盐度和碱度对塔里木河叶尔羌高原鳅毒性的研究.

[Objective] This paper aimed to the tolerance and behavioral changes of Triplophysa (Itedinichthys) yarkandensis (Day) under the salinity and alkalinity.[Method] Triplophysa (Itedinichthys) yarkandensis (Day) was used as objects, defining a low-temperature environment (13 ± 0.5) Ti, their preferences under the gradient concentrations of salinity (S)/alkalinity (Aik ) were determined, and the effects of salinity (S)/alkalinity (Aik) toxicity on the Triplophysa (iledinichthys) yarkandensis (Day) in Tarim river were studied.[Result] When Aik was around pH 6.5 -7.5 with temperature(13 ± 1 ) Ti, the TC%) of S to T.(H.)yarkandensis (Day) were 20.0870 %c, 16.2490 %c, 13.3300 %c, 12.5680 %c and 12.3930 %c at 12, 24, 48, 72 and 96 hours, respectively, and the safe S was 4.1676 %c.The LC50 of Alkto T.(H.) yarkandensis (Day) were 12.1590, 9.9776, 9.5076, 8.6485 and 4.5220 g · I.1 at 12, 24, 48, 72 and 96 hours, respectively, and the safe Aik was 2.7179 g · L-l.Among them, 4 %c was the main preference area, and 3 -4 g · L-l was the range of Aik preference.In conclusion, although the low temperature of S/Alk toxicity tolerance slowed, behavior preferences were also different of T.(II.) yarkandensis (Day), and the S/Alk stress of Tarim water salinization seriously affected the growth and development of T.(II.) yarkandensis (Day).[Conclusion]The present study would provide a scientific basis for the enhancement and protection of T.(II.) yarkandensis (Day). [ABSTRACT FROM AUTHOR]