Fish stock assessment of piraputanga Brycon microlepis in the Cuiabá River basin, Pantanal of Mato Grosso, Brazil

Mateus, Lúcia Aparecida de Fátima; Estupiñán, Guillermo Moisés Bendezú

doi:10.1590/s1519-69842002000100018

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…The decrease in total caught, changes in species ranking, and the "fishing-up" found in this study cannot be credit only to overfishing (Catella, 2001;Vaz, 2001;Mateus & Estupiñán, 2002;Mateus, 2003;Peixer, 2003;Penha, 2003;Mateus & Petrere, 2004). They seem to result from a complex interaction among overfishing, environmental degradation, changes in market preferences, and restrictive legal fishing regulations.…”

Section: P R O O F Smentioning

confidence: 62%

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Fishing resources in the rio Cuiabá basin, Pantanal do Mato Grosso, Brazil

2004

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The rio Cuiabá is one of the most important tributaries of the upper rio Paraguay basin that form the Pantanal wetlands. The fishing resources of the rio Cuiabá basin were studied based on landing data obtained from the Fish Market of the city of Cuiabá, State of Mato grosso, Brazil. A description is given of the composition and origin of the 2000 and 2001 catch. The rio Cuiabá is the main source of fish for Cuiabá, although some fish sold locally comes from the rio Paraguay. The 2000-2001 catch consisted mainly of migratory species. The main landed species were the pimelodids pintado -Pseudoplatystoma corruscans, cachara -Pseudoplatystoma fasciatum, and jaú -Paulicea luetkeni, and the characiforms pacu -Piaractus mesopotamicus, piraputanga -Brycon microlepis, piavuçu -Leporinus macrocephalus, and dourado -Salminus brasiliensis. Large catfishes (Pimelodidae) represented 70% of the landed fish, among which pintado was the most abundant. The data indicate that current catches are smaller than those recorded in the early 1980s and fish are caught far off the urban zone. Moreover, although the number and composition of species caught were similar to those of the 80s, the distribution of species abundance has changed. Currently, fisheries catch more carnivorous species than fish from lower trophic levels. These findings cannot be credited solely to overfishing, but appear to result from a complex interaction of factors, i.e., environmental degradation, changes in market preferences, and restrictive legal fishing regulations.O recurso pesqueiro da bacia do rio Cuiabá, um dos mais importantes tributários da bacia do Alto Paraguai, formadora do Pantanal, foi estudado a partir dos dados de desembarque de pescado obtidos no Mercado do Porto de Cuiabá, Mato Grosso, Brasil. São descritas a composição e procedência das capturas para os anos de 2000 e 2001. O rio Cuiabá é a fonte dominante de pescado para a cidade de Cuiabá, mas uma parte do pescado comercializado localmente é oriunda do rio Paraguai. Além disso, atualmente o pescado vem de regiões mais distantes da zona urbana. Constatou-se que a pesca incide basicamente sobre espécies migradoras. As principais espécies capturadas foram os pimelodídeos pintado -Pseudoplatystoma corruscans, cachara -Pseudoplatystoma fasciatum e jaú -Paulicea luetkeni e os caraciformes pacu -Piaractus mesopotamicus, piraputanga -Brycon microlepis, piavuçu -Leporinus macrocephalus e dourado -Salminus brasiliensis. Os grandes bagres (Pimelodidae) foram os responsáveis por 70% do pescado desembarcado no período de estudo, dentre os quais o pintado foi a espécie mais capturada. Os dados indicam que as capturas atuais estão bem aquém daquelas registradas no início da década de 80. Além disso, apesar do número e composição de espécies capturadas serem similares àqueles da década de 80, a distribuição da abundância mudou. Atualmente a pesca captura mais espécies carnívoras do que espécies de níveis tróficos inferiores. Estes achados não podem ser creditados somente a sobrepesca, mas parecem resultar ...

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Section: P R O O F Smentioning

confidence: 62%

“…Because the recent data on the evaluation of stocks indicate that, with the exception of pacu (Vaz, 2001), some of the main species do not show signs of overfishing (Mateus, 2003;Mateus & Estupiñán, 2002;Mateus & Petrere, 2004;Penha, 2003), the drop in the catch from the rio Cuiabá appears to be …”

Section: P R O O F Smentioning

confidence: 99%

Fishing resources in the rio Cuiabá basin, Pantanal do Mato Grosso, Brazil

2004

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“…In the Pantanal, Brycon microlepis (Perugia, 1897) depends on the flooded areas for breeding (Mateus and Estupiñán, 2002). Conditions in the spawning season must be favorable for the survival and growth of the young, because of the availability of dissolved oxygen, adequate food for the initial developmental phases, and minimizing the risks of predation on the young (Vazzoler, 1996).…”

Section: Discussionmentioning

confidence: 99%

Reproduction of Pirapitinga do Sul (Brycon opalinus Cuvier, 1819) in the Parque Estadual da Serra do Mar-Núcleo Santa Virgínia, São Paulo, Brazil

Gomiero

Braga

2007

Braz. J. Biol.

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The objective of the study was to characterize seasonally and locally the reproduction of Pirapitinga do Sul (Brycon opalinus). The study area included three rivers (Paraibuna, Ipiranga, and Grande) in the Santa Virgínia Unit of the Serra do Mar State Park, State of São Paulo, Brazil. Breeding occurred in spring, summer, and autumn. The L 50 and the L 100 of this species were 16 to 18 cm and 26 to 28 cm, respectively. Spawning was total, with synchronous development in two groups. The size of mature oocytes was 1,346.4 µm, reaching a maximum of 2,570.4 µm, with a mean fecundity of 9,190.5 oocytes. This species has external fertilization, is non-migratory, and lacks parental care of the young. Preservation of the Pirapitinga do Sul depends, in great part, on maintaining water quality, preservation of the riverine forests, and access to breeding areas.Keywords: Brycon opalinus, reproduction, fecundity, Brazil. Reprodução da Pirapitinga do Sul (Brycon opalinus

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“…Considering that the per capita demand for seafood products in Malaysia is one of the highest in Asia at over 50 kg/year, which is increasing with a growing population (Teh 2012), it is imperative to determine the stock position of commercially important fish species in order for the implementation of sound fisheries policies and sustainability. Of all the tools used for estimating these parameters, FiSAT (FAO-ICLARM Stock Assessment Tools) is one of the most common (Abdussamad et al 2010;Allam 2003;Balli et al 2011;Francis & Samuel 2010;Gayanilo et al 1996;Jaiswar et al 2003;Mateus & Estupiñán 2002). This is likely because several important population parameters such as asymptotic length (L∞) and growth coefficients (K), mortality (natural and fishing) as well as their level of exploitation (E) can be estimated from only length-frequency data.…”

Section: Introductionmentioning

confidence: 99%