Analysis of Cyprinus carpio, Prochilodus cearensis and Colossoma macropomum behavior in policulture experiment, based on the condition factor

Authors

  • Maria de Fátima Pereira de SÁ Professora - Departamento de Biologia/CCBi - Universidade Federal de Alagoas
  • Geraldo BARBIERI Pesquisador Cientifico -  Instituto de Pesca São Paulo - Centro Estudos Bacias Hidrográficas
  • José Roberto VERANI Departamento de Hidrobiologia - Universidade Federal de São Carlos

Keywords:

fishculture, condition factor, length-weight relationship, Cyprinus carpio, Prochilodus cearensis, Colossoma macropomun

Abstract

This study presents results of the quantitative analysis applied to data from a semi-intensive polyculture experiment carried out with the species Cyprinus carpio L., 1758, Prochilodus cearensis Steindachner, 1911 and Colossoma macropomum Cuvier, 1818.Two different treatments: Tl = ration (Tanks I and II) and T2 = ration + chicken manure (Tanks III and IV). Environmental variables (temperature and chlorophyll-a) were monitored during the experimental period. The length-weight relationship can be described by the equation WT = a LTb. Only one b value was estimated for each species which was used to calculate the condition factor values (K = WT/LTb). The relative condition factor (Kn = Wobs/Wcal) was determined too. During the culture period, Colossoma macropomum has shown higher change of condition factors (K and Kn) rather than the other two species studied

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Published

2018-10-27

Issue

Vol. 26 No. 2 (2000): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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