Effect of water temperature and photoperiod on the oxygen consumption of four different strains of red seabream, Pagrus major OTHER

Title
Effect of water temperature and photoperiod on the oxygen consumption of four different strains of red seabream, Pagrus major
Alternative Title
Effect of water temperature and photoperiod on the oxygen consumption of four different strains of red seabream, Pagrus major
Author(s)
오승용; 최희정; 김민석; 박용주; 명정구; 권준영; 최철영
KIOST Author(s)
Oh, Sung Yong(오승용)Choi, Hee Jung(최희정)Kim, Min Suk(김민석)Myoung, Jung Goo(명정구)
Publication Year
2016
Abstract
We determined the effects of different water temperatures (15, 20, and 25ºC) and photoperiod cycles (24L:0D, 12L:12D, and 0L:24D) on the oxygen consumption of the offspring of a cultured Japanese strain (JJ), a selected Korean strain (KK), and intraspecific hybrid strains (JK and KJ) of red seabream, Pagrus major, under starvation conditions. The different fish strains, water temperatures, and photoperiod cycles had effects on the mean oxygen consumption of fish. Oxygen consumption increased with increasing water temperatures for all photoperiod treatments (p<0.001). Fish held in continuous darkness (0L:24D) used consistently less oxygen than fish exposed to continuous light ( p<0.05). The oxygen consumption of fish exposed to the light phase in a 12L:12D photoperiod was higher than that of fish in the dark phase of the 12L:12D cycle, and differences were significant in three of the strains: JJ (15ºC), KK (15 and 20ºC), and KJ (25ºC). The oxygen consumption of the inbred (JJ and KK) and intraspecific hybrid (JK and KJ) strains varied with differing water temperatures and photoperiod cycles. The JK strain displayed significantly higher oxygen consumption than the other strains under all experimental conditions except 15ºC with a 0L:24D photoperiod. The JK and KJ strains usually showed the highest and lowest oxygen consumption values, respectively, whereas the inbred strains exhibited intermediate values. Oxygen c and intraspecific hybrid strains (JK and KJ) of red seabream, Pagrus major, under starvation conditions. The different fish strains, water temperatures, and photoperiod cycles had effects on the mean oxygen consumption of fish. Oxygen consumption increased with increasing water temperatures for all photoperiod treatments (p<0.001). Fish held in continuous darkness (0L:24D) used consistently less oxygen than fish exposed to continuous light ( p<0.05). The oxygen consumption of fish exposed to the light phase in a 12L:12D photoperiod was higher than that of fish in the dark phase of the 12L:12D cycle, and differences were significant in three of the strains: JJ (15ºC), KK (15 and 20ºC), and KJ (25ºC). The oxygen consumption of the inbred (JJ and KK) and intraspecific hybrid (JK and KJ) strains varied with differing water temperatures and photoperiod cycles. The JK strain displayed significantly higher oxygen consumption than the other strains under all experimental conditions except 15ºC with a 0L:24D photoperiod. The JK and KJ strains usually showed the highest and lowest oxygen consumption values, respectively, whereas the inbred strains exhibited intermediate values. Oxygen c
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2344
Bibliographic Citation
한국해양생명과학회지, v.1, no.2, pp.109 - 116, 2016
Type
Article
Language
English
Related Researcher
Research Interests

Aquaculture,Fish stock Enhance,Artificial Reef,수산양식,수산자원조성,인공어초

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