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

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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.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
dc.formatapplication/pdf
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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.languagespa
dc.publisherUniversidad de Costa Ricaen
dc.relationhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/12408/14724
dc.rightsacceso abierto
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 62, No 3 (2014); 1019-1029en
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 62, No 3 (2014); 1019-1029es
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
dc.subjectlong-termen
dc.subjectfisheriesen
dc.subjectlandingsen
dc.subjectCetengraulis edentulousen
dc.subjectestuaryes
dc.subjectlong-termes
dc.subjectfisherieses
dc.subjectlandingses
dc.subjectCetengraulis edentulouses
dc.titleLong-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Brazilen
dc.titleLong-term (2002-2011) changes on Cetengraulis edentulus (Clupeiformes: Engraulidae) fisheries in Guanabara Bay, Braziles
dc.typeartículo original

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