Title A Review on Spawning under Captive Condition in Japanese Horse Mackerel Trachurus japonicus
Authers Masakazu OKA and Koh-ichirou MORI
Keywords Trachurus japonicus, Japanese horse mackerel, spawning, captive condition
Citation Bull. Fish. Res. Agen. supplement No. 4, 151-155, 2006
Abstract
A review on spawning under captive conditions in Japanese horse mackerel Trachurus japonicus was conducted. All successful trials of egg collection conducted during 1980 to 1983 were analyzed. The number of spawners in used broodstock group was estimated to be small. Consecutive spawning after termination of the direct effect of HCG (human chorionic gonadotropin) injection was not recognized in Japanese horse mackerel. This result was different from the results reported in the same family species, Pseudocaranx dentex, Seriola dumelili, and Seriola quinqueradiata. It was implied that some condition of rearing in the tank prevented the broodstock from spawning consecutively after the first spawning induced by hormonal treatment.
URI http://www.fra.affrc.go.jp/bulletin/bull/bull-b4/21.pdf