Basking Shark
نویسندگان
چکیده
منابع مشابه
Transatlantic migration and deep mid-ocean diving by basking shark.
Despite being the second largest fish, basking sharks (Cetorhinus maximus) have been assumed to remain in discrete populations. Their known distribution encompasses temperate continental shelf areas, yet until now there has been no evidence for migration across oceans or between hemispheres. Here we present results on the tracks and behaviour of two basking sharks tagged off the British Isles, ...
متن کاملLow worldwide genetic diversity in the basking shark (Cetorhinus maximus).
The basking shark (Cetorhinus maximus) is found in temperate waters throughout the world's oceans, and has been subjected to extensive exploitation in some regions. However, little is known about its current abundance and genetic status. Here, we investigate the diversity of the mitochondrial DNA control region among samples from the western North Atlantic, eastern North Atlantic, Mediterranean...
متن کاملBasking to attention
With growing concern about the prospects of many marine species, a report earlier this summer highlighted the plight of pelagic, open ocean sharks, which are increasingly under threat. The International Union for the Conservation of Nature (IUCN) shark specialist group reported that 32 per cent of 64 species of open-sea sharks and rays are under threat of extinction. “Despite mounting threats, ...
متن کاملSieving a living: a review of the biology, ecology and conservation status of the plankton-feeding basking shark Cetorhinus maximus.
The basking shark Cetorhinus maximus is the world's second largest fish reaching lengths up to 12 m and weighing up to 4 tonnes. It inhabits warm-temperate to boreal waters circumglobally and has been the subject of fisheries exploitation for at least 200 years. There is current concern over its population levels as a consequence of directed harpoon and net fisheries that in the north-east Atla...
متن کاملConservation Genetics of Basking Sharks
Acknowledgements: The authors wish to thank the following for their help and assistance at various stages during the fieldwork, data analysis and report writing:Deitsch and the Shark Trust for the use of the basking shark photograph (front cover). We should also like to thank D. all of whom have kindly supplied us with basking shark tissue samples. This publication (excluding the logo) may be r...
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ژورنال
عنوان ژورنال: Nature
سال: 1877
ISSN: 0028-0836,1476-4687
DOI: 10.1038/016061c0