Results 31 to 40 of about 30,915 (147)

Sex gap in aging and longevity: can sex chromosomes play a role?

Biology of Sex Differences, 2018
It is well known that women live longer than men. This gap is observed in most human populations and can even reach 10–15 years. In addition, most of the known super centenarians (i.e., humans who lived for > 110 years) are women. The differences in life
Gabriel A.B. Marais, Jean-Michel Gaillard, Cristina Vieira, Ingrid Plotton, Damien Sanlaville, François Gueyffier, Jean-Francois Lemaitre   +6 more
doaj   +1 more source

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

Evolutionary stasis of the pseudoautosomal boundary in strepsirrhine primates

eLife, 2020
Sex chromosomes are typically comprised of a non-recombining region and a recombining pseudoautosomal region. Accurately quantifying the relative size of these regions is critical for sex-chromosome biology both from a functional and evolutionary ...
Rylan Shearn, Alison E Wright, Sylvain Mousset, Corinne Régis, Simon Penel, Jean-François Lemaitre, Guillaume Douay, Brigitte Crouau-Roy, Emilie Lecompte, Gabriel AB Marais   +9 more
doaj   +1 more source

A major 6 Mb superlocus is involved in pyrethroid resistance in the common bed bug Cimex lectularius

Evolutionary Applications, 2023
In the last few years, the bed bug Cimex lectularius has been an increasing problem worldwide, mainly due to the development of insecticide resistance to pyrethroids.
Chloé Haberkorn, Jean‐Philippe David, Hélène Henri, Jean‐Marie Delpuech, Romain Lasseur, Fabrice Vavre, Julien Varaldi   +6 more
doaj   +1 more source

Larval density in the invasive Drosophila suzukii: Immediate and delayed effects on life‐history traits

Ecology and Evolution, 2023
The effects of density are key in determining population dynamics, since they can positively or negatively affect the fitness of individuals. These effects have great relevance for polyphagous insects for which immature stages develop within a single ...
Alicia Reyes‐Ramírez, Zaïnab Belgaidi, Patricia Gibert, Thomas Pommier, Aurélie Siberchicot, Laurence Mouton, Emmanuel Desouhant   +6 more
doaj   +1 more source

Adaptations to different habitats in sexual and asexual populations of parasitoid wasps: a meta-analysis [PDF]

PeerJ, 2017
Background Coexistence of sexual and asexual populations remains a key question in evolutionary ecology. We address the question how an asexual and a sexual form of the parasitoid Venturia canescens can coexist in southern Europe.
Isabelle Amat, Jacques J.M. van Alphen, Alex Kacelnik, Emmanuel Desouhant, Carlos Bernstein   +4 more
doaj   +2 more sources

Reproductive success under constraints: Does increased maternal activity during lactation offset poor habitat and individual quality in an income breeder?

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐induced environmental modifications may alter forage access and, hence, how animals manage energy trade‐offs during critical periods. Reproduction, especially lactation, is the most energetically costly process for female mammals.
L. Monica Trondrud, Jean‐Michel Gaillard, Nadège C. Bonnot, Nicolas Morellet, Yannick Chaval, Arnaud Bonnet, Bruno Lourtet, A. J. Mark Hewison   +7 more
wiley   +1 more source

Endoparasitoid lifestyle promotes endogenization and domestication of dsDNA viruses

eLife, 2023
The accidental endogenization of viral elements within eukaryotic genomes can occasionally provide significant evolutionary benefits, giving rise to their long-term retention, that is, to viral domestication.
Benjamin Guinet, David Lepetit, Sylvain Charlat, Peter N Buhl, David G Notton, Astrid Cruaud, Jean-Yves Rasplus, Julia Stigenberg, Damien M de Vienne, Bastien Boussau, Julien Varaldi   +10 more
doaj   +1 more source

Vital events, vital relations: the structure of relations in an identity database Événements vitaux, liens vitaux : la structure des liens dans une base de données d'identité civile

Journal of the Royal Anthropological Institute, EarlyView.
The National Database and Registration Authority (NADRA) manages Pakistan's biometric‐based national identity database, one of the largest identification systems of its kind in the world. This article examines bureaucratic practices used during identity registration to record ‘vital events’ in the lives of citizens: birth, marriage, divorce, and death.
Zehra Hashmi
wiley   +1 more source

Analyses of symbiotic bacterial communities in the plant pest Bemisia tabaci reveal high prevalence of Candidatus Hemipteriphilus asiaticus on the African continent

Peer Community Journal, 2022
Microbial symbionts are widespread in insects and some of them have been associated with adaptive changes. Primary symbionts (P-symbionts) have a nutritional role that allows their hosts to feed on unbalanced diets (plant sap, wood, blood).
Mouton, Laurence, Henri, Hélène, Romba, Rahim, Belgaidi, Zainab, Gnankiné, Olivier, Vavre, Fabrice   +5 more
doaj   +1 more source