Dendrogaster (Crustacea: Ascothoracida) parasitic in Alaskan and eastern Canadian Leptasterias (Asteroidea)

The ascothoracid parasite Dendrogaster is reported from four boreal localities in the Western Hemisphere. Dendrogaster elegans Wagin infests the sea star Leptasterias polaris in Bristol Bay, Alaska, and in the Gulf of St. Lawrence; the eastern specimens have a shorter brood sac middle piece. A lecto...

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Bibliographic Details
Published in:Canadian Journal of Zoology
Main Author: Grygier, Mark J.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1986
Subjects:
Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
Bering Sea
Davis Strait
Alaska
Online Access:http://dx.doi.org/10.1139/z86-186
http://www.nrcresearchpress.com/doi/pdf/10.1139/z86-186
Description
Summary:The ascothoracid parasite Dendrogaster is reported from four boreal localities in the Western Hemisphere. Dendrogaster elegans Wagin infests the sea star Leptasterias polaris in Bristol Bay, Alaska, and in the Gulf of St. Lawrence; the eastern specimens have a shorter brood sac middle piece. A lectotype is selected and described for D. arctica Korschelt from L. groenlandica in the eastern Bering Sea; Siberian specimens previously assigned to this species differ from the type in many details. Immature specimens of an unidentified Dendrogaster species have been found in L. floccosa from the Davis Strait.

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