Length-weight relationships of five fish species from the Yalong and Wujiang rivers (tributaries of Yangtze River, China)

Abstract

Summary Length‐weight relationships (LWRs) were determined for five endemic fish species from the Yalong and Wujiang rivers (tributaries of the Yangtze River, China): Folifer brevifilis (Peters, 1881), Pelteobagrus ussuriensis (Dybowski, 1872), Schistura fasciolata (Nichols & Pope, 1927), Triplophysa daqiaoensis (Ding, 1993) and Triplophysa orientalis (Herzenstein, 1888). Samples were obtained between April 2004 and July 2014 using various fishing gear (set nets, drift gill nets, fish cages, hook and electro fishing). For each specimen from each species the sample size was recorded, total length and weight were measured and the LWR determined. Further, the 95% confidence intervals of a and b, and coefficient of correlation were estimated. Prior to this study, the LWRs for these five species were unknown.

Length-weight relationships of three fish species from the Yalong River, China

“…There are several explanations for these differences, e.g. sample size structure, season, sex, gonad maturity, and presence of juveniles in the present study (Froese, 2006;Pan et al, 2016), all factors that were not explored in this work.…”

Length-weight relationships of four fish species from the Niulan River, China

“…The b value (2.961) of O. bidens in the present study was higher than that (3.261) of specimens from the Liuxihe national aquatic germplasm resources conservation area (Li, Xu, & Huang, ). The differences in the b value from same fish species are perhaps caused by a number of factors, including sex, gonad maturity, growth phase, season, stomach fullness, sampling size and length range (Froese, Tsikliras, & Stergiou, ; Pan, Xie, Yang, Tang, & Qiao, ; Pan et al., ; Xiong et al., ).…”

Length-weight relationships for four species in the Dogxung Zangbo River, a main tributary of the Yarlung TsangpoRiver, Tibet, China

“…() ( b = 2.847) and Lin, Zhang, Fan, Li, and Zhou () ( b = 3.18), but higher than that of Pan et al. () ( b = 2.56), the b value estimated of Schizothorax oconnori was respectively higher than that of Lin et al. () ( b = 2.88).…”