Affiliation:
1. Universidade Federal do Amazonas, Brasil
Abstract
Abstract This study estimated the length–weight relationships of 16 fish species occurring close to the shores of sandy beaches along the lower Negro River basin, Brazilian Amazon. The specimens were captured for one day each month, in October to November 2016, early in the morning and early evening, using trawl net (20 m taken for standard length (SL – 0.1 cm precision) and total weight (TW – 0.01 g precision). The parameters a and b of the equation WT = a.LTb were estimated. The a values ranged from 0.0018 to 0.0226 and b values ranged from 2.5271 to 3.3244. This study also provides new data on of maximum lengths for six species, Amazonsprattus scintilla, Brycon pesu, Moenkhausia megalops, Pachyurus paucirastrus, Reganella depressa and Trachydoras microstomus, and new reports of the LWRs parameters of 15 fish species.
Subject
General Agricultural and Biological Sciences
Reference29 articles.
1. Checklist of the Freshwater Fishes of South and Central America;ALBERT J.S.,2003
2. Checklist of the Freshwater Fishes of South and Central America;ALBERT J.S.,2003
3. Checklist of the ichthyofauna of the Rio Negro basin in the Brazilian Amazon;BELTRÃO H.;ZooKeys,2019
4. Stock assessment of the peacock bass Cichla temensis (Humboldt, 1821), an important fishing resource from the middle Negro river, Amazonas, Brazil;CAMPOS C.P.;Brazilian Journal of Biology = Revista Brasileira de Biologia,2020
5. Distribuição e estrutura trófica das assembleias de peixes em praias do Rio Solimões/Amazonas, Brasil;CLARO-JUNIOR L.H.,2007