Abstract1_5 (Hasumi)

Hasumi, M., and H. Iwasawa: Dependence of prolactin-stimulated tail fin growth and molting on water in male salamanders (Hynobius nigrescens). Zoological Science (Japan, International) 9(5): 1093-1096, October 1992.

Abstract: Prolactin (PRL)-stimulated tail fin growth and molting are dependent on water in male Hynobius nigrescens. Tail length and height increased in PRL-injected groups regardless of habitat (i.e., terrestrial or aquatic), but the aquatic habitat helped the rapid growth of tail fin. Even under low-temperature conditions (mimic breeding season), molting was speeded up in all saline-injected animals housed in a fully aquatic habitat, and further speeded up by PRL regardless of habitat, suggesting that an aquatic environment induced the secretion of PRL in this species.