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On the Status of the Deep-Sea Echinoids, Echinosigra Phiale and E. Paradoxa

Published online by Cambridge University Press:  11 May 2009

J. D. Gage
J. D. Gage
Affiliation:
Dunstaffhage Marine Research Laboratory, Scottish Marine Biological Association, P.O. Box 3, Oban, Argyll, PA AD
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Extract

Variation in morphological characters seen in a large collection of specimens of the genus Echinosigra from the Rockall Trough can be arranged in a continuous ontological series. This growth series embodied forms agreeing with Mortensen's (1907) descriptions of both E. phiale and E. paradoxa. Bivariate biometrical study showed a well-defined allometric relationship of test length to other body dimensions, particularly the width of the ‘head’ and the width and height of the ‘body’. Immature specimens corresponded to E. phiale whilst the typically elongated ‘neck’ of adults corresponding to E. paradoxa was developed, along with the opening of the genital pores, at around a test length of 20–24 mm.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 64 , Issue 1 , February 1984 , pp. 157 - 170
Copyright
Copyright © Marine Biological Association of the United Kingdom 1984

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References

Agassiz, A. N. 1881. Report on the Echinoidea dredged by H.M.S. Challenger during the years 1873–1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger 1873–1876, 3 (9), 321 pp.Google Scholar
David, B. 1983. Isolement géographique de populations benthiques abyssale: les Pourtalesia jeffreysi (Echinoidea, Holoasteroidea) en Mer de Norvège. Oceanologica acta, 6, 13–20.Google Scholar
Gage, J. D. & Tyler, P. A. 1982. Growth strategies in deep-sea ophiuroids. In Echinoderms. Proceedings of the International Conference, Tampa Bay (ed. J. M. Lawrence,) pp. 305–311. Rotterdam: A. A. Balkema.Google Scholar
Grieg, J. A. 1921. Echinodermata. Report on the Scientific Results of the ‘Michael Sars’ North Atlantic Deep Sea Expedition, 1910, 3 (1), 47 pp.Google Scholar
Hessler, R. R. & Sanders, H. L. 1967. Faunal diversity in the deepsea. Deep-Sea Research, 16, 157–170.Google Scholar
Mironov, A. N. 1974a, Pourtalesiid sea urchins of the Antarctic and Subantarctic (Echinoidea: Pourtalesiidae). Trudy Instituta okeanologii, 98, 240–252. [In Russian, with English summary.]Google Scholar
Mironov, A. N. 1974b. New species of abyssal sea urchins of the genus Echinosigra (Echinoidea, Pourtalesiidae). Zoologicheskiě zhurnal, 53, 1803–1806. [In Russian, with English summary.]Google Scholar
Mironov, A. N. 1978. Meridosternin echinoids (Echinoidea: Meridosternina) collected during the 16th cruise of the R/V ‘D. M. Mendeleyev’. Trudy Instituta okeanologii, 113, 208–226. [In Russian, English summary.]Google Scholar
Mortensen, T. 1907. Echinoidea (Part II). Danish Ingolf-Expedition, 4 (2), 200 pp.Google Scholar
Mortensen, T. 1909. Die Echinoiden der Deutschen Südpolar-Expedition 1901–1903. Deutsche Südpolar-Expedition, 11 (Zoologie III), 1–113.Google Scholar
Mortensen, T. 1927. Handbook of the Echinoderms of the British Isles. 471 pp. Oxford University Press.Google Scholar
Mortensen, T. 1950. A Monograph of the Echinoidea, vol. 5, pt. 1. 432 pp. Copenhagen: C. A. Reitzel.Google Scholar
Rokop, F. J. 1975. Breeding Patterns in The Deep Sea. Unpublished dissertation, University of California, San Diego.Google Scholar
Rokop, F. J. 1979. Year round reproduction in the deep sea bivalve molluscs. In Reproductive Ecology of Marine Invertebrates (ed. S. E. Stancyk,) p. 189–198. Columbia: University of South Carolina Press.Google Scholar
Thomson, W. 1874. On the Echinoidea of the ‘Porcupine’ deep-sea dredging-expeditions. Philosophical Transactions of the Royal Society, 164, 719–756.Google Scholar