Produção Nacional
Revisado por pares
Foraging behaviour of Brazilian riverine and coastal fishers: How much is explained by the optimal foraging theory?
2011; Medknow; Volume: 9; Issue: 3 Linguagem: Inglês
10.4103/0972-4923.86994
ISSN0975-3133
AutoresPriscila F. M. Lopes, Mariana Clauzet, Natália Hanazaki, Milena Ramires, Renato Azevedo Matias Silvano, Alpina Begossi,
Tópico(s)Marine and fisheries research
ResumoOptimal Foraging Theory (OFT) is here applied to analyse the foraging behaviour of Brazilian artisanal fishers of the Atlantic coast (Itacuruca and Sao Paulo Bagre villages) and of the inland Amazonian region (Jaraua and Ebenezer villages). Two OFT predictions are tested. Hypotheis1: A fisher who travels to more distant sites should return with more fish, and Hypothesis 2: The further a fisher goes, the longer s/he should stay fishing in a patch. OFT did not explain fishers' behaviour (non-significant regressions for coastal villages) or explain it in specific seasons (low water season for one Amazonian village: H1 r 2 =24.1; H2 r 2 =37.2) and in specific habitats (e.g., lakes and backwaters in Jaraua village, Lakes: H1 r 2 =13.5; H2 r 2 =24.0; Backwaters: H1 r 2 =34.4; H2 r 2 =46.5). The findings can indicate areas or seasons that are under higher fishing pressure, when fishers try to get the best out of a situation without any concern about resource conservation. By knowing the variables that influence fishers' decision-making processes, management initiatives may be more fine-tuned to the local reality and are thus more likely to succeed.
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