Antarctic associations : the parasitic relationship between the gastropod Bathycrinicola tumidula (Thiele, 1912) (Ptenoglossa: Eulimidae) and the comatulid Notocrinus virilis Mortensen, 1917 (Crinoidea: Notocrinidae) in the Ross Sea

The first case of parasitic association between an eulimid mollusc (Gastropoda, Ptenoglossa) and a comatulid (Echinodermata: Crinoidea) is reported for Antarctica. The mollusc involved in the association is Eulima tumidula Thiele, 1912, which has now been ascribed to the genus Bathycrinicola Bouchet...

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Bibliographic Details
Published in:Polar biology 2007-11, Vol.30 (12), p.1545-1555
Main Authors: SCHIAPARELLI, S, GHIRARDO, C, BOHN, J, CHIANTORE, M, ALBERTELLI, G, CATTANEO-VIETTI, R
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Bathycrinidae
Biological and medical sciences
Climate change
Crinoidea
Echinodermata
Eulimidae
Fundamental and applied biological sciences. Psychology
Gastropoda
Marine
Marine biology
Mollusca
Mollusks
Notocrinidae
Parasites
Particular ecosystems
Protozoa. Invertebrata
Shellfish
Symbiosis
Synecology
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Summary:The first case of parasitic association between an eulimid mollusc (Gastropoda, Ptenoglossa) and a comatulid (Echinodermata: Crinoidea) is reported for Antarctica. The mollusc involved in the association is Eulima tumidula Thiele, 1912, which has now been ascribed to the genus Bathycrinicola Bouchet & Warén, 1986, never recognized before in Antarctica. This genus is present only in the NE Atlantic Ocean and the Mediterranean Sea, and encompass species which are specific parasites of the sessile stalked crinoids of the family Bathycrinidae. However, in Antarctica, Bathycrinicola tumidula (Thiele, 1912) exploits the endemic vagile comatulid Notocrinus virilis Mortensen, 1917, and attains the largest known dimensions (1 cm) for a Bathycrinicola species. The absence of suitable Bathycrinidae host in modern Antarctic benthic assemblages, as well as the long paleontological history of the genus Notocrinus in Antarctica, suggest a possible 'host-switch' phenomenon. This event could reasonably have occurred when many species underwent considerable bathymetric shifts, during the dramatic climatic changes that affected Antarctica.[PUBLICATION ABSTRACT]
ISSN:0722-4060
1432-2056
DOI:10.1007/s00300-007-0315-x