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A preliminary assessment of the frequency, distribution and causes of mortality of beach cast cetaceans in the Sultanate of Oman, January 1999 to February 2002. Scientific Committee document SC/54/O4, International Whaling Commission, 26 April-10 May 2002, Shimonoseki, Japan
Collins, T.; Minton, G.; Baldwin, R.; Van Waerebeek, K.; Hywel Davies, A.; Cockcroft, V. (2002). A preliminary assessment of the frequency, distribution and causes of mortality of beach cast cetaceans in the Sultanate of Oman, January 1999 to February 2002. Scientific Committee document SC/54/O4, International Whaling Commission, 26 April-10 May 2002, Shimonoseki, Japan. International Whaling Commission: Shimonoseki. 13 pp.
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| Trefwoord |
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| Author keywords |
Oman, Indian Ocean, Beach survey, Strandings, Incidental catches, Fisheries, Gillnets |
| Auteurs | | Top |
- Collins, T.
- Minton, G.
- Baldwin, R.
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- Van Waerebeek, K.
- Hywel Davies, A.
- Cockcroft, V.
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| Abstract |
Data are presented on beach cast cetaceans recorded in central and southern Oman between January 1999 and February 2000 during systematic beach surveys. Crude encounter rates of cetacean specimens are comparable with previous published data and indicate relatively high levels of mortality of Tursiops sp. and Sousa plumbea. Over two-thirds of specimens are recorded as stranding state V with cause of mortality unknown. Of the remaining specimens, empirical and circumstantial evidence for cause of death is suggestive of interactions with fisheries activities in the majority of cases. Direct evidence of interactions between cetaceans and fisheries, including information on incidental catch, is also presented. Other possible causes of mortality are hypothesised. Two mass strandings of small cetaceans are also discussed. Given the high numbers (725 records) and diversity (18 spp.) of beach cast cetaceans recorded in Oman, and the value of specimens to scientific study and conservation and fisheries management, recommendations are made to expand the scope of research and application of data. |
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