Genus Gadus (Gadidae): Composition, distribution, and evolution of forms
2015
Stroganov, A. N.
Analysis of the morphobiological and genetic characteristics of the Gadus genus has been performed, the peculiarities of the genus evolution are discussed, and the resettlement has been reconstructed for the period of 5.5-5.4 million years until the present. The genus Gadus comprises two polytypic species, Atlantic cod G. morhua and Pacific cod, and both species form several subspecies combined into two phylogenetic groups. The taxonomical status of the Greenland cod G. macrocephalus ogac has been specified. The analyzed material evidences to the illegality of synonymy of the Greenland cod and the White Sea cod, since the latter species is genetically a product of the Holocene resettlement of the Atlantic cod and, thus, appears as its subspecies, but the Greenland cod is a product of the Holocene resettlement of the Pacific cod, appearing as its subspecies.
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