Rodríguez, E. (2012). First endomyarian sea anemone (Cnidaria, Actiniaria) putatively from chemosynthetic environments: a new deep-sea genus and species from the North Pacific. Marine Biology Research. 8(9): 791-801.

341217

10.1080/17451000.2012.692162 [view]

Rodríguez, E.

2012

8(9): 791-801

Publication

A new genus and species of deep-sea sea anemone is described and illustrated from the vicinity of a cold seep in the North Pacific Ocean. Henactis seepala gen. nov. et sp. nov. is characterized by an endodermal marginal sphincter, smooth column with 24 marginal projections of two kinds alternately arranged, equal numbers of mesenteries proximally and distally, five cycles of mesenteries regularly arranged with only the first cycle perfect, diffuse retractor musculature and well-developed basilar muscles. Henactis seepala gen. et sp. nov. is the first sea anemone of the group Endomyaria putatively reported from chemosynthetic environments. The discovery of H. seepala gen. et sp. nov. is the first evidence that sea anemones from chemosynthetic environments are the product of at least two radiations.

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