TY - JOUR

T1 - Trapped on the Roof of the World: taxonomic diversity and evolutionary patterns of Tibetan Plateau endemic freshwater snails (Gastropoda: Lymnaeidae: Tibetoradix)

AU - Винарский, Максим Викторович

AU - Von Oheimb, Parm Viktor

AU - Аксёнова, Ольга Владимировна

AU - Гофаров, Михаил Юрьевич

AU - Кондаков, Александр Васильевич

AU - Нехаев, Иван Олегович

AU - Болотов, Иван Николаевич

N1 - Publisher Copyright: © 2021 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and John Wiley & Sons Australia, Ltd.

PY - 2021/11/8

Y1 - 2021/11/8

N2 - The high-elevation Tibetan Plateau (western China) is inhabited by a unique, though not particularly species-rich, community of organisms. We explored the species content and evolutionary history of the Tibetan Plateau endemic freshwater snail genus Tibetoradix. Phylogenetic relationships within the genus were reconstructed based on available sequence data. We used a single-rate Poisson Tree Processes approach for species delimitation and compared putative species-level clades with already described taxa. We found that the genus consists of at least 6 species, of which we described 4 as new to science. Shell and soft body morphology was examined and the radula in Tibetoradix was described for the first time. Based on our findings, the diversification of the genus did not result in a prominent morphological differentiation and a number of species can be regarded as morphologically cryptic. Single species found in different drainage areas indicate relatively good passive dispersal abilities of the snails. The allopatric distribution of the species could result from competitive exclusion between them. The absence of Tibetoradix spp. outside the Tibetan Plateau could be explained by a scenario of an “evolutionary trap”, where adaptations to high elevation conditions prevented the taxa from a successful colonization of lower elevations.

AB - The high-elevation Tibetan Plateau (western China) is inhabited by a unique, though not particularly species-rich, community of organisms. We explored the species content and evolutionary history of the Tibetan Plateau endemic freshwater snail genus Tibetoradix. Phylogenetic relationships within the genus were reconstructed based on available sequence data. We used a single-rate Poisson Tree Processes approach for species delimitation and compared putative species-level clades with already described taxa. We found that the genus consists of at least 6 species, of which we described 4 as new to science. Shell and soft body morphology was examined and the radula in Tibetoradix was described for the first time. Based on our findings, the diversification of the genus did not result in a prominent morphological differentiation and a number of species can be regarded as morphologically cryptic. Single species found in different drainage areas indicate relatively good passive dispersal abilities of the snails. The allopatric distribution of the species could result from competitive exclusion between them. The absence of Tibetoradix spp. outside the Tibetan Plateau could be explained by a scenario of an “evolutionary trap”, where adaptations to high elevation conditions prevented the taxa from a successful colonization of lower elevations.

KW - High Asia

KW - biogeography

KW - molecular phylogenetics

KW - morphology

KW - species delimitation

KW - CHINA

KW - HIMALAYA

KW - MULTIPLE SEQUENCE ALIGNMENT

KW - MOLLUSCA

KW - FAUNA

KW - REGIONS

KW - MOUNTAINS

KW - CLIMATE

KW - RADIX-BALTHICA

UR - http://www.scopus.com/inward/record.url?scp=85120483066&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/a905bbe7-41cd-34a3-9ec3-d1b9f6dee682/

U2 - 10.1111/1749-4877.12600

DO - 10.1111/1749-4877.12600

M3 - Article

JO - Integrative Zoology

JF - Integrative Zoology

SN - 1749-4869

ER -