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On the ecology of a dense bed of the brittle-star Ophiothrix fragilis

  • G. F. Warner (a1)
Abstract

INTRODUCTION

The occurrence of dense beds of the brittle-star Ophiothrix fragilis (Abildgaard) in certain localized areas around the British Isles has been reported by several authors (Allen, 1899; Vevers, 1952; Cabioch, 1961; Holme, 1961; Brun, 1969), with population densities varying from 340/m2 (Vevers, 1952) to 2196/m2 (Brun, 1969). These populations seem to be permanent features of the sea bed since the aggregation sampled by Allen was in the same position as that photographed by Vevers fifty years later.

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Brun E., 1969. Aggregation of Ophiothrix fragilis (Abildgaard) (Echinodermata: Ophiuroidea). Nytt Mag. Zool., Vol. 17 pp. 153–60.
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Cabioch L., 1967. Résultats obtenus par l'emploi de la photographie sous-marine sur le fonds du large de Roscoff. Helgoländer wiss. Meeresunters., T. 15, pp. 361–70.
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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
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