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	Provedor de dados Neotropical Ichthyology (5) Autor Mérona,Bernard de (5) Armbruster,Jonathan W. (1) Betancur-R.,Ricardo (1) Chaves,Paulo de Tarso (1) Correa,Sandra Bibiana (1) Mol,Jan (1) Mol,Jan H. (1) Ouboter,Paul E. (1) Rankin-de-Mérona,Judy (1) Sahdew,Shamita (1) Tejerina-Garro,Francisco Leonardo (1) Vigouroux,Régis (1) Mais... Palavra-chave Amazon region (1) Comté River (1) Dam (1) Diet (1) Exotic fish (1) Fecundity (1) Fish community (1) Fishes (1) Fruit-eating fish (1) Functional descriptors (1) Man-made lake (1) Neotropical (1) Oocyte size (1) Overlap (1) Red Belly Pacu (1) Reproduction (1) River (1) Seasonal variability (1) South America (1) Species introduction (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2014 (1) 2010 (1) 2009 (1) 2007 (1) 2004 (1) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Flow seasonality and fish assemblage in a tropical river, French Guiana, South America Neotropical Ichthyology Tejerina-Garro,Francisco Leonardo; Mérona,Bernard de. The objective of this study is to verify the existence of a seasonal pattern of variation in the fish assemblages of a tropical river using taxonomic and functional descriptors. Fish were sampled using gillnets at two sites on the Comté River, a large-sized river 254.8 km long, flowing entirely through rainforest areas of French Guiana. Samplings were conducted every other month from August 1998 to July 2000. Four types of fish assemblage descriptors were used: the species descriptor (number of individual fish of each species in the sample); the family descriptor (number of individual fish of each family in the sample); the trophic descriptor (distribution of the fish biomass in each feeding guild) and the specific maximum observed size - MOS (number of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Comté River; Amazon region; Functional descriptors. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100017 Diet shift of Red Belly Pacu Piaractus brachypomus (Cuvier, 1818) (Characiformes: Serrasalmidae), a Neotropical fish, in the Sepik-Ramu River Basin, Papua New Guinea Neotropical Ichthyology Correa,Sandra Bibiana; Betancur-R.,Ricardo; Mérona,Bernard de; Armbruster,Jonathan W.. Introduction of fish species is a globally widespread practice that causes losses of native species and homogenization of diversity within and across continents. Diet assessments are important tools to depict the ecological function of species introduced into novel ecosystem and possible direct and indirect ecological effects. In this study, we compare the diet of Piaractus brachypomus, a mainly frugivorous Neotropical fish, introduced into the Sepik-Ramu River Basin (Papua New Guinea) nearly two decades ago, to that of similar size individuals from Neotropical populations in the Amazon and Orinoco River basins (South America). In contrast to native populations that feed mainly on terrestrial plants and invertebrates, the diet of introduced P. brachypomus... Tipo: Info:eu-repo/semantics/article Palavras-chave: Exotic fish; Fruit-eating fish; Species introduction; Red Belly Pacu; Stocking. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400827 The fish fauna of Brokopondo Reservoir, Suriname, during 40 years of impoundment Neotropical Ichthyology Mol,Jan H.; Mérona,Bernard de; Ouboter,Paul E.; Sahdew,Shamita. We investigated long-term changes in the fish fauna of Brokopondo Reservoir, Suriname, the first large reservoir (1560 km²) that was created in tropical rainforest. Before closure of the dam in 1964, the fish fauna of Suriname River had 172 species, high diversity and high evenness. The riverine fauna was dominated by small-sized species, but no single species was dominant in numbers. Large catfishes were dominant in biomass. Species were evenly distributed over riverine habitats: rapids, tributaries and main channel. Four years after closure of the dam, only 62 fish species were collected from Brokopondo Reservoir, but the composition of the fish fauna was still changing. The reservoir fauna in 1978 was very similar to the reservoir fauna in 2005,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dam; Man-made lake; Neotropical; River; Fish community. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300015 Phenotypic plasticity in fish life-history traits in two neotropical reservoirs: Petit-Saut Reservoir in French Guiana and Brokopondo Reservoir in Suriname Neotropical Ichthyology Mérona,Bernard de; Mol,Jan; Vigouroux,Régis; Chaves,Paulo de Tarso. Fish species are known for their large phenotypic plasticity in life-history traits in relation to environmental characteristics. Plasticity allows species to increase their fitness in a given environment. Here we examined the life-history response of fish species after an abrupt change in their environment caused by the damming of rivers. Two reservoirs of different age, both situated on the Guiana Shield, were investigated: the young Petit-Saut Reservoir in French Guiana (14 years) and the much older Brokopondo Reservoir in Suriname (44 years). Six life-history traits in 14 fish species were studied and compared to their value in the Sinnamary River prior to the completion of Petit-Saut Reservoir. The traits analyzed were maximum length, absolute and... Tipo: Info:eu-repo/semantics/article Palavras-chave: South America; Reproduction; Strategy; Tactic; Fecundity; Oocyte size. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400018 Food resource partitioning in a fish community of the central Amazon floodplain Neotropical Ichthyology Mérona,Bernard de; Rankin-de-Mérona,Judy. Diets of most of fish species inhabiting a floodplain lake in central Amazonia were studied over a two years and half period. Based on the percentage of relative occurrence of 11 major food categories a classification of species in 11 feeding guilds is proposed. Many species were found to be specialized feeders. Fish, detritus and insects were the most important food resources supporting the fish community in both seasons, but the proportions of fruits, invertebrates and fish were reduced during the low water season. At the community level mean diet overlap between species was low, suggesting efficient resource partitioning within the community. However mean overlap between unspecialized feeders was high. Based on the 23 most abundant species belonging to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Varzea lake; Fishes; Diet; Overlap; Seasonal variability. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000200004 Registros recuperados: 5 Primeira ... 1 ... Última

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