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Stomach Contents of the Blue Shark (Prionace Glauca L.) Off South-West England

  • J. D. Stevens (a1)
Extract

The blue shark is a pelagic species having a virtually circumglobal distribution in tropical and temperate seas. In the northern hemisphere, during the warmer months, they extend their range northwards in both the Pacific and Atlantic (Strasburg, 1959; Bigelow & Schroeder, 1948; Templeman, 1963). Between May and October they occur regularly and in considerable numbers around the south-west peninsula of England. Strasburg showed that in the central Pacific blue sharks are opportunistic feeders as were the other pelagic species he studied, their diet consisting mainly of squid and small fish. Bigelow & Schroeder suppose herring (Clupea harengus L.), mackerel ((Scomber scombrus L.), sardines (Sardina pilchardus Walbaum) and a variety of cephalopods to be the chief diet in northern waters, together with Squalus acanthias L. and various bottom fish on the fishing banks. In warmer waters anchovies (Engraulis encrasicolus L.), flying fish and the occasional sea bird caught resting on the water are known to occur in their diet. Bigelow & Schroeder also quote the well-known stories of blue shark following boats for offal and feeding on the carcasses of harpooned whales. Le Brasseur (1964) examined the diet of blue sharks caught by gill net in the Gulf of Alaska and in general confirmed Strasburg's observations. However, he stated that when salmon (Oncorhynchus sp.) were available in gill nets blue shark might selectively feed on them, while by-passing other readily available species occurring in their normal diet. Couch (1862) examined the stomachs of two specimens from Cornish waters, finding herring, mackerel and garfish (Belone belone L.), as well as Squalus and Conger conger L. Lo Bianco (1909) found anchovies and cephalopods in one of two specimens caught in the Bay of Naples, the other of which contained large numbers of flying-fish eggs (Exocoetus sp.).

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References
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Bigelow H. B. & Schroeder W. C., 1948. Fishes of the western North Atlantic Pt. 1 (sharks). Memoirs. Sears Foundation for Marine Research, 1, 59576.
Budker P., 1971. The Life of Sharks (revised and translated from the French), viii, 222 pp. London: Weidenfeld & Nicolson.
Carey F. G. & Teal J. M., 1969. Mako and Porbeagle: warm bodied sharks. Comparative Biochemistry and Physiology, 28 (1), 199204.
Caunter J. A. L., 1961. Shark Angling in Great Britain. Angling Times series. London: G. Allen and Unwin Ltd.
Clarke M. R. & Merrett N., 1972. The significance of squid, whale and other remains from the stomachs of bottom-living deep-sea fish’. Journal of the Marine Biological Association of the United Kingdom, 52, 599603.
Couch J., 1862. A History of the Fishes of the British Islands, 1, 2836, 41–4. London: Groom-bridge & Sons.
Day F., 1880. The Fishes of Great Britain and Ireland, 2, 297–9. London: Williams & Norgate.
Gudger E. W., 1949. Natural history notes on Tiger sharks, Galeocardo tigrinus, caught at Key West, Florida, with emphasis on food and feeding habits. Copeia, 1, 3947.
Le Brasseur R. J., 1964. Stomach contents of the blue shark taken in the Gulf of Alaska. Journal of the Fisheries Research Board of Canada, 21 (4), 861–2.
Lo Bianco S., 1909. Notizie biologiche riguardanti specialmente il periodo di maturita sessuale degli animali del golfo di Napoli. Mittheilungen aus der Zoologischen Station zu Neapel, 19, 666–7.
Mcintosh W. C., 1902. Notes from the Gatty Marine Laboratory - St Andrews. Annals and Magazine of Natural History, series 7, 10, 254.
Strasburg D. W., 1959. Distribution, abundance and habits of pelagic sharks in the central Pacific. Fishery Bulletin. Fish and Wildlife Service. United States Department of Interior, 58 (138)> 335361.
Templeman W., 1963. Distribution of sharks in The Canadian Atlantic (with special reference to Newfoundland Waters). Bulletin. Fisheries Research Board of Canada, 140, 177.
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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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