OXYGEN CONSUMPTION OF ROCK BREAM Oplegnathus fasciatus IN DIFFERENT SALINITY LEVELS AND TEMPERATURE DEGREES
ABSTRACT: Rock bream
Oplegnathus fasciatus is one of marine fish species with high commercial value
in the region of East Asia. However, studies on the metabolism related to
environmental factors for this species is still lacking. This study was therefore
aimed to assess the effects of salinity and temperature on oxygen consumption
(OC) of rock bream (TL: 26.9±0.6 cm, BW: 477.3±61.9 g) was observed by using
respiratory chamber to understand the optimal salinity and temperature for
culture of rock bream. Research was conducted in Pukyong National University,
Busan, South Korea. Four experimental groups were conducted to measure oxygen
consumption (OC) according to salinity (35, 25, 15, and 35→5 psu) and
temperature changes (15→20→25oC). The results showed that low salinity
exposures tend to decrease OC of rock bream (87.1, 78.3, 66.3, and 58.5 mg
O2/kg/h at 35, 25, 15, and 5 psu, respectively). Meanwhile, the oxygen
consumption of rock bream increased with increasing water temperatures (35 psu:
64.7, 104.0, and 175.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 25 psu:
45.8, 101.7, and 185.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 15 psu:
29.8, 103.3, and 155.5 mg O2/kg/h at 15, 20, and 25oC, respectively).
Penulis: Vitas Atmadi Prakoso Jun Hyung Ryu, Byung Hwa Min
Kode Jurnal: jpbiologidd160729
