Molecular phylogeny of the snorkel snail Rhiostoma housei, a species complex from Thailand with descriptions of three new species
11
Issued Date
2023-01-01
Resource Type
ISSN
14455226
eISSN
14472600
DOI
Scopus ID
2-s2.0-85164273526
Journal Title
Invertebrate Systematics
Volume
37
Issue
3
Start Page
211
End Page
229
Rights Holder(s)
SCOPUS
Bibliographic Citation
Invertebrate Systematics Vol.37 No.3 (2023) , 211-229
Suggested Citation
Prasankok P., Sutcharit C., Jeratthitikul E., Backeljau T., Pimvichai P. Molecular phylogeny of the snorkel snail Rhiostoma housei, a species complex from Thailand with descriptions of three new species. Invertebrate Systematics Vol.37 No.3 (2023) , 211-229. 229. doi:10.1071/IS22037 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/88004
Title
Molecular phylogeny of the snorkel snail Rhiostoma housei, a species complex from Thailand with descriptions of three new species
Other Contributor(s)
Abstract
Snorkel snails (genus Rhiostoma) are widely distributed in Indo-China and on the Malay Peninsula. The shell morphology is traditionally used for species identification yet in Thailand, the common snorkel snail, Rhiostoma housei, shows considerable variation in shell morphology within and between populations. Therefore species identifications and delimitations are difficult. We used two mitochondrial DNA fragments (COI and 16S rRNA) and morphological characters to delimit species and infer phylogenetic relationships of Rhiostoma housei s.l. from eight localities in Thailand, representing potential cryptic species suggested by earlier allozyme and karyological data. Results revealed four distinct clades from different geographic areas in Thailand. Species delimitation analyses confirmed the clades as four separate species and a geometric morphometric analysis demonstrated subtle but consistent conchological differences between the four clades. The high COI sequence divergences among the four clades (mean: 14.8%; range: 10.3-16.5%) further supported the species level recognition. As a consequence, three new species are described from Thailand: R. khoratense, sp. nov., R. nakwangense, sp. nov. and R. phunangense, sp. nov.