Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus )
Numbers of studies in externally fertilizing fish species provide evidence for an effect of ovarian fluid on sperm motility characteristics such as duration of forward mobility, velocity or percent motile sperm cells. Yet, because of variations among females in the quality of their ovarian fluid, su...
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ftreroch:oai:doc.rero.ch:314739 2023-05-15T14:30:11+02:00 Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) Urbach, Davnah Folstad, Ivar Rudolfsen, Geir 2018-06-18T17:49:53Z http://doc.rero.ch/record/314739/files/265_2004_Article_876.pdf eng eng http://doc.rero.ch/record/314739/files/265_2004_Article_876.pdf 2018 ftreroch 2023-02-16T17:31:31Z Numbers of studies in externally fertilizing fish species provide evidence for an effect of ovarian fluid on sperm motility characteristics such as duration of forward mobility, velocity or percent motile sperm cells. Yet, because of variations among females in the quality of their ovarian fluid, such effects might differ between individuals. Additionally, ovarian fluid from different females could also be expected to affect each ejaculate differently, resulting in cryptic female choice. In this study on Artic charr (Salvelnius alpinus), sperm velocity from several males was measured in the diluted ovarian fluid of several females according to a fully balanced crossing design. This design allowed us to estimate variations among females in the effect of their ovarian fluid on the velocity of sperm from different males, and to detect variations among males in the ability of their sperm to swim in ovarian fluid. Sperm velocity was estimated by computer-assisted sperm analysis. Average velocity was found to vary among females, with some females having constantly higher velocity measurements in their ovarian fluid, and among males, indicating that some males had overall faster sperm in ovarian fluid than others. Moreover, variation in sperm velocity was shown to depend on individual female-male interactions. Our results document that females vary in the effect of their ovarian fluid on sperm velocity and that their ovarian fluid may stimulate sperm velocity according to individual characteristics of males. This latter result suggests a potential mechanism for cryptic female choice Other/Unknown Material Arctic charr Arctic Salvelinus alpinus RERO DOC Digital Library Arctic |
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RERO DOC Digital Library |
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ftreroch |
language |
English |
description |
Numbers of studies in externally fertilizing fish species provide evidence for an effect of ovarian fluid on sperm motility characteristics such as duration of forward mobility, velocity or percent motile sperm cells. Yet, because of variations among females in the quality of their ovarian fluid, such effects might differ between individuals. Additionally, ovarian fluid from different females could also be expected to affect each ejaculate differently, resulting in cryptic female choice. In this study on Artic charr (Salvelnius alpinus), sperm velocity from several males was measured in the diluted ovarian fluid of several females according to a fully balanced crossing design. This design allowed us to estimate variations among females in the effect of their ovarian fluid on the velocity of sperm from different males, and to detect variations among males in the ability of their sperm to swim in ovarian fluid. Sperm velocity was estimated by computer-assisted sperm analysis. Average velocity was found to vary among females, with some females having constantly higher velocity measurements in their ovarian fluid, and among males, indicating that some males had overall faster sperm in ovarian fluid than others. Moreover, variation in sperm velocity was shown to depend on individual female-male interactions. Our results document that females vary in the effect of their ovarian fluid on sperm velocity and that their ovarian fluid may stimulate sperm velocity according to individual characteristics of males. This latter result suggests a potential mechanism for cryptic female choice |
author |
Urbach, Davnah Folstad, Ivar Rudolfsen, Geir |
spellingShingle |
Urbach, Davnah Folstad, Ivar Rudolfsen, Geir Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
author_facet |
Urbach, Davnah Folstad, Ivar Rudolfsen, Geir |
author_sort |
Urbach, Davnah |
title |
Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
title_short |
Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
title_full |
Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
title_fullStr |
Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
title_full_unstemmed |
Effects of ovarian fluid on sperm velocity in Arctic charr ( Salvelinus alpinus ) |
title_sort |
effects of ovarian fluid on sperm velocity in arctic charr ( salvelinus alpinus ) |
publishDate |
2018 |
url |
http://doc.rero.ch/record/314739/files/265_2004_Article_876.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
http://doc.rero.ch/record/314739/files/265_2004_Article_876.pdf |
_version_ |
1766304080924246016 |