Title
Morphometric evaluation of DNA-based cryptic taxa in the terrestrial decollate snail genus Rumina Morphometric evaluation of DNA-based cryptic taxa in the terrestrial decollate snail genus Rumina
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
London ,
Subject
Biology
Source (journal)
The journal of molluscan studies. - London, 1976, currens
Volume/pages
81(2015) :2 , p. 223-232
ISSN
0260-1230
ISI
000355318000005
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The land snail genus Rumina shows much intra- and interspecific variation in shell morphology. Three morphospecies are commonly recognized: R. decollata, R. saharica and R. paivae. The descriptions of these three morphospecies were based on differences in shell and genital characters for R. saharica and R. decollata, and shell size for R. paivae. However, recently DNA-sequence data have suggested that these morphospecies comprise at least seven phylogenetic species (R. decollata molecular operational taxonomic units (MOTUs) A-F and R. saharica). The present study explores to what extent these phylogenetic species are morphologically diagnosable and/or can be reconciled with the three currently recognized morphospecies. It shows that: (1) R. saharica, and to a lesser extent R. decollata MOTUs A and Eb, are significantly differentiated from the other phylogenetic species by both genital and shell characters, and can be regarded as three diagnosable biological and phylogenetic species; (2) there are no diagnostic genital features for R. paivae, so that this taxon should not be treated as a separate species; (3) none of the other DNA-based R. decollata MOTUs could be consistently differentiated by the shell and genital characters analysed in this study, so that their status needs further scrutiny.
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