Adaptação do índice de integridade biótica usando a comunidade de peixes para o rio Paraíba do Sul

Araújo, Francisco Gerson

doi:10.1590/s0034-71081998000400002

Cited by 70 publications

(76 citation statements)

References 7 publications

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“…In the present study, the relative condition factor of P. reticulata was highest in Belvedere stream, where the most severe conditions of eutrophication were observed, confirming that this species is not affected by poor environmental quality. In general, the species of the order Cyprinodontiformes are more tolerant of environmental degradation and can remain in such sites long after all the other fish disappear (Araú jo, 1998;Chapman & Chapman, 1992). According to the authors cited here, the flexibility in the diet and the ability to survive and reproduce in waters with low oxygen facilitate the exploration of the habitat by this fish.…”

Section: Discussionmentioning

confidence: 91%

Influence of environmental quality of the tributaries of the Monjolinho River on the relative condition factor (Kn) of the local ichthyofauna

2015

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The relative condition factors (Kn) of the fishes Astyanax paranae, Phalloceros harpagos and Poecilia reticulata were used as a means of assessing the influence of environmental conditions on the well-being of sub - populations of these species, with the eventual aim of using them as bioindicators of disturbance in tributary streams of the Monjolinho River, in São Carlos - SP. The power-law curve generated by the length-weight relationship indicated a positive allometric growth for the three species studied. Overall, the canonical correspondence analysis (CCA) positively correlated average Kn of A. paranae with well oxygenated and oligotrophic environments, typical of conserved areas or near the natural state. For the average value of Kn obtained for Phalloceros harpagosspecies, there was no significant difference between natural and disturbed areas. However, the CCA positively correlated the mean Kn of the speciesP. reticulata from similar environments with higher trophic level, suggesting that this species is indicative of disturbance.

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Section: Discussionmentioning

confidence: 91%

Influence of environmental quality of the tributaries of the Monjolinho River on the relative condition factor (Kn) of the local ichthyofauna

2015

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“…Despite its enormous importance as the principal river basin situated between the country's two greatest urban and industrial centers, São Paulo and Rio de Janeiro, the Paraíba do Sul river has received little attention from the standpoint of ecosystem studies and little has been reported about this environment. This basin covers approximately 57,000 square kilometers on the bottom of the valley between the Mar and Mantiqueira mountain ranges (Araújo, 1998). In each geographical area, some species are the first to disappear as anthropic pressures increase, and among fish, this is particularly true of the genus Brycon (Araújo, 1998).…”

Section: Methodsmentioning

confidence: 99%

The role of riverine forests for food supply for the omnivorous fish Brycon opalinus Cuvier, 1819 (Characidae) in the Serra do Mar, Southeast Brazil

2008

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The purpose of this study was to characterize the diet of the fish Brycon opalinus (Characidae) seasonally and locally, allowing for the determination of its food items and trophic relations with the aquatic and terrestrial environments. The study area encompasses three rivers (Paraibuna, Ipiranga and Grande) in the basin of the Paraibuna, southeast Brazil. Twelve monthly collections were made from January to December 2004. The degree of stomachic repletion and of accumulated visceral fat was analyzed, as was the intestinal length in each class of total length. The frequency of occurrence and the degree of food preference (DFP) of the food items of Brycon opalinus were determined by separating the vegetal and animal items, autochthonous and allochthonous, by insect order and vegetal family consumed. The frequency of occurrence of items of animal origin was found to be equivalent to that of vegetal origin, thus characterizing the omnivorism of Brycon opalinus feeding.Keywords: Atlantic rainforest, Brycon opalinus, frugivores, omnivorism, seed dispersal. O papel das florestas ribeirinhas na alimentação do peixe onívoro Brycon opalinus (Characidae) na Serra do Mar, sudeste do Brasil ResumoO objetivo foi caracterizar a dieta do peixe Brycon opalinus (Characidae) sazonalmente e localmente, sendo possível determinar os itens alimentares e as relações tróficas com os ambientes aquáticos e terrestres. A área de estudo abrange três rios (Paraibuna, Ipiranga e Grande) da bacia do Paraibuna, Sudeste do Brasil. Foram realizadas doze coletas mensais de janeiro a dezembro de 2004. O grau de repleção estomacal e o grau de acúmulo de gordura visceral foram analisados, assim como o comprimento intestinal em cada classe de comprimento total. A freqüência de ocorrência e o grau de preferência alimentar (GPA) dos itens alimentares de Brycon opalinus foram obtidos separando-se os itens vegetais e animais, autóctones e alóctones, por ordem de insetos e por família de vegetais consumidos. A freqüência de ocorrência dos itens de origem animal equivale à dos de origem vegetal, caracterizando assim a onivoria na alimentação de Brycon opalinus.Palavras-chave: Mata Atlântica, Brycon opalinus, frugívoros, onivoria, dispersão de sementes.

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“…It has also been modified for use outside North America (Hughes and Oberdorff, 1999) (Hugueny et al, 1996 in Guinea, Hocutt et al, 1994 on the Namibia-Angola border, Hay et al, 1996 in Namibia, Kamdem-Toham and Teugels, 1999 in Gabon), Asia (Ganasan and Hughes, 1998 in India), Australia (Harris, 1995), Central America (Lyons et al, 1995 in Mexico) and South America (Gutierrez, 1994 in Venezuela;Araújo, 1998 in Brazil;Tejerina-Garro, 2001 in French Guiana). In South America, the index adaptations made by Gutierrez (1994) and Araújo (1998) have conserved the same metrics as used in temperate regions. However, a new approach was used in French Guiana (South America), which selected the metrics to be used based on an empirical study of the interaction fish faunahabitat using taxonomical and functional descriptors (Tejerina-Garro, 2001).…”

Section: The Index Of Biotic Integrity (Ibi)mentioning

confidence: 99%

Effects of natural and anthropogenic environmental changes on riverine fish assemblages: a framework for ecological assessment of rivers

Tejerina‐Garro

Maldonado

Ibáñez

et al. 2005

Braz. arch. biol. technol.

111

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Adaptação do índice de integridade biótica usando a comunidade de peixes para o rio Paraíba do Sul

Abstract: Adaptation of the index of biotic integrity based on fish assemblages in the Paraíba do Sul river, RJ, Brazil

Cited by 70 publications

References 7 publications

Influence of environmental quality of the tributaries of the Monjolinho River on the relative condition factor (Kn) of the local ichthyofauna

Influence of environmental quality of the tributaries of the Monjolinho River on the relative condition factor (Kn) of the local ichthyofauna

The role of riverine forests for food supply for the omnivorous fish Brycon opalinus Cuvier, 1819 (Characidae) in the Serra do Mar, Southeast Brazil

Effects of natural and anthropogenic environmental changes on riverine fish assemblages: a framework for ecological assessment of rivers

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