Journal of Marine Sciences ›› 2015, Vol. 33 ›› Issue (2): 76-81.DOI: 10.3969/j.issn.1001-909X.2015.02.011

Previous Articles     Next Articles

Oxygen consumption rate and suffocation point of the juveniles for five species of mariculture fish

CHEN Wan-qing1,2, WU Hong-xi*2,3, WU Liang1,2, MA Jian-zhong2,3   

  1. 1. School of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China;
    2. Zhejiang Mariculture Research Institute, Wenzhou 325005, China;
    3. Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-Resources, Wenzhou 325005, China
  • Received:2015-02-09 Revised:2015-03-26 Online:2015-06-15 Published:2022-11-25

Abstract: In order to provide the theory basis for the scientific control of dissolved oxygen in the process of transportation and culture for juvenile fish, the oxygen consumption rate and the suffocation point of the juveniles for five species of mariculture fish (Plectropomus leopardusCromileptes altivelisEpinephelus fuscoguttatusEpinephelus akaara and the hybrid of Epinephelus Lanceolatus×Epinephelus fuscoguttatus♀) of which weight ranged from 53.6 g to 84.5 g under the condition of different temperature(20 ℃, 25 ℃and 30 ℃) were investigated using closed breathing experimental method. The results show that both the oxygen consumption rate and the suffocation point of the juveniles for five species of mariculture fish increase with increasing water temperature under the salinity condition of 30 degree. The oxygen consumption rates of Plectropomus leopardus are the highest, which are 0.15 mg/(g·h), 0.21 mg/(g·h) and 0.31 mg/(g·h) at the water temperature 20 ℃, 25 ℃ and 30 ℃ respectively, while the oxygen consumption rates of the hybrid of Epinephelus Lanceolatus×Epinephelus fuscoguttatus♀ are the lowest, which are 0.08 mg/(g·h), 0.15 mg/(g·h) and 0.16 mg/(g·h) at the same water temperature. The suffocation points of Cromileptes altivelis are the highest, they are 1.00 mg/L, 1.12 mg/L and 1.21 mg/L at the water temperature 20 ℃, 25 ℃ and 30 ℃ respectively, while the suffocation points of the hybrid of Epinephelus Lanceolatus×Epinephelus fuscoguttatus♀ are the lowest, they are 0.19 mg/L, 0.24 mg/L and 0.25 mg/L at the water temperature 20 ℃, 25 ℃ and 30 ℃ respectively.

Key words: Plectropomus leopardus, Cromileptes altivelis, Epinephelus fuscoguttatus, Epinephelus akaara, hybrid of Epinephelus Lanceolatus ♂×Epinephelus fuscoguttatus♀, oxygen consumption rate, suffocation point

CLC Number: