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| Registros recuperados: 1.132 | |
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| Linck,Paloma; Tirelli,Flávia P.; Bastos,Maria Carmen; Fonseca,Anderson N.; Cardoso,Liliana F.; Trigo,Tatiane C.. |
| ABSTRACT Daily activity patterns are important elements of species behavior that reflect how they interact with their environment and with other related species. To investigate these patterns is crucial to understand how environmental or community changes may affect this behavior in each particular species. Within the Felidae family, research becomes fundamental to assess how small wild cats respond to local conditions and pressures, once there is a large gap in studies addressing such issues. Leopardus guttulus (Hensel, 1872) is an endangered species classified as Vulnerable (VU) at a regional and global level, being threatened mainly by the loss and fragmentation of its habitats. The aim of this study is to document the daily activity patterns of L.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Camera trap; Circadian activity; Neotropical felids; Southern tiger cat; Protected area. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100206 |
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| Campos,Leila F. A. S.; Teixeira,Bruno P.; Efe,Márcio A.. |
| ABSTRACT The Atlantic Forest has been highly fragmented, with the Pernambuco Center of Endemism (PCE) one of the priority areas for conservation. The Mata do Cedro forest, located in Alagoas state, northeastern Brazil, is a forest fragment within the PCE surrounded by a matrix of sugarcane that acts as a refuge for several threatened bird species, some of which are endemic to the region. Here, we characterize the bird community in Mata do Cedro using measures of species abundance, frequency of occurrence, habitat use and sensitivity to human disturbance. The functional role of species was investigated with a functional dendrogram. We registered 111 species, most resident and forest dependent. The most representative trophic categories were insectivores... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Fragmentation; Functional groups; Community structure; Alagoas. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100221 |
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| Arruda,Janine O.; Barker,Gary M.; Thomé,José W.. |
| ABSTRACT Omalonyx geayi Tillier, 1980 was originally described on the basis of specimens from Kaw swamp, French Guiana. This species distinguished from other of Omalonyx d'Orbigny, 1837: (i) by hermaphrodite duct twice as long and sacculate, without radial ducts but a funnel-shaped insertion on the ovariotestis, and (ii) by longitudinal wrinkled folds on the phallus inner wall. Two recent collections - from Trinidad and Carauari (Amazonas, Brazil) included specimens with ovariotestis and hermaphrodite duct morphologies similar to that originally described for O. geayi, but with phallus morphology not consistent with identification as O. geayi. A further eight lots, from Suriname, Ecuador, Brazil (Amazonas and Alagoas States), Bolivia and Cayenne-Kourou... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parasitic castration; Histology; Neotropical; Ovariotestis; Hermaphrodite duct. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100219 |
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| Martins,Ubirajara R.; Galileo,Maria Helena M.. |
| Colombian records are given for Hexoplon albipenne Bates, 1872; H. venus Thomson, 1864; Gnomidolon rubricolor Bates, 1870; Tropidion brunneiceps (Thomson, 1865); Thoracibidion buquetii (Thomson, 1867); T. io (Thomson, 1867); Rhysium bivulneratum (Thomson, 1867); R. guttiferum (Thomson, 1867); Compsibidion maronicum (Thomson, 1867); C. varipenne Martins, 1969; ?Compsa flavofasciata (Thomson, 1867); Neocompsa squalida (Thomson, 1867); Heterachthes signaticollis (Thomson, 1865). New species described: Gnomidolon bellus,from Tolima and Neocompsa longipilis,from Santander. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerambycidae; Colombia; Ibidionini; New records; New species. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400002 |
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| Frainer,André; Duarte,Marcelo M.. |
| Soil invertebrate distribution in Araucaria forest, grassland and edge habitats was studied in both disturbed and undisturbed areas in southern Brazil. Mean-density and taxa compositions were verified. Invertebrate densities differed between grassland and the other two habitats in the undisturbed area but not across the disturbed one. At the disturbed area taxa differed between the grassland and the other two habitats. The undisturbed area, on the other hand, presented taxa differences only between the grassland and the forest habitats. Acari, Arachnida and Collembola were the most sensitive taxa for detecting differences across habitats in both areas. At the disturbed area, these taxa presented densities lowering from the forest to the grassland. At the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria forest; Forest edge; Grasslands; Acari; Collembola. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300013 |
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| Balestrin,Rafael L; Cappellari,Lize H. |
| This study presents original data on the reproduction and feeding ecology of two syntopic amphisbaenians, Amphisbaena munoai Klappenbach, 1969 and Anops kingi Bell, 1833, from southern Brazil. Sampling was carried out from April 2004 to April 2006 at a highland area located in São Jerônimo and Barão do Triunfo municipalities, Rio Grande do Sul, Brazil. A total of 647 amphisbaenians were collected, 510 specimens of A. munoai and 137 specimens of A. kingi, of which 130 and 93, respectively, had their gonads and gut content analyzed. Both species presented a unimodal pattern of seasonal distribution, sexually mature females with significantly larger snout vent length (SVL) than sexually mature males, and seasonal reproductive cycle. Adults of A. kingi had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seasonality; Sexual dimorphism; Diet. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000100013 |
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| Lobo-Araújo,Lahert W.; Toledo,Mário T. F.; Efe,Márcio A.; Malhado,Ana C. M.; Vital,Marcos V. C.; Toledo-Lima,Guilherme S.; Macario,Phoeve; Santos,Jhonatan G. dos; Ladle,Richard J.. |
| The Pernambuco Center of Endemism (PCE) in northeastern Brazil is highly fragmented and degraded. Despite its potential conservation importance the bird fauna in this area is still relatively unknown and there are many remnant fragments that have not been systematically surveyed. Here, we report the results of bird surveys in five forest fragments (one pioneer, two ombrophilous and two seasonal). In total, 162 taxa were recorded, 12 of which are endemic to the PCE. The frequency of endangered species was lower than what has been reported in studies from the same area and most of the taxa considered to be at risk of extinction were sub-species of uncertain taxonomic validity. The comparatively low number of endemic/threatened species may be due to the small... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avifauna; Ombrophilous forest; Restinga; Seasonal forest; Species richness. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200002 |
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| Duarte,Marcelo Maisonette. |
| The abundance of soil microarthropods from seven fragments of Araucaria Forest, Muitos Capões, Rio Grande do Sul, Brazil, was compared. The size of the fragments ranged from 0.25 ha to 35 ha, the two largest fragments are situated within the Aracuri Ecological Station and the remaining five are situated in a cattle ranching farm. In June 2000, three plots (10 m x 10 m) were established in the central area of each patch, and three soil cores (7 cm diameter x 6 cm deep) were taken per plot. The abundance of microarthropods in the upper six centimeters (soil + litter) varied between 63209 and 102704 ind.m-2, with oribatid mites (Acari, Cryptostigmata) being dominant in all fragments (between 46.9 % and 61.3 % of total individuals). Most microarthropod groups... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil microarthropods; Araucaria forest; Acari; Collembola; Habitat fragmentation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000200008 |
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| Dutra,Bibiana K.; Silva,Karina M. da; Zank,Caroline; Conter,Maria R.; Oliveira,Guendalina T.. |
| The goal of this study was to evaluate the effect of a high-carbohydrate diet (HC) and a high-protein diet (HP) on the metabolism of the crayfish Parastacus brasiliensis (Von Martens, 1869), collected in different seasons and maintained in the laboratory for 15 days. Crayfish were collected monthly from January 2002 to January 2004 at São Francisco de Paula, Southern Brazil, in Guarapirá stream. In the laboratory, the animals were kept submerged in aquariums under controlled conditions. They were fed ad libitum, for 15 days with either a HC or HP diet. At the end of this period, haemolymph samples were collected, as were hepatopancreas, gills, and abdominal muscle that were removed for determination of glycogen, free glucose, lipids, and triglycerides. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crayfish; Experimental culture; Diet; Metabolism; Seasonality. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400003 |
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| Guedes,Rozileudo da Silva; Zanella,Fernando César Vieira; Grossi,Paschoal Coelho. |
| RESUMO Os besouros apresentam grande diversidade taxonômica e funcional, no entanto, para a Região Nordeste, especialmente para a porção com vegetação de Caatinga, o conhecimento da fauna de Coleoptera é muito restrito. Por se tratar de uma região com grande diversidade de paisagens, torna-se necessário conhecer a coleopterofauna que ocorre nas diferentes fitofisionomias, buscando com isso abranger a variabilidade espacial encontrada nessa região xérica. Diante disso, o objetivo deste estudo foi realizar um levantamento das espécies de besouros no Semiárido paraibano. As coletas foram realizadas semanalmente durante quatro anos (2009-2013) utilizando uma armadilha Malaise por fitofisionomia, sendo amostrada uma área com vegetação xerófila e outra com mata... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Besouros; Riqueza de espécies; Malaise; Semiárido. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100212 |
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| Freitas,Tiago M. S.; Montag,Luciano F. A.; Barthem,Ronaldo B.. |
| ABSTRACT Fish exhibit morphological, physiological and behavioral specializations which enable them to display different ways to explore the environments and resources. Thus, the aim of this study was to verify how four Auchenipteridae species differ in the distribution, feeding habits and morphological traits: Auchenipterichthys longimanus (Günther, 1864), Auchenipterus nuchalis (Spix & Agassiz, 1829), Tatia intermedia (Steindachner, 1877) and Trachelyopterus galeatus (Linnaeus, 1766). This study was conducted in rivers and bays of the Anapú Basin, Pará State (Brazil), where these species are abundant. Specimens were collected using gillnets, and after caught the stomachs were removed for the contents analyzes. Eighteen morphometric measurements from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Morphology; Diet; Adaptation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100208 |
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| Lacerda,Lenira M.; Simões,Zilá L. P.. |
| A caracterização morfométrica de 785 ovos produzidos por rainhas e 193 (161 funcionais e 32 tróficos) produzidos por operárias de Scaptotrigona depilis (Moure, 1942), mostrou que eles são similares, em tamanho e formato, aos de outras espécies de abelhas Meliponina. Numa mesma colônia, ovos de rainha sempre apresentaram menor comprimento que os de operárias (funcionais ou tróficos). Entre ovos produzidos por operárias, ovos funcionais foram, normalmente, mais curtos e estreitos que os tróficos. O estudo dos ovos produzidos por rainhas não mostrou, como esperado, a presença de dois grupos de ovos distinguíveis pelo comprimento, como observado em S. postica (Latreille, 1807). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ovos; Funcional; Trófico; Machos; Scaptotrigona. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000100016 |
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| Frey-da-Silva,Angélica; Grazia,Jocélia. |
| Four new species of Acrosternum from Brazil are described: Acrosternum (Chinavia)immaculatum(Pará, Mato Grosso, Minas Gerais), A.(C.) panizzii (Paraná), A. (C.) pontagrossensis(Paraná)and A. (C.) rideri (Amazonas, Mato Grosso, Goiás, Distrito Federal, Minas Gerais). The external and internal genitalia of both sexes, except of A. (C.) pontagrossensis are studied. A key for the identification of all known species of the genus is included. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heteroptera; Pentatomidae; Acrosternum; Chinavia; Taxonomy. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100011 |
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| Creão-Duarte,Antonio J.; Anjos,Ulisses U.; Santos,Wellington E.. |
| Foram examinados 1.069 indivíduos de 13 espécies de membracídeos coletados em suas plantas hospedeiras, entre agosto de 2004 e setembro de 2005, em uma região do semi-árido da Paraíba, Nordeste do Brasil. Enchenopa concolor (Fairmaire, 1846) (31,6%) e E. euniceae Creão-Duarte & Rothéa, 2006 (24,8%) foram as espécies mais abundantes. Cinco famílias de plantas hospedeiras abrigaram esses insetos. Entre essas famílias, Fabaceae apresentou maior riqueza (12) e abundância (70,3%) de membracídeos. Darnis olivacea Fabricius, 1803, Hygris beckeri Sakakibara, 1998 e Sundarion flavum (Fairmaire, 1846) apresentaram os maiores valores de amplitude de nicho. Entre as espécies mais abundantes, E. minuta Creão-Duarte & Rothéa, 2006 e Micrutalis binaria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Plantas hospedeiras; Sobreposição de nicho. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000400012 |
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| Registros recuperados: 1.132 | |
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