Evolution of sperm morphology in anurans : Insights into the roles of mating system and spawning location [PDF]
, 2014 Background: The degree of postcopulatory sexual selection, comprising variable degrees of sperm competition and cryptic female choice, is an important evolutionary force to influence sperm form and function.
Jehle, R, Liao, WB, Lou, SL, Zeng, Y
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Functional relevance of the newly evolved sperm dynein intermediate chain multigene family in Drosophila melanogaster males. [PDF]
, 2012 In many animal species, traits associated with male fitness evolve rapidly. Intersexual conflict and male-male competition have been suggested to drive this rapid evolution.
Abbassi, Mashya +3 more
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Rogue sperm indicate sexually antagonistic coevolution in nematodes. [PDF]
PLoS Biology, 2014 Intense reproductive competition often continues long after animals finish mating. In many species, sperm from one male compete with those from others to find and fertilize oocytes.
Ronald E Ellis, Lukas Schärer
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Sperm mobility: mechanisms of fertilizing efficiency, genetic variation and phenotypic relationship with male status in the domestic fowl, Gallus gallus domesticus [PDF]
, 2002 When females are sexually promiscuous, sexual selection continues after insemination through sperm competition and cryptic female choice, and male traits conveying an advantage in competitive fertilization are selected for. Although individual male and
Allen J Feltmann +6 more
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BMC Biology, 2018 Background The phenotypes of sperm are generally believed to be under the control of the diploid genotype of the male producing them rather than their own haploid genotypes, because developing spermatids share cytoplasm through intercellular bridges ...
Richard Borowsky +3 more
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Sexual Conflict and Sperm Competition [PDF]
Cold Spring Harbor Perspectives in Biology, 2014 Traits that increase a male's fertilization success during sperm competition can be harmful to females and therefore represent a source of sexual conflict. In this review, we consider the variety of male adaptations to sperm competition (MASC) that may give rise to sexual conflict-including mate guarding, prolonged copulations, the transfer of large ...
Dominic A, Edward +2 more
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A cost for high levels of sperm competition in rodents: Increased sperm DNA fragmentation [PDF]
, 2016 Spermcompetition, a prevalent evolutionary process inwhich the spermatozoa of two or more males compete for the fertilization of the same ovum, leads to morphological and physiological adaptations, including increases in energetic metabolism that may ...
Delbarco-Trillo, Javier +5 more
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Sperm Competition Risk and Sexual Coercion Predict Copulatory Duration in Humans
Evolutionary Psychology, 2015 A man whose romantic partner is sexually unfaithful is at risk of sperm competition and cuckoldry—unwitting investment in offspring to whom he is genetically unrelated.
Nicole Barbaro +2 more
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Gamete evolution and sperm numbers: sperm competition versus sperm limitation [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2014 Both gamete competition and gamete limitation can generate anisogamy from ancestral isogamy, and both sperm competition (SC) and sperm limitation (SL) can increase sperm numbers. Here, we compare the marginal benefits due to these two components at any given population level of sperm production using the risk and intensity models in sperm economics. We
Geoff A, Parker, Jussi, Lehtonen
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Evolution of female multiple mating : A quantitative model of the “sexually selected sperm” hypothesis [PDF]
, 2014 This article is protected by copyright. All rights reserved. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is ...
Bocedi, Greta, Reid, Jane M
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