Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.

Sperm competition leads to increased sperm production in many taxa. This response may result from increases in testes size, changes in testicular architecture or changes in the kinetics of spermatogenesis, but the impact of each one of these processes on sperm production has not been studied in an i...

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Autores principales:	Javier delBarco-Trillo, Maximiliano Tourmente, Eduardo R S Roldan
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/841740453fa34ff9b8978fd8b17c4069
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spelling	oai:doaj.org-article:841740453fa34ff9b8978fd8b17c40692021-11-18T08:54:27ZMetabolic rate limits the effect of sperm competition on mammalian spermatogenesis.1932-620310.1371/journal.pone.0076510https://doaj.org/article/841740453fa34ff9b8978fd8b17c40692013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24069461/?tool=EBIhttps://doaj.org/toc/1932-6203Sperm competition leads to increased sperm production in many taxa. This response may result from increases in testes size, changes in testicular architecture or changes in the kinetics of spermatogenesis, but the impact of each one of these processes on sperm production has not been studied in an integrated manner. Furthermore, such response may be limited in species with low mass-specific metabolic rate (MSMR), i.e., large-bodied species, because they cannot process energy and resources efficiently enough both at the organismic and cellular levels. Here we compare 99 mammalian species and show that higher levels of sperm competition correlated with a) higher proportions of seminiferous tubules, b) shorter seminiferous epithelium cycle lengths (SECL) which reduce the time required to produce sperm, and c) higher efficiencies of Sertoli cells (involved in sperm maturation). These responses to sperm competition, in turn, result in higher daily sperm production, more sperm stored in the epididymides, and more sperm in the ejaculate. However, the two processes that require processing resources at faster rates (SECL and efficiency of Sertoli cells) only respond to sperm competition in species with high MSMR. Thus, increases in sperm production with intense sperm competition occur via a complex network of mechanisms, but some are constrained by MSMR.Javier delBarco-TrilloMaximiliano TourmenteEduardo R S RoldanPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e76510 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Javier delBarco-Trillo Maximiliano Tourmente Eduardo R S Roldan Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
description	Sperm competition leads to increased sperm production in many taxa. This response may result from increases in testes size, changes in testicular architecture or changes in the kinetics of spermatogenesis, but the impact of each one of these processes on sperm production has not been studied in an integrated manner. Furthermore, such response may be limited in species with low mass-specific metabolic rate (MSMR), i.e., large-bodied species, because they cannot process energy and resources efficiently enough both at the organismic and cellular levels. Here we compare 99 mammalian species and show that higher levels of sperm competition correlated with a) higher proportions of seminiferous tubules, b) shorter seminiferous epithelium cycle lengths (SECL) which reduce the time required to produce sperm, and c) higher efficiencies of Sertoli cells (involved in sperm maturation). These responses to sperm competition, in turn, result in higher daily sperm production, more sperm stored in the epididymides, and more sperm in the ejaculate. However, the two processes that require processing resources at faster rates (SECL and efficiency of Sertoli cells) only respond to sperm competition in species with high MSMR. Thus, increases in sperm production with intense sperm competition occur via a complex network of mechanisms, but some are constrained by MSMR.
format	article
author	Javier delBarco-Trillo Maximiliano Tourmente Eduardo R S Roldan
author_facet	Javier delBarco-Trillo Maximiliano Tourmente Eduardo R S Roldan
author_sort	Javier delBarco-Trillo
title	Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
title_short	Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
title_full	Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
title_fullStr	Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
title_full_unstemmed	Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
title_sort	metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/841740453fa34ff9b8978fd8b17c4069
work_keys_str_mv	AT javierdelbarcotrillo metabolicratelimitstheeffectofspermcompetitiononmammalianspermatogenesis AT maximilianotourmente metabolicratelimitstheeffectofspermcompetitiononmammalianspermatogenesis AT eduardorsroldan metabolicratelimitstheeffectofspermcompetitiononmammalianspermatogenesis
_version_	1718421213272866816

Metabolic rate limits the effect of sperm competition on mammalian spermatogenesis.

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