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Length‐weight relationship of 13 middle Uruguay River basin species, Southern Brazil
Author(s) -
Massaro Marthoni Vinicius,
Felden Juliana,
Pachla Lucas Adriano,
Antonetti Débora Alessandra,
ReynalteTataje David Augusto
Publication year - 2020
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.14022
Subject(s) - biology , fish <actinopterygii> , fishery , zoology
Length‐weight relationship (LWRs) were determined for 13 fish species from the Uruguay River. The fish were caught in six locations and sampled at each location during each season, totaling 72 samplings, starting in May 2016 and ending in February 2018. Various materials were used such as gillnets (15; 20; 25 30; 40 and 80 mm, triple mesh 150.30.150 150.40.150 and 150.50.150 mm, 8 mm trawl). We also used two longlines, 100 m long, 30 hooks each (hooks 5/0 and 12/0), baited with small fish, corn and snail. Length‐weight relationship were adjusted appropriately for all species ( r 2 > .95). The b values of the LRW equations ranged from 2.38 in Steindachnerina brevipinna to 3.62 in Pimelodus atrobrunneus .