Results 31 to 40 of about 384 (142)
Monomorium is one of the most species-rich yet taxonomically problematic ant genus. An East Asian species, M. triviale Wheeler, W.M., 1906, is reproduced by obligate thelytokous parthenogenesis and performs strict reproductive division of labor.
Naoto Idogawa +3 more
doaj +1 more source
Soft selection reduces loss of heterozygosity in asexual reproduction
Competition among offspring promotes the types of asexual reproduction that produce offspring with variation in loss of complementation. Abstract The adaptive value of sexual reproduction is still debated in evolutionary theory. It has been proposed that the advantage of sexual reproduction over asexual reproduction is to promote genetic diversity, to ...
Marco Archetti
wiley +1 more source
The present study aimed to investigate whether adult males could fertilize immature female pupae in the leek (L1) and tobacco-associated (T) Thrips tabaci lineages and to investigate the potential effects of mother to son inbreeding on the appearance of ...
Woldemelak Wondimagegn Atilaw
doaj +1 more source
The kin selection theory of genomic imprinting and modes of reproduction in the eusocial Hymenoptera
ABSTRACT Genomic imprinting is known from flowering plants and mammals but has not been confirmed for the Hymenoptera even though the eusocial Hymenoptera are prime candidates for this peculiar form of gene expression. Here, the kin selection theory of genomic imprinting is reviewed and applied to the eusocial Hymenoptera.
Jack da Silva
wiley +1 more source
Abstract Clonal reproduction can provide an advantage for invasive species to establish as it can circumvent inbreeding depression which often plagues introduced populations. The world's most widespread invasive ant, Paratrechina longicornis, was previously found to display a double‐clonal reproduction system, whereby both males and queens are produced
Shu‐Ping Tseng +7 more
wiley +1 more source
Structure of Bee Communities in Marginal Lands of the Puget Sound, USA. [PDF]
We surveyed wild bee communities in marginal lands of the Puget Sound, USA. Bee communities were highly diverse and stable across seasons, but were variable within seasons. ABSTRACT Wild bee communities in urban ecosystems are often challenged by habitat fragmentation and low floral diversity.
Sugden E +4 more
europepmc +2 more sources
Cytogenetic mechanism and genetic consequences of thelytoky in the wasp Trichogramma cacoeciae [PDF]
In Hymenoptera, complete parthenogenesis, that is thelytoky, is a common phenomenon where virgin females produce only daughters. Thelytoky is often induced by bacteria of the genus Wolbachia, but can also be genetically determined by the insect itself, as in the genus Trichogramma where both forms exist. In order to compare these two forms of thelytoky,
Vavre, F. +2 more
openaire +2 more sources
Hymenopterans are haplodiploids and unlike most other Arthropods they do not possess sexual chromosomes. Sex determination typically happens via the ploidy of individuals: haploids become males and diploids become females.
Capdevielle Dulac, Claire +6 more
doaj +1 more source
Thelytoky and Sex Determination in the Hymenoptera: Mutual Constraints [PDF]
The Hymenoptera show a high propensity for transitions from arrhenotokous reproduction (diploid females develop from fertilized eggs, haploid males from unfertilized eggs) to thelytokous reproduction (diploid females develop from unfertilized eggs). However, the evolution of thelytoky is frequently constrained by the sex determination system. Under the
openaire +2 more sources
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 +4 more
doaj +1 more source

