Results 51 to 60 of about 758 (171)

Automictic parthenogenesis in the parasitoid Venturia canescens (Hymenoptera: Ichneumonidae) revisited [PDF]

, 2000
Both arrhenotokous and thelytokous reproduction are known to occur in the parasitoid wasp Venturia canescens. The cytological mechanism of thelytoky was previously reported to involve the formation of a restitution metaphase after the reduction division,
Pijnacker, Laas P., Leo W Beukeboom, Beukeboom, Leo W., Laas P Pijnacker   +3 more
core   +1 more source

Evolution of reproductive mode variation and host associations in a sexual-asexual complex of aphid parasitoids

BMC Evolutionary Biology, 2011
Background The Lysiphlebus fabarum group is a taxonomically poorly resolved complex of aphid parasitoids, presently split into three described species that comprise sexual (arrhenotokous) and asexual (thelytokous) lineages of unknown relationship ...
Sandrock Christoph, Schirrmeister Bettina E, Vorburger Christoph   +2 more
doaj   +1 more source

No evidence of parthenogenesis-inducing bacteria involved in Thripoctenus javae thelytoky: an unusual finding in Chalcidoidea

, 2016
All Hymenoptera have a haplodiploid mode of sex determination. Although most species reproduce by arrhenotokous parthenogenesis, there are many thelytokous species, in which unfertilized eggs develop into diploid females.
Gebiola M, Gualtieri L, Nugnes F, Monti MM, Bernardo U   +4 more
core   +1 more source

Wolbachia Infection in Populations of Ostrinia furnacalis: Diversity, Prevalence, Phylogeny and Evidence for Horizontal Transmission

Journal of Integrative Agriculture, 2013
Wolbachia are maternally inherited endosymbiotic bacteria infecting a wide range of arthropods and filarial nematodes. They can induce various reproduction alterations in their hosts, including thelytokous parthenogenesis, cytoplasmic incompatibility (CI)
Jing LI, Zhen-ying WANG, Denis Bourguet, Kang-lai HE   +3 more
doaj   +1 more source

A Set of Novel Venom Proteins Enables Parasitoid Wasps to Exploit Older Hosts and Coexist with Competitors

Advanced Science, Volume 13, Issue 4, 19 January 2026.
This study elucidates a molecular mechanism enabling species coexistence between parasitoid wasps, showing how Asobara japonica uses a set of novel venom proteins to delay host development and exploit older hosts, thereby achieving temporal niche partitioning with Leptopilina drosophilae. Abstract Interspecific competition can drive species coexistence
Junwei Zhang, Zhi Dong, Yifeng Sheng, Jieyu Shan, Ting Feng, Wenqi Shi, Zixuan Xu, Zeying Wang, Qichao Zhang, Ying Wang, Jianhua Huang, Jiani Chen   +11 more
wiley   +1 more source

Susceptibility to cyflumetofen in populations of the citrus leprosis mite, Brevipalpus yothersi, from Brazilian citrus orchards

Pest Management Science, Volume 82, Issue 1, Page 1046-1056, January 2026.
Brevipalpus yothersi, the vector of citrus leprosis virus, showed high susceptibility to cyflumetofen. Its low resistance suggests it is effective, but should be rotated with other acaricides with different modes‐of‐action for sustainable management.
Hector Alonso Escobar‐Garcia, Daniel Júnior de Andrade   +1 more
wiley   +1 more source

Reproduction of Earthworms: Sexual Selection and Parthenogenesis

, 2011
Earthworms are generally cross-fertilization hermaphrodites, but up to 40% of the species can be parthenogenetic. In simultaneous hermaphrodites, a trade-off between male and female sexual functions is expected because the two sexes share limited ...
Rosa Fernández, Díaz Cosín, Darío, Novo Rodríguez, Marta   +2 more
core   +1 more source

Genetic Diversity of the Invasive Gall Wasp Leptocybe invasa (Hymenoptera: Eulophidae) and of its Rickettsia Endosymbiont, and Associated Sex-Ratio Differences.

PLoS ONE, 2015
The blue-gum chalcid Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae) is a gall wasp pest of Eucalyptus species, likely native to Australia. Over the past 15 years it has invaded 39 countries on all continents where eucalypts are grown.
Francesco Nugnes, Marco Gebiola, Maurilia Maria Monti, Liberata Gualtieri, Massimo Giorgini, Jianguo Wang, Umberto Bernardo   +6 more
doaj   +1 more source

Paving the Way for Rearing Closterocerus coffeellae: Effect of Adult Food Source and Oviposition Behavior in Leucoptera coffeella

Entomologia Experimentalis et Applicata, Volume 173, Issue 11, Page 1226-1235, November 2025.
This study evaluated food sources for adult Closterocerus coffeellae survival and oviposition behavior. Adults were fed honey (10%), Hibiscus nectar, an artificial diet, or received no food. Male survival was higher on the artificial diet, whereas honey (10%) increased female survival.
Mateus P. dos Santos, Ronilson S. Sales, Elisangela L. Bertoldo, Júlio C. G. Silva, Raquel O. de Sousa, Enilde M. S. Souza, Thamires F. de Jesus, Tiago C. Costa‐Lima, Raquel Pérez‐Maluf, Maria A. Castellani   +9 more
wiley   +1 more source

Getting more than a fair share: nutrition of worker larvae related to social parasitism in the Cape honey bee Apis mellifera capensis

, 2002
Besides activation of ovaries and thelytokous reproduction of Cape workers, larval nutrition is an important aspect in parasitism of the African honey bee.
Calis, J.N.M., Boot, W.J., Willem J. Boot, Madeleine Beekman, Mike H. Allsopp, Beekman, M., Allsopp, M.H., Johan N.M. Calis   +7 more
core   +1 more source