Sexual selection and the evolution of sperm quality

JL Fitzpatrick, S Lüpold - Molecular Human Reproduction, 2014‏ - academic.oup.com
Sperm experience intense and varied selection that dramatically impacts the evolution of
sperm quality. Selection acts to ensure that sperm are fertilization-competent and able to …

Social regulation of gene expression in the hypothalamic-pituitary-gonadal axis

KP Maruska, RD Fernald - Physiology, 2011‏ - journals.physiology.org
Reproduction is a critically important event in every animals' life and in all vertebrates is
controlled by the brain via the hypothalamic-pituitary-gonadal (HPG) axis. In many species …

[HTML][HTML] Sub-acute exposure of male guppies (Poecilia reticulata) to environmentally relevant concentrations of PFOA and GenX induces significant changes in the …

C Gasparini, S Iori, E Pietropoli, M Bonato… - Environment …, 2024‏ - Elsevier
Poly-and perfluoroalkyl substances (PFAS) are frequently detected in the environment and
are linked to adverse reproductive health outcomes in humans. Although legacy PFAS have …

Cryptic female preference for genetically unrelated males is mediated by ovarian fluid in the guppy

C Gasparini, A Pilastro - Proceedings of the Royal …, 2011‏ - royalsocietypublishing.org
As inbreeding is costly, it has been suggested that polyandry may evolve as a means to
reduce the negative fitness consequences of mating with genetically related males. While …

Reproducing in hot water: Experimental heatwaves deteriorate multiple reproductive traits in a freshwater ectotherm

MC Breedveld, A Devigili, O Borgheresi… - Functional …, 2023‏ - Wiley Online Library
Heatwaves are occurring at an increasing frequency and intensity under ongoing climate
change. As many reproductive traits—including mating behaviour and gamete traits—are …

Do male secondary sexual characters signal ejaculate quality? A meta‐analysis

BS Mautz, AP Møller, MD Jennions - Biological Reviews, 2013‏ - Wiley Online Library
There are two reasons why researchers are interested in the phenotypic relationship
between the expression of male secondary sexual characters (SSCs) and 'ejaculate …

The effects of male age, sperm age and mating history on ejaculate senescence

R Vega‐Trejo, RJ Fox, M Iglesias‐Carrasco… - Functional …, 2019‏ - Wiley Online Library
In polyandrous species, a male's reproductive success depends on his ability to fertilize
females, which, in turn, depends on his mating ability and his ability to produce competitive …

Multivariate selection drives concordant patterns of pre-and postcopulatory sexual selection in a livebearing fish

A Devigili, JP Evans, A Di Nisio, A Pilastro - Nature communications, 2015‏ - nature.com
In many species, females mate with multiple partners, meaning that sexual selection on
male traits operates across a spectrum that encompasses the competition for mates (that is …

Condition‐dependent expression of pre‐and postcopulatory sexual traits in guppies

MM Rahman, JL Kelley, JP Evans - Ecology and evolution, 2013‏ - Wiley Online Library
Female choice can impose persistent directional selection on male sexually selected traits,
yet such traits often exhibit high levels of phenotypic variation. One explanation for this …

Sperm storage by males causes changes in sperm phenotype and influences the reproductive fitness of males and their sons

C Gasparini, R Dosselli, JP Evans - Evolution Letters, 2017‏ - academic.oup.com
Recent studies suggest that environmentally induced effects on sperm phenotype can
influence offspring phenotype beyond the classic Mendelian inheritance mechanism …