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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2020, Vol. 8, Issue 3, Part E

Length-weight relationships and condition factor of the predatory fish, Cichla pleiozona and Serrasalmus rhombeus, from two tropical reservoirs, Amazon basin, Brazil


Author(s): Regiane Mônica dos Reis, Luzia da Silva Lourenço, Hugmar Pais da Silva, JhonyVendrusclo, Izaias Médice Fernandes

Abstract: The aim of this study was to estimate the parameters of the weight-length relationship and the relative condition factor for Cichla pleiozona and Serrasalmus rhombeus in Branco River, Madeira river basin, Brazilian Amazon. For this, biometric data were collected between March 2018 and November 2019 in two reservoirs. While C. pleiozona showed isometric growth (b = 3), S. rhombeus showed positive allometric growth (b > 3). For C. pleiozona, the value for parameter b varied from 3.06 to 3.08 in Cachimbo Alto and Ângelo Cassol, respectively, while for S. rhombeus b value was 3.15 in Cachimbo Alto and 3.29 in Angelo Cassol. The relative condition factor was the same in both reservoir for C. pleiozona (1.006) and S. rhombeus (1.017), while wet season showed lower value then dry season for both species. The parameters of the weight-length relationship and the relative condition factor showed no spatial or temporal variation.

Pages: 355-360  |  168 Views  10 Downloads

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How to cite this article:
Regiane Mônica dos Reis, Luzia da Silva Lourenço, Hugmar Pais da Silva, JhonyVendrusclo, Izaias Médice Fernandes. Length-weight relationships and condition factor of the predatory fish, Cichla pleiozona and Serrasalmus rhombeus, from two tropical reservoirs, Amazon basin, Brazil. Int J Fish Aquat Stud 2020;8(3):355-360.
International Journal of Fisheries and Aquatic Studies