Journal Article
Phylogenetic analysis and osteological comparison of the cave-dwelling spined loach, Bibarba parvoculus (Cypriniformes: Cobitidae), and its surface congener
He, Y., Chen, Y., Yang, J. and Page, L.M.
Record Number:
4795
Year:
2021
Journal:
Zoological Journal of the Linnean Society
Pages:
1059-1074
Volume:
191
Abstract:
Bibarba parvoculus, a depigmented and small-eyed, spined loach, is endemic to a karst cave in southern China. Both mitochondrial Cytb and nuclear RAG1 gene analyses indicate that B. parvoculus and its only surface congener, B. bibarba, form the basal-most lineage in the so-called Northern Clade of Cobitidae. Genetic divergence for Cytb is 10.3 % between B. parvoculus and B. bibarba. A duplication of the lamina circularis on the second and third pectoral rays occurs in male Bibarba species. The osteology of the two species is illustrated and compared using X-ray microtomography. Bibarba parvoculus has higher vertebral counts, a broader anterior part of the frontal bone at the orbital region and decreased sexual dimorphism when compared with B. bibarba. The coracoid, mesocoracoid and scapula are stouter in males of both species, but the three bones are autogenous in B. parvoculus, while fused with the cleithrum in B. bibarba. Specific differentiation of B. parvoculus is corroborated by both molecular and morphological evidence. The split between the two species is estimated to have occurred in the Early Miocene.
cavefish, cobitid, South China, the Northern Clade, X-ray microtomography
Times Cited:
2
Relevent Species:
Related Records:
Chen, Y-X. and Chen, Y-F. (2007)
Bibarba bibarba: A new genus and species of Cobitinae (Pisces: Cypriniformes: Cobitidae) from Guangxi Province (China)
Chen, Y-X. and Chen, Y-F. (2007)Bibarba bibarba: A new genus and species of Cobitinae (Pisces: Cypriniformes: Cobitidae) from Guangxi Province (China)
Kottelat, M. (2012)Conspectus cobitidum: An inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei)
Kottelat, M. (2012)Conspectus cobitidum: An inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei)
Lan, J.H., Gan, X., Wu, T.J. and Yang, J. (2013)Cave fishes of Guangxi, China
Lan, J.H., Gan, X., Wu, T.J. and Yang, J. (2013)Cave fishes of Guangxi, China
Wu, T.J., Yang, J. and Xiu, L.H. (2015)A new species of Bibarba (Teleostei: Cypriniformes: Cobitidae) from Guangxi, China
Chen G.-J., Liao W. and Lei X.-Q. (2015)First fossil cobitid (Teleostei: Cypriniformes) from Early- Middle Oligocene deposits of South China
Chen G.-J., Liao W. and Lei X.-Q. (2015)First fossil cobitid (Teleostei: Cypriniformes) from Early- Middle Oligocene deposits of South China
Wu, T.J., Yang, J. and Xiu, L.H. (2015)A new species of Bibarba (Teleostei: Cypriniformes: Cobitidae) from Guangxi, China
Bohlen, J., Li, F. and Šlechtová, V. (2019)Phylogenetic position of the genus Bibarba as revealed from molecular genetic data (Teleostei: Cobitidae).
Bohlen, J., Li, F. and Šlechtová, V. (2019)Phylogenetic position of the genus Bibarba as revealed from molecular genetic data (Teleostei: Cobitidae).
Yang, H., Chen, Z. and Li, W. (2020)A new blind subterranean species of the genus Bibarba from Yunnan, China.
Yang, H., Chen, Z. and Li, W. (2020)A new blind subterranean species of the genus Bibarba from Yunnan, China.
He, Y., Chen, Y., Yang, J. and Page, L.M. (2021)Phylogenetic analysis and osteological comparison of the cave-dwelling spined loach, Bibarba parvoculus (Cypriniformes: Cobitidae), and its surface congener
He, Y., Chen, Y., Yang, J. and Page, L.M. (2021)Phylogenetic analysis and osteological comparison of the cave-dwelling spined loach, Bibarba parvoculus (Cypriniformes: Cobitidae), and its surface congener