Morphological Biology of Triplophysa(hedinichthys) yarkandensis(day) in Shaya Section of Tarim River

[Objective]This paper investigated the morphological biology of Triplophysa yarkandensis. [Method]From the year 2008 to 2010,we made the biology measurement and analysis of the samples of Triplophysa yarkandensis from Tarim River.[Result]The results showed that there were differences in the morphological characteristics and population characteristics of Triplophysa(hedinichthys) yarkandensis(day) in Shaya section of Tarim River,particularly in length and weight in the different sections at the same time. Shaya section;Y = 0.0473 X~(2.403 9),R~2 =0.8145.The relationship between length and shell weight;Y = 0. 047 3X~(2.403 9),R~2 = 0.814 5,n = 151.Length is linearly related to height;Y = 0.117 7 X +0.713 6,R~2 = 0.228 6;The relationship between length and head length;Y = 0.270 6 X -0.246 2,R~2 = 0.692 6;The relationship between length and peduncle length;Y = 0.202 1 X-0.352 8,R~2 = 0.382 7;The relationship between length and snout length;Y - 0.106 X-0.054 8,R~2 = 0.44;The relationship between length and mouth width and length of mouth respectively;Y_((length))= 0.087 3 X -0.035 5,R~2 = 0.382 5,Y_((width))=0. 091 4 X +0.016 4,R~2= 0.432 5;The relationship between length and chest length and abdomen length and rump length respectively;Y_((Chest))=0.18X-0.178 7,R~2 = 0.252 9,Y_((abdominal))= - 0.04 X + 2.247 7,R~2 = 0.004 9,Y_((rump))= 0.072 4 X +0.546 4,R~2 =0.042 6;The relationship between the inside beard length and the outside beard length and whiskers on the jaw length;Y_((in))= 0.0582X +0.2,R~2 - 0.097 3,Y _((outside))= 0.056 9 X +0.218 6,R~2= 0.215 7,Y_((jaw)) = 0.036 1 X + 0.542 1,R~2 = 0.029;fullness coefficient K =(W/L~3)×100,K = 1.4006 1;[Conclusion]The allometric growth of Triplophysa (hedinichthys) yarkandensis(day) in Shaya Section of Tarim River is not obvious but stable.The fishing is small and dredging is excessive,and the resource is severely damaged.