Journal of The Malacological Society of London Molluscan Studies Journal of Molluscan Studies (2017) 83: 384–398. doi:10.1093/mollus/eyx029 Advance Access publication date: 17 July 2017 Featured Article One for each ocean: revision of the Bursa granularis (Röding, 1798) species complex (Gastropoda: Tonnoidea: Bursidae) Downloaded from https://academic.oup.com/mollus/article-abstract/83/4/384/3977763 by IFREMER user on 25 January 2019 Malcolm T. Sanders1,2, Didier Merle1, Philippe Bouchet2, Magalie Castelin2, Alan G. Beu3, Sarah Samadi2 and Nicolas Puillandre2 1Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements CR2P – UMR7207 – CNRS, MNHN, UPMC, Muséum national d’Histoire naturelle, Sorbonne Universités, 8 rue Buffon, CP 38, 75005 Paris, France; 2Institut de Systématique, Évolution, Biodiversité ISYEB – UMR 7205 – CNRS, MNHN, UPMC, EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP26, F-75005 Paris, France; and 3GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Correspondence: N. Puillandre; e-mail:
[email protected] (Received 20 March 2017; editorial decision 12 June 2017) ABSTRACT Bursa granularis (Röding, 1798) is a tonnoidean gastropod that is regarded as broadly distributed throughout the Indo-Pacific and tropical western Atlantic. Because of its variable shell it has received no less than thir- teen names, now all synonymized under the name B. granularis. We sequenced a fragment of the cox1 gene for 82 specimens covering a large part of its distribution and most type localities. Two delimitation meth- ods were applied, one based on genetic distance (ABGD) and one based on phylogenetic trees (GMYC). All analyses suggest that specimens identified as B.