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Registros recuperados: 11
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A new species of Lelegeis (Coleoptera: Tenebrionidae: Diaperini) from the Atlantic Forest of Brazil Rev. Bras. Zool.
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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Alimentação de quatro espécies de Leporinus (Characiformes, Anostomidae) durante a formação de um reservatório no sudeste do Brasil Iheringia, Sér. Zool.
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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Color pattern variation in Trichomycterus iheringi (Eigenmann, 1917) (Siluriformes: Trichomycteridae) from rio Itatinga and rio Claro, São Paulo, Brazil Neotropical Ichthyology
Silva,Cristiane C. F. da; Matta,Sara Lívia S. Fernandes da; Hilsdorf,Alexandre W. S; Langeani,Francisco; Marceniuk,Alexandre P.
Color pattern is recognized as an important characteristic for diagnosing Trichomycterus species and for elucidating their relationships. An analysis based on morphological and molecular data confirms the existence of a single species of Trichomycterus in the rio Itatinga, a costal river drainage on the escarpment of the Serra do Mar and the rio Claro on the upper course of the rio Tietê. The only species found, Trichomycterus iheringi, shows two clearly distinct patterns of body pigmentation and intermediate color patterns related to body size and microhabitat preference.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body pigmentation; Cytocrome c oxidase; Conspecificity; Southeast Brazil.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100007
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Diel feeding pattern and diet of rough scad Trachurus lathami Nichols, 1920 (Carangidae) from the Southwestern Atlantic Neotropical Ichthyology
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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Estrutura de cardumes da sardinha-verdadeira, Sardinella brasiliensis (Steindachner, 1879), no estado do Rio de Janeiro (Brasil) Zoologia
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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New records of Tindariopsis (Pelecypoda, Protobranchia) from Brazil - Campos Basin (off Rio de Janeiro) Biota Neotropica
Benaim,Natalia Pereira; Absalão,Ricardo Silva.
As a part of the Environmental Characterization of the Campos Basin project, we obtained samples from the continental slope benthos. As a consequence, specimens of Tindariopsis aeolata (Dall, 1889) and Tindariopsis agathida (Dall, 1889) were found. These species show prodissoconch surface sculpture patterns that were never seen for species of Tindariopsis. The presence of this kind of sculpture in the type species of the genus, T. agathida, adds diagnostic characters to the genus. T. agathida and T. aeolata are typical from the Caribbean Realm (Guyana and Tobago). This is the first record of T. aeolata in the southernmost area of the Atlantic Ocean, and also the shallowest record (1000 m) for this species. With this finding of specimens from the Bacia de...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Deep-Sea; Bathyspinulidae; Southeast Brazil; Geographical distribution.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300036
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Palynotaxonomy of Vernonanthura H. Rob. (Vernonieae, Asteraceae) species from Southeast Brazil Rev. Bras. Bot.
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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Phytoplankton composition and functional groups in a tropical humic coastal lagoon, Brazil Acta Botanica
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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Reproductive and population dynamics of the Bay whiff Citharichthys spilopterus Günther, 1862 (Pleuronectiformes: Paralichthyidae) in the Mamanguá Inlet, Rio de Janeiro, Brazil Neotropical Ichthyology
Dias,June Ferraz; Fiadi,Carla Bertolucci; Silbiger,Helcy Lylian Nogueira; Soares,Lucy Satiko Hashimoto.
Bay whiffs, Citharichthys spilopterus, were sampled in Mamanguá Inlet between March 1990 and March 1992 for evaluation of its reproductive dynamic. Bay whiffs presented a crescent gradient of abundance from the deepest to the shallowest stations. The mean total length by oceanographic station showed a clear tendency of a relationship between bigger sizes and higher depths. Males predominated along the studied period and on the smallest length groups. Higher values of alometric condition factor, gonadosomatic relationship and spawning stage of maturity indicated a higher degree of development of the gonads on March and November. Histological analysis showed spawning females in March and May 1990 in the stations closer to the mouth of the Inlet, and spawned...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Population structure; Reproduction; Gonadosomatic relationship; Gonadal maturation; Southeast Brazil.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300009
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Spatial distribution and diversity of bird community in an urban area of Southeast Brazil BABT
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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Use of cacti as heat sources by thermoregulating Mabuya agilis (Raddi) and Mabuya macrorhyncha Hoge (Lacertflia, Scincidae) in two restinga habitats in southeastern Brazil Zoologia
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
Registros recuperados: 11
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