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Changes In Morphology During The Development Of The Horn And Hump Of The Chinese Cavefish Sinocyclocheillus Furcodorsalis, Michelle Pluviose

Theses

The genus Sinocyclocheilus endemic to southern China and contains many cavefish species. There are approximately sixty species, of which roughly forty are cave-adapted. Cave Sinocyclocheilus are characterized not only by lack of pigmentation and eyes depending on the species, but also by a unique prominent horn on the top of the skull and dorsal hump rostral under the dorsal fin. The horn and the hump are generally considered troglomorphic characteristics, although their functions are still elusive. Here, the development of these distinctive structures in the species, S. furcodorsalis, was examined by using micro CT scans. The horn of the …