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The role of Cerradomys Subflavus (Rodentia, Cricetidae) as seed predator and disperser of the palm Allagoptera arenaria Mastozool. neotrop.
Grenha,Viviane; Macedo,Margarete V.; Pires,Alexandra S.; Monteiro,Ricardo F..
Small rodents are among the most abundant vertebrate seed predators in the tropics and palm fruits are a rich source of energy for them. Allagoptera arenaria is a nurse plant species at restinga vegetation in southeastern Brazil. Forty-five adult A. arenaria were marked to estimate fruit crop size and seed predation by rodents. Two trapping sessions were carried out to identify the rodent seed predators. In addition, a fruit removal experiment was conducted to investigate the role of rodents as seed dispersers. Of the 7409 seeds collected, 24% were damaged by rodents. Predation rates ranged from 0 to 64% per plant and the number and the proportion of damaged seeds increased significantly with crop size. In the removal experiments, 64% of the fruits were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arecaceae; Rodentia; Seed dispersal; Seed predation; Arecaceae; Depredación de semillas; Dispersión de semillas; Rodentia.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100007
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Preventing injuries caused by radiotelemetry collars in reintroduced red-rumped agoutis, Dasyprocta leporina (Rodentia: Dasyproctidae), in Atlantic Forest, southeastern Brazil Rev. Bras. Zool.
Cid,Bruno; Costa,Rodrigo de C. da; Balthazar,Daniel de A.; Augusto,Anderson M.; Pires,Alexandra S.; Fernandez,Fernando A. S..
Reintroduction has been recognized as a powerful conservation tool, but in order to ensure its success, animal monitoring is highly recommended. One way to monitor released animals is to put radiotelemetry collars on them. These devices, however, can harm the subjects, causing serious wounds. Our objectives in this work were to describe the injuries caused by a radiotelemetry collar model on reintroduced agoutis and to propose modifications to it. We equipped agoutis with TXE-311C radio collars (Telenax Wildlife Telemetry) before releasing them in the wild. They acquired serious wounds and one animal died. We then modified the collar structure to reduce its width and retention of water. After these modifications, the injuries did not occur again. As...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Animal welfare; Marking effects; Radiocollars; Rainforest; Rodents; Telemetry.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000100015
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Living and lost mammals of Rio de Janeiro's largest biological reserve: an updated species list of Tinguá Biota Neotropica
Travassos,Leandro; Carvalho,Israel Dias; Pires,Alexandra S.; Gonçalves,Sérgio Nunes; Oliveira,Paulo Malvino; Saraiva,Alexandre; Fernandez,Fernando A. S..
Abstract: The Tinguá Biological Reserve (TBR) is the largest protected area of this category in Rio de Janeiro state. Here, for the first time, we present the historical composition of terrestrial mammals' assemblage of TBR region. An inventory was conducted using transect surveys, nonstandard transects, survey of museum specimens and informal reports. Considering all the data, eighty-five species were recorded, placing TBR as the second one in the number of mammals recorded in "Serra do Mar" ecoregion of Atlantic Forest and in the Rio de Janeiro state. Among the species with historical records are the jaguar (Panthera onca) and the golden-lion-tamarin (Leontopithecus rosalia) while the current presence of the maned wolf (Chrysocyon brachyurus) was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mammal community; Atlantic Forest; Tinguá Biological Reserve; Endangered species; Museum data.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200307
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