WoRMS source details
Buss, L.W.; Yund, P.O. (1989). A sibling species group of Hydractinia in the north-eastern United States. J. mar. biol. Ass. U.K. 69(4) 857-874.
23812
Buss, L.W.; Yund, P.O.
1989
A sibling species group of Hydractinia in the north-eastern United States
J. mar. biol. Ass. U.K.
69(4) 857-874
Publication
The genus Hydractinia has traditionally been reported to be represented by a single common species in the western Atlantic. Breeding experiments, supplemented by morphometric and electrophoretic analyses, demonstrate the existence of three distinct Hydractinia species (including H. polyelina) in the nearshore waters of the north-eastern United States. Two of these species (H. symbiolongicarpus sp. nov. and H. symbiopollicaris sp. nov.) are described as new. Samples collected at nine locations from Maine to Connecticut confirm that each Hydractinia species is predominantly, but not exclusively, associated with a single host hermit crab species. Traditional morphometric characters are largely inadequate to distinguish between species. Growth beyond the shell margin, electromorph at the malate dehydrogenase locus, and nutritive polyp morphology are diagnostic criteria for one or more of these species.Descriptors: HYDRACTINIA SYMBIOLONGICARPUS new species; HYDRACTINIA SYMBIOPOLLICARIS new species; HYDRACTINIA POLYCLINAfigs 1-2, tabs 1-6. (xi.1989).
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Systematics, Taxonomy
Zoogeography, Biogeography (generalities), Geographic distribution
Zoogeography, Biogeography (generalities), Geographic distribution
Date
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2013-01-12 18:30:12Z
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Hydractinia symbiolongicarpus Buss & Yund, 1989 (original description)
Hydractinia symbiopollicaris Buss & Yund, 1989 (original description)
Hydractinia symbiopollicaris Buss & Yund, 1989 (original description)
Grand Manan Island for Hydractinia polyclina L. Agassiz, 1860
Long Island Sound for Hydractinia symbiolongicarpus Buss & Yund, 1989
Vineyard Sound for Hydractinia symbiopollicaris Buss & Yund, 1989
Long Island Sound for Hydractinia symbiolongicarpus Buss & Yund, 1989
Vineyard Sound for Hydractinia symbiopollicaris Buss & Yund, 1989
Type locality
Lectotype (Buss & Yund, 1989) Bay of Fundy, Grand Mahan; on shells inhabited by Pagurus acadianus [details]
Type locality
Atlantic Ocean, Long Island Sound, Harrison Point; 3 m; on shell inhabited by Pagurus longicarpus (Crustacea) [details]
Type locality
Atlantic Ocean, Woods Hole; 10 m; on gastropod shells inhabited by Pagurus pollicaris (Crustacea) [details]