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Description of a new species of giant clam (Bivalvia: Tridacnidae) from Ningaloo Reef, Western Australia

Penny, Shane S. and Willan, Richard C. (2014). Description of a new species of giant clam (Bivalvia: Tridacnidae) from Ningaloo Reef, Western Australia. Molluscan Research,34(3):201-211.

Document type: Journal Article
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IRMA ID 75039815xPUB702
Title Description of a new species of giant clam (Bivalvia: Tridacnidae) from Ningaloo Reef, Western Australia
Author Penny, Shane S.
Willan, Richard C.
Journal Name Molluscan Research
Publication Date 2014
Volume Number 34
Issue Number 3
ISSN 1323-5818   (check CDU catalogue open catalogue search in new window)
Start Page 201
End Page 211
Total Pages 11
HERDC Category C1 - Journal Article (DIISR)
Abstract A new species of giant clam from northern Australian coastal waters is distinguished principally on genetic evidence. Of Recent tridacnids, Tridacna ningaloo n. sp. is morphologically closest to the most widespread species in the Indo-Pacific, Tridacna maxima (Röding, 1798), yet genetically closest to the species pair T. squamosa Lamarck, 1819 plus T. crocea Lamarck, 1819. Genotype data are provided for the type material of T. ningaloo n. sp. The greatest significance of this new, cryptic species is that it casts doubt on the correctness of the ‘historical’ giant clam species defined solely on conchological characters, particularly T. maxima. This paper supports the retention of all giant clams in the family Tridacnidae, as distinct from the Cardiidae, because of their numerous morphological apomorphies, specialised ecological niche, and independent acquisition of symbiotic zooxanthellae.
Keywords genetics
taxonomy
cryptic species
international legislation
Cardioidea
Tridacnidae
Cardiidae
Indo-Pacific
DOI http://dx.doi.org/10.1080/13235818.2014.940616   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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