If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Free Content A New Species, Adamsia Obvolva (Cnidaria: Anthozoa: Actiniaria), from the Gulf of Mexico, and a Discussion of the Taxonomy of Carcinoecium-forming Sea Anemones

 Download
(PDF 2,174.8kb)
 
Download Article:

Abstract:

Adamsia obvolva is a new species of sea anemone (order Actiniaria, family Hormathiidae) from the Gulf of Mexico, symbiotic with the hermit crab Parapagurus pictus (Smith, 1883). The pedal disc of the anemone enwraps the gastropod shell in which the hermit crab lives, and secretes a thin, chitinous carcinoecium that lies between the pedal disc ectoderm of the anemone and the gastropod shell. The description of A. obvolva n. sp. highlights many of the problems confounding the systematics of actiniarians symbiotic with hermit crabs. Adamsia obvolva, which has been misidentified as Paracalliactis involvens (McMurrich, 1893), presents a suite of attributes that blur the distinction between the genera Adamsia Forbes, 1840, and Calliactis Verrill, 1869. We review definitions of these genera and emend Adamsia to include only those species that form a carcinoecium and have a lobed pedal disc. To better differentiate between A. obvolva and P. involvens, we investigate the syntypes of Adamsia involvens McMurrich, 1893, which had been transferred to Paracalliactis, and of its putative synonym Urticina consors Verrill, 1882; we redescribe the species as Paracalliactis consors (Verrill, 1882). Adamsia obvolva and P. consors can be distinguished by tentacle number, the cinclides on the lower column of specimens of A. obvolva, and cnidae distribution and size. The taxonomic changes we propose are summarized in a diagnostic key to actiniarian families and genera that live attached to gastropod shells.

Document Type: Research Article

Publication date: March 1, 2004

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more