The Commercial fisheries of the Madeira river basin in the Rondonia state, brazilian Amazon

This study presents qualitative and quantitative information about commercial fishery in the basin of the Madeira River, tributary of the Amazon River, describing the fishing activity in the segment between Guajara-Mirim and Porto Velho, in Rondonia State. From January to December/2004, 219 fisherme...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Acta amazonica 2012-03, Vol.42 (1), p.29-40
Hauptverfasser: da Costa Doria, CR, Ruffino, M L, Hijazi, N C, da Cruz, RL
Format: Artikel
Sprache:por
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This study presents qualitative and quantitative information about commercial fishery in the basin of the Madeira River, tributary of the Amazon River, describing the fishing activity in the segment between Guajara-Mirim and Porto Velho, in Rondonia State. From January to December/2004, 219 fishermen and 935 trips were registered, corresponding to the capture of 460 t of fish. Data from fish landings demonstrate that fisheries in the region are small-scaled and point to a higher participation of small motorized canoes (130 units) than of fishing boats (45 units; average capacity: 3000 kg) in the fishing fleet. Migratory species like jaraqui (Semaprochilodus spp.), dourada (Brachyplatystoma rousseauxii), sardinha (Triportheus spp.), jatuarana/ matrinxa (Brycon amazonicus e B. cephalus), curimata (Prochilodus nigricans) and filhote (Brachyplatystoma filamentosum) were the most important in terms of landings. The technical information produced are very important in order to subsidize fishery management, as well as to assess future variations that might happen due to the hydro-electric enterprises under construction in the region.Original Abstract: Este estudo caracteriza quali e quantitativamente a atividade pesqueira comercial na bacia do rio Madeira, afluente do rio Amazonas, no trecho entre Guajara-Mirim e Porto Velho, estado de Rondonia. No periodo de Janeiro a dezembro/2004, foram registrados 460 t, correspondendo 935 viagens. A analise dos dados oriundos do monitoramento dos desembarques demonstrou que a pesca na regiao tern carater artesanal de pequena escala, destacando a maior participacao das canoas motorizadas (131 unidades) do que barcos pesqueiros (45 unidades; capacidade media: 3.000kg) na frota pesqueira. Os peixes migradores jaraqui (Semaprochilodus spp.), dourada (Brachyplatystoma rousseauxii), sardinha (Triportheus spp.), jatuarana/ matrinxa (Brycon amazonicus e B. cephalus), curimata (Prochilodus nigricans) e filhote (Brachyplatystoma filamentosum) se destacaram na composicao das especies desembarcadas. As informacoes tecnicas geradas sao importantes para subsidiar acoes de ordenamento pesqueiro, bem como para avaliar futuras variacoes que possam ocorrer na atividade frente aos impactos dos empreendimentos hidreletricos em construcao na regiao.
ISSN:0044-5967