【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。更多还原

【Abstract】 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℃, and best in 22.00～28.00℃; and the suitable temperature range for the growth was 12.00～33.35℃ and best in 26.00～28.00℃. Under a temperature stress, the semi-lethal temperature at low end in 48 h and 96 h was(4.71±0.04) ℃ and(7.83±0.45) ℃, and at high end was(37.08±0.02) ℃ and(36.31±0.11) ℃,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 ℃ and salinity of 23.40～26.00 shall suit the best for survival and growth of triploid C. angulata juveniles.更多还原