Multiple paternity and variance in male fertilization success within Atlantic salmon Salmo salar redds in a naturally spawning population

L. K. Weir, C. Breau, J. A. Hutchings, R. A. Cunjak

Résultat de recherche: Articleexamen par les pairs

26 Citations (Scopus)

Résumé

The incidence and magnitude of multiple paternity were estimated for a natural, unmanipulated spawning population of Atlantic salmon Salmo salar. Egg nests were surveyed in the autumn and sub-samples were excavated the following spring. Parentage data derived from microsatellite DNA revealed an unexpectedly high level of multiple paternity. Within a single redd, females may mate with as many as 16 different males, including small mature male parr and large anadromous males. Multiple paternity was most pronounced in areas of highest redd density, corresponding with increased abundances of mature male parr. In addition, there was considerable variation in success among males, although this variability did not depend upon the number of males participating in spawning. This work underscores the value of undertaking genetic studies on the mating systems of fishes in unmanipulated, natural environments.

Langue d'origineEnglish
Pages (de-à)479-493
Nombre de pages15
JournalJournal of Fish Biology
Volume77
Numéro de publication3
DOI
Statut de publicationPublished - août 2010

ASJC Scopus Subject Areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

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