Produção Pesqueira Em Porto Velho, Rondônia (1984-89) - Alguns Aspectos Ecológicos Das Espécies Comercialmente Relevantes.

Boischio, Ana

doi:10.1590/1809-43921992221172

Cited by 17 publications

(15 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In these studies the highest landings were observed during low-water periods associated with retraction of the physical environment, when fish are confined to open waters in lakes, making them easier to catch. The reduction in fish landings when water levels are higher and at the beginning of the falling-water period are common characteristics throughout the Amazon [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Fish landings in Barcelos, in the Middle Negro River Region, Amazonas

Inomata¹,

Freitas²

2015

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

The purpose of this study was to gather information about fish landings in Barcelos, in the Middle Rio Negro region. Data were collected from fishing boats at weekends and from stalls where fish were processed and sold during the week. The results showed that in the period from February 2012 to January 2013, 56.0 tons of fish were landed and that average landings were 3.6 ± 2.2 tons/month and 1.1 ± 0.7 tons/month for fishing boats and for small boats with outboard motors, respectively. Pacu (subfamily Myleinae), aracu (family Anastomidae) and tucunaré (Cichla spp.) were the main species caught and accounted for approximately 50% of the landings. The Demeni River, Lake Anauali and Zamula streamlet were the most exploited fishing areas. Fishing boats exploited the lakes in the dry and flood seasons and the rivers in all seasons of the hydrological cycle, with a slight predominance in the falling-water season. Streamlets were also exploited by fishing boats in all the seasons apart from the flood season. Lakes were the preferred environment for small boats with outboard motors in the dry season. While rivers were exploited by these boats throughout the year, streamlets were exploited mainly in the rising-and fallingwater seasons. There was a decrease in fishing effort in the flood season and an increase in the dry season. Average CPUE was 21.9 and 23.9 kg/fisherman/day for fishing boats and for small boats with outboard motors, respectively.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The fishing fleet exploited 68 fishing areas in 39 rivers, 18 lakes and 11 streamlets (11). Of the rivers exploited, the Demeni River had the most fishing trips (24.8%), followed by the Aracá River (22.3%) and Itu River (20.7%).…”

Section: Fishing Areas Exploitedmentioning

confidence: 99%

Fish landings in Barcelos, in the Middle Negro River Region, Amazonas

Inomata¹,

Freitas²

2015

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

show abstract

“…A avaliação da importância do tambaqui nas pescarias das bacias dos rios Amazonas e Orinoco foi baseada nos dados de desembarque publicados por Novoa & Ramos (1978) na Ven ezuela, Barthem et ai (1995) no Peru, INPA (1995) na Colômbia, Lauzanne et ai (1990) na Bolívia e Petrere Jr. (1978b, 1983e 1985, Goulding (1979), Merona & Bittencourt (1988), Boischio (1992), Barthem (1995Barthem ( , 1999aBarthem ( e 1999b, Barthem et ai (1995), Ruffino & Isaac (1994) e Batista (1998) no Brasil.…”

Section: Análise Da Pesca Do Tambaqui Nas Bacias Dos Rios Amazonas E unclassified

“…A captura do tambaqui nesta cidade foi de 58 toneladas ou 10% do desembarque total em 1977, período em que o esforço de pesca estava direcionado para os bagres (Goulding, 1979). Na década de 80, o consumo local passou a sustentar a maior parte da atividade pesqueira e o tambaqui se tornou então a espécie de maior importância econômica da cidade, apresentando uma captura média de 236,5 toneladas anuais ou 20% do to tal desembarcado no período entre 1984 e 1989 (Boischio, 1992) (Tab. 1).…”

Section: Análise Da Pesca Do Tambaqui No Médio Solimõesunclassified

A pesca do Tambaqui, Colossoma macropomum, COM enfoque na área do médio Solimões, Amazonas, Brasil

Costa¹,

Barthem

Bittencourt

2001

Acta Amaz.

View full text Add to dashboard Cite

Resumo -Este trabalho avalia a importância da pesca do tambaqui (Colossoma macropomum) nas bacias dos rios Amazonas e Orinoco e, mais especificamente, na região do médio Solimões. As análises foram baseadas em dados de literatura e da pesca praticada pela frota de Tefé no médio Solimões, coletados no mercado de Tefé, entre 1991 e 1995, e a bordo de embarcações da frota pesqueira comercial, entre 1994 e 1995. A importância relativa da espécie pode alcançar 21% da produção de pescado em alguns centros urbanos da bacia do Orinoco, na Venezuela; 8% da Amazônia peruana; e 35% da Amazônia boliviana. No Brasil, na região do rio Madeira, a importância relativa do tambaqui subiu de 10% em 1977 para 32% entre 1984 e 1989. Em Manaus, a espécie já respondeu por 44% do pescado desembarcado. Porém, a proporção de tambaqui desembarcado nesta cidade sofreu uma grande diminuição nos anos 80 e 90, chegando a representar apenas 2,5% do total desembarcado. No médio Solimões, região apontada como a principal área de pesca para esta espécie, são utilizados diversos tipos de aparelhos e explorados diferentes habitats, de acordo com a flutuação do nível da água dos rios. A pesca do tambaqui nesta região é realizada principalmente em lagos, através de malhadeira e rede de cerco, incidindo sobre peixes jovens (<55 cm). O ambiente formado pela caída de terras nos meandros do rio ("enseada-pausada") é importante para a captura de indivíduos de maior porte. Palavras-Chaves:Colossoma, pesca, Solimões, Amazonas, várzea. Tambaqui, Colossoma macropomum, Fisheries with Focus on an Area on Middle Amazon River, Amazonas State, BrazilAbstract -This study evaluates the importance of tambaqui (Colossoma macropomum) in data from the fishing fleet of Tefé, a city in the middle Solimões River. Data were collected boats. The relative importance of this species can reach 21% of catches in some landing places of the Orinoco basin, in Venezuela; around 8% in the Peruvian Amazonia; and 35% in Bolivian Amazonia. In Brazil, catches of tambaqui increased in the Madeira River region from 10% in 1977 to 32% between 1984 and 1989. In Manaus, this species composed up to 40% of the landed fish in the past. In the 80's and 90's, the proportion of tambaqui in landed fish has suffered a drastic reduction, declining to as little as 2,5%. In the middle Solimões, which is the main area of fisheries for this species, catches are made with various fishing gears and in different habitats, accordingly with water level fluctuations. In this region, tambaqui fisheries concentrate inside lakes, where the main gears used are gillnet and purse seine, and the catch is composed of the young fish (<55 cm). The habitats created by river bank collapse ("enseada-pausada") are

show abstract

“…The prevalence of curimatã in the landings remains high; between 1994 and 2003, curimatã was responsible for 18 to 30% of the total catch landed in Manaus (Batista and Petrere Junior, 2003). The landings of this species are also important in Santarém, located in the Lower Amazon River (Ruffino and Isaac, 1994); in Porto Velho, along the Madeira River (Boishio, 1992); and in small cities in the state of Amazonas (Batista and Petrere Junior, 2007). In the Central Amazon, curimatã are mainly captured using purse seine and gillnets (Petrere Junior, 1978;Batista and Petrere Junior, 2007).…”

Section: Introductionmentioning

confidence: 99%

A time series analysis of Prochilodus nigricans landings caught by small-scale fisheries in the lower stretch of the Amazon River

Santana

Freitas

2013

Braz. J. Biol.

View full text Add to dashboard Cite

We developed a time series analysis using data on curimatã (Prochilodus nigricans), which landed in Santarém, a small city located on the right banks of the Amazon River. A 10-year record of monthly average catches per day of P. nigricans was analyzed using forecasting procedures in the open-source software GRETL 1.7.8. We established two models from the identifications made with the correlograms of hyperparametrization and seasonal differences. The autoregressive terms of the model reach three years, indicating that individuals of the species are being caught around the age of three. This may indicate that the curimatãs in the landings at Santarém from 1992 to 2002 were more than two years old, potentially a sign of a lack of fishing pressure on the lower age groups.Keywords: fish landings, curimatã, small-scale fishery, Rio Amazonas. Uma análise em séries temporais das capturas de Prochilodus nigricans pela frota artesanal no trecho inferior do Rio Amazonas ResumoFoi desenvolvida uma análise em séries temporais usando-se dados de desembarque de curimatã, Prochilodus nigricans, em Santarém-PA, uma pequena cidade na margem direita do Rio Amazonas. Uma série histórica de dez anos de capturas diárias foi convertida em médias mensais e analisadas usando-se o software livre GRETL 1.7.8. Definiramse dois modelos a partir da análise dos correlalogramas de hiperparametrização e das diferenças sazonais. Os termos autorregressivos alcançaram três anos, possivelmente indicando que os curimatãs desembarcados em Santarém, entre 1992 e 2002, tinham, em sua maioria, dois anos ou mais, um sinal de ausência de pressão de pesca sobre grupos mais jovens.Palavras-chave: desembarque pesqueiro, curimatã, pesca artesanal, Amazônia.

show abstract

Produção Pesqueira Em Porto Velho, Rondônia (1984-89) - Alguns Aspectos Ecológicos Das Espécies Comercialmente Relevantes.

Cited by 17 publications

References 5 publications

Fish landings in Barcelos, in the Middle Negro River Region, Amazonas

Fish landings in Barcelos, in the Middle Negro River Region, Amazonas

A pesca do Tambaqui, Colossoma macropomum, COM enfoque na área do médio Solimões, Amazonas, Brasil

A time series analysis of Prochilodus nigricans landings caught by small-scale fisheries in the lower stretch of the Amazon River

Contact Info

Product

Resources

About