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Recent investigations in the distribution of regular echinoids in the North Sea
Cranmer, G.J. (1985). Recent investigations in the distribution of regular echinoids in the North Sea. J. Mar. Biol. Ass. U.K. 65(2): 351-357
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keyword
    Marine

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  • Cranmer, G.J.

Abstract
    During 7 demersal fish surveys (M.A.F .F ., Lowestoft) 645 trawl stations were sampled. From these over 120 benthic invertebrate species have been identified, six of which are regular echinoids, four belonging to the genus Echinus and one each to the genera Cidaris and Psammechinus. Three species, Echinus elegans, E. tenuispinus and Cidaris cidaris appear to be restricted to the edge of the continental shelf. Echinus esculentus and Psammechinus miliaris are shallow water species. Psammechinus appears to be endemic to the southern North Sea whilst E. esculentus is commonest in shallow Scottish waters. Both varieties of Echinus acutus are rarely found in water shallower than 100 m, whilst var. norvegicus is most common to the east.

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