A situação da pesca na Amazônia Central

Saint-Paul, Ulrich; Bayley, Peter B.

doi:10.1590/1809-43921979094s109

Cited by 18 publications

(16 citation statements)

References 5 publications

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“…It should be noted, however, that these gillnets do exclude juveniles and small‐bodied fishes. Small fishes have in earlier studies been noted as especially abundant among the roots of floating meadows (Saint‐Paul & Bayley, 1979; Junk, 1984; Sanchéz‐Botero & Araujo‐Lima, 2001; Carvalho de Lima & Araujo‐Lima, 2004). These studies, however, have focused on seine samples that are particularly effective at sampling small fishes.…”

Section: Discussionmentioning

confidence: 99%

A comparison of flooded forest and floating meadow fish assemblages in an upper Amazon floodplain

Correa¹,

Crampton²,

Chapman³

et al. 2008

Journal of Fish Biology

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Matched sets of gillnets of different mesh-sizes were used to evaluate the degree to which contiguous and connected flooded forest and floating meadow habitats are characterized by distinct fish faunas during the flooding season in the Peruvian Amazon. For fishes between 38-740 mm standard length (L S ) (the size range captured by the gear), an overriding pattern of faunal similarity emerged between these two habitats. The mean species richness, diversity, abundance, fish mass, mean and maximum L S , and maximum mass did not differ significantly between flooded forest and floating meadows. Species abundances followed a log-normal distribution in which three species accounted for 60-70% of the total abundance in each habitat. Despite these similarities, multivariate analyses demonstrated subtle differences in species composition between flooded forest and adjacent floating macrophytes. In addition, the absolute number of species was higher in flooded forest, reflecting a higher percentage of rare species. The day-night species turnover was found to be greater in flooded forests than floating meadows. Further, nocturnal samples had higher abundances and greater species richness than diurnal samples in both habitats. Differences in habitat structural complexity between flooded forest and floating meadows may result in a higher abundance and species richness of day-active species in floating meadows.

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Section: Discussionmentioning

confidence: 99%

A comparison of flooded forest and floating meadow fish assemblages in an upper Amazon floodplain

Correa¹,

Crampton²,

Chapman³

et al. 2008

Journal of Fish Biology

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show abstract

“…Blanco-Belmont, 1990; Junk e Robertson, 1997), que constituem importantes itens alimentares para juvenis de Characiformes migradores (Saint-Paul e Bayley, 1979;Goulding e Carvalho, 1982), incluindo muitas espécies explotadas pela frota pesqueira da Amazônia (Sánchez-Botero e Araújo-Lima, 2001).…”

Section: Discussionunclassified

<b>Assembléias de peixes associadas às macrófitas aquáticas em lagos de várzea do baixo rio Solimões</b><br>doi: 10.5007/2175-7925.2010v23n1p131

2011

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ResumoO objetivo deste trabalho foi determinar a diversidade e a composição das assembléias de peixes associadas a diferentes tipos de bancos de macrófitas aquáticas, em lagos de várzea do rio Solimões. As amostragens foram realizadas, em duas fases do ciclo hidrológico, cheia e seca, em bancos de macrófitas compostos pelo capim flutuante Paspalum repens e em bancos mistos (compostos por associações de espécies flutuantes livres). Foram coletados 1.340 indivíduos pertencentes a 50 espécies de peixes, nos dois períodos e nos dois tipos de bancos estudados. Characiformes foi o grupo dominante em ambos os períodos e tipos de bancos. A riqueza e a diversidade de espécies foram maiores nos bancos compostos pelo capim flutuante P. repens do que nos bancos mistos. Estes resultados corroboram a hipótese de que a diversidade de espécies de peixes destes hábitats está associada à complexidade estrutural formada pelos caules e raízes, mais acentuada nos bancos de P. repens. Unitermos: Amazônia, assembléia de peixes, bancos de macrófitas, ciclo hidrológico AbstractFish assemblages associated with aquatic macrophytes in floodplain lakes in the Lower Solimões River. We studied the diversity and species composition of fish assemblages associated with different stands of aquatic macrophytes. The samplings were made during two seasons of the hydrological cycle, the dry and flooding seasons, in two types of macrophyte stands. The first type was monospecific and was composed by floating grass Paspalum repens. The second type was composed by several free-floating species, and was classified as mixed stand. We collected 1,340 fish belonging to 50 species. Characiformes was the dominant group in the two stand types and hydrological seasons. In the stands of P. repens, the species richness and diversity were higher than in the mixed stands, probably due to the greater structural complexity of P. repens.

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“…Desde hace décadas esta especie ha venido soportando una explotación pesquera intensa debido a la demanda de su carne y por la exportación de alevinos como pez ornamental (Saint-Paul & Bayley, 1979;García et al, 2011). Por lo tanto, es considerada como especie amenazada en el Apéndice II de la lista CITES, por lo que su comercio internacional se regula mediante procedimientos de extracción del medio natural no perjudicial (Castello & Stewart, 2010).…”

Section: Introductionunclassified

VALORES HEMATOLÓGICOS Y BIOQUÍMICOS DE JUVENILES DE PAICHE Arapaima gigas EN CULTIVO INTENSIVO

et al. 2017

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RESUMENEl objetivo de este estudio fue determinar los valores hematológicos y bioquímicos de juveniles de paiche Arapaima gigas criados en cultivo intensivo. Los juveniles (peso inicial 71,72 ± 23,89 g y longitud inicial 20,45 ± 1,42 cm) fueron estabulados en cuatro tanques de 900 L con recirculación de agua (temperatura 25,90 peces m y posteriormente a 150 peces m . La alimentación se realizó tres veces al día con un alimento ® balanceado (Aquatech , Naltech, Lima, Perú; composición proximal: 42% proteína, 10% lípidos, 12% cenizas; tamaño de partícula: 2,5 y 4 mm). Las muestras de sangre se obtuvieron en cinco muestreos (124, 137, 138, 142 y 143 días) con jeringas descartables conteniendo EDTA al 10% para la determinación de los valores hematológicos y bioquímicos. Al final del experimento, los peces alcanzaron un peso promedio de 832,6 ± 173,1 g y 47,4 ± 2,4 cm de longitud total con una supervivencia de 91,9%. Los valores hematológicos colesterol 104,63 ± 43,89 mg dL . Los valores hematológicos y bioquímicos se encontraron dentro de los rangos reportados para esta especie, mostrando condiciones fisiológicas normales al estar sometidos a condiciones intensivas de cultivo. PALABRAS CLAVE: Amazonia, acuicultura, piscicultura, paiche. HEMATOLOGICAL AND BIOCHEMICAL VALUES FOR Arapaima gigas JUVENILES UNDER INTENSIVE REARING CONDITIONS ABSTRACTThe aim of this study was to determine hematological and biochemical values of juveniles of Arapaima gigas reared in intensive culture. Juveniles (initial wet weight and length: 71,72 ± 23,89 g and 20,45 ± 1,42 cm) were reared in four 900 L tanks with water recirculation (temperature 25,9 ± 0.44 ° C, dissolved oxygen

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A situação da pesca na Amazônia Central

Cited by 18 publications

References 5 publications

A comparison of flooded forest and floating meadow fish assemblages in an upper Amazon floodplain

A comparison of flooded forest and floating meadow fish assemblages in an upper Amazon floodplain

<b>Assembléias de peixes associadas às macrófitas aquáticas em lagos de várzea do baixo rio Solimões</b><br>doi: 10.5007/2175-7925.2010v23n1p131

VALORES HEMATOLÓGICOS Y BIOQUÍMICOS DE JUVENILES DE PAICHE Arapaima gigas EN CULTIVO INTENSIVO

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