Artes de pesca artesanal nos reservatórios de barra bonita e bariri: Monitoramento pesqueiro na bacia do médio rio tietê

dc.contributor.authorDavid, Gianmarco Silva
dc.contributor.authorde Castro Campanha, Paula Maria Gênova
dc.contributor.authorMaruyama, Lídia Sumile
dc.contributor.authorCarvalho, Edmir Daniel [UNESP]
dc.contributor.institutionPólo Centro Oeste de Jaú – UPD de Jaú
dc.contributor.institutionPesquisador Científico do Instituto de Pesca - IP /APTA/ SAA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.abstractThe fishing gears used in Barra Bonita and Bariri reservoirs, Middle Tietê River, were evaluated in order to provide objective information to assess the need for a revision of the legal framework governing this activity. Monitoring of the fishery production was carried out in the main fishing nuclei, collecting data about the catch composition (number and biomass), selectivity of fishing gear and the by-catch. Information about the predominant fishing arts, catch per effort unit and seasonality of fish production, as well as environmental information, were also obtained. Monthly field campaigns for sampling were done, when the researchers followed the fishing activity, making a detailed record of the catches and the employed fishing gears. It was found that gill net is the least selective among the four modalities practiced, but it is the only one which has legal support. Higher selective fishing gears, such as trawls, cast nets and fishing beat, act mainly on tilapia, a non-native species whose exploitation could be considered beneficial to the conservation of the native fish populations through the reduction of the interspecific competition for resources. Thus it is suggested the restriction of the use of less selective fishing equipment and the liberation of fishing gear that targets the non-native species of cichlids, aiming to reduce the fishing pressure on indigenous species.en
dc.description.affiliationPesquisador Científico da Agência Paulista de Tecnologia do Agronegócio /APTA Pólo Centro Oeste de Jaú – UPD de Jaú
dc.description.affiliationPesquisador Científico do Instituto de Pesca - IP /APTA/ SAA
dc.description.affiliationInstituto de Biociências UNESP/Botucatu
dc.description.affiliationUnespInstituto de Biociências UNESP/Botucatu
dc.identifier.citationBoletim do Instituto de Pesca, v. 42, n. 1, p. 29-49, 2016.
dc.relation.ispartofBoletim do Instituto de Pesca
dc.rights.accessRightsAcesso restrito
dc.subjectCatch methods
dc.subjectFishing gear
dc.subjectNile tilapia
dc.subjectOreochromis niloticus
dc.subjectSao Paulo-Brazil
dc.titleArtes de pesca artesanal nos reservatórios de barra bonita e bariri: Monitoramento pesqueiro na bacia do médio rio tietêpt
dc.title.alternativeFishing gears in barra bonita and bariri reservoirs: Fisheries monitoring in the middle tiete river basinen