Variation in apical hook length reflects the intensity of sperm competition in murine rodents.

<h4>Background</h4>Post-copulatory sexual selection has been shown to shape morphology of male gametes. Both directional and stabilizing selection on sperm phenotype have been documented in vertebrates in response to sexual promiscuity.<h4>Methodology</h4>Here we investigated...

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Autores principales:	Martin Šandera, Tomáš Albrecht, Pavel Stopka
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6e760e7218ef416e80010c288ea24244
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spelling	oai:doaj.org-article:6e760e7218ef416e80010c288ea242442021-11-18T07:38:44ZVariation in apical hook length reflects the intensity of sperm competition in murine rodents.1932-620310.1371/journal.pone.0068427https://doaj.org/article/6e760e7218ef416e80010c288ea242442013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23844198/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Post-copulatory sexual selection has been shown to shape morphology of male gametes. Both directional and stabilizing selection on sperm phenotype have been documented in vertebrates in response to sexual promiscuity.<h4>Methodology</h4>Here we investigated the degree of variance in apical hook length and tail length in six taxa of murine rodents.<h4>Conclusions</h4>Tail sperm length and apical hook length were positively associated with relative testis mass, our proxy for levels of sperm competition, thus indicating directional post-copulatory selection on sperm phenotypes. Moreover, our study shows that increased levels of sperm competition lead to the reduction of variance in the hook length, indicating stabilizing selection. Hence, the higher risk of sperm competition affects increasing hook length together with decreasing variance in the hook length. Species-specific post-copulatory sexual selection likely optimizes sperm morphology.Martin ŠanderaTomáš AlbrechtPavel StopkaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e68427 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martin Šandera Tomáš Albrecht Pavel Stopka Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
description	<h4>Background</h4>Post-copulatory sexual selection has been shown to shape morphology of male gametes. Both directional and stabilizing selection on sperm phenotype have been documented in vertebrates in response to sexual promiscuity.<h4>Methodology</h4>Here we investigated the degree of variance in apical hook length and tail length in six taxa of murine rodents.<h4>Conclusions</h4>Tail sperm length and apical hook length were positively associated with relative testis mass, our proxy for levels of sperm competition, thus indicating directional post-copulatory selection on sperm phenotypes. Moreover, our study shows that increased levels of sperm competition lead to the reduction of variance in the hook length, indicating stabilizing selection. Hence, the higher risk of sperm competition affects increasing hook length together with decreasing variance in the hook length. Species-specific post-copulatory sexual selection likely optimizes sperm morphology.
format	article
author	Martin Šandera Tomáš Albrecht Pavel Stopka
author_facet	Martin Šandera Tomáš Albrecht Pavel Stopka
author_sort	Martin Šandera
title	Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
title_short	Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
title_full	Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
title_fullStr	Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
title_full_unstemmed	Variation in apical hook length reflects the intensity of sperm competition in murine rodents.
title_sort	variation in apical hook length reflects the intensity of sperm competition in murine rodents.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/6e760e7218ef416e80010c288ea24244
work_keys_str_mv	AT martinsandera variationinapicalhooklengthreflectstheintensityofspermcompetitioninmurinerodents AT tomasalbrecht variationinapicalhooklengthreflectstheintensityofspermcompetitioninmurinerodents AT pavelstopka variationinapicalhooklengthreflectstheintensityofspermcompetitioninmurinerodents
_version_	1718423167048876032

Variation in apical hook length reflects the intensity of sperm competition in murine rodents.

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