摘要
为确定三倍体葡萄牙牡蛎(Crassostrea angulata)稚贝最适环境条件,研究了温度、盐度对其生长和存活的影响。结果表明:三倍体葡萄牙牡蛎稚贝适宜生存温度为11.05~33.81℃,最适宜生存温度为22.00~28.00℃;适宜生长温度为12.00~33.35℃,最适宜生长温度为26.00~28.00℃;温度胁迫条件下,该贝在48 h和96 h的半致死温度在低温端分别为(4.71±0.04)℃和(7.83±0.45)℃;高温端分别为(37.08±0.02)℃和(36.31±0.11)℃;存活率在高温端下降更迅速,表明稚贝对高温更敏感。在盐度耐受性方面:三倍体葡萄牙牡蛎稚贝适宜生存盐度为15.06~44.13,最适宜生存盐度为23.4~33.8;适宜生长盐度为11.76~45.39,最适生长盐度为23.40~26.00;该贝在48h和96h半致死盐度,低盐端分别为(4.68±0.97)和(9.35±0.35),高盐分别为(55.96±0.76)和(53.46±0.67)。综上,当水温为26.00~28.00℃,盐度为23.40~26.00时,更有利于三倍体葡萄牙牡蛎稚贝的存活和生长。研究结果可为三倍体葡萄牙牡蛎规模化养殖提供参考依据。
The effects of temperature and salinity on the growth and survival of triploid Crassostrea angulata juveniles were studied to determine the best temperature-salinity condition for growth.Results show that the suitable sea water temperature for its survival ranged 11.05~33.81°C,and best in 22.00~28.00°C;and the suitable temperature range for the growth was 12.00~33.35°C and best in 26.00~28.00°C.Under a temperature stress,the semi-lethal temperature at low end in 48 h and 96 h was(4.71±0.04)°C and(7.83±0.45)°C,and at high end was(37.08±0.02)°C and(36.31±0.11)°C,respectively.The survival rate decreased rapidly at high temperature,indicating that the juveniles were more vulnerable to a high temperature.In salinity aspect,the suitable and optimum salinities for the survival were 15.06~44.13 and 23.4~33.8,and for the growth were 11.76~45.39 and 23.40~26.00,respectively.Under a salinity stress,the semi-lethal salinity at low end in 48 h and 96 h was(4.68±0.97)and(9.35±0.35),and in high end was(55.96±0.76)and(53.46±0.67),respectively.Therefore,sea water temperature of 26.00~28.00°C and salinity of 23.40~26.00 shall suit the best for survival and growth of triploid C.angulata juveniles.
作者
展建强
蔡廷柱
郭希瑞
张柯馨
卢怡凝
刘志刚
ZHAN Jian-Qiang;CAI Ting-Zhu;GUO Xi-Rui;ZHANG Ke-Xin;LU Yi-Ning;LIU Zhi-Gang(College of Fisheries,Guangdong Ocean University,Zhanjiang 524088,China;Qingdao Frontier Marine Seed Co.Ltd.,Qingdao 266105,China;Guangdong Marine Invertebrate Science and Technology Innovation Center,Zhanjiang 524088,China)
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2023年第4期1158-1164,共7页
Oceanologia Et Limnologia Sinica
基金
南海经济动物种质创新与利用创新团队,2021KCXTD026号
广东省海产无脊椎动物科技创新中心,粤科函社农字(2017)179号。
关键词
葡萄牙牡蛎
三倍体
温度
盐度
生长
存活
稚贝
Crassostrea angulata
triploid
temperature
salinity
growth
survival
juveniles
