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• W2378406164 abstract "Selincuo schizothoracini is an endemic Tibetan fish that has been turned into the basis of an economically important local fishery since 1992. However, there were no ecological studies on this species before. This paper presents information on growth features of Selincuo schizothoracini, including growth functions, growth index and inflexion point. Specimens were captured between 1997～1998 using 3 0～6 0 cm mesh nylon trifilament gill nets and throwing nets during. The standard length and total weight of each specimen was measured after captured. Individuals were sexed on the basis of morphological sex characters and/or the gonads of sacrificed specimens. Both annulus and otolith radii were measured along the vertical line from the outboard ridge to the nucleil of sectioned sagittae using a micrometer and binocular microscope. A total of 252 sectioned otoliths were measured. The regression line between sectioned otolith radius and standard length was fitted for each sex in order to back calculate standard length. Three growth models, the von Bertalanffy growth function, Gomperz growth function and decimal cubic function, were used to model the standard length growth of Selincuo schizothoracini using the weighted average of back calculated standard lengths. The von Bertalanffy growth equations were L t =484 1906[1-e -0 06839( t -0 6028) ] (♂) and L t =485 3285[1-e -0 0710( t -0 5679) ] (♀), Gomperz growth equations were L t =382 5614e -exp[-0 1997( t -0 5319) ] (♂) and L t =405 4271e -exp[-0 1889( t -5 7228) ] (♀) and the decimal cubic equations were L t =-25 7461+41 1394 t -1 5622 t 2 +0 0232 t 3 (♂) and L t =-24 2198+40 1444 t -1 3629 t 2 +0 0174 t 3 (♀), where t is age. Each of these growth functions provided a high goodness of fit and accurately described the growth of Selincuo schizothoracini well. Among them, the decimal cubic function had the highest goodness of fit. However, the von Bertalanffy growth function was extremely suited to model the growth of older animals (over 18 years), and the Gomperz growth function was especially suited to reveal the growth patterns of younger fish (under 12 years). Because the adults mostly remain in the lake and juveniles live in its affiliated rivers, the growth characteristics of Selincuo schizothoracini should reflect their migratory (river lake) life history. The weight length relationship could be described by the equations of W =0 00023 L 2 5303 (♂) ( n =371) and W =0 00046 L 2 4072 (♀) ( n =427), where W =total weight (g) and L =standard length (mm). The von Bertalanffy function was also used to model growth of total weight and could be described as W t =1336 9932[1-e -0 06839( t -0 6028) ] 2 5303 (♂) and W t =1439 4753[1-e -0 0710( t -0 5679) ] 2 4072 (♀). The growth patterns of male and female Selincuo schizothoracini were significantly different in the Gomperz growth function and the decimal cubic function, and also in the relationship between weight and length. The inflection points of total weight growth were 14 2 years (♂) and 12 9 years (♀)." @default.
• W2378406164 created "2016-06-24" @default.
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• W2378406164 date "2002-01-01" @default.
• W2378406164 modified "2023-09-25" @default.
• W2378406164 title "GROWTH OF SELINCUO SCHIZOTHORACINI (GYMNOCYPRIS SELINCUOENSIS) IN SELINCUO LAKE,TIBETEN PLATEAN~*" @default.
• W2378406164 hasPublicationYear "2002" @default.
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