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Long-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Brazil

Long-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Brazil

dc.creatorSampaio Franco, Ana Clara
dc.creatorShimada Brotto, Daniel
dc.creatorWai Zee, David Man
dc.creatorNeves dos Santos, Luciano
dc.date2014-05-06
dc.date.accessioned2016-05-03T15:30:58Z
dc.date.available2016-05-03T15:30:58Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/12408
dc.identifier10.15517/rbt.v62i3.12408
dc.identifier.urihttps://hdl.handle.net/10669/26980
dc.descriptionC. edentulus accounts for the major fishery resource in Guanabara Bay, but there are only few studies about its captures.This study analyzed the long term changes on C. edentulus catches in Guanabara Bay, focusing especially on temporal variation on capture effort, boat storage temperature, and fish price and size.We assessed the 2002-2011 database of fish landings at the pier of Rubi S.A., with records of year, month, total catch (kg), number of fish per kg, boat storage temperature (oC), and price per kg to boat owner (US$). Those variables differed among years and months (ANOVA; p<0.01) with strong yearXmonth interactions for all, probably related to C. edentulus reproductive and recruitment seasons and environmental conditions of Guanabara Bay. Generalized additive models revealed that high C. edentulus catches were associated withfew boat loadings of large-sized fishes, which were conserved in higher boat storage temperatures and attained high market prices. Our long-term study stressed that variations on C. edentulus fishery were related to changes on boat storage temperature, fish size, price paid per kg, and frequency of landings, and that these descriptors are correlated with C. edentulus ecological traits and high phytoplankton availability. Nevertheless, further studies should be performed to address whether less evident factors, such as the fluctuation of concurrent Sardinella brasiliensis stock, would explain the temporal dynamics of C. edentulus stocks in Guanabara Bay.en-US
dc.descriptionC. edentulus accounts for the major fishery resource in Guanabara Bay, but there are only few studies about its captures.This study analyzed the long term changes on C. edentulus catches in Guanabara Bay, focusing especially on temporal variation on capture effort, boat storage temperature, and fish price and size.We assessed the 2002-2011 database of fish landings at the pier of Rubi S.A., with records of year, month, total catch (kg), number of fish per kg, boat storage temperature (oC), and price per kg to boat owner (US$). Those variables differed among years and months (ANOVA; p<0.01) with strong yearXmonth interactions for all, probably related to C. edentulus reproductive and recruitment seasons and environmental conditions of Guanabara Bay. Generalized additive models revealed that high C. edentulus catches were associated withfew boat loadings of large-sized fishes, which were conserved in higher boat storage temperatures and attained high market prices. Our long-term study stressed that variations on C. edentulus fishery were related to changes on boat storage temperature, fish size, price paid per kg, and frequency of landings, and that these descriptors are correlated with C. edentulus ecological traits and high phytoplankton availability. Nevertheless, further studies should be performed to address whether less evident factors, such as the fluctuation of concurrent Sardinella brasiliensis stock, would explain the temporal dynamics of C. edentulus stocks in Guanabara Bay.es-ES
dc.formatapplication/pdf
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dc.languagespa
dc.publisherUniversidad de Costa Ricaen-US
dc.relationhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/12408/14724
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 62, No 3 (2014); 1019-1029en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 62, No 3 (2014); 1019-1029es-ES
dc.sourceRevista Biología Tropical; Vol 62, No 3 (2014); 1019-1029pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v62i3
dc.subjectestuaryen-US
dc.subjectlong-termen-US
dc.subjectfisheriesen-US
dc.subjectlandingsen-US
dc.subjectCetengraulis edentulousen-US
dc.subjectestuaryes-ES
dc.subjectlong-termes-ES
dc.subjectfisherieses-ES
dc.subjectlandingses-ES
dc.subjectCetengraulis edentulouses-ES
dc.titleLong-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Brazilen-US
dc.titleLong-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Braziles-ES
dc.typeartículo original


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