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| Registros recuperados: 12 | |
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| Aloquio,Sergio; Lopes-Andrade,Cristiano. |
| ABSTRACT Lelegeis Champion, 1886 occurs only in the Neotropical region and comprises four species: L. aeneipennis Champion, 1886 from Mexico; L. apicalis Laporte & Brullé, 1831 from Cuba; L. hispaniolae Triplehorn, 1962 from Haiti and the Dominican Republic; and L. nigrifrons (Chevrolat, 1878) occurring in Brazil, Mexico, Panama, Peru and Venezuela. Here, Lelegeis pytanga sp. nov. is described based on specimens collected in the Atlantic Forest of Brazil, and the first detailed description of the sclerites of the male and female terminalia of Lelegeis is produced. The new species can be easily distinguished from the other Lelegeis by its dull reddish brown to reddish orange elytral coloration, while the remaining body surface is dull black. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Darkling beetle; Diaperinae; Host fungi; Southeast Brazil. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100322 |
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| Durães,Renata; Pompeu,Paulo dos Santos; Godinho,Alexandre Lima. |
| The study reports the changes ocurred in feeding ecology of fish species during a tropical river reservoir formation. It was analysed the stomachal contents of 399 individuals belonging to four species of genus Leporinus (L. elongatus Valenciennes, 1849, n=157; L.friderici (Bloch, 1794), n=87; L. octofasciatus Steindachner, 1917, n=107; L.amblyrhynchus Garavello & Britski, 1987, n=48) during formation of Nova Ponte reservoir, State of Minas Gerais, Brazil, in 1993 and 1994. Specimens were separated by sampling period, according with the rate of filling of the reservoir, and standard lenght classes. The species had included in diet vegetal and animal items of autochtone and alochtone origin in several proportions. L. amblyrhynchus fed on basically... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leporinus; Diet; Trophic overlap; Reservoir; Southeast Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100019 |
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| Carvalho,Maria Raquel de; Soares,Lucy Satiko Hashimoto. |
| Diel changes in feeding activity and dietary composition of the rough scad Trachurus lathami were investigated through the analysis of stomach contents of 307 fish sampled over a 24-h period on the continental shelf off Ubatuba (23º 35'S 45ºW). Stomach contents were analyzed by frequency of occurrence (O%), percent number (N%), percent mass (M%), and feeding index (FI% = O% * M%). Rough scad fed on mollusks (Gastropoda, Crepidula sp.), crustacean (Ostracoda, Copepoda, decapod larvae), chaetognat and teleostean fish. The main items were calanoid copepods (Eucalanus sp. and Centropages sp.). According to the analysis of the stomach fullness and prey digestion, T. lathami is both a diurnal and nocturnal feeder, showing some seasonal variation in feeding time.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food Habits; Feeding Ecology; Stomach Contents; Rhythms; Southeast Brazil. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000400005 |
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| Paiva,Melquíades Pinto; Falcão,Ana Paula da Costa. |
| This paper deals with the schooling structure of Brazilian-sardine, Sardinella brasiliensis (Steindachner, 1879), in coastal waters of Rio de Janeiro State (Brazil). Samples were obtained from schools caught by commercial fishery in the area of Angra dos Reis (23º-24ºS, 44º-45ºW), from autumn/1999 to summer/2000, comprising 2,278 fishes. In average, males had total lengths and weights lower than those of females, with major differences in weights. Seasonal fluctuations of average total weights are associated with the annual reproduction cycle and condition factor, mainly in females. Sex-ratio was around 1:1, except in winter, when females were in majority. Mature males and females were found all along the year, with a peak in the spring-summer, showing a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian-sardine; Sardinella brasiliensis; Schooling structure; Rio de Janeiro; Southeast Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600009 |
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| Mendonça,Claudia B. F.; Gonçalves-Esteves,Vania; Esteves,Roberto L.; Nunes,Alessandra D.. |
| The present work studied the pollinic characteristics of 22 species of Vernonanthura from Southeast Brazil. The pollen grains were acetolysed, measured, described and ilustrated under light, scanning and transmission electron microscopy. Based on the results, Vernonanthura was considered an euripolinic genus as pollen grains presented distinctive characteristics, mainly related to the ornamentation, the size and apertures of the pollen grains, which may serve as a further tool in the delimitation of the species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Palinology; Southeast Brazil; Vernonanthura; Vernoniinae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000400004 |
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| Alves-de-Souza,Catharina; Menezes,Mariângela; Huszar,Vera. |
| This paper presents the composition and functional groups of the phytoplankton from Comprida lagoon, a tropical humic coastal Lagoon located in Southeast Brazil. A total of 28 taxa was found, distributed in eight taxonomic divisions as follows: 26% Heterokontophyta, 21% Chlorophyta, 21% Cyanophyta, 14% Bacillariophyta, 14% Cryptophyta, and 4% Prymnesiophyta. Twenty-three taxa were identified at the specific and infraspecific levels, from which four are new records for Brazil and two for Rio de Janeiro State. Phytoplankton of the Comprida lagoon was comprised of several flagellates, but also eukaryote and prokaryote picoplankton, filamentous cyanobacteria and several diatoms. The biomass was lower than that found in other lacustrine systems, and showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoplankton; Tropics; Humic systems; Coastal lagoons; Functional groups; Southeast Brazil. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062006000300019 |
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| Manhães,Marco Antônio; Loures-Ribeiro,Alan. |
| Since the campus of the Federal University of Juiz de Fora, Minas Gerais State, Brazil, has different landscapes, it turns up to be a useful ecological model to evaluate the influence of habitat heterogeneity on bird communities. Our research goals were to know the local avifauna and compare its composition and bird diversity within the different landscapes. Species were identified in point counts without distance estimation, in four habitats: secondary woodlot, lake and surroundings, scrub/abandoned grazing areas and urban areas. One hundred and twenty-one species were identified, but no difference in diversity among the habitats was found. However, analyses indicated the existence of greater similarities among the sampling points belonging to the same... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird diversity; Southeast Brazil; Habitat heterogeneity; Urban landscapes. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200016 |
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| Guedes,Gustavo H.S.; Salgado,Fernando L.K.; Uehara,Wagner; Ferreira,Débora L. de Paiva; Araújo,Francisco G.. |
| ABSTRACT Leptopanchax opalescens (Myers, 1942) is a small seasonal killifish endemic to coastal drainages in the state of Rio de Janeiro, Brazil. Leptopanchax opalescens was recaptured in temporary open vegetation pools (22°42.35’S, 43°41.59’W) in the hydrographic basin of the Guandu River, state of Rio de Janeiro, Brazil, after eight years without records. Information on habitat and population parameters (Capture per unit area (CPUA), size, sex ratio and length-weight relationship (LWR)) are given to provide subsidies for the conservation of this species. Specimens were captured during the rainy season (January-April 2020) in shallow pools (mean depth = 21 ± 12 s.d. cm), with relatively acidic pH (5.2 ± 0.8) and low concentrations of dissolved oxygen (3.5... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annual fish; Atlantic forest; Conservation; Rio de Janeiro; Southeast Brazil; Threatened fauna. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100329 |
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| Vrcibradic,Davor; Rocha,Carlos Frederico Duarte. |
| Lizards may benefit from gain of heat from contact with the substrate via conduction. In this study, evidence that the lizards Mabuya agilis (Raddi, 1823) and Mabuya macrorhynclui Hoge, 1946 (Scincidae) inhabiting two restinga habitats in southeastern Brazil (Grussaf, Rio de Janeiro and Praia das Neves, Espfrito Santo), may shift microhabitat preferences along the day, and that such shifts may be related to the use of cacti surfaces as direct sources of heat is presented. For both species, body temperature (Tb) was always significantly correlated (p < 0,05) with air temperature (Ta). Tb was significantly correlated (p < 0,0.5) with substrate temperature (Ts) for M. agilis collected on cacti, but not for specimens collected on the ground. For M.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mabuya; Lizard; Thermoregulation; Cacti; Heat gain by conduction; Restinga habitat; Southeast Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100005 |
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| Registros recuperados: 12 | |
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