Male sperm storage impairs sperm quality in the zebrafish

Abstract Variation in sperm traits is widely documented both at inter- and intraspecific level. However, sperm traits vary also between ejaculates of the same male, due for example, to fluctuations in female availability. Variability in the opportunities to mate can indeed have important consequence...

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Autores principales:	Silvia Cattelan, Clelia Gasparini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8378aff2a3f5448a80d77c95859fcf25
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spelling	oai:doaj.org-article:8378aff2a3f5448a80d77c95859fcf252021-12-02T18:51:41ZMale sperm storage impairs sperm quality in the zebrafish10.1038/s41598-021-94976-x2045-2322https://doaj.org/article/8378aff2a3f5448a80d77c95859fcf252021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94976-xhttps://doaj.org/toc/2045-2322Abstract Variation in sperm traits is widely documented both at inter- and intraspecific level. However, sperm traits vary also between ejaculates of the same male, due for example, to fluctuations in female availability. Variability in the opportunities to mate can indeed have important consequences for sperm traits, as it determines how often sperm are used, and thus the rate at which they are produced and how long they are stored before the mating. While being stored within males’ bodies, sperm are subjected to ageing due to oxidative stress. Sperm storage may significantly impair sperm quality, but evidence linking male sperm storage and variation in sperm traits is still scarce. Here, we tested the effect of the duration of sperm storage on within-male variation in sperm traits in the zebrafish, Danio rerio. We found that without mating opportunities, sperm number increased as storage duration increased, indicating that sperm continue to be produced and accumulate over time within males without being discharged in another way. Long sperm storage (12 days) was associated with an overall impairment in sperm quality, namely sperm motility, sperm longevity, and sperm DNA fragmentation, indicating that sperm aged, and their quality declined during storage. Our results confirm that male sperm storage may generate substantial variation in sperm phenotype, a source of variation which is usually neglected but that should be accounted for in experimental protocols aiming to assay sperm traits or maximise fertilization success.Silvia CattelanClelia GaspariniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Silvia Cattelan Clelia Gasparini Male sperm storage impairs sperm quality in the zebrafish
description	Abstract Variation in sperm traits is widely documented both at inter- and intraspecific level. However, sperm traits vary also between ejaculates of the same male, due for example, to fluctuations in female availability. Variability in the opportunities to mate can indeed have important consequences for sperm traits, as it determines how often sperm are used, and thus the rate at which they are produced and how long they are stored before the mating. While being stored within males’ bodies, sperm are subjected to ageing due to oxidative stress. Sperm storage may significantly impair sperm quality, but evidence linking male sperm storage and variation in sperm traits is still scarce. Here, we tested the effect of the duration of sperm storage on within-male variation in sperm traits in the zebrafish, Danio rerio. We found that without mating opportunities, sperm number increased as storage duration increased, indicating that sperm continue to be produced and accumulate over time within males without being discharged in another way. Long sperm storage (12 days) was associated with an overall impairment in sperm quality, namely sperm motility, sperm longevity, and sperm DNA fragmentation, indicating that sperm aged, and their quality declined during storage. Our results confirm that male sperm storage may generate substantial variation in sperm phenotype, a source of variation which is usually neglected but that should be accounted for in experimental protocols aiming to assay sperm traits or maximise fertilization success.
format	article
author	Silvia Cattelan Clelia Gasparini
author_facet	Silvia Cattelan Clelia Gasparini
author_sort	Silvia Cattelan
title	Male sperm storage impairs sperm quality in the zebrafish
title_short	Male sperm storage impairs sperm quality in the zebrafish
title_full	Male sperm storage impairs sperm quality in the zebrafish
title_fullStr	Male sperm storage impairs sperm quality in the zebrafish
title_full_unstemmed	Male sperm storage impairs sperm quality in the zebrafish
title_sort	male sperm storage impairs sperm quality in the zebrafish
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8378aff2a3f5448a80d77c95859fcf25
work_keys_str_mv	AT silviacattelan malespermstorageimpairsspermqualityinthezebrafish AT cleliagasparini malespermstorageimpairsspermqualityinthezebrafish
_version_	1718377394013732864

Male sperm storage impairs sperm quality in the zebrafish

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