-09-01 00:00:00

  • Models of parent-offspring conflict: effect of environmental variance.

    abstract::"Parent-offspring conflict" is a theoretical concept proposing that siblings are selected to be slightly more greedy with each other than parents are selected to tolerate. This paper extends a class of previous models of parent-offspring conflict by introducing a new and more realistic dimension to the analysis: the a...


    pub_type: 杂志文章


    authors: Bull JJ

    更新日期:1985-08-01 00:00:00

  • Evidence for contrasting modes of selection at interacting globin genes in the European rabbit (Oryctolagus cuniculus).

    abstract::In hybrid zones between genetically differentiated populations, variation in locus-specific rates of introgression may reflect adaptation to different environments or adaptation to different genetic backgrounds. The European rabbit, Oryctolagus cuniculus, is well-suited to studies of such hybrid zone dynamics because ...


    pub_type: 杂志文章


    authors: Campos R,Storz JF,Ferrand N

    更新日期:2008-06-01 00:00:00

  • Additional evidence for the genomic imprinting model of sex determination in the haplodiploid wasp Nasonia vitripennis: isolation of biparental diploid males after X-ray mutagenesis.

    abstract::The primary sex-determining signal in the haplodiploid wasp Nasonia vitripennis is not known. In haplodiploid reproduction, unfertilized eggs typically develop into uniparental haploid males and fertilized eggs into biparental diploid females. Although this reproductive strategy is common to all Hymenoptera, sex-deter...


    pub_type: 杂志文章


    authors: Trent C,Crosby C,Eavey J

    更新日期:2006-05-01 00:00:00

  • Genetic differentiation of the malaria vector Anopheles gambiae across Nigeria suggests that selection limits gene flow.

    abstract::Gene flow was investigated in Anopheles gambiae from eight localities that span the ecological zones of Nigeria (arid savanna zones in the north gradually turn into humid forest zones in the south). Genetic differentiation was measured over 10 microsatellite loci and, to determine any effects of selection, five loci w...


    pub_type: 杂志文章


    authors: Onyabe DY,Conn JE

    更新日期:2001-12-01 00:00:00

  • Making a long story short: noncoding RNAs and chromosome change.

    abstract::As important as the events that influence selection for specific chromosome types in the derivation of novel karyotypes, are the events that initiate the changes in chromosome number and structure between species, and likewise polymorphisms, variants and disease states within species. Although once thought of as trans...


    pub_type: 杂志文章,评审


    authors: Brown JD,Mitchell SE,O'Neill RJ

    更新日期:2012-01-01 00:00:00

  • Annual cycles in the incidence of b chromosomes in the grasshopper Myrmeleotettix maculatus (acrididae: orthoptera).

    abstract::The frequency of B chromosomes has been determined for several stages in the grasshopper life-cycle, over three generations, in three natural populations spanning a steep cline in East Anglia. This has revealed a rise in B frequency in prediapause eggs, a fall during the winter in the embryos and a rise in the early n...


    pub_type: 杂志文章


    authors: Robinson PM,Hewitt GM

    更新日期:1976-06-01 00:00:00

  • Parentage and relatedness reconstruction in Pinus sylvestris using genotyping-by-sequencing.

    abstract::Estimating kinship is fundamental for studies of evolution, conservation, and breeding. Genotyping-by-sequencing (GBS) and other restriction based genotyping methods have become widely applied in these applications in non-model organisms. However, sequencing errors, depth, and reproducibility between library preps cou...


    pub_type: 杂志文章


    authors: Hall D,Zhao W,Wennström U,Andersson Gull B,Wang XR

    更新日期:2020-05-01 00:00:00

  • Targeted conservation genetics of the endangered chimpanzee.

    abstract::Populations of the common chimpanzee (Pan troglodytes) are in an impending risk of going extinct in the wild as a consequence of damaging anthropogenic impact on their natural habitat and illegal pet and bushmeat trade. Conservation management programmes for the chimpanzee have been established outside their natural r...


    pub_type: 杂志文章


    authors: Frandsen P,Fontsere C,Nielsen SV,Hanghøj K,Castejon-Fernandez N,Lizano E,Hughes D,Hernandez-Rodriguez J,Korneliussen TS,Carlsen F,Siegismund HR,Mailund T,Marques-Bonet T,Hvilsom C

    更新日期:2020-08-01 00:00:00

  • Effects of seed bank disturbance on the fine-scale genetic structure of populations of the rare shrub Grevillea macleayana.

    abstract::Dispersal in most plants is mediated by the movement of seeds and pollen, which move genes across the landscape differently. Grevillea macleayana is a rare, fire-dependent Australian shrub with large seeds lacking adaptations for dispersal; yet it produces inflorescences adapted to pollination by highly mobile vertebr...


    pub_type: 杂志文章


    authors: England PR,Whelan RJ,Ayre DJ

    更新日期:2003-11-01 00:00:00

  • Comparison of population genetic structures of common wild rice (Oryza rufipogon Griff.), as revealed by analyses of quantitative traits, allozymes, and RFLPs.

    abstract::We investigated genetic diversity among and within natural populations of Asian common wild rice, Oryza rufipogon, from three different classes of data: quantitative traits, allozymes, and restriction fragment length polymorphisms (RFLPs). The seven populations examined showed polymorphism to varying degrees. The amou...


    pub_type: 杂志文章


    authors: Cai HW,Wang XK,Morishima H

    更新日期:2004-05-01 00:00:00

  • Quantitative analysis of genetic differentiation among European and Chilean strains of Drosophila subobscura.

    abstract::An analysis of the interpopulational differences observed between four European and four Chilean stocks of Drosophila subobscura, with regard to wing size, egg-to-adult development time and preadult viability, shows highly significant differences between the eight stocks irrespective of the continent from which the fl...


    pub_type: 杂志文章


    authors: Budnik M,Cifuentes L,Brncic D

    更新日期:1991-08-01 00:00:00

  • Lost in the zygote: the dilution of paternal mtDNA upon fertilization.

    abstract::The mechanisms by which paternal inheritance of mitochondrial DNA (mtDNA) (paternal leakage) and, subsequently, recombination of mtDNA are prevented vary in a species-specific manner with one mechanism in common: paternally derived mtDNA is assumed to be vastly outnumbered by maternal mtDNA in the zygote. To date, thi...


    pub_type: 杂志文章


    authors: Wolff JN,Gemmell NJ

    更新日期:2008-11-01 00:00:00

  • Gene flow between arrhenotokous and thelytokous populations of Venturia canescens (Hymenoptera).

    abstract::In the solitary parasitoid wasp Venturia canescens both arrhenotokously (sexual) and thelytokously (parthenogenetical) reproducing individuals occur sympatrically. We found in the laboratory that thelytokous wasps are able to mate, receive and use sperm of arrhenotokous males. Using nuclear (amplified fragment length ...


    pub_type: 杂志文章


    authors: Schneider MV,Driessen G,Beukeboom LW,Boll R,van Eunen K,Selzner A,Talsma J,Lapchin L

    更新日期:2003-03-01 00:00:00

  • Inversion polymorphisms in Trimerotropis pallidipennis (Orthoptera): clinical variation along an altitudinal gradient.

    abstract::Six populations of Trimerotropis pallidipennis located along an altitudinal gradient in the Antinaco-Los Colorados valley (La Rioja, Argentina), were cytologically analysed. The male karyotype consists of 23 chromosomes (22 + XO) with three long pairs submetacentric, the X-chromosome metacentric and the remaining ones...


    pub_type: 杂志文章


    authors: Confalonieri VA,Colombo PC

    更新日期:1989-02-01 00:00:00

  • Genetic diversity and reproductive biology in ecotypes of the facultative apomict Hypericum perforatum L.

    abstract::Apomixis is a mode of asexual reproduction through seed. Progeny produced by apomixis are clonal replicas of a mother plant. The essential feature of apomixis is that embryo sacs and embryos are produced in ovules without meiotic reduction or egg cell fertilisation. Thus, apomixis fixes successful gene combinations an...


    pub_type: 杂志文章


    authors: Barcaccia G,Arzenton F,Sharbel TF,Varotto S,Parrini P,Lucchin M

    更新日期:2006-04-01 00:00:00

  • Collective effects of common SNPs and risk prediction in lung cancer.

    abstract::Lung cancer is the leading cause of cancer deaths in both men and women in the US. While most sporadic lung cancer cases are related to environmental factors such as smoking, genetic susceptibility may also play an important role and a number of lung cancer associated single-nucleotide polymorphisms (SNPs) have been i...


    pub_type: 杂志文章


    authors: Lei X,Yuan D,Zhu Z,Huang S

    更新日期:2018-12-01 00:00:00

  • Androgenesis: a review through the study of the selfish shellfish Corbicula spp.

    abstract::Among the asexual reproductive modes, androgenesis is probably one of the most astonishing and least studied mechanisms. In this 'paternal monopolization', the maternal nuclear genome fails to participate in zygote development and offspring are paternal nuclear clones. Obligate androgenesis is known in only a few orga...


    pub_type: 杂志文章,评审


    authors: Pigneur LM,Hedtke SM,Etoundi E,Van Doninck K

    更新日期:2012-06-01 00:00:00

  • Colonization of Ireland: revisiting 'the pygmy shrew syndrome' using mitochondrial, Y chromosomal and microsatellite markers.

    abstract::There is great uncertainty about how Ireland attained its current fauna and flora. Long-distance human-mediated colonization from southwestern Europe has been seen as a possible way that Ireland obtained many of its species; however, Britain has (surprisingly) been neglected as a source area for Ireland. The pygmy shr...


    pub_type: 杂志文章


    authors: McDevitt AD,Vega R,Rambau RV,Yannic G,Herman JS,Hayden TJ,Searle JB

    更新日期:2011-12-01 00:00:00

  • Reduction in the cumulative effect of stress-induced inbreeding depression due to intragenerational purging in Drosophila melanogaster.

    abstract::Environmental stress generally exacerbates the harmful effects of inbreeding and it has been proposed that this could be exploited in purging deleterious alleles from threatened inbred populations. However, understanding what factors contribute to variability in the strength of inbreeding depression (ID) observed acro...


    pub_type: 杂志文章


    authors: Enders LS,Nunney L

    更新日期:2016-03-01 00:00:00

  • Low biochemical variability in European fallow deer (Dama dama L.): natural bottlenecks and the effects of domestication.

    abstract::Tissue and blood samples from 180 fallow deer (Dama dama L.) belonging to an Italian free-ranging population were studied for biochemical variability by means of cellulose acetate and polyacrylamide gel electrophoresis. The 51 putative genetic loci successfully resolved showed a very low level of variability (P = 0.02...


    pub_type: 杂志文章


    authors: Randi E,Apollonio M

    更新日期:1988-12-01 00:00:00

  • The maintenance of hybrid zones across a disturbance gradient.

    abstract::The parapatric distribution of genetically divergent lineages in hybrid zones can be maintained by ecological differences (dispersal-independent 'ecotonal' hybrid zones), by frequency- and density-dependent interference when they intermingle and mate (dispersal-dependent 'tension' hybrid zones), or by both processes a...


    pub_type: 杂志文章


    authors: Dorken ME,Pannell JR

    更新日期:2007-07-01 00:00:00

  • Postcopulatory, prezygotic isolation: intraspecific and interspecific sperm precedence in Tribolium spp., flour beetles.

    abstract::We investigated intraspecific and interspecific patterns of paternity in Tribolium castaneum, the flour beetle, by mating females either to pairs of conspecific males or to one conspecific and one heterospecific male of the closely related species, T. freemani. Females of both species store sperm in the spermatheca af...


    pub_type: 杂志文章


    authors: Robinson T,Johnson NA,Wade MJ

    更新日期:1994-08-01 00:00:00