Browsing by Author "Hanazaki, Natalia"

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Foraging Behaviour of Brazilian Riverine and Coastal Fishers: How much is Explained by the Optimal Foraging Theory?
(2011) Lopes, Priscila F. M.; Clauzet, Mariana; Hanazaki, Natalia; Ramires, Milena; Silvano, Renato A. M.; Begossi, Alpina
"Optimal Foraging Theory (OFT) is here applied to analyse the foraging behaviour of Brazilian artisanal fishers of the Atlantic coast (Itacuruçá and São Paulo Bagre villages) and of the inland Amazonian region (Jarauá 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 Jarauá 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."
Percepção e Uso dos Insetos Pelos Moradores da Comunidade do Ribeirão da Ilha, Santa Catarina, Brasil
(2010) Ulysséa, Mônica Antunes; Hanazaki, Natalia; Lopes, Benedito Cortês
"The perception and use of insects by the residents of Ribeirão da Ilha, Florianópolis, SC, Brazil. This work presents the perception of the residents of Ribeirão da Ilha, Florianópolis, Santa Catarina Island, about the insects and the distinct uses made of them. The study was carried out between August and October of 2007 through semi-structured interviews with 50 residents of the community. The ethnocategory ‘Insect’ is composed by 16 animals such as bees, cockroaches, beetles, spiders, snakes and others. This category is mostly seen negatively by the local population, or causes a sensation of fear and disgust. The knowledge about the use of insects is wide and it is related with ludic, decorative, alimentary and medicinal usages, as well as with forecasting the weather and earning money. However, nowadays only three uses are practiced by the community: consumption of honey in food, employment of bee stings to cure rheumatism, and butterflies for decoration."