Data/hora: 01/06/2024 15:31:08

Provedor de dados: | 83
País: | Brazil
Título: | Estimates of population parameters and consumption/biomass ratio for fishes in reservoirs, Paraná State, Brazil
Autores: | Gubiani,Éder André; Gomes,Luiz Carlos; Agostinho,Angelo Antonio.
Data: | 2012-01-01
Ano: | 2012
Palavras-chave: | Ecosystem approach; Lentic ecosystems; Population's variables.
Resumo: | Consumption, natural mortality, and growth are important parameters for the construction for both fisheries and ecosystems models. We estimated k (growth constant of the von Bertalanffy's function), Loo 1(asymptotic length), Woo (asymptotic weight), Ar (caudal fin index), M (natural mortality), and Q/B (consumption/biomass ratio) for several fish species inhabiting reservoirs. We explored possible relationships among these parameters for 135 fish species sampled in thirty reservoirs in the State of Paraná, southern Brazil. Maximum length (Lmax) varied from 2.60 to 79.00 cm, Loo from 2.73 to 85.05 cm, Woo from 0.23 to 9,490.26 g, k from 0.01 to 2.38 yr-1, Ar from 0.03 to 3.60, M from 0.16 to 2.82 yr-1, and Q/B from 3.31 to 67.18. Significant correlations were observed between most pairs of parameters, except for Ar and k, Ar and Loo , and for M and Q/B. The estimates presented here may be useful for constructing Ecopath models, both in Brazil and other tropical regions, where the use of ecosystem modeling is growing.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100017
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252012000100017
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.10 n.1 2012
Fonte: | info:eu-repo/semantics/openAccess