Cargando…
Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production
Producing sperm is costly and males have been selected to strategically adjust their sperm production and/or expenditure according to the fitness return associated with a specific mating. For example, males respond to fluctuations in the mating opportunities by adjusting the number of “ready” sperm....
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5905511/ https://www.ncbi.nlm.nih.gov/pubmed/30402061 http://dx.doi.org/10.1093/cz/zoy008 |
_version_ | 1783315277426982912 |
---|---|
author | Cattelan, Silvia Pilastro, Andrea |
author_facet | Cattelan, Silvia Pilastro, Andrea |
author_sort | Cattelan, Silvia |
collection | PubMed |
description | Producing sperm is costly and males have been selected to strategically adjust their sperm production and/or expenditure according to the fitness return associated with a specific mating. For example, males respond to fluctuations in the mating opportunities by adjusting the number of “ready” sperm. This phenomenon is known as “sperm priming” and is interpreted as a strategy to economize the investment in sperm. The cost and benefits of the sperm priming response, however, are expected to depend on a male’s baseline sperm production (BSP) in the absence of females, because of the different risk of sperm depletion and the nonlinearly increasing costs of sperm production. We tested this prediction in 2 replicated lines of male guppies Poecilia reticulata that were artificially selected for high and low BSP. BSP has a large genetic variance and a high sire heritability in guppies, and males respond to the perceived mating opportunities by increasing the number of “ready” sperm. We investigated whether males with a different BSP differed in their sperm priming response. We found that when the perceived mating opportunities increased, males from low-sperm lines had a stronger sperm priming response than those from high-sperm lines. This result suggests that adaptive plasticity in sperm priming has the potential to evolve in response to different levels of BSP. The comparison between guppy populations with different levels of sperm production would allow to test whether the pattern reported here is also observed at the interpopulation level. |
format | Online Article Text |
id | pubmed-5905511 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-59055112018-11-06 Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production Cattelan, Silvia Pilastro, Andrea Curr Zool Special Column: Ecology and Evolution along Environmental Gradients Producing sperm is costly and males have been selected to strategically adjust their sperm production and/or expenditure according to the fitness return associated with a specific mating. For example, males respond to fluctuations in the mating opportunities by adjusting the number of “ready” sperm. This phenomenon is known as “sperm priming” and is interpreted as a strategy to economize the investment in sperm. The cost and benefits of the sperm priming response, however, are expected to depend on a male’s baseline sperm production (BSP) in the absence of females, because of the different risk of sperm depletion and the nonlinearly increasing costs of sperm production. We tested this prediction in 2 replicated lines of male guppies Poecilia reticulata that were artificially selected for high and low BSP. BSP has a large genetic variance and a high sire heritability in guppies, and males respond to the perceived mating opportunities by increasing the number of “ready” sperm. We investigated whether males with a different BSP differed in their sperm priming response. We found that when the perceived mating opportunities increased, males from low-sperm lines had a stronger sperm priming response than those from high-sperm lines. This result suggests that adaptive plasticity in sperm priming has the potential to evolve in response to different levels of BSP. The comparison between guppy populations with different levels of sperm production would allow to test whether the pattern reported here is also observed at the interpopulation level. Oxford University Press 2018-04 2018-01-22 /pmc/articles/PMC5905511/ /pubmed/30402061 http://dx.doi.org/10.1093/cz/zoy008 Text en © The Author(s) (2018). Published by Oxford University Press. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Special Column: Ecology and Evolution along Environmental Gradients Cattelan, Silvia Pilastro, Andrea Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title | Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title_full | Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title_fullStr | Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title_full_unstemmed | Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title_short | Sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
title_sort | sperm priming response to perceived mating opportunities is reduced in male guppies with high baseline sperm production |
topic | Special Column: Ecology and Evolution along Environmental Gradients |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5905511/ https://www.ncbi.nlm.nih.gov/pubmed/30402061 http://dx.doi.org/10.1093/cz/zoy008 |
work_keys_str_mv | AT cattelansilvia spermprimingresponsetoperceivedmatingopportunitiesisreducedinmaleguppieswithhighbaselinespermproduction AT pilastroandrea spermprimingresponsetoperceivedmatingopportunitiesisreducedinmaleguppieswithhighbaselinespermproduction AT spermprimingresponsetoperceivedmatingopportunitiesisreducedinmaleguppieswithhighbaselinespermproduction |