温度对不同规格橄榄蛏蚌能量收支的影响.

[Objectives]This study aimed to explore the effect of temperature on the energy metabolism of Solenaia oleivira with different sizes, further perfect the physiological energetics data of S. oleivira, and guide the large-scale artifical cultivation of S. oleivira in China. [Methods]The effects of five temperatures(15,20,25,30 and 35 ℃)on the oxygen consumption rate, ammonia excretion rate, ingestion rate and assimilation rate of juvenile, young and adult S. oleivira were studied through using the stagnant water method under controlled, and the energy budget equations under different temperatures were established. [Results]Temperature had significant effects on oxygen consumption rate, ammonia excretion rate, ingestion rate and assimilation rate of S. oleivira. The oxygen consumption rate, ammonia excretion rate,ingestion rate and assimilation rate of juvenile, young and adult S. oleivira all increased first and then decreased with the increase of temperature, where the oxygen consumption rate and ingestion rate reached the maximum values at 30 ℃,and the ammonia excretion rate and assimilation rate reached the maximum values at 25 ℃; the sizes had significant effects on oxygen consumption rate, ammonia excretion rate, ingestion rate and assimilation rate of S. oleivira. The ingestion rate, oxygen consumption rate and ammonia excretion rate of juveniles were significantly higher than those of young and adult S. oleivira. In their energy allocation strategies, the respiratory energy accounted for the largest proportion(22.01%-94.90%),followed by defecation energy(9.47%-59.69%),growth energy(-25.39%-56.33%),and excretion energy(0.37%-20.08%)successively. The proportion occupied by growth energy in the ingestion energy of S. oleivira increased first and then decreased with the increase of temperature, and reached the peak value at 20 ℃ or 25 ℃,and reached the lowest value at 15 ℃. The proportion of growth energy of juvenile, young and adult S. oleivira were high at 25-35 ℃,20-30 ℃ and 15-30 ℃, respectively, and the temperature ranges that they were adaptable to were expanded with their growth. [Conclusions]The metabolic physiology and ingestion physiology of S. oleivira were significantly influenced by the temperature and sizes. Within the temperature of 20-25 ℃,the proportion of growth energy in ingestion energy was high, so the temperature range was more suitable for their growth. The temperature range suitable for the growth of S. oleivira was gradually expanded with sizes increase. [ABSTRACT FROM AUTHOR]