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Ontogenetic, spatial and temporal variations in the feeding ecology of Deuterodon langei Travassos, 1957 (Teleostei: Characidae) in a Neotropical stream from the Atlantic rainforest, southern Brazil Neotropical Ichthyology
Vitule,Jean R. S.; Braga,Marcelo R.; Aranha,José M. R..
Information related to the diet of one species always contributes to the knowledge of its bionomy and the functioning of the ecosystem in which the species lives. Therefore, understanding the feeding ecology of one fish population and its ontogenetic, spatial and temporal aspects help to understand the structure of fish assemblages and river communities. Knowledge of this structure is essential for habitat management and biodiversity conservation. The feeding ecology of Deuterodon langei Travassos, 1957 was studied through analyses of diet composition, sharing of resources, feeding strategy and contribution of food items to the width of its niche. The analysis included an assessment of ontogenetic, spatial and seasonal variations. The species was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet; Characins; Ontogeny; Niche; Atlantic Forest.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200008
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Small size today, aquarium dumping tomorrow: sales of juvenile non-native large fish as an important threat in Brazil Neotropical Ichthyology
Magalhães,André L. B.; Orsi,Mário Luis; Pelicice,Fernando M.; Azevedo-Santos,Valter M.; Vitule,Jean R. S.; P. Lima-Junior,Dilermando; Brito,Marcelo F. G..
ABSTRACT Informal sales of large-bodied non-native aquarium fishes (known as “tankbusters”) is increasing among Brazilian hobbyists. In this study, we surveyed this non-regulated trade on Facebook® from May 2012 to September 2016, systematically collecting information about the fishes available for trading: species, family, common/scientific names, native range, juvenile length, behavior, number of specimens available in five geographical regions from Brazil. We also assessed the invasion risk of the most frequently sold species using the Fish Invasiveness Screening Test (FIST). We found 93 taxa belonging to 35 families. Cichlidae was the dominant family, and most species were native to South America. All species are sold at very small sizes (< 10.0...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquarium releases; Aquarium trade; Biological invasions; Invasiveness; Propagule pressure.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400207
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Comparison of the diet of Alouatta caraya (Primates: Atelidae) between a riparian island and mainland on the Upper Parana River, southern Brazil Zoologia
Ludwig,Gabriela; Aguiar,Lucas M.; Svoboda,Walfrido K.; Hilst,Carmen L. S.; Navarro,Italmar T.; Vitule,Jean R. S.; Passos,Fernando C..
Howler monkeys (Alouatta Lacèpéde, 1799) are folivores-frugivores with flexible diets depending on conditions. Here, we compare the diets of Alouatta caraya (Humboldt, 1812) in two riparian forests (island and mainland), in Porto Rico region, Upper Paraná River, Southern Brazil. Howlers were followed from October 2004 to September 2005 in the riparian forest of a 1,050 ha island and in the continuous riparian forest on the mainland (left bank of the river). The "scan sampling" method with instantaneous samples every 15 minutes was used. Besides vines, diet breadth was similar: 17 species consumed on the island versus 16 species on the mainland. Both consumed leaves followed by fruits more than any other food type (leaves: island - 65%, mainland - 49%,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Black-and-gold howler; Feeding habits; Gallery forest; Neotropical Primates.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300006
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