Skip to main content Accessibility help
×
×
Home

The Biology of Echinocardium cordatum

  • Hilary B. Moore (a1)
Extract

1. Monthly samples of Echinocardium cordatum were taken at Port Erin in 1932,1933 and 1934, and at intervals at Fairlie Sands in the Clyde.

2. Growth is continuous throughout the year with the exception of February-March. In their first winter the young urchins attain a length of about 10 mm. at Millport and 15–20 mm. at Port Erin. In their second winter they are about 20 mm. at Millport, and 30–35 mm. at Port Erin.

4. The year 1931 was cold and produced a very small brood of young urchins; 1932 and 1933 were warm years and produced very large broods.

5. The young settle below low water and migrate into the interval zone after an interval of four to twelve months.

6. The gonads of the young urchins mature in their second year. Spawning takes place in June–July–August.

7. The nutritive bodies in the ovaries are shown to be derived from the disintegration of relict ova.

Copyright
References
Hide All
Bruce, J. R. 1928. Physical Factors on the Sandy Beach. Pt. 1. Tidal, Climatic and Edaphic. Journ. Mar. Biol. Assoc., N.S., Vol. XV, pp. 535552.
Elmhirst, R. E. 1923. Notes on the Breeding and Growth of Marine Animals in the Clyde Sea Area. Scott. Mar. Biol. Assoc. Ann. Rept. for the year 1922, pp. 1943.
Marine Biological Association. 1931. Plymouth Marine Fauna.
Miller, R. A., and Smith, H. B. 1931. Observations on the Formation of the Egg of Echinometra lucunter. Papers from Tortugas Lab., Carnegie List., Washington, Vol. XXVII, pp. 1105.
Moore, H. B. 1933. A Comparison of the Sand Fauna of Port Erin Bay in 1900 and in 1933. Proc. Malac. Soc., Vol. XX, Pt. VI, pp. 285294.
Moore, H. B. 1935. A Comparison of the Biology of Echinus esculentus in different Habitats. Pt. II. Journ. Mar. Biol. Assoc., N.S., Vol. XX, pp. 109128.
Pirrie, M., Bruce, J. R., and Moore, H. B. 1932. A Quantitative Study of the Fauna of the Sandy Beach at Port Erin. Journ. Mar. Biol. Assoc., N.S., Vol. XVIII, pp. 279296.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

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
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed