Charters, Robbie A., Lester, Robert J.G., Buckworth, Rik C., Newman, Stephen J., Ovenden, Jennifer R., Broderick, Damien, Kravchuck, Olena, Ballagh, Aaron, and Welch, David J. (2010) The stock structure of grey mackerel Scomberomorus semifasciatus in Australia as inferred from its parasite fauna. Fisheries Research, 101 (1-2). pp. 94-99.

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Abstract

The scombrid Scomberomorus semifasciatus is an important component of inshore fisheries in tropical Australia. Data on the parasite fauna of 593 fish from areas off northern and eastern Australia were examined for evidence of discrete fish populations. The parasites used were juveniles of Pterobothrium pearsoni, Callitetrarhynchus gracilis, Anisakis simplex (sensu latu) and Terranova sp. Tukey Kramer pairwise comparisons gave significant differences in the abundances of two or more parasites between fish from the east coast, the eastern Gulf of Carpentaria and the remainder of northern Australia. Multivariate analysis gave further evidence of differences and the results suggest that at least 4 populations or stocks of grey mackerel occur along the northern and eastern coastline of Australia.

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