New Zealand Journal of Marine and Freshwater Research abstracts

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Genetic variation and population structure in the New Zealand snapper

P. J. Smith

R. I. C. C. Francis

L. J. Paul

Fisheries Research Division, Ministry of Agriculture and Fisheries, P.O. Box 19062, Wellington, New Zealand

Abstract Three polymorphic loci EstA, Gpi-1, and Idh were examined in an additional 10 samples from around New Zealand. Two genetically distinct stocks were apparent: one along the west coast, the other along the east coast of the North Island. There was an indication of stock mixing at Ninety Mile Beach and in the Bay of Plenty and East Cape. The distribution of alleles at the Est-4 locus revealed a third stock in Hawke Bay that is genetically more similar to the west coast than the east coast stock. Hydrological conditions in Hawke Bay are more similar to those of the west coast than to those of the north east coast of the North Island. Thus it is possible that Est-4 alleles are selectively maintained in response to an environmental factor.

N.Z. Journal of Marine and Freshwater Research 12 (4): 343-50.
Received 17 January 1978; revision received 6 September 1978. Fisheries Research Division Publication 335.

PDF file of entire paper: medium quality (696K); (scanned from paper original: notes about this process)

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