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Allozyme differentiation of sixteen species of ommastrephid squid (Mollusca, Cephalopoda)

Published online by Cambridge University Press:  12 May 2004

K. Yokawa
K. Yokawa
Affiliation:
National Research Institute of Far Seas Fisheries, 7-1, Orido 5-chome, Shimizu, Shizuoka 424, Japan
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Abstract

Allozyme differentiation was investigated at 23 putative enzyme coding loci in 16 ommastrephid squids to identify species and to assess genetic relationships. The species examined were Illex illecebrosus, I. coindetii, I. argentinus, Todaropsis eblanae, Todarodes sagittatus, T. angolensis, T. filippovae, T. pacificus pacificus, Nototodarus sloanii, N. gouldi, Martialia hyadesi, Ommastrephes bartramii, Sthenoteuthis pteropus, S. oualaniensis, Eucleoteuthis luminosa, and Dosidicus gigas. A dendrogram based on Nei's genetic distance between the species closely approximates to the latest systematics based on morphological characters, but the positions of M. hyadesi and T. eblanae were considerably distant from all other species. The results demonstrate the benefits of further biochemical analysis to an understanding of the systematics of the ommastrephid squids.

Keywords

squidOmmastrephidaeallozymeelectrophoresis
Type
Research Article
Information
Antarctic Science , Volume 6 , Issue 2 , June 1994 , pp. 201 - 204
Copyright
© Antarctic Science Ltd 1994

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