Trends and Potential Interactions Between Pinnipeds and Fisheries of New England and the U.S. West Coast

Baraff, Lisa S. and Loughlin, Thomas R. (2000) Trends and Potential Interactions Between Pinnipeds and Fisheries of New England and the U.S. West Coast. Marine Fisheries Review, 62(4), pp. 1-39.

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (2819Kb) | Preview
Official URL: http://spo.nwr.noaa.gov/mfr624/mfr6241.pdf

Abstract

Long-term trends in the abundance and distribution of several pinniped species and commercially important fisheries of New England and the contiguous U.S. west coast are reviewed, and their actual and potential interactions discussed. Emphasis is on biological interactions or competition. The pinnipeds include the western North Atlantic stock of harbor seals, Phoca vitulina concolor; western North Atlantic gray seals, Halochoerus grypus; the U.S. stock of California sea lions, Zalophus californianus californianus; the eastern stock of Steller sea lions, Eumetopias jubatus; and Pacific harbor seals, Phoca vitulina richardii. Fisheries included are those for Atlantic cod, Gadus morhua; silver hake, Merluccius bilinearis; Atlantic herring, Clupea harengus; the coastal stock of Pacific whiting, Merluccius productus; market squid, Loligo opalescens; northern anchovy, Engraulis mordax; Pacific her-ring, Clupea pallasi; and Pacific sardine, Sardinops sagax. Most of these pinniped populations have grown exponentially since passage of the U.S. Marine Mammal Protection Act in 1972. They exploit a broad prey assemblage that includes several commercially valuable species. Direct competition with fisheries is therefore possible, as is competition for the prey of commercially valuable fish. The expanding pinniped populations, fluctuations in commercial fish biomass, and level of exploitation by the fisheries may affect this potential for competition. Concerns over pinnipeds impacting fisheries (especially those with localized spawning stocks or at low biomass levels) are more prevalent than concerns over fisheries’ impacts on pinnipeds. This review provides a framework to further evaluate potential biological interactions between these pinniped populations and the commercial fisheries with which they occur.

Item Type: Article
Title: Trends and Potential Interactions Between Pinnipeds and Fisheries of New England and the U.S. West Coast
Personal Creator/Author:
CreatorsEmail
Baraff, Lisa S.
Loughlin, Thomas R.
Refereed: Yes
Journal or Publication Title: Marine Fisheries Review
Volume: 62
Number: 4
Page Range: pp. 1-39
Date: 2000
ISSN: 0090-1830
Issuing Agency: United States National Marine Fisheries Service
Subjects: Conservation
Fisheries
Management
Item ID: 9763
Depositing User: Patti M. Marraro
Date Deposited: 16 Aug 2012 14:33
Last Modified: 16 Aug 2012 14:33
URI: http://aquaticcommons.org/id/eprint/9763

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...