Open AccessLength-weight relationship and condition factor of eight fish species from the upper Araguari River, State of Amapá, Brazil
Author(s) -
Luiza Prestes,
Marcos Sidney Brito Oliveira,
Marcos TavaresDias,
Maria de Lourdes Soares,
Fabiana Calacina da Cunha
Publication year - 2019
Publication title -
acta scientiarum. biological sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.16
H-Index - 23
eISSN - 1807-863X
pISSN - 1679-9283
DOI - 10.4025/actascibiolsci.v41i1.46666
Subject(s) - allometry , fish <actinopterygii> , biology , asterias , zoology , ecology , fishery , starfish
The present study estimated parameters of the length-weight relationship (LWR) and allometric condition factor for eight fish species from the upper Araguari River, in the State of Amapá, Brazil. A total of 615 fish of eight species were analyzed: Acestrorhynchus falcatus, A. falcirostris, Ageneiosus inermis, Hemiodus unimaculatus, Hoplias aimara, Myloplus asterias, M. ternetzi and Tometes trilobatus. The allometric condition factor varied from 0.742 to 1.435. The coefficient of allometry ranged from 2.723 to 3.225. The coefficient of determination (R2) of the LWR ranged from 0.742 to 0.985. This is the first estimate of the length-weight relationship for fish from the Araguari River and the first record of these parameters for Myloplus ternetzi and Tometes trilobatus.