Ptychodactis aleutiensis, a new species of ptychodactiarian sea anemone (Cnidaria: Anthozoa: Actiniaria) from the Aleutian Islands, Alaska

We describe a new species of ptychodactiarian sea anemone, Ptychodactis aleutiensis, and redefine the family Ptychodactiidae and the previously monotypic genus Ptychodactis to accommodate P. aleutiensis sp. nov. Individuals of the new species were photographed and collected at depths of less than 20...

Full description

Saved in:
Bibliographic Details
Published in:Marine biology research 2010-01, Vol.6 (6), p.570-578
Main Authors: Eash-Loucks, Wendy E., Jewett, Stephen C., Fautin, Daphne G., Hoberg, Max K., Chenelot, Héloïse
Format: Article
Language:English
Subjects:
Actiniaria
Anthozoa
Bering Sea
Cnidaria
Hexacorallia
Marine
Ptychodacteae
sjøanemoner
sub-Arctic
taksonomi
taxonomy
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We describe a new species of ptychodactiarian sea anemone, Ptychodactis aleutiensis, and redefine the family Ptychodactiidae and the previously monotypic genus Ptychodactis to accommodate P. aleutiensis sp. nov. Individuals of the new species were photographed and collected at depths of less than 20 m off the Aleutian Islands, Alaska. Many were found detached, adrift in the water. The species differs from the only other member in its genus, Ptychodactis patula, in having more tentacles, tentacles only at the margin, frilled structures associated with only two siphonoglyphs, infertile primary mesenteries, oral stomata, holotrichous nematocysts of two size classes in the tentacles, actinopharynx, and mesenterial filaments, and by the morphology of the holotrichs and spirocysts. It is the fourth species of ptychodactiarian described; Ptychodactis is the only genus of suborder Ptychodacteae with more than one species.
ISSN:1745-1000
1745-1019
DOI:10.1080/17451000903476933