Assessment of sperm competition by European bitterling, Rhodeus sericeus.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F03%3A67030007" target="_blank" >RIV/68081766:_____/03:67030007 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Assessment of sperm competition by European bitterling, Rhodeus sericeus.
Original language description
We investigated male assessment of sperm competition in the bitterling. Field experiments showed males increased their inspection rate of mussels into which sperm had been experimentally released. Males avoided leading females to mussels that contained high numbers of embryos, but did not alter their leading behavior in response to the presence of sperm. In laboratory experiments males also increased their inspection rate of mussels into which sperm had been released and also failed to alter their leading behavior in response to the presence of sperm in mussels. However, males avoided leading females to mussels in proximity to other males. In a second field study, territorial males ejaculated into mussels at a low rate in the absence of competitors, increase the ejaculations in competition with a rival, then decrease ejaculate expenditure as the number of competing males increased. Observed data significantly correlated with predicted estimates of ejaculate expenditure.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EG - Zoology
OECD FORD branch
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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