Results 11 to 20 of about 758 (171)

Endosymbiont-free ants: Molecular biological evidence that neither Wolbachia, Cardinium or any other bacterial endosymbionts play a role in thelytokous parthenogenesis in the harvester ant species, Messor barbarus and M. capitatus (Hymenoptera: Formicidae) [PDF]

open access: yesEuropean Journal of Entomology, 2013
Thelytokous parthenogenesis is a type of sex determination in which females are produced from unfertilized eggs. Genetic and endosymbiont-induced forms of thelytoky have been described in the Hymenoptera. Our study has revealed that Wolbachia, Cardinium,
Begoña Peco   +2 more
exaly   +4 more sources

Genetic evidence for parthenogenesis in the small carpenter bee Ceratina dallatoreana (Apidae, Ceratinini) in its native distribution range [PDF]

open access: yesJournal of Hymenoptera Research, 2023
Arrhenotoky is the typical mode of reproduction in Hymenoptera. Diploid females develop from fertilized eggs, whereas haploid males originate from unfertilized eggs.
Michael Mikát, Jakub Straka
doaj   +5 more sources

Thelytokous parthenogenesis and the heterogeneous decay of mating behaviours in a bushcricket (Orthopterida)

open access: yesJournal of Zoological Systematics and Evolutionary Research, 2010
Lehmann GUC, Siozios S, Bourtzis K, Reinhold K, Lehmann AW. Thelytokous parthenogenesis and the heterogeneous decay of mating behaviours in a bushcricket (Orthopterida). Journal of Zoological Systematics & Evolutionary Research.
Gerlind U.C. Lehmann   +4 more
core   +3 more sources

Population genetic structure, worker reproduction and thelytokous parthenogenesis in the desert ant Cataglyphis sabulosa [PDF]

open access: yesHeredity, 2008
In social Hymenoptera, within-colony relatedness is usually high due to the haplodiploid sex-determining system. However, factors such as the presence of multiple reproductive queens (polygyny), multiple queen matings (polyandry) or worker reproduction result in decreased relatedness among workers and the brood they rear, and consequently dilute their ...
Timmermans, Iris   +3 more
openaire   +4 more sources

Parthenogenesis in scorpions: some history - new data

open access: yesJournal of Venomous Animals and Toxins including Tropical Diseases, 2008
Parthenogenesis, a rare phenomenon in Chelicerates, apart from mites, is reviewed in scorpions, notably Tityus serrulatus Lutz & Mello from Brazil, Tityus columbianus (Thorell) from Colombia and Tityus metuendus Pocock from Peru and Brazil.
W. R. Lourenço
doaj   +2 more sources

Hybridogenesis through thelytokous parthenogenesis in twoCataglyphisdesert ants [PDF]

open access: yesMolecular Ecology, 2012
AbstractHybridogenesis is a sexual reproductive system, whereby parents from different genetic origin hybridize. Both the maternal and paternal genomes are expressed in somatic tissues, but the paternal genome is systematically excluded from the germ line, which is therefore purely maternal.
Eyer, P.   +3 more
openaire   +4 more sources

Cytological mechanisms of thelytokous parthenogenesis in insects

open access: yesGenome, 1987
The eight female parthenogenetic mechanisms recognized in insects are organized under the broad categories "ploidy restoration" and "ploidy stasis." Each term replaces three imprecise and inappropriate existing names. Of the eight mechanisms, two are given names for the first time, and a table brings together all mechanisms in a new manner that shows ...
Richard Y. Lamb, Robert B. Willey
openaire   +2 more sources

A method for estimating variation in the phenotypic expression of morphological characters by thelytokous parthenogenesis in Apis mellifera capensis [PDF]

open access: yesApidologie, 2002
Les ouvrieres pondeuses de l'abeille du Cap (Apis mellifera capensis Escholtz) produisent une descendance femelle par parthenogenese thelytoque, ce qui permet de quantifier les effets de l'environnement sur l'expression du genotype dans les lignees clonales.
Radloff, Sarah E.   +4 more
openaire   +3 more sources

Diet-Induced Developmental and Morphological Plasticity in a Thelytokous Predatory Mite <i>Amblyseius herbicolus</i> (Chant) (Acari: Phytoseiidae). [PDF]

open access: yesEcol Evol
This study investigated how variation in prey consumption influences immature development and adult morphometric traits in the predatory mite Amblyseius herbicolus. Mites that ate more prey attained a larger size at maturity but did not develop more rapidly. Several morphometric traits were also significantly influenced by diet.
Zhang K, Zhang ZQ.
europepmc   +2 more sources

Oviposition Traits and Vitellogenin-Related Gene Functions in Ooencyrtus kuvanae [PDF]

open access: yesInsects
Ooencyrtus kuvanae is an egg parasitoid species that attacks the egg masses of Dendrolimus spp. and Lymantria spp. in China, which gives it a temporal niche advantage against pest infestations by Dendrolimus spp. and Lymantria spp.
Ciding Lu   +8 more
doaj   +2 more sources

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