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Size data and stomach contents of common dolphins, Delphinus delphis, near Plymouth

Published online by Cambridge University Press:  11 May 2009

P. L. Pascoe
Affiliation:
The Laboratory, Marine Biological Association, Citadel Hill, Plymouth PL1 2PB

Introduction

The laboratory at Plymouth was notified of the capture of five dolphins in a commercial trawl on 9 December 1982, three of the specimens were living and therefore immediately released. The remaining two were brought to the laboratory, identified as Delphinus delphis Linnaeus, 1758, their size and sex were recorded and the stomachs removed for examination of their contents. The exact location of capture was not recorded, but is known to be within 40 miles of Plymouth.

Reports of strandings of D. delphis collected by the British Museum (Natural History), (Harmer, 1914–27; Fraser, 1934, 1946, 1953, 1974) and more recent recorded sightings (Evans, 1980) show that the common dolphin is clearly not rare in British waters. Although the species has been recorded off all British coasts, sightings and strandings are concentrated off the south and south-west coasts of Britain and Ireland. The variation in their numbers and distribution both during this century and on a seasonal basis each year has been accounted for mainly by the fluctuation and movement of their food supply (Evans, 1980; Sheldrick, 1976).

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1986

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References

REFERENCES

Cadenat, J., 1959. Rapport sur les petits Cetacés ouest-africains. Résultats des recherches entreprises sur ces animaux jusquian mois de Mars 1959. Bulletin de l' lnstitut francaise d'Afrique Noire (sér. A), 21, 13671440.Google Scholar
Clarke, M. R., 1985 a. Cephalopods in the diet of Cetaceans and seals. Rapport. Commission Internationale pour la Mer Mediterranée, in press.Google Scholar
Clarke, M. R., 1985 b. Cephalopods in the diet of odontocetes. In Research on Dolphins (ed. Bryden, M. M. and Harrison, R.), Oxford University Press.(In press.)Google Scholar
Evans, P. G. H., 1980. Cetaceans in British waters. Mammal Review, 10, 152.CrossRefGoogle Scholar
Fiscus, C. H. & Niggol, K., 1965. Observation of cetaceans off California, Oregon and Washington. Special Scientific Report. United States Department of the Interior, Fish and Wildlife Service (Fisheries), no. 498, 27– pp.Google Scholar
Fitch, J. E. & Brownell, R. L. Jr., 1968. Fish otoliths in cetacean stomachs and their importance in interpreting feeding habits. Journal of the Fisheries Research Board of Canada, 25, 25612574.Google Scholar
Fraser, F. C., 1934. Report of the Cetacea Stranded on the British Coasts from 1927 to 1932, no. 11. London: British Museum (Natural History).Google Scholar
Fraser, F. C., 1946. Report of the Cetacea Stranded on the British Coasts from 1933 to 1937, no.12. London: British Museum (Natural History).Google Scholar
Fraser, F. C., 1953. Report of the Cetacea Stranded on the British Coasts from 1938 to 1947, no. 13. London: British Museum (Natural History).Google Scholar
Fraser, F. C., 1974. Report of the Cetacea Stranded on the British Coasts from 1948 to 1966, no. 14. London: British Museum (Natural History).Google Scholar
Harmer, S. F., 19141927. Reports on Cetacea Stranded on the British Coasts, nos. 1–10. London: British Museum (Natural History).Google Scholar
Schmidt, J., 1923. Consumption offish by porpoises. Nature, London, 112, 902.Google Scholar
Sheldrick, M. C., 1976. Trends in the strandings of Cetacea on the British coasts. Mammal Review, 6, 1523.CrossRefGoogle Scholar
Watson, L., 1981. Sea Guide to Whales of the World. London: Hutchinson.Google Scholar