In:
Zoosystematics and Evolution, Pensoft Publishers, Vol. 99, No. 1 ( 2023-01-06), p. 29-43
Abstract:
Freshwater mussels belonging to the genus Cristaria Schumacher, 1817 (Bivalvia: Unionidae) are widespread from Mongolia to Indochina while the range of one species, C. plicata (Leach, 1814), covers two biogeographic subregions, i.e., East Asian (Amur River to Vietnam) and Sundaland (Mekong River basin). We present here a taxonomic revision of the nominal taxon Anodonta bellua Morelet, 1866 which was described from the Mekong (Lake Tonle-Sap, Cambodia) but is currently considered a synonym of C. plicata . We obtained molecular data for newly collected Cristaria representatives from the Mekong’s tributaries in Laos, which were found as a divergent species-level phylogenetic clade within the genus that is distant from C. plicata . Nevertheless, comparative morphological and morphometric studies did not reveal any significant differences between these two congeners. Our time-calibrated biogeographic modeling reveals that the split between Cristaria bellua (Mekong) and C. clessini (East Asia) probably occurred in the mid-Miocene (15.8 Ma) and may reflect an ancient stream capture between the Mekong Basin and East Asian rivers.
Type of Medium:
Online Resource
ISSN:
1860-0743
,
1435-1935
DOI:
10.3897/zse.99.90784
DOI:
10.3897/zse.99.90784.figure1
DOI:
10.3897/zse.99.90784.figure2
DOI:
10.3897/zse.99.90784.figure3
DOI:
10.3897/zse.99.90784.figure4
DOI:
10.3897/zse.99.90784.figure5
DOI:
10.3897/zse.99.90784.suppl1
DOI:
10.3897/zse.99.90784.suppl2
DOI:
10.3897/zse.99.90784.suppl3
DOI:
10.3897/zse.99.90784.suppl4
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2023
detail.hit.zdb_id:
2420116-9
detail.hit.zdb_id:
1430702-9
SSG:
12
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