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Evidence for mate fidelity in the Gray seal.

Amos, B.; Twiss, S.; Pomeroy, P.; Anderson, S.

Authors

B. Amos

P. Pomeroy

S. Anderson



Abstract

Colonially breeding gray seals are polygynous. Males are larger than females, compete with each other for position among aggregated females, and contribute no parental care. Genetic analysis of pups born on the island of North Rona, Scotland, reveals large numbers of full siblings, although dominant males father disproportionately few of these. This result cannot be explained by mating patterns based solely on male dominance and the spatio-temporal organization of the breeding colony. Instead, many full siblings must result from choices favoring previous parental combinations. Thus, polygyny and partner fidelity appear to operate simultaneously in this breeding colony.

Journal Article Type Article
Publication Date 1995-06
Journal Science
Print ISSN 0036-8075
Publisher American Association for the Advancement of Science
Peer Reviewed Peer Reviewed
Volume 268
Issue 5219
Pages 1897-1899
Keywords HALICHOERUS-GRYPUS; GREY SEALS; MATING SYSTEMS; SEASON
Public URL https://durham-repository.worktribe.com/output/1563741