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dc.contributor.author
Baigún, Claudio Rafael M.
dc.contributor.author
Minotti, Priscilla Gail
dc.contributor.author
Oldani, Norberto Oscar
dc.date.available
2015-04-28T16:00:49Z
dc.date.issued
2013-03
dc.identifier.citation
Baigún, Claudio Rafael M.; Minotti, Priscilla Gail; Oldani, Norberto Oscar; Assessment of sábalo (Prochilodus lineatus) fisheries in the lower Paraná River basin (Argentina) based on hydrological, biological, and fishery indicators; SOC BRASILEIRA ICTIOLOGIA; NEOTROPICAL ICHTHYOLOGY; 11; 1; 3-2013; 199-210
dc.identifier.issn
1679-6225
dc.identifier.uri
http://hdl.handle.net/11336/485
dc.description.abstract
This study assesses the change in fish exploitation patterns of the sábalo fisheries of the lower Paraná River basin based on hydrological, biological, and fishery indicators. From historical catch records, we recorded a shift from a lightly and moderate exploited status before 2001 to a heavily exploited one, as a result of the development of sábalo exports from 2001 onwards. Channel and floodplain connectivity indices demonstrated that the Paraná exhibited highly favorable hydrological conditions between 1972 and 1999 but more adverse conditions from 1999 to 2009, as a consequence of flood pulses reduction coincident with a fishing mortality increment. A total catch of 15,000 tons, including local consumption, regional market, informal sales, and exportation volumes, was estimated as the maximum sustainable catch. That level was instead exceeded 3 fold in 2004, in parallel with a decrease in the mean fish length from 48 to 42 cm, along with a reduction in both the mesh size from 16 to 12 cm and megaspawner proportion, and an increase of fishing mortality. Although growth overfishing was not noted, an analysis of the spawning potential ratio trend indicated that recruitment overfishing took place during 2005, since the fishing mortality rate was 4 times greater than the natural mortality rate. These observations suggest that less favorable hydrological conditions after 1999 coupled with a coincident high fishing pressure could have impacted the sábalo population biomass. Managementof sábalo fisheries requires to set aside a single economic vision of the resource use moving to an ecosystem-oriented approach that incorporate, among others components, the hydrological regime, species life history traits, fishing impacts on other species, and main stakeholders socioeconomic requirements as key elements for the preservation of fishery sustainability
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
SOC BRASILEIRA ICTIOLOGIA
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Artisanal Fisheries
dc.subject
Flood Pulse
dc.subject
Neotropical Rivers
dc.subject
Overfishing
dc.subject.classification
Otras Agricultura, Silvicultura y Pesca
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Assessment of sábalo (Prochilodus lineatus) fisheries in the lower Paraná River basin (Argentina) based on hydrological, biological, and fishery indicators
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.identifier.eissn
1982-0224
dc.journal.volume
11
dc.journal.number
1
dc.journal.pagination
199-210
dc.journal.pais
Brasil
dc.journal.ciudad
Porto Alegre
dc.description.fil
Fil: Baigún, Claudio Rafael M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); Argentina
dc.description.fil
Fil: Minotti, Priscilla Gail. Universidad Nacional de San Martín; Argentina
dc.description.fil
Fil: Oldani, Norberto Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.journal.title
NEOTROPICAL ICHTHYOLOGY
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.scielo.br/pdf/ni/v11n1/1679-6225-ni-11-01-0199.pdf
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1590/S1679-62252013000100023


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