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Further results from a tagging study of pelagic sharks in the north-east Atlantic

Abstract

A further 69 recaptures are reported from a tagging study of pelagic sharks initiated in 1970 in the north-east Atlantic. Galeorhinus galeus tagged in England were recaptured in the eastern Atlantic from southern Spain to north-west of Iceland. Among the 42 G. galeus recaptured the longest time at liberty was about 12 years and the greatest distance travelled was 2461 km. Among the 21 Prionace glauca recaptured the l ongest time at liberty was 10.7 years, and seven sharks moved distances between 4362 and 7176 km. One shark tagged in south-west England was recaptured in the South Atlantic off South America. An Isurus oxyrinchus was at liberty for 4–6 years and a Lamna nasus for up to about 13 years. Lamna nasus were recaptured from northern Norway to northern Spain. The growth rates of the tagged sharks were close to the predicted values for G. galeus, were slower for P. glauca and faster for L. nasus.

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S.R. Davenport & J.D. Stevens , 1988. Age and growth of two commercially important sharks (Carcharhinus tilstoni and C. sorrah) from northern Australia. Australian Journal of Marine and Freshwater Research, 39,417–33.

M.J. Holden & R.G. Horrod , 1979. The migrations of tope, Galeorhinus galeus (L.), in the eastern North Atlantic as determined by tagging. Journal du Conseil, 38, 314317.

H.L. Pratt & J.G. Casey , 1983. Age and growth of the shortfin mako, Isurus oxyrinchus, using four methods. Canadian Journal of Fisheries and Aquatic Sciences, 40,19441957.

J.D. Stevens , 1984. Biological observations on sharks caught by sport fishermen off New South Wales. Australian Journal of Marine and Freshwater Research, 35,573590.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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