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	Biota Neotropica (5)
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	Info:eu-repo/semantics/other (1)

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Small mammal selection and functional response in the diet of the maned wolf, Chrysocyon brachyurus (Mammalia: Canidae), in southeast Brazil

Mastozool. neotrop.

Bueno,Adriana A.; Motta-Junior,José Carlos.

Data reported here are intended to describe patterns of predation by a solitary hunter, as well as to bring new insights into the predator-prey relationship in the Neotropical region. The goal of this study was to verify if there was small mammal selection in the diet of the maned wolf. Also, we attempt to test for a functional response in relation to the consumption of small mammals. The study was carried out in the Ecological Station of Itirapina (ESI), São Paulo, Brazil. Faeces collection and small mammal abundance survey by pitfall trapping were conducted simultaneously during 2000-2002. The maned wolf was selective in the consumption of small mammals. Calomys tener and Oligoryzomys nigripes (Muridae) were consumed less than expected by chance, whereas...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Chrysocyon brachyurus; Prey selection; Prey switching; Small mammals.

Ano: 2006

URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000100002

Miscellaneous ecological notes on Brazilian birds of prey and owls

Biota Neotropica

Motta-Junior,José Carlos; Granzinolli,Marco Antonio Monteiro; Monteiro,Alberto Resende.

Sixteen opportunistic field observations of eight species of Brazilian raptors (Falconiformes and Strigiformes) are reported here as a contribution to the knowledge of the natural history of these poorly studied birds in Brazil. The observations are related to the food habits (Buteo albicaudatus, Herpetotheres cachinnans, Milvago chimachima, Falco femoralis), reproduction (Asio stygius, Megascops choliba), mobbing behaviour elicited in other birds (Geranospiza caerulescens, H. cachinnans, F. femoralis, A. stygius, Athene cunicularia) and a rare case of leucism in owls (A. cunicularia).

Tipo: Info:eu-repo/semantics/other

Palavras-chave: Falconiformes; Strigiformes; Food habits; Breeding; Mobbing behaviour; Leucism; Brazil.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000400042

Ferruginous Pygmy-owl (Glaucidium brasilianum) predation on a mobbing Fork-tailed Flycatcher (Tyrannus savana) in south-east Brazil

Biota Neotropica

Motta-Junior,José Carlos.

I observed, and documented in detail, Ferruginous Pygmy Owl (Glaucidium brasilianum) predation on a mobbing Fork-tailed Flycatcher (Tyrannus savanna) in south-east Brazil. Events described in this account are supported with original photos. In addition to the predation event, I list 12 mobbing bird species that were alarmed by the presence of this raptor in the study area, including Trochilidae (Eupetomena macroura), Formicariidae (Formicivora rufa), Tyrannidae (Camptostoma obsoletum, Elaenia cristata, E. flavogaster, E. chiriquensis, T. savana, Myiarchus tyrannulus), Turdidae (Turdus leucomelas, T. amaurochalinus, T. rufiventris) and Emberizidae (Coryphospingus cucullatus). The Fork-tailed Flycatcher may represent 35-76.8% of the pygmy-owl body mass...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Owls; Tyrant-flycatchers; Mobbing behaviour; Predation; Eyespots; Brazil.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200038

Aves da Estação Ecológica de Itirapina, estado de São Paulo, Brasil

Biota Neotropica

Motta-Junior,José Carlos; Granzinolli,Marco Antonio Monteiro; Develey,Pedro Ferreira.

O cerrado é um dos biomas mais ameaçados no mundo, apresentando algumas das maiores taxas de destruição causadas principalmente pela agropecuária. Poucos estudos têm avaliado a diversidade local de aves no cerrado, especialmente em áreas marginais desse bioma. A Estação Ecológica de Itirapina (EEI) contém um dos últimos remanescentes de campos naturais e cerrados do estado de São Paulo. Um levantamento das aves desta unidade de conservação, feito tanto por observações casuais como sistemáticas entre 1998 e 2007, e complementado por revisão de literatura, revelou que 231 espécies apresentaram ocorrência recente na área. Desse total, 38 espécies (16,4%) encontram-se na lista de espécies ameaçadas para o estado de São Paulo e/ou são endêmicas do Cerrado, um...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Avifauna; Brasil; Cerrado; Conservação; Endemismo; Espécies ameaçadas.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000300019

Feeding ecology of the maned wolf, Chrysocyon brachyurus (Illiger, 1815) (Mammalia: Canidae), in the Ecological Station of Itirapina, São Paulo state, Brazil

Biota Neotropica

Bueno,Adriana de Arruda; Belentani,Sonia Cristina da Silva; Motta-Junior,José Carlos.

The feeding ecology of the maned wolf (Chrysocyon brachyurus) was studied from 1998 to 2002 in the Ecological Station of Itirapina, São Paulo State, southeastern Brazil, including estimates of prey number and biomass consumption. A total of 325 faecal samples was collected in the area. The species is omnivorous, with a broad diet including 68 species or morphospecies of fruits and animals. Armadillos (Dasypodidae), wolf's fruit (Solanum lycocarpum) and small mammals (mostly Clyomys bishopi) were the bulk of the diet, comprising 72.8 % of the total estimated biomass consumed (185,323.4 g). In terms of frequency of occurrence, on the other hand, only small mammals and other miscella-neous fruits yielded 43.4 % of the total occurrences (N = 1,054). Animal...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Chrysocyon brachyurus; Maned wolf; Savannah; Grassland; Feeding ecology; Diet; Brazil.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200007

Bird frugivory and seed germination of Myrsine umbellata and Myrsine lancifolia (Myrsinaceae) seeds in a cerrado fragment in southeastern Brazil

Biota Neotropica

Guerta,Rafael Soave; Lucon,Lucas Gustavo; Motta-Junior,José Carlos; Vasconcellos,Luís Augusto da Silva; Figueiredo,Rodolfo Antônio de.

Birds are known to be important dispersers of plants, since the passage of seeds through the digestive tract often has a positive influence on germination percentage and speed. In this study, proportions of germination in different substrates were compared between Myrsine (Myrsinaceae) seeds collected manually and those ingested by birds. The guilds of birds that fed on M. umbellata and M. lancifolia were identified and comprise 24 and 12 species, respectively. A higher germination proportion was found among seeds defecated by birds and sowed in the study area. The study also found differences between the guilds of frugivores in both synchronopatric species. Therefore, we suggest that M. umbellata and M. lancifolia are important food sources by birds that...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Zoochory; Seed dispersal; Myrsine; Frugivorous birds; Cerrado.

Ano: 2011

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400005

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