movement of blue shark, prionace glauca , in the north-east atlantic based on mark–recapture data
a shark tagging programme along the portuguese coast was initiated in 2001 in collaboration with the national marine fisheries service. from a total of 168 blue sharks ( prionace glauca ) tagged, 34 sharks were recaptured (20% return rate) providing important information on this species' moveme...
| Published in: | Journal of the Marine Biological Association of the United Kingdom |
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| Main Authors: | , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
2005
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0025315405012154 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315405012154 |
| Summary: | a shark tagging programme along the portuguese coast was initiated in 2001 in collaboration with the national marine fisheries service. from a total of 168 blue sharks ( prionace glauca ) tagged, 34 sharks were recaptured (20% return rate) providing important information on this species' movement patterns for the area. a total of 28 sharks travelled less than 1000 km while at liberty for time periods ranging from 22 to 1294 days. the remaining fish travelled long distances to north-west africa, central atlantic and the bay of biscay. only one shark made a transatlantic migration, being recaptured 3187 km from the tagging site. north–south movements seem to be related to seasonal sea-surface temperature variation in the north-east atlantic. seasonal segregation of different life stages also occurs. |
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