The effects of various seawater temperature and salinity on clearance rate,filtration rate and absorption efficiency of Pteria penguin were investigated by adopting the measures of experimental ecology,which would provide both insight into culturing capacity and physiology of cultivating pearl of Pteria penguin and reference for marine ecosystem restoration.The results were as follows:(1) the temperature had distinct effect on the clearance rate,filtration rate and absorption efficiency of Pteria penguin(P<0.01).The clearance rate,filtration rate and absorption efficiency of Pteria penguin increased with increasing water temperature under test temperature(14-32 ℃),which reached the peak at 29 ℃ and were 0.87 L/h,4.17 mg POM/h and 84.01%,respectively.Contrasting to 29 ℃,the clearance rate,filtration rate and absorption efficiency of Pteria penguin began to decrease at 32 ℃,however,these three physiological indicators remain at higher level,suggesting that Pteria penguin is typical of the tropical and subtropical species and possesses good adaptability to high temperature.The more suitable sea water temperature for the feeding of Pteria penguin was 23-32 ℃,and the optimum sea water temperature was about 29 ℃.(2) the salinity had distinct effect on the clearance rate,filtration rate and absorption efficiency of Pteria penguin (P<0.01).The clearance rate,filtration rate and absorption efficiency of Pteria penguin increased with increasing water salinity under test salinity(19-37),which reached the maximum value with 0.36 L/h,1.87 mg POM/h and 76.95% at 31,respectively.The clearance rate,filtration rate and absorption efficiency of Pteria penguin began to decrease at 34 and 37,however,these three physiological indicators remain at higher level when salinity was at 34,suggesting that Pteria penguin is typical of narrow salinity shellfish and possesses good adaptability to high salinity.The more suitable sea water salinity for the feeding of Pteria penguin was 25-34,and the optimum sea water salinity was about 31.