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Geographic variation in the abundance and morphology of the bryozoan Alcyonidium diaphanum (Ctenostomata: Alcyonidiidae) in UK coastal waters / J.S Porter; J.R Ellis; P.J Hayward; S.I Rogers; R Callaway; Ruth Callaway

Journal of the Marine Biological Association of the UK, Volume: 82, Issue: 4, Pages: 529 - 535

Swansea University Author: Ruth, Callaway

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Abstract

The ctenostome bryozoan Alcyonidium diaphanum is widespread and abundant in the coastal waters ofEngland and Wales.I t was recorded in 77^90% of beam trawl catches in the eastern English Channeland southern North Sea, and in 53^73% of catches in the Bristol Channel and Irish Sea.The maximumcatch rat...

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Published in: Journal of the Marine Biological Association of the UK
ISSN: 0025-3154
Published: 2002
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URI: https://cronfa.swan.ac.uk/Record/cronfa13088
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Abstract: The ctenostome bryozoan Alcyonidium diaphanum is widespread and abundant in the coastal waters ofEngland and Wales.I t was recorded in 77^90% of beam trawl catches in the eastern English Channeland southern North Sea, and in 53^73% of catches in the Bristol Channel and Irish Sea.The maximumcatch rates in these two study areas were 1410 and 751kg h71 respectively. Alcyonidium diaphanum was mostabundant in the greaterThames Estuary.A dditional data from the North Sea indicated that A. diaphanum iswidely distributed throughout the southern North Sea. Alcyonidium diaphanum was found intertidally in onlyseven of 99 locations sampled.Sev eral diĀ”erent morphotypes were observed, ranging from cylindrical tolobate forms.The distribution patterns of various morphotypes are discussed.
College: College of Science
Issue: 4
Start Page: 529
End Page: 535