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Do dietary changes of Australasian gannets (Morus serrator) reflect variability in pelagic fish stocks?

journal contribution
posted on 2004-01-01, 00:00 authored by Ashley Bunce
The relationship between changes in the diet of Australasian gannets (Morus serrator) and commercial fisheries landings was investigated. The contribution of pilchard (Sardinops sagax) to the diet of gannets was significantly related to the commercial catch of that species, suggesting that changes in the relative proportion of pilchard in the diet of gannets may be a useful index of pilchard abundance and availability. Equivalent relationships, however, were not found for other common prey species in the gannet diet. It is considered that the abundance of important prey items in the gannet diet, such as pilchards, and commercial landings are proportional to stock abundance. The implications of this relationship for fisheries management are examined.

History

Journal

Wildlife research

Volume

31

Issue

4

Pagination

383 - 387

Publisher

Commonwealth Scientific and Industrial Research Organisation with the cooperation of the Australian Academy of Science

Location

East Melbourne, Vic.

ISSN

1035-3712

eISSN

1448-5494

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2004, CSIRO

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