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0-group cod (Gadus morhua) in captivity: differential survival of certain genotypes
Mork, J.; Sundnes, G. (1985). 0-group cod (Gadus morhua) in captivity: differential survival of certain genotypes. Helgol. Meeresunters. 39(1): 63-70
In: Helgoländer Meeresuntersuchungen. Biologische Anstalt Helgoland: Hamburg. ISSN 0174-3597
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Biology > Genetics > Population genetics
    Captivity
    Enzymes
    Genotypes
    Survival
    Gadus morhua Linnaeus, 1758 [WoRMS]
    Marien/Kust
Auteurs  Top 
  • Mork, J.
  • Sundnes, G.
Abstract
    Genotypes at LDH-3 (lactate dehydrogenase) and PGI-1 (phosphoglucoisomerase) in 263 0-group specimens of Atlantic cod (G. morhua) caught in Trondheimsfjorden, Norway, in fall 1983 showed significantly different survival rates during 72 days in captivity. The heterozygote was nominally superior at both loci, and there was a significant accumulation of double heterozygotes among the survivors. Apparently, LDH-3 and PGI-1 are not selectively neutral, and allele frequency differences at these two loci between groups of cod in nature should not be interpreted as markers of reproductive isolation. The results are related to current concepts of cod population structure.
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