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Genetic Variation in Resistance of Arctic Char to Fungal Infection
Author(s) -
Nilsson Jan
Publication year - 1992
Publication title -
journal of aquatic animal health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 52
eISSN - 1548-8667
pISSN - 0899-7659
DOI - 10.1577/1548-8667(1992)004<0126:gviroa>2.3.co;2
Subject(s) - arctic char , biology , salvelinus , heritability , outbreak , resistance (ecology) , zoology , arctic , genetic variation , fish <actinopterygii> , veterinary medicine , ecology , genetics , fishery , gene , trout , medicine , virology
Mortalities during outbreaks of fungal infections were recorded for 92 families of Arctic char Salvelinus alpinus reared at two commercial fish farms. A positive relationship was demonstrated between mortalities of replicated families raised at two fish farms (r = 0.52; P < 0.01). Heritability for mortality was estimated to be 0.34 ± 0.14 (SE) from sires and 0.10 ± 0.08 from dams. Genetic correlations between growth characters and mortality suggest a positive genetic relationship between good growth performance and resistance to fungal infections.