Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-05T13:32:38.637Z Has data issue: false hasContentIssue false
  • English
  • Français

On the Biology of Calanus finmarchicus, I. Reproduction and Seasonal Distribution in the Clyde Sea-Area during 1932

Published online by Cambridge University Press:  11 May 2009

A. G. Nicholls
A. G. Nicholls
Affiliation:
Assistant Naturalist, Marine Station, Millporl.
Get access Rights & Permissions [Opens in a new window]

Extract

1. Fortnightly samples were taken with a fine-meshed net in single vertical hauls at different positions in the Clyde Sea-Area.

2. Each stage of Calanus present, from ovum to adult, was counted, and charts were constructed expressing these results for one year as total numbers and as percentage composition.

3. Calanus passes the autumn and early winter mainly in its Stage V copepodite form.

4. In general, total numbers were high in September, 1931, and fell steadily to a minimum in March; in Loch Fyne the minimum occurred i n April.

5. A sudden increase was observed in May and numbers rose to maximal values; the decline also was sudden.

6. Reproduction began in February and three plainly marked breeding periods were observed between February and July.

7. The time taken by the egg in developing into the adult was four weeks.

8. The total life of a Calanus during the summer was estimated to be about two and a half months; in winter it is five to six months.

9. In Loch Fyne a noticeable lag occurred during the winter and early spring.

10. The number of Calanus present in the autumn of 1932 was considerably less than.at the same time in 1931. This may have been due to a shortage of food.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 19 , Issue 1 , August 1933 , pp. 83 - 107
Copyright
Copyright © Marine Biological Association of the United Kingdom 1933

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bigelow, H. B. 1926. Plankton of the Offshore Waters of the Gulf of Maine. Bull. Bureau of Fisheries, Vol. XL, pp. 1–509.Google Scholar
Cunningham, C. M. 1907. Report on the Drift of the Irish Sea. Fisheries, Ireland, Sci. Invest., Vol. VII (1909).Google Scholar
Damas, D. 1905. Notes Biologiques sur les Copépodes de la Mer Norvégienne. Cons. Perm. Int. p. l'Explor. de la Mer, Publ. de Circ, No. 22.Google Scholar
Farran, G. P. 1911. Copepoda. Cons. Perm. Int. p. l'Explor. de la Mer, Bull. Trimest. Part II.Google Scholar
Farran, G. P. 1927. The Reproduction of Calanus finmarchicus off the South Coast of Ireland. Cons. Perm. Int. p. l'Explor. de la Mer, Joum. du Cons., Vol. II, pp. 132–143.CrossRefGoogle Scholar
Gardiner, A. C. 1931. The Validity of Single Vertical Hauls of the International Net in the Study of the Distribution of the Plankton. Journ. Mar. Biol. Assoc, N.S., Vol. XVII, pp. 449–472.Google Scholar
Grobben, C. 1881. Die Entwicklungsgeschichte von Cetochilus septentrionalis (Goodsir). Arbeit, aus dem Zool. Inst. der Univ. Wien, Vol. III, Part 3.Google Scholar
Lebour, M. V. 1916. Stages in the Life History of Calanus finmarchicus (Gunnerus), Experimentally Reared by Mr. L. R. Crawshay in the Plymouth Laboratory. Journ. Mar. Biol. Assoc, N.S., Vol. XI, pp. 1–17.Google Scholar
Marshall, S. M., and Orr, A. P. 1927. The Relation of the Plankton to some Chemical and Physical Factors in the Clyde Sea Area. Journ. Mar. Biol. Assoc, N.S., Vol. XIV, pp. 837–868.Google Scholar
Marshall, S. M., and Orr, A. P. 1930. A Study of the Spring Diatom Increase in Loch Striven. Journ. Mar. Biol. Assoc, N.S., Vol. XVI, pp. 853–878.Google Scholar
Mill, H. R. 1889–1891. The Clyde Sea Area. Trans. Roy. Soc, Edin., Vol. 37.Google Scholar
Ostenfeld, C. H., and Jespersen, P. 1924. Standard Net for Plankton Collections. Cons. Perm. Int. p. l'Explor. de la Mer, Publ. de Circ, No. 84, pp. 1–16.Google Scholar
Paulsen, O. 1906. Studies on the Biology of Calanus finmarchicusn in the Waters round Iceland. Medd. f. Komm. f. Havunders., Ser. Plankton; Bd. I, No. 4, pp. 1–21.Google Scholar
Russell, F. S. 1925. The Vertical Distribution of Marine Macro-plankton. An Observation on Diurnal Changes. Journ. Mar. Biol. Assoc, N.S., Vol. XIII, pp. 769–809.Google Scholar
Russell, F. S. 1928. The Vertical Distribution of Marine Macro-plankton. VII. Observations on the Behaviour of Calanus finmarchicus. Journ. Mar. Biol. Assoc, N.S., Vol. XV, pp.429–454.Google Scholar
Ruud, J. T. 1929. On the Biology of Copepods off Möre, 1925–1927. Cons. Perm. Int. p. l'Explor. de la Mer, Rapp. et Proc. Verb., Vol. LVI.Google Scholar
Sömme, I. D. 1933. A Possible Relation between the Production of Animal Plankton and the Current-System of the Sea. American Naturalist, Vol. LXVII, pp. 30–52.CrossRefGoogle Scholar