No evidence of kin bias in dispersion of young‐of‐the‐year Atlantic salmon Salmo salar L. in a natural stream |
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| Authors: | N N Brodeur M V Noël O Venter L Bernatchez S Dayanandan J W A Grant |
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| Institution: | 1. *
Department of Biology, Concordia University, 7141 Sherbrooke St West, Montréal, Québec, H4B 1M8 Canada and
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Département de biologie, Université Laval, 1030 Avenue de la Médecine, Québec, Québec G1V 0A6, Canada;2. Present address: The School of Natural and Rural Systems Management, University of Queensland, Gatton, QLD 4343, Australia.;3. Present address: The Ecology Centre, School of Integrative Biology, University of Queensland, St Lucia, QLD 4072, Australia. |
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| Abstract: | Ninety‐one young‐of‐the‐year Atlantic salmon Salmo salar were captured using a non‐invasive snorkelling technique in a 38 m section of Catamaran Brook, New Brunswick, Canada, to test whether related fish settle closer to one another than unrelated fish. A maximum likelihood estimate of parentage relationships assessed by genotyping eight microsatellite loci revealed five half‐sibling families in the sample of fish. Related juvenile S. salar were not found closer to one another than unrelated fish in three analyses at two spatial scales: a comparison of the relatedness of focal fish to their nearest neighbour and to their four nearest neighbours, and a correlation of the pair‐wise relatedness and distance matrices for all fish in the sample. The lack of a kin‐biased dispersion pattern may be related to the lower density of fish or the scarcity of full‐siblings at the study site compared to laboratory conditions. |
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| Keywords: | dispersion juvenile Atlantic salmon kinship microsatellites relatedness |
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