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Fluctuating Asymmetry and Isozyme Variation in Atlantic Salmon: Relation to Age of Wild and Hatchery Fish
Author(s) -
Moran Paloma,
Izquierdo Jorge I.,
Pendas Alberto M.,
GarciaVazquez Eva
Publication year - 1997
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1997)126<0194:faaivi>2.3.co;2
Subject(s) - hatchery , fluctuating asymmetry , salmo , biology , trait , fish <actinopterygii> , fishery , zoology , computer science , programming language
Isozyme variation and fluctuating asymmetry at different ages of Atlantic salmon Salmo salar were analyzed for hatchery and wild stocks. Significant age‐related decrease of fluctuating asymmetry was detected in wild stocks but not in hatchery stocks. Natural selection may act against phenotype asymmetry, or some trait associated with asymmetry, in wild but not in hatchery populations. Heterozygosity did not vary significantly with fish age in most cases, suggesting the lack of association between heterozygosity and asymmetry.