Journal Article

Ontogenetic development of the horn and hump of the Chinese cavefish Sinocyclocheilus furcodorsalis (Cypriniformes: Cyprinidae)

Soares, D., Pluviose, M. and Zhao, Y.

Record Number:
4250
Year:
2019
Journal:
Environmental Biology of Fishes
Pages:
yy
Volume:
xx
Abstract:
Abstract Cave adaptation has given rise to a diversity of unusual morphologies. One prominent character in Chinese cavefishes of the genus Sinocyclocheilus is the presence of a skull horn and a dorsal hump. These characters are present only in species that are troglobitic. Here we examine the osteological growth that underlies the horn and the hump of the species S. furcodorsalis using micro computed tomography. We tested the hypothesis that all structures grow isometrically, and found that the skull and the bony shelf that supports the horn grow isometrically in all dimensions. The neural spine of the first vertebrae, on the other hand, grew allometrically, getting taller and thinner with time. When comparing each structure with skull growth, the horn grew isometrically in the anterior-posterior and the medial-lateral dimensions. But the horn grew faster in height than the skull. The neural spine grew isometrically with the skull in the rostral-caudal dimension, but allometrically in the dorsal-ventral and medial-lateral dimensions. Even though the function of the horn and the hump are not known, our results suggest that heterochronic changes has led to allometric growth in these structures.
Times Cited:
1
Related Records:
Chen, Y.R., Yang, J.X and Lan, J. H. (1997)
One new species of blind cavefishfrom Guangxi with comments on its phylogentic status (Cypriniformes: Cyprinidae: Barbinae)
Wang, D and Chen, YY (1998)
On the diagnosis of Sinocyclocheilus and the taxonomic position of its closely related genus Anchicyclocheilus (Cypriniformes: Cyprinidae: Barbinae)
Xiao, H, Zhang, R, Feng, J, Ou, Y., M, Li, W, Chen, S and Zan, R (2002)
Nuclear DNA content and ploidy of seventeen species of fishes in Sinocyclocheilus
Romero, A., Zhao, Y.H. and Chen, X.Y. (2009)
The hypogean fishes of China
Zhao, YH and Zhang, CG (2009)
Endemic fishes of Sinocyclocheilus (Cypriniformes: Cyprinidae) in China - Species diversity, cave adaptation, systematics and zoogeography
Zhao, Y.H., Gozlan, R.E. and Zhang, C.G. (2011)
Out of sight out of mind: current knowledge of Chinese cave fishes
He,S., Liang,X.F., Chu, W.Y. and Chen, D.X (2012)
Complete mitochondrial genome of the blind cave barbel Sinocyclocheilus furcodorsalis (Cypriniformes: Cyprinidae)
Waryani, B., Zhao, Y. H., Zhang, C. G., Dai, R. J. and Abbasi, A. R. (2013)
Anatomical Studies of the Olfactory Epithelium of Two Cave Fishes Sinocyclocheilus jii and S. furcodorsalis (Cypriniformes: Cyprinidae) from China
Fenolio, D.B., Zhao, Y., Niemiller, M.L. and Stout, J.F. (2013)
In-situ observations of seven enigmatic cave loaches and one cave barbel from Guangxi, China, with notes on conservation status
Zhang, C.G. and Zhou, Y.H. (2016)
Species diversity and distribution of inland fishes in China
Yang,J., Chen,X., Bai,J., Fang,D., Qiu,Y., Jiang,W., Yuan,H., Bian,C., Lu,J., He,S., Pan,X., Zhang,Y., Wang,X., You,X., Wang,Y., Sun,Y., Mao,D., Liu,Y., Fan,G., Zhang,H., Chen,X., Zhang,X., Zheng,L., Wang,J., Cheng,L. (2016)
The Sinocyclocheilus cavefish genome provides insights into cave adaptation
Li, C.Q., Huang, H.T., Yang, S., He, H., Fu, Q.Y., Chen, S.Y. and Xiao, H. (2018)
Complete mitochondrial genome and phylogenetic analysis of Sinocyclocheilus oxycephalus (Cypriniformes: Cyprinidae)
Niu, C., Luo, J., Yang, J. and Zhao, Y. (2018)
Length–weight relationships of four cavefish species from China
Soares, D., Pluviose, M. and Zhao, Y. (2019)
Ontogenetic development of the horn and hump of the Chinese cavefish Sinocyclocheilus furcodorsalis (Cypriniformes: Cyprinidae)
Chen, H., Li, C., Liu, T., Chen, S. and Xiao, H. (2019)
A metagenomic study of intestinal microbial diversity in relation to feeding habits of surface and cave-dwelling Sinocyclocheilus species
Lunghi, E., Zhao, Y., Sun, X. and Zhao, Y. (2019)
Morphometrics of eight Chinese cavefish species
Mao, T.-R., Liu, Y.-W., Meegaskumbura, M., Yang, J., Ellepola, G., Senevirathne, G., Fu, C.-H., Gross, J.B. and Pie, M.R. (2020)
Evolution in Sinocyclocheilus cavefish is marked by rate shifts, reversals and origin of novel traits