Athorybia Lucida, a New Species of Siphonophore (Physonectae Athorybiidae) from the North Atlantic Ocean
Specimens of a transparent, bilaterally compressed species of Athorybia Eschscholtz, 1829 were collected by SCUBA divers in the upper 30 m of the subtropical North Atlantic Ocean. The colonies, which lacked nectophores, were enclosed in a bilaterally symmetric corona of bracts. The bracts, although budded apically, were not attached directly to the small pneumatophore and lacked the distinct longitudinal rows of nematocysts characteristic of previously reported species of Athorybia. Tentilla ended in a pair of terminal filaments but lacked a central ampulla; those of larger colonies presented dendritic processes which arose basally from the involucrum. The hyperiid amphipod Thyropus similis (Stephensen, 1925) was found associated with two-thirds of the specimens.
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Document Type: Research Article
Publication date: 1978-07-01
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