Results 41 to 50 of about 4,367 (180)

Occurrence of arrhenotoky and thelytoky in a parasitic wasp Venturia canescens (Hymenoptera: Ichneumonidae): Effect of endosymbionts or existence of two distinct reproductive modes?

European Journal of Entomology, 2013
Endosymbiotic organisms are known to manipulate the reproductive biology of their hosts. Incomplete prevalence of endosymbiont inducing thelytokous parthenogenesis results in the coexistence of sexual and asexual individuals, and could account for the ...
Vincent FORAY, HENRI Hélène, Sonia MARTINEZ, Patricia GIBERT, Emmanuel DESOUHANT   +4 more
doaj   +1 more source

A Single Gene Causes Thelytokous Parthenogenesis, the Defining Feature of the Cape Honeybee Apis mellifera capensis [PDF]

Current Biology, 2020
In honeybees, the ability of workers to produce daughters asexually, i.e., thelytokous parthenogenesis, is restricted to a single subspecies inhabiting the Cape region of South Africa, Apis mellifera capensis. Thelytoky has unleashed new selective pressures and the evolution of traits such as social parasitism, invasiveness, and social cancer ...
Boris, Yagound, Kathleen A, Dogantzis, Amro, Zayed, Julianne, Lim, Paul, Broekhuyse, Emily J, Remnant, Madeleine, Beekman, Michael H, Allsopp, Sarah E, Aamidor, Orly, Dim, Gabriele, Buchmann, Benjamin P, Oldroyd   +11 more
openaire   +2 more sources

Comparison of bacterial diversity and abundance between sexes of Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) from China [PDF]

PeerJ, 2020
Background Insects harbor a myriad of microorganisms, many of which can affect the sex ratio and manipulate the reproduction of the host. Leptocybe invasa is an invasive pest that causes serious damage to eucalyptus plantations, and the thelytokous ...
Chunhui Guo, Xin Peng, Xialin Zheng, Xiaoyun Wang, Ruirui Wang, Zongyou Huang, Zhende Yang   +6 more
doaj   +2 more sources

Does Wolbachia infection affect Trichogramma atopovirilia behaviour? [PDF]

, 2010
Unisexual Trichogramma forms have attracted much attention due to their potential advantages as biocontrol agents. Fitness studies have been performed and understanding the cost that Wolbachia may inflict on their hosts will help in deciding if Wolbachia
Stouthamer, R., Almeida, R.P., de, Lenteren, J.C., van   +2 more
core   +1 more source

Fertile diploid males in the ant Cataglyphis cursor: a potential cost of thelytoky? [PDF]

, 2013
Under the hymenopteran single-locus complementary sex-determination system, production of diploid males results from homozygosity at the sex-determiner locus. This arises when both parents transmit identical alleles at the locus to the offspring.
Clémencet, Johanna, Fédérici, Pierre, Doums, Claudie, Aron, Serge, Cournault, Laurent, Cornault, Laurent, Ruel, Camille   +6 more
core   +1 more source

Longevity, fertility, and average eggs viability of parthenogenetic females of Cladomorphus phyllinus Gray (Phasmatodea - Phasmatidae)

EntomoBrasilis, 2022
The order Phasmatodea includes insects known as stick insects. In Brazil, few taxonomic, ecological or evolutionary studies have been published in recent years, the reason is related to the few number of researchers dedicated to this particular group ...
Lucas da Silva Torres, Hugo Alejandro Benítez, Jane Costa   +2 more
doaj   +1 more source

Coevolution and Functional Effects of Endosymbiotic <i>Rickettsia</i> in <i>Leptocybe invasa</i> Fisher & LaSalle (Hymenoptera: Eulophidae) Across China. [PDF]

Ecol Evol
Two distinct lineages of L. invasa and the dominant endosymbiont, Rickettsia, was identified, followed by an analysis of its infection density across various developmental stages and tissues of L. invasa. Furthermore, two distinct strains of the Rickettsia endosymbiont were detected, and the phylogenetic relationships between these strains and their L.
Xu X, Zhou L, Xie J, Li J, Guo C, Yang Z.   +5 more
europepmc   +2 more sources

Reproduction in the spider mite Oligonychus yothersi (Acari: Tetranychidae) [PDF]

Anais da Academia Brasileira de Ciências
In this work we reported injuries caused by the spider mite Oligonychus yothersi on Vitis vinifera leaves and we also investigate the sex ratio of this species under laboratory conditions. To access the aspects regarding reproduction, females were placed
JÚLIA J. FERLA, JULIANA GRANICH, NOELI J. FERLA   +2 more
doaj   +1 more source

Facultative use of thelytokous parthenogenesis for queen production in the polyandrous ant Cataglyphis cursor [PDF]

Journal of Evolutionary Biology, 2013
AbstractThe evolutionary paradox of sex remains one of the major debates in evolutionary biology. The study of species capable of both sexual and asexual reproduction can elucidate factors important in the evolution of sex. One such species is the ant Cataglyphis cursor, where the queen maximizes the transmission of her genes by producing new queens ...
Doums, Claudie, Cronin, Adam, Ruel, Camille, Fédérici, Pierre, Haussy, Claudy, Tirard, Claire, Monnin, Thibaud   +6 more
openaire   +4 more sources

Viable Triploid Honey Bees (Apis mellifera capensis) Are Reliably Produced in the Progeny of CO2 Narcotised Queens

G3: Genes, Genomes, Genetics, 2018
The haplodiploid system of sex determination of Hymenoptera acts as an exaptation for species to evolve novel forms of asexual reproduction including thelytoky (clonal offspring of the mother). During normal reproduction in Hymenoptera, three of the four
Benjamin P. Oldroyd, Sarah E. Aamidor, Gabriele Buchmann, Michael H. Allsopp, Emily J. Remnant, Fan F. Kao, Rebecca J. Reid, Madeleine Beekman   +7 more
doaj   +1 more source