Postcopulatory sexual selection [PDF]
, 2002 The female reproductive tract is where competition between the sperm of different males takes place, aided and abetted by the female herself. Intense postcopulatory sexual selection fosters inter-sexual conflict and drives rapid evolutionary change to ...
A Civetta +132 more
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The bold and the sperm: positive association between boldness and sperm number in the guppy [PDF]
Royal Society Open Science, 2019 Assessing the consequences of personality traits on reproductive success is one of the most important challenges in personality studies and critical to understand the evolutionary implications of behavioural variability among animals.
Clelia Gasparini +2 more
doaj +1 more source
The Dynamics of Sperm Cooperation in a Competitive Environment [PDF]
, 2014 Sperm cooperation has evolved in a variety of taxa and is often considered a response to sperm competition, yet the benefit of this form of collective movement remains unclear.
Fisher, Heidi +3 more
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Frontiers in Zoology, 2009 Background Multidirectional interactions in social networks can have a profound effect on mate choice behavior; e.g., Poecilia mexicana males show weaker expression of mating preferences when being observed by a rival. This may be an adaptation to reduce
Kronmarck Claudia +6 more
doaj +1 more source
Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus)
Ecology and Evolution, 2021 From video recordings of spawning events, we quantified protective and cannibalistic behavior of Arctic charr occurring immediately after spawning. The number of fish cannibalizing on stray eggs was examined regarding (a) whether more than one male shed ...
Marilena Frye +3 more
doaj +1 more source
The effects of male social environment on sperm phenotype and genome integrity [PDF]
, 2019 Sperm function and quality are primary determinants of male reproductive performance and hence fitness. The presence of rival males has been shown to affect ejaculate and sperm traits in a wide range of taxa.
Devaux, Caroline +7 more
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Statistical methods for detecting genes associated with sperm competition in natural populations of Drosophila, using blocks of tightly linked single nucleotide polymorphisms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Statistics at Massey University, Albany, New Zealand [PDF]
, 2007 The purpose of the project is to develop statistical methods for detecting genes associated with sperm competition in natural populations of Drosophila (fruit flies). The flies' genotype information given by Fiumera et al.
Werner, Lillian Li
core
Sperm competition-induced plasticity in the speed of spermatogenesis [PDF]
, 2004 Background: Sperm competition between rival ejaculates over the fertilization of ova typically selects for the production of large numbers of sperm.
Athina Giannakara +42 more
core +3 more sources
Consistent paternity skew through ontogeny in Peron's tree frog (Litoria peronii). [PDF]
PLoS ONE, 2009 BACKGROUND:A large number of studies in postcopulatory sexual selection use paternity success as a proxy for fertilization success. However, selective mortality during embryonic development can lead to skews in paternity in situations of polyandry and ...
Craig D H Sherman +2 more
doaj +1 more source
Courting virtual rivals increase ejaculate size in sticklebacks ( Gasterosteus aculeatus ) [PDF]
, 2018 Sperm competition occurs when sperm of two or more males compete to fertilize a given set of eggs. Game-theory models of sperm competition predict that males, which face an increased risk of sperm competition, will invest more sperm in a mating.
Bakker, Theo +4 more
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