In vivo effects of both methilfarnesoate and 17-hidroxyprogesterone on vitellin levels in ovary, hepatopancreas and hemolimph. A comparison between crayfish and crabs

L. FERRÉ; I. CANOSA; G. SILVEYRA; M. PAOLUCCI; D. MEDESANI; E. RODRIGUEZ

Sapporo, Hokkaido

Simposio; Biennial Symposium of Freshwater Crayfish.; 2014

International Association of Astacology / Carcinological Society of Japan.

In crustaceans, female reproduction is regulated by a variety of hormonal and neuronal factors which include, among others, methyl farnesoate, a stimulator of vitellogenesis and 17-hydroxyprogesterone. Vitellogenin is synthesized in several tissues including the ovary itself and the hepatopancreas, from which vitellogenin is released in the hemolymph and taken up by the ovary where it is stored as vitellin. To investigate the role of methyl farnesoate and 17-hydroxyprogesterone on vitellogeninesis in crustaceans, we in vivo administered both hormones to two crustacean species.