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A note on the breeding season, sex ratio and embryonic development of the dogfish Scyliorhinus canicula (L.)

Published online by Cambridge University Press:  11 May 2009

John E. Harris
John E. Harris
Affiliation:
Department of Zoology, University of Bristol
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Extract

Records of nearly 2000 dogfish collected from the Ilfracombe region suggest that the spawning season of this fish starts in November and continues at least until July. This area probably represents a spawning ground into which the females migrate during the spawning season; the males follow them much later in April and May.

Figures are given to show the time taken at different temperatures for the embryo to develop to a series of definite morphological stages; these suggest that the temperature characteristic of the development (µ = 20,000) is substantially the same as for several teleost species.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 31 , Issue 2 , October 1952 , pp. 269 - 275
Copyright
Copyright © Marine Biological Association of the United Kingdom 1952

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References

REFERENCES

Barnes, T. C, 1937. Textbook of General Physiology. (Appendix. Index to Temperature Characteristics). 554 pp. Philadelphia.Google Scholar
Clark, R. S., 1922. Rays and skates (Raiae). No. 1. Egg-capsules and young. Journ. Mar. Biol. Assoc, Vol. 12, pp. 577–643.CrossRefGoogle Scholar
Ford, E. 1921. A contribution to our knowledge of the life histories of the dogfishes landed at Plymouth. Journ. Mar. Biol. Assoc, Vol. 12, pp. 468–505.CrossRefGoogle Scholar
Lloyd, A. J., 1941. The marine fish fauna of the southern shores of the Bristol Channel. Proc. Bristol Nat. Hist. Soc., Vol. 9, pp. 202–30.Google Scholar
Lloyd, A. J. 1942. A survey of the fishing industry at Weston-super-Mare during the winter 1940–41. Proc. Bristol Nat. Hist. Soc, Vol. 9, pp. 316–27.Google Scholar
Metten, H., 1939. Studies on the reproduction of the dogfish. Phil. Trans. Roy. Soc, B, Vol. 230, pp. 217–38.Google Scholar
Scammon, R. E., 1911. Normentafeln zur Entwicklungsgeschichte der Wirbeltiere. 12. Normal plates of the development of Squalus acanthias. 140 pp. Jena.Google Scholar