title: Effect of Water Temperature and Photoperiod on Final Oocyte Maturation in Red Marbled Rockfish, Sebastiscus tertius.
abstract: Rearing experiments were conducted using several regimes combined with different photoperiods and water temperatures to investigate the role of temperature and photoperiod as environmental cues regulating reproduction in red marbled rockfish, Sebastiscus tertius. The initial gonadosomatic index (GSI) was 1.62±0.32% and that in the 15°C control was 7.01±0.46% at the end of the experiment. The highest GSI was 9.10 ± 0.35% in the 12L:12D photoperiod-treated fish. The highest GSI at 19°C was 15.03±0.86% in the 12L:12D photoperiod treatment. The initial hepatosomatic index (HSI) was 3.09±0.72% and that in the 15°C control was 3.88 ± 0.45%. The highest HSI was 4.00 ± 0.56% in the 15L:9D treated fish. The highest HSI at 19°C was 4.05±0.63% in the 12L:12D treated fish.
authors.affiliation: Inland Aquaculture Research Institute, NFRDI, Jinhae 645-806, Korea.
authors.forename: Sang-Gu
authors.initials: SG
authors.lastname: Lim
authors.affiliation: Inland Fisheries Research Institute, NFRDI, Gapyoung 477-815, Korea.
authors.forename: Jae Min
authors.initials: JM
authors.lastname: Baeck
authors.affiliation: Department of Aquaculture, Korea National College of Agriculture and Fisheries, Hwaseong 445-760, Korea.
authors.forename: Chul Won
authors.initials: CW
authors.lastname: Kim
authors.affiliation: Inland Aquaculture Research Institute, NFRDI, Jinhae 645-806, Korea.
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Kim
keywords: Photoperiod; Red marbled rockfish; Sebastiscus tertius; Water temperature