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Identification of marine fish eggs: a biochemical genetics approach
Mork, J.; Solemdal, P.; Sundnes, G. (1983). Identification of marine fish eggs: a biochemical genetics approach. Can. J. Fish. Aquat. Sci. 40(3): 361-369
In: Canadian Journal of Fisheries and Aquatic Sciences = Journal canadien des sciences halieutiques et aquatiques. National Research Council Canada: Ottawa. ISSN 0706-652X, more
Peer reviewed article  

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Keywords
    Biochemical analysis; Enzymes; Fish eggs; Genetics; Identification keys; Pelagic environment; Tissues; Gadidae Rafinesque, 1810 [WoRMS]; Pleuronectiformes [WoRMS]; Marine

Authors  Top 
  • Mork, J.
  • Solemdal, P.
  • Sundnes, G.

Abstract
    The authors studied inter- and intra-specific variation at LDH (lactate dehydrogenase; EC 1.1.1.27) loci in 11 gadoid and 6 flatfish species regularly occurring in Norwegian coastal waters by means of isoelectric focusing and histochemical staining techniques. No two species showed identical locus A (white skeletal muscle predominating) zymograms. Polymorphism at LDH A was observed in haddock (Gadus aeglefinus), coalfish (G. Viren), Norway pout (G. Esmarkii), four-bearded rockling (Onos cimbrius), and dab (Limanda limanda). The allelic nature of observed LDH variants was confirmed by controlled crossings in cod (G. Morhua, locus B), Norway pout (locus A), and haddock (locus A). Analyses of artificially fertilized eggs (in four species) and prenatal eggs from ripening ovaries (in 10 species) revealed a general predominance of locus A products.

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