Abstract
Regeneration ability is known for several Actinopterygii or ray-finned fishes. In order to assess the universality of regenerative potencies in this group of fishes, we have examined for the first time, caudal fin regeneration in tooth-carp, Aphanius dispar (Ruppell, 1829). The caudal fin is used because of its accessibility, simple structure and fast regeneration. The results revealed the regeneration ability in caudal fin of A. dispar . The initiation of the regenerative outgrowth was differing in three examined water temperatures. It is started approximately 5 days post amputation (5 dpa) at room temperature, and 2 dpa at 25°С and 28°С. Our finding indicates that water temperature more than 25°С promotes procedure in caudal fin regeneration of A. dispar . By considering the high regeneration ability in A. dispar , and also the relatively short life span of the members of the genus Aphanius , we concluded that these fishes could probably be used in regeneration researches. However, details of this mechanism in Aphanius need further examinations.
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