Female Arctic charr do not show apparent benefits from exposing their eggs to sperm from dominant males

Authors: Figenschou; Rudolfsen; Folstad

Source: Journal of Fish Biology, Volume 71, Number 1, July 2007 , pp. 284-289(6)

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Abstract:

To evaluate whether paternal effects occur on offspring traits, eggs from Arctic charr Salvelinus alpinus were fertilized with similar amount of sperm from size-matched dominant and subordinate males, in a nested design. Eggs fertilized by subordinate fathers resulted in more offspring produced than eggs fertilized by the same amount of sperm from dominant fathers. Yet, paternal status showed no significant effect on measurements of larvae total length, yolk area and yolk red intensity.

Keywords: Arctic charr; egg viability; paternal effects; paternal status; sexual selection

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2007.01477.x

Affiliations: 1: Department of Evolution and Ecology, Faculty of Science, University of Tromsø, N-9037 Tromsø, Norway

Publication date: 2007-07-01