Length-weight relationship of 73 fish species caught in the southeastern inner continental shelf region of Brazil

June F. Dias, Wellington S. Fernandez, Thassya C.S. Schmidt


DOI: https://doi.org/10.3856/vol42-issue1-fulltext-10

Abstract


The a and b parameters of the length-weight relationship (LWR) of the form W=aLb were estimated for 71 species of Actinopterygii and 2 Elasmobranchii, caught in the coastal region and inner shelf of southeastern Brazil. Estimates of b varied from 2.151 to 3.882. For the first time LWR for eight fish species is reported. Significant differences were observed among b values obtained for the same species caught in different ecosystems. Moreover, significant different results for b were observed among species caught in different ecosystems and between sexes of 12 species. Therefore, in order to obtain a reliable biomass estimate it is necessary to choose LWR data close in time and region with estimates for each sex.


Dias J, Fernandez W, Schmidt T. Length-weight relationship of 73 fish species caught in the southeastern inner continental shelf region of Brazil. Lat. Am. J. Aquat. Res.. 2017;42(1): 127-136. Available from: doi:10.3856/vol42-issue1-fulltext-10 [Accessed 12 Dec. 2019].
Dias, J., Fernandez, W., & Schmidt, T. (2017). Length-weight relationship of 73 fish species caught in the southeastern inner continental shelf region of Brazil. Latin American Journal of Aquatic Research, 42(1), 127-136. doi:http://dx.doi.org/10.3856/vol42-issue1-fulltext-10