温度和规格对波纹巴非蛤耗氧率和排氨率的影响

本研究以波纹巴非蛤为实验材料，比较了温度和规格对其耗氧率和排氨率的影响。实验温度设为15、20、25和30℃，设立了大（A）和小（B）两种规格，其壳长分别为4.35 ± 0.19 cm 和3.53 ± 0.15 cm。结果表明温度对耗氧率和排氨率存在显著影响（P < 0.05）。规格对耗氧率存在显著影响（P > 0.05），而对排氨率影响不显著（P > 0.05）。在温度15 - 30℃之间，波纹巴非蛤的耗氧率随温度升高而增大。在15和20℃条件下，B组的耗氧率显著大于A组（P < 0.05）；在25和30℃条件下，B组的耗氧率大于A组，但差异不显著（P > 0.05）。在温度15 - 30℃之间，波纹巴非蛤的排氨率随温度升高而增大。在各温度条件下，两组排氨率没有显著差异（P > 0.05）。

Effects of temperature and size on the oxygen consumption and ammonia excretion rates of Paphia undulate

The present study reported that the effects of temperature and size on metabolism of Paphia undulate under controlled conditions indoors. The temperature levels were 15, 20, 25 and 30 oC, and two size groups designed as A and B were set with the mean shell length of 4.35 ± 0.15 cm and 3.53 ± 0.13cm, respectively. It was found that temperature had significant effects on oxygen consumption rate and ammonia excretory rate (P < 0.05). The size had significant effects on oxygen consumption rate (P < 0.05), while insignificant effects on ammonia excretory rate were detected (P > 0.05). The oxygen consumption rate of Paphia undulate increased with temperature increasing from 15 to 30 oC. At 15 and 20 oC, the oxygen consumption rate of the B group was significantly larger than that of the A groups (P < 0.05). At 25 and 30 oC, however, there were insignificant differences in oxygen consumption rate between the two size groups (P > 0.05). The ammonia excretory rate of Paphia undulate increased with temperature increasing from 15 to 30 oC. At 15, 20, 25 and 30 oC, there were insignificant differences in the ammonia excretory rate between the two size groups (P > 0.05).