Every Fish Counts: Challenging Length–Weight Relationship Bias in Discards

نویسندگان

چکیده

Bycatch is a significant issue in global fisheries and understanding the length–weight relationships (LWR) of fish species can provide valuable insights for stock assessment management efforts. In this study, we estimated LWR 74 trawl fleet discards from Gulf Cadiz, including 24 which data had not been previously reported region. was calculated formula W = aLb where parameter intercept equation, related to body shape, b slope, indicates type growth species. A total 20,007 individuals 40 families were measured weighed. The most abundant Engraulis encrasicolus, Trachurus trachurus, Serranus hepatus, Sardina pilchardus, Capros aper, Diplodus bellottii, Sparidae family represented with ten b, represents growth, ranged 2.1607 3.7040. positive allometric trend observed 64% inclusion low sample size proved useful, particularly first reports new study area. However, caution should be taken when using these data, as estimates relationship may less precise. Further studies larger sizes are needed confirm results improve accuracy estimates. Overall, our findings contribute informing future research efforts

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ژورنال

عنوان ژورنال: Fishes

سال: 2023

ISSN: ['2410-3888']

DOI: https://doi.org/10.3390/fishes8050222