A time series analysis of Prochilodus nigricans landings caught by small-scale fisheries in the lower stretch of the Amazon River

Brazilian Journal of Biology

If. Santana¹  Cec. Freitas¹ 

[1] ,Universidade Federal do Amazonas Faculdade de Ciências Agrárias Departamento de Ciências PesqueirasManaus AM ,Brazil

关键词: fish landings;    curimatã;    small-scale fishery;    Rio Amazonas;    desembarque pesqueiro;    curimatã;    pesca artesanal;    Amazônia;   

DOI  :  10.1590/S1519-69842013000100007

来源: SciELO

【 摘 要 】

We developed a time series analysis using data on curimatã (Prochilodus nigricans), which landed in Santarém, a small city located on the right banks of the Amazon River. A 10-year record of monthly average catches per day of P. nigricans was analyzed using forecasting procedures in the open-source software GRETL 1.7.8. We established two models from the identifications made with the correlograms of hyperparametrization and seasonal differences. The autoregressive terms of the model reach three years, indicating that individuals of the species are being caught around the age of three. This may indicate that the curimatãs in the landings at Santarém from 1992 to 2002 were more than two years old, potentially a sign of a lack of fishing pressure on the lower age groups.

【 授权许可】

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