Genus Callorhinchus


Summary:

Cartilaginous fishes with an elongate, almost entirely scale-less body, a heterocercal caudal fin, a single gill opening on either side of the head, two dorsal fins, with a large spine at the beginning of the first, and a distinctive hoe-shaped, proboscis-like snout.

Scales are only present on the claspers and the tenaculum of males that are used during copulation; anal fin close to but separate from rather similar lower lobe of caudal fin; pectoral fins large and falcate with sharply pointed tips.

Callorhinchus Lacepède 1798. Type species Chimaera callorynchus Linnaeus 1758.

Author: Martin F. Gomon & Dianne J. Bray

Cite this page as:
Martin F. Gomon & Dianne J. Bray, Callorhinchus in Fishes of Australia, accessed 20 Feb 2020, http://136.154.202.208/home/genus/253

References


Inoue, J. G., Miya, M., Lam, K., Tay, B. H., Danks, J. A., Bell, J., Walker, T. I. & Venkatesh, B. 2010. Evolutionary origin and phylogeny of the modern holocephalans (Chondrichthyes: Chimaeriformes): a mitogenomic perspective. Mol. Biol. Evol. 27: 2576–2586.

Lacepède, B.G.E. 1798. Histoire naturelle des poissons 1: 1-8 + i-cxlvii + 1-532, Pls. 1-25, 1 table.

Ravi, V., Lam, K., Tay, B. H., Tay, A., Brenner, S. & Venkatesh, B. 2009. Elephant shark (Callorhinchus milii) provides insights into the evolution of Hox gene clusters in gnathostomes. Proc. Natl Acad. Sci. 106: 16 327–16 332.

Venkatesh, B., Kirkness, E.F., Loh, Y.H., Halpern, A.L., Lee, A.P., Johnson, J., Dandona, N., Viswanathan, L.D., Tay, A., Venter, J.C., Strausberg, R.L. & Brenner, S. 2007. Survey sequencing and comparative analysis of the elephant shark (Callorhinchus milii) genome. PLoS Biol. 5(4): e101.

Venkatesh, B., A.P. Lee, V. Ravi, A.K. Maurya, M.M. Lian, J.B. Swann et al. 2014. Elephant shark genome provides unique insights into gnathostome evolution. Nature 505: 174–179.

Venkatesh, B., Tay, A., Dandona, N., Patil, J.G. &and Brenner, S. 2005. A compact cartilaginous fish model genome. Curr. Biol. 15: R82-R83.

Wang, J., Lee, A.P., Kodzius, R., Brenner, S. & Venkatesh, B. 2009. Large number of ultraconserved elements were already present in the jawed vertebrate ancestor. Mol. Biol. Evol. 26: 487-490.

Yu, W.P., Rajasegaran, V., Yew, K., Loh, W., Tay, B.H., Amemiya, C.T., Brenner, S. & Venkatesh, B. 2008. Elephant shark sequence reveals unique insights into the evolutionary history of vertebrate genes: a comparative analysis of the protocadherin cluster. Proc. Natl. Acad. Sci. 105: 3819-3824.