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

• Main Authors: June F Dias, Wellington S Fernandez, Thassya C.S. Schmidt
• Format: Article
• Language: English
• Published: Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso 2014-03-01
• Series: Latin American Journal of Aquatic Research
• Subjects: relación longitud-peso; Actinopterygii; Elasmobranchii; Bahía de Santos; Canal de Bertioga; Atlántico sudoccidental
• Online Access: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2014000100010&lng=en&tlng=en

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.