An integrative approach to species delimitation in Benthomangelia (Mollusca: Conoidea)

Type Article
Date 2009-03
Language English
Author(s) Puillandre Nicolas1, Baylac Michel2, Boisselier Marie-Catherine1, Cruaud Corinne3, Samadi Sarah1
Affiliation(s) 1 : UPMC, CNRS,Dept Syst Evolut, MNHN,UMR 7138, IRD,Serv Systemat Mol,IFR 101, F-75231 Paris 05, France.
2 : MNHN, USM Origine 0601, Paris, France.
3 : Ctr Natl Sequencage, GENOSCOPE, Evry, France.
Source Biological Journal Of The Linnean Society (0024-4066) (Wiley-blackwell Publishing, Inc), 2009-03 , Vol. 96 , N. 3 , P. 696-708
DOI 10.1111/j.1095-8312.2008.01143.x
WOS© Times Cited 44
Keyword(s) 28S rRNA, COI gene, DNA taxonomy, elliptic fourier analysis, integrative taxonomy, molluscs
Abstract DNA sequences are currently used to propose primary hypotheses of species delimitation, especially when morphological variability is difficult to assess. In an integrative taxonomy framework, these hypotheses are then compared with other characters, such as morphology or geography, to produce robust species delimitations. For this purpose, the cytochrome oxidase subunit I (COI) gene has been sequenced for almost 50 specimens of the genus Benthomangelia, a deep-sea marine gastropod genus, collected in the South-West Pacific. Five genetic groups, displaying low and high genetic distances respectively within and between groups, were defined. COI hypotheses were compared with both the results obtained with the independent nuclear 28S gene and with an elliptic Fourier analysis of the shape of the last whorl of the shell. 28S gene analysis confirmed the same well-supported groups as COI, and elliptic Fourier analysis identified several morphological characters that vary similarly to genetic variability.
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