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Title

A new tritoniid species (Mollusca : Opisthobranchia) from Bouvet Island

AuthorsBallesteros, Manuel ; Àvila, Conxita
Issue Date2006
PublisherSpringer
CitationPolar Biology 29: 128-137 (2006)
AbstractTritoniid sea slugs (Mollusca, Gastropoda, Opisthobranchia) are reported for the first time from Bouvet Island. Tritonia dantarti sp. n. shows morphological and anatomical differences with regard to the two previously known tritoniids reported from Antarctica and Sub-Antarctica, Tritonia vorax (Odhner 1926) and Tritonia challengeriana Bergh, 1884. Regarding the external morphology, T. dantarti sp. n. is characterized by a very bright orange coloration in the dorsum, white dorsal crests, highly ramified dendritic gills (the largest vertically orientated and the rest laterally orientated), and a quadrangular cross section. The radula presents very long, thin lateral teeth and the jaws present mainly unicuspidate, striated denticles. The seminal receptacle is large, pear-shaped and its grey pigmentation differs from the rest of the genital system. The Antarctic species T. challengeriana was also found in waters off Bouvet Island, while the Subantarctic species T. vorax was not found.
Description9 páginas, 6 figuras, 3 tablas
Publisher version (URL)http://dx.doi.org/10.1007/s00300-005-0059-4
URIhttp://hdl.handle.net/10261/132030
DOI10.1007/s00300-005-0059-4
ISSN0722-4060
E-ISSN1432-2056
Appears in Collections:(CEAB) Artículos
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