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Six new species of glass sponges (Porifera: Hexactinellida) from the north-eastern Pacific Ocean

Published online by Cambridge University Press:  26 March 2013

Henry M. Reiswig
Henry M. Reiswig*
Affiliation:
Natural History Section, Royal British Columbia Museum, 675 Belleville Street, Victoria, British Columbia, V8W9W2, Canada Department of Biology, University of Victoria, PO Box 3020, Stn CSC, Victoria, British Columbia, V8W 3N5, Canada
*
Correspondence should be addressed to: H.M. Reiswig, Natural History Section, Royal British Columbia Museum, 675 Belleville Street, Victoria, British Columbia, V8W9W2, Canada email: [email protected]
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Abstract

Six new species of Hexactinellida are described from hard bottom communities of shelf, canyon and seamounts of the west coast of North America: Washington, British Columbia and Gulf of Alaska. They were collected by a variety of methods, trawl, manned submersible, and robot submersible, and hence vary greatly in condition. The six species comprise additions to five different families of the subclass Hexasterophora, Farreidae (Farrea omniclavata sp. nov. and F. truncata sp. nov.), Euretidae (Chonelasma oreia sp. nov.), Euplectellidae (Amphidiscella lecus sp. nov.), Leucopsacidae (Oopsacas olympicus sp. nov.) and Rossellidae (Acanthascus malacus sp. nov.). These additions represent an increase of 29% to the known species of Hexactinellida in this area. A completely unique form of defended tabulate stalk is described for A. lecus. The species Chauoplectella spinifera is transferred to Oopsacas.

Keywords

Hexactinellidaglass spongesnorth-eastern PacificbiodiversityseamountHexasterophoraGulf of Alaska
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 2 , March 2014 , pp. 267 - 284
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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