Fisheries Behavioral Ecology - Abstracts
Evseenko, S.A., B. Laurel, J. A. Brown, and D. Yu. Malikova. 2006. On the Gadus taxonomy: ontogenetic evidence. Journal of Ichthyology 46:351-358.
Abstract
Taxonomic comparisons of the early life history stages of Gadus species were conducted from new
and published data on morphological descriptions of eggs and yolk-sac larvae. Findings suggest that G. ogac and G. macrocephalus, two genetically similar species, can be distinguished by differences in their larval pigment
patterns, i.e., the position of postanal pigment bars. Differences in the egg chorion were also apparent
between Gadus ogac and G. morhua marisalbi.
The chorion of G. ogac is adhesive with weak striations, whereas, in G. morhua marisalbi, the chorion is nonadhesive and smooth. Collectively, these data provide supporting
evidence towards the assertion that G. ogac, G. macrocephalus, and G. morhua marisalbi are all distinct
taxa and can be distinguished at the first stages of life.
Last updated
26 April, 2007
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