Počet záznamů: 1
Assessment of sperm competition by European bitterling, Rhodeus sericeus
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SYSNO ASEP 0164440 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve SCOPUS Název Assessment of sperm competition by European bitterling, Rhodeus sericeus Tvůrce(i) Smith, C. (GB)
Reichard, Martin (UBO-W) RID, ORCID, SAI, SAI
Jurajda, Pavel (UBO-W) RID, SAI, ORCIDZdroj.dok. Behavioral Ecology and Sociobiology. - : Springer - ISSN 0340-5443
Roč. 53, č. 4 (2003), s. 206-213Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Acheilognathinae ; alternative mating tactics ; ESS model Vědní obor RIV EG - Zoologie CEZ AV0Z6093917 - UBO-W EID SCOPUS 0038344804 DOI 10.1007/s00265-002-0576-x Anotace 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. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2004
Počet záznamů: 1