Title Hemolymph levels of vertebrate-type steroid hormones during ovarian development in the kuruma prawn Marsupenaeus japonicus
Authers Takuji OKUMURA
Keywords kuruma prawn, steroid, maturation, eyestalk ablation, blood level
Citation Bull. Fish. Res. Agen. supplement No. 5, 5-7, 2006
For further development of shrimp seed-production, the importance of broodstock management is increasing. However, few hormones have been determined, and hormonal manipulation of shrimp reproduction is limited to eyestalk ablation for the induction of ovarian development and oviposition. In this study, involvement of vertebrate-type steroid hormones on ovarian development was examined in the kuruma prawn Marsupenaeus japonicus. Fluctuation of hemolymph levels of estradiol-17β, estriol, testosterone, 11-ketotestosterone, and progesterone were not correlated to ovarian development. This suggests that the examined vertebrate-type steroid hormones do not play an important role in ovarian development of M. japonicus.
URI http://www.fra.affrc.go.jp/bulletin/bull/bull-b5/04.pdf