Trawling Operations and South African (Cape) Fur Seals, Arctocephalus pusillus pusillus

Wickens, Patti A. and Sims, Peter F. (1994) Trawling Operations and South African (Cape) Fur Seals, Arctocephalus pusillus pusillus. Marine Fisheries Review, 56(3), pp. 1-12.

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Official URL: http://spo.nmfs.noaa.gov/mfr563/mfr5631.pdf

Abstract

South African (Cape) fur seals, Arctocephalus pusillus pusillus, interact with the South African trawl fisheries-offshore demersal, inshore demersal, and midwater fisheries. These interactions take thef ollowing forms: Seals take or damage netted fish, on particular vessels they become caught in the propeller, seals drown in the nets, live seals come aboard and may be killed. Except in specific cases of seals damaging particular trawler propellers, interactions result in little cost to the offshore and midwater trawl fisheries. For the inshore fishery, seals damage fish in the net at an estimated cost in excess of R69, 728 (US$18,827) per year, but this is negligible (0.3%) in terms ofthe value of the fishery. Seal mortality is mainly caused by drowning in trawl nets and ranges from 2,524 to 3,636 seals of both sexes per year. Between 312 and 567 seals are deliberately killed annually, but this most likely takes place only when caught and they enter the area below deck, where they are difficult to remove, and pose a potential threat to crew safety. Overall, seal mortality during trawling operations is negligible (0.4-0.6%) in terms of the feeding population of seals in South Africa.

Item Type: Article
Title: Trawling Operations and South African (Cape) Fur Seals, Arctocephalus pusillus pusillus
Personal Creator/Author:
CreatorsEmail
Wickens, Patti A.
Sims, Peter F.
Refereed: Yes
Journal or Publication Title: Marine Fisheries Review
Volume: 56
Number: 3
Page Range: pp. 1-12
Date: 1994
ISSN: 0090-1830
Issuing Agency: United States National Marine Fisheries Service
Subjects: Conservation
Fisheries
Management
Item ID: 9849
Depositing User: Patti M. Marraro
Date Deposited: 16 Aug 2012 14:32
Last Modified: 16 Aug 2012 14:32
URI: http://aquaticcommons.org/id/eprint/9849

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