Length–weight relationships of six freshwater fish species from the middle section of the Yangtze River basin, China

Abstract

The Yangtze River is the third largest river in the world and has rich aquatic biodiversity, including more than 400 species of fish (Zhang et al., 2020). However, biological information for most of the freshwater fish species in the area is still insufficient (Shao et al., 2016). Analyses of length-weight relationships (LWRs) is of great significance to fisheries research and management. LWRs allow between-region comparisons of the life histories of certain species (Moutopoulos & Stergiou, 2002) and estimation of the biomass of fish stocks when the same fishing method was used. This study estimated the LWRs of six freshwater fish species sourced from the middle section of the Yangtze River to provide basic biological information for research and management of this important freshwater ecosystem. | MATERIAL S AND ME THODSFish specimens were collected from the Wuhan section (30°5722′N; 114°6433′E) of the middle Yangtze River basin, China. Specimens were seasonally captured between September 2020 and August 2021, using a triple gillnet (30-50 m long, 2-4 m high, and mesh size, 2-3 cm). Fish were identified to the species level according to the protocol described by Ding (1994), and scientific names and authors of each fish species were checked in

Length-Weight Relationships of Four Fish Species from the Dongting Lake Basin, Central South China

“…Te coefcient of determination (r 2 ) exceeded 0.98, indicating robust positive correlations between length and weight for each species. Tese fndings align with previous research [15,16] and suggest that the models possess strong explanatory power for estimating LWR variations. Tey serve as a reliable resource for FishBase in the context of the Dongting Lake basin [9].…”

Effect of Different Plant Extracts on Olfactory Response of Bactrocera zonata Saunder and Postharvest Quality of Banana (Musa acuminata Colla)

“…Hence, the large specimens changed their body shape to become more elongated, or the small specimens were in a better nutritional state when they were sampled (Froese, 2006). Comparing this study to other studies (Ni et al, 2022;Dong et al, 2022), some deviations from parameter b for some species were identified. For example, the b values of Saurogobio dabryi were 3.017 and 2.96 stated by Ni et al (2022) and Liu et al (2013), respectively, whereas in this study, the b value is 2.741.…”