Consulta: subjectFacets:"Activity patterns"
Registros recuperados: 9
Data/hora: 13/06/2024 08:21:10

Daily activity and microhabitat use of sympatric lizards from Serra do Cipó, southeastern Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Filogonio,Renato; Del Lama,Fernanda S.; Machado,Leonardo L.; Drumond,Michelle; Zanon,Isabella; Mezzetti,Nathália A.; Galdino,Conrado A. B.
We studied the influence of seasonality on the daily activity pattern and microhabitat use of three sympatric lizard species, Cnemidophorus ocellifer Spix, 1825 (Teiidae), Tropidurus montanus Rodrigues, 1987 and Eurolophosaurus nanuzae (Rodrigues, 1981) (Tropiduridae), in an area of campos rupestres (rocky fields) habitat in state of Minas Gerais, Brazil. Cnemidophorus ocellifer exhibited low density and activity concentrated within the hottest hours of the day, and was observed mainly on shaded rocks. Tropidurus montanus and E. nanuzae had similar activity patterns that did not vary between seasons. Activity of T. montanus was related to environmental temperatures. However, we did not find such relationships for E. nanuzae during the dry season. Both T....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity patterns; Seasonal variation; Cnemidophorus ocellifer; Tropidurus montanus; Eurolophosaurus nanuzae.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400008

The agouti Dasyprocta leporina (Rodentia: Dasyproctidae) as seed disperser of the palm Astrocaryum aculeatissimum
Provedor de dados: Mastozoología Neotropical
Autores: Pires,Alexandra S; Galetti,Mauro.
Some large-seeded plants depend heavily on agoutis for seedling recruitment. The importance of Dasyprocta leporina as seed disperser of the Atlantic Forest palm Astrocaryum aculeatissimum was evaluated using camera-traps and seed removal experiments. Agoutis were registered at 67% of the records obtained through the monitoring of mature fruits; palms were visited from 07:00 to 18:45 h. Dispersal distances ranged from 0.5 to 48.7 m (mean ± sd = 6.8 ± 9.1 m) and most of the removed seeds were buried (57.8%). These results corroborate the importance of agoutis for the seed dispersal of Astrocaryum palms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity patterns; Atlantic Forest; Rodents; Seed dispersal; Seed predation.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000100013

Spatiotemporal ecology of two Neotropical herbivorous mammals
Provedor de dados: Papéis Avulsos de Zoologia
Autores: Dias,Douglas de Matos; Almeida,Meyline de Oliveira Souza; Araújo-Piovezan,Talita Guimarães de; Dantas,José Oliveira.
Abstract On this study, we used camera traps in a Semi deciduous Seasonal Forest, northeast of Brazil, to estimate the frequencies of occurrence of two Neotropical herbivorous mammals: the spotted paca (Cuniculus paca) and the tapeti (Sylvilagus brasiliensis), analyzing their seasonal variations of spatial distribution. We also characterized the activity pattern of the species and their seasonal variation. The herbivorous frequencies of occurrence were constant during all the seasons. In general, both species were mostly active at night. However, between the rainy and dry season, we identified differences in spotted paca activity peaks. Here we present one of the first studies on the tapeti, whose ecology is understudied. Our results also show a general...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cuniculus paca; Sylvilagus brasiliensis; Agroforestry mosaic; Distribution patterns; Activity patterns.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100210

Ecology of the snake Atractus paraguayensis (Dipsadidae) in southern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Zanella,Noeli; D’Agostini,Fernanda.
ABSTRACT Knowledge of snake ecology is important to support conservation strategies. Atractus paraguayensis Werner, 1924 is a dipsadidae with semi fossorial habits distributed throughout southern Brazil. We analyzed the morphology, seasonality and reproductive biology of this species in a subtropical area in southern Brazil by combining material from scientific collections and field data. We found that females have a larger body size than males and that the reproductive cycle of females is seasonal, with vitellogenesis occurring in the warmer months of the year. Males exhibited no differences in testicle volume throughout the year; however, mating likely occurs in the spring when males are more active. Recruitment of newborns occurs in late summer. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity patterns; Reproduction; Seasonality; Subtropical region.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100314

Habitat use and seasonal activity of insectivorous bats (Mammalia: Chiroptera) in the grasslands of southern Brazil
Provedor de dados: Revista Brasileira de Zoologia
Autores: Barros,Marília A. S.; Pessoa,Daniel M. A.; Rui,Ana Maria.
In temperate zones, insectivorous bats use some types of habitat more frequently than others, and are more active in the warmest periods of the year. We assessed the spatial and seasonal activity patterns of bats in open areas of the southernmost region of Brazil. We tested the hypothesis that bat activity differs among habitat types, among seasons, and is influenced by weather variables. We monitored four 1,500-m transects monthly, from April 2009 to March 2010. Transects corresponded to the five habitat types that predominate in the region. In each sampling session, we detected and counted bat passes with an ultrasound detector (Pettersson D230) and measured climatic variables at the transects. We recorded 1,183 bat passes, and observed the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acoustic monitoring; Activity patterns; Molossidae; South American Pampas; Vespertilionidae.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200006

Reproductive activity patterns of anurans in two different altitudinal sites within the Brazilian Caatinga
Provedor de dados: Zoologia
Autores: Arzabe,Cristina.
Six different categories of breeding sites were investigated from August 1989 to July 1990 at São José do Bonfim (240 m above sea level) and Maturéia (770 m above sea level), two sites localized in the Brazilian Caatinga (State of Paraíba). A severe drought affected these areas during the study. Even so, calling males, nests and/or tadpoles of 20 species from 5 families were found. Leptodactylidae was the most numerous family, with nine species distributed among five genera. In Maturéia, due to the low evapo-transpiration rates, less variation of water levels was observed. Males of hylids and leptodactylids began their calling activities together, whereas at São José do Bonfim leptodactylids began their calling activities first. Thus, at Maturéia high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurans; Caatinga; Activity patterns; Unpredictable environment.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300022

Diet, activity and reproduction of bat species (Mammalia, Chiroptera) in Central Amazonia, Brazil
Provedor de dados: Zoologia
Autores: Bernard,Enrico.
The diet, activity and reproductive patterns of several species of bats were investigated in primary forests of Central Amazon. Between August 1996 and August 1997, using mist nets set both at canopy and understorey levels, 936 bats, belonging to 51 species, 31 genera and 6 families were captured. Fecal samples from 35 species were examined, with four food categories and 25 food items identified. Time of captures indicate a wide variation, but the major part of the species presented a peak of activity around the first hour after sunset. Three reproductive peaks were observed: October-November; January-February; and July-August, but reproductive patterns varied among the families. The structure of the bat fauna in Manaus is similar to other sites in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Activity patterns; Bats; Biodiversity; Amazon Forest; Brazil; Diet; Guilds; Primary forests; Reproductive patterns.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100016

Plasticity in the timing of activity in the Red-rumped Agouti, Dasyprocta leporina (Mammalia: Rodentia), in the Atlantic Forest of southeastern Brazil
Provedor de dados: Biota Neotropica
Autores: Magalhães,Laura Martins; Srbek-Araujo,Ana Carolina.
Abstract Timing of activity is a consequence of adaptations to daily and seasonal changes in the environment and examining these patterns is important to better understand the temporal niches of the species. Here we examine temporal activity in the Red-rumped Agouti (Dasyprocta leporina) in two fragments of Atlantic Forest and those factors that influence the circadian rhythm in the study areas. Camera traps were used to gather data in two protected areas (one montane and other coastal) in the state of Espírito Santo, southeastern Brazil. A total of 49 photos were taken in the mountains and 152 in the coastal area. Activity patterns were diurnal and bimodal, and animals were active for 14-15 hours each day. Activity peaked in the morning soon after sunrise...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dasyproctidae; Abiotic factors; Activity patterns; Circadian rhythm; Photoperiod.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000200204

Thermal ecology and activity patterns of the lizard community of the Restinga of Jurubatiba, Macaé, RJ
Provedor de dados: Brazilian Journal of Biology
Autores: HATANO,F. H.; VRCIBRADIC,D.; GALDINO,C. A. B.; CUNHA-BARROS,M.; ROCHA,C. F. D.; VAN SLUYS,M.
We analyzed the thermal ecology and activity patterns of the lizard community from the Restinga of Jurubatiba, Rio de Janeiro, Brazil. The broadest activity was that of Tropidurus torquatus, a sit-and-wait forager, while the active foraging teiid Cnemidophorus littoralis had the shortest activity. The nocturnal gekkonid Hemidactylus mabouia was found active during the day only during early morning and late afternoon, when environmental temperatures are low. Body temperature was highest for Cnemidophorus littoralis and lowest for the two Mabuya species. The patterns found here are discussed and compared to those of congeneric species in other habitats in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal ecology; Lizard community; Activity patterns; Restinga habitat.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200011