Hostname: page-component-76fb5796d-vvkck Total loading time: 0 Render date: 2024-04-26T15:38:53.141Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations on the Biology and Post-Embryonic Development of Idotea Viridis (Slabber) (Isopoda, Valvifera) from New England Creek, South-East Essex

Published online by Cambridge University Press:  11 May 2009

N. H. Howes
N. H. Howes
Affiliation:
Department of Zoology and Comparative Anatomy, University College, University of London
Get access Rights & Permissions [Opens in a new window]

Extract

A local race of Idotea viridis from south-east Essex is described and its classification as /. viridis discussed. This animal is a nektonic form and so far has only been found in New England Creek in south-east Essex. The biology and post-embryonic development of this race is described. Quantitative samples were taken of the animals present in the creek in 1934, 1935 and 1936. I. viridis was rare in the first five months of the year; numbers rose to a maximum in late June and July and remained comparatively high until the end of October.

The number of young in the brood pouch is very variable. There is some evidence that the number of fertilized eggs was reduced by the expulsion of embryos before their development was complete. The newly hatched I viridisis described.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 23 , Issue 2 , May 1939 , pp. 279 - 310
Copyright
Copyright © Marine Biological Association of the United Kingdom 1939

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

Bate, C. S. & Westwood, J. O., 1868. A History of the British Sessile-eyed Crustacea, Vol. II. London.Google Scholar
Calman, W. T., 1909. Lankester's A Treatise on Zoology, Part VII, Crustacea. London.Google Scholar
Collinge, W. E., 1917. A revision of the British Idoteidae. Trans. Roy. Soc. Edinb., Vol. LI, pp. 721–60.CrossRefGoogle Scholar
Collinge, W. E., 1918. Oral appendages of marine Isopoda. Journ. Linn. Soc., Vol. 34, pp. 65–93.Google Scholar
Hansen, H. J., 1925. Studies on the Arthropoda, Vol. II. Copenhagen.Google Scholar
Hartley, P. H. T. & Spooner, G. M., 1938. The ecology of the Tamar Estuary. I. Introduction. Journ. Mar. Biol. Assoc., Vol. XXII, pp. 501–8.CrossRefGoogle Scholar
Howes, N. H., 1939. The ecology of a saline lagoon in South-east Essex. Journ. Linn. Soc., Vol. XL, pp. 383–445.Google Scholar
Huxley, J. S., 1932. Problems of Relative Growth. London.Google Scholar
Huxley, J. S. & Teissier, G., 1936. Terminology of relative growth. Nature, Vol. 137, p. 780.CrossRefGoogle Scholar
Jackson, H. G., 1926. The morphology of the isopod head. Part 1. Proc. Zool. Soc. Lond., pp. 885–911.CrossRefGoogle Scholar
Jancke, O., 1924. Die Brutpflege einiger Malakostraken. Zool. Anz., Bd. LVIII, pp. 273–8.Google Scholar
Needham, A. E., 1937. Relative Growth in Asellus aquaticus. Proc. Zool. Soc. Lond. A, pp. 289–313.Google Scholar
Przibram, H.J., 1931. Connecting Laws in Animal Morphology. University of London Press.Google Scholar
Sars, G. O., 1899. An Account of the Crustacea of Norway, Vol. II, Isopoda. Bergen.Google Scholar
Schellenberg, A., 1938. Alters-, Geschlechts- und Individualunterschiede des Amphipoden Niphargus tatrensis. Zool. Jahrb., Abt. I (Systematik), Bd. 71, pp. 191–202.Google Scholar
Scourfield, D. J., 1896. Olfactory Setae of Cladocera. Journ. Quekett Micr. Club, Ser. 2, Vol. 6, pp. 280–8.Google Scholar
Scourfield, D. J., 1905. Die sogenannten “Riechstäbchen” bei den Cladoceren. ForschBer. Biol. Sta. Plön, Bd. 12, pp. 340–53.Google Scholar
Tattersall, W. M., 1906. Isopoda. The Marine Fauna of the Coast of Ireland. V. Rep. Sea Inl. Fish. Ireland for 1904, Part II, Appendix No. II.Google Scholar
Zimmer, C., 1927. Isopoda, in Kükenthal, W. & Krumbach, T., Handbuch der Zoologie Bd. 3. Berlin.Google Scholar