Sperm competition between alternative reproductive tactics of the Atlantic salmon in vitro
2010 (English)In: Aquaculture, ISSN 0044-8486, E-ISSN 1873-5622, Vol. 302, no 04-mar, 265-269 p.Article in journal (Refereed) Published
The maintenance of brood stock in appropriate conditions is an important equirement for the production of high quality offspring. In this study, e investigated fertility of the two life history forms of Atlantic almon males, precocious parr, brought up in breeding tanks in the atchery and anadromous, migratory searanched males, caught when eturning to the home river. The sperm quality was assessed by xperiments between equal amount of sperm from one adult and one parr ale in competition to fertilize eggs of a single female. The paternity as determined by a microsatellite analysis. Parr males achieved greater eproductive success than anadromous males under competition, and nadromous adults had greater fertility in controls as compared to the perm competition situation. In total, parr males achieved 3.6 times reater fertilization success than anadromous males. Sperm ATP content ontributed significantly to male fertility. Our results provide vidence that ejaculates of precociously mature Atlantic salmon parr are f increased quality as an adaptation to high sperm competition ntensity due to better maintenance in the fish farm than in the wild.
Place, publisher, year, edition, pages
2010. Vol. 302, no 04-mar, 265-269 p.
IdentifiersURN: urn:nbn:se:sh:diva-13710DOI: 10.1016/j.aquaculture.2010.02.024ISI: 000277851300018ScopusID: 2-s2.0-77950594907OAI: oai:DiVA.org:sh-13710DiVA: diva2:462197
Som manuskript i avhandling. As manuscript in dissertation.2011-12-062011-12-062014-02-13Bibliographically approved