Riqueza de mamíferos de grande e médio porte do Parque Nacional da Serra do Divisor (Acre, Brasil)

CALOURO, A.M. 1999. Riqueza de mamíferos de grande e médio porte do Parque Nacional da Serra do Divisor (Acre, Brasil). Revista Brasileira de Zoologia 16(2):195-213.

Abstract. The richness of the large and medium-sized mammals of the Serra do Divisor National Park (Acre, Brazil). The objective of the present study was to characterize the richness (number of species) of large and medium-sized mammals, and the antropic threats in the Parque Nacional da Serra do Divisor (PNSD). In 31 days data were collected through direct observations or evidences (bones, hairs, vocalizations and tracks) along pre-existing trails distributed in different types of vegetation. Wild mammals captured by local people were also considered. They were found 44 species of terrestrial mammals (with the exception of small mammals and bats) and two species of cetaceans, representing 73% of the total predicted, according to the literature and information of local dwellers were registered in PNSD. They exist in the are two species classified by IUCN (1996) as "Endangered" [Cacajao calvus rubicundus (I. Geoffroy, 1806) and Priodontes maximus (Kerr, 1792)] and five as "Vulnerable" [Ateles chamek (Humboldt, 1812), Callimico goeldii (Thomas, 1904), Lagothrix lagotricha poeppigii (Humboldt, 1812), Myrmecophaga tridactyla Linnaeus, 1758 and Inia geoffrensis (Blainville, 1817)]. Given that subsistence and commercial hunting are common in the PNSD, mammals more affected by hunting [Ateles chamek (Humboldt, 1812), Lagothrix lagotricha (Humboldt, 1812), Tayassu pecari (Link, 1795)] were observed only in the more remote areas such as Serra do Divisor, Rio Moa. In comparison with others areas, the results indicate that PNSD has high richness of the mammals, with special attention to the 14 primates species registered.

The action of post-dispersal beetles (Coleoptera: Scarabaeidae) and ants (Hymenoptera: Formicidae) on scats of Didelphis spp. (Mammalia: Didelphidae)

CÁCERES, N.C.; MONTEIRO-FILHO, E.L.A. 2006. The action of post-dispersal beetles (Coleoptera: Scarabaeidae) and ants (Hymenoptera: Formicidae) on scats of Didelphis spp. (Mammalia: Didelphidae). Revista de Biología Tropical 54(4):1197-1203.

Abstract. A two year study of dung beetles and ants acting on scats of two species of opossum (Didelphis spp.) was carried out. Scats were left in the field in order to detect post-dispersal agents. A portion of each scat (30%) was examined for seeds in the laboratory. Beetles were recovered from burrows (51% of 84 faecal samples left in the field) where they either buried scats of opossums or were attracted, together with ants, to pitfalls (N= 10) baited with opossum scats. Dung beetles were the main post-dispersal agents of seeds found in scats of opossums, rolling the scats away or burying then on the site of deposition. They buried faeces at 4 to 15 cm in depth (N= 22 tunnels). The main dung beetles identified (medium to large size) were Eurysternus (28.7 % in pitfalls) and Dichotomius (13.7 %), Coprophanaeus (seen only directly on faeces), besides small-bodied beetles (<10 mm; 57.6 %). The ant Acromirmex sp. transported some seeds from scats. This species was present in 25.5% of all Formicidae samples (pitfall). These post-dispersal agents contribute to avert scat seed predators such as rodents, and to accelerate seed bank formation.

Variatión geográfica del zorro Lycalopex culpaeus (Mammalia, Canidae) en Chile: implicaciones taxonómicas

GUZMÁN, J.A.; D'ELÍA, G.; ORTIZ, J.C. 2009. Variatión geográfica del zorro Lycalopex culpaeus (Mammalia, Canidae) en Chile: implicaciones taxonómicas. Revista de Biología Tropical 57(1-2):421-432.

Abstract. Geographic variation of the fox Lycalopex culpaeus (Mammalia, Canidae) in Chile: taxonomic implications. We studied the geographic variation of skulls of Lycalopex culpaeus using qualitative and quantative analyses. The sampling area covered Chile, from its northern portion, to Tierra del Fuego and the neighbouring Hoste Island, as well as part of Argentina. Five subespecies are currently recognized from this large area. We found two morphotypes that are segregated geographically. Both groups mostly differ by morphometric attributes, followed by qualitative features. Specimens from northern Chile (Tarapacá and Antofagasta) have small skulls, short rostrum, a liriform sagital zone, and lack the interparietal crest. The second group is formed by specimens from north-western and central Argentina, central-south Chile, Patagonia, and the austral islands of Tierra del Fuego and Hoste. This group presents a strong sagital crest, large rostrum, and a large skull. Our results agree with observed patterns of mitochondrial DNA variation. We propose to retain the name L. c. andinus for the populations of northern Chile and to synonymize L. c. magellanicus, L. c. lycoides, and L. c. smithersi under L. c. culpaeus.

Journals: Ecology

Ecology

- Abreviatura: Ecology.

- Home Page: http://www.esajournals.org/loi/ecol

- Qualis CAPES: A1 (Biodiversidade, Ciências Biológicas I), A2 (Ciências Biológicas III).

- Taxa de Publicação: Não há.

- Idiomas: Inglês.

- Disponibilidade: Restrito. Poucos há artigos são de acesso livre no site.

- Submissão: Online, pelo sistema EcoTrack, com acesso na home page.

Criado em 1920, o periódico Ecology publica pesquisas e artigos sintéticos em todos os aspectos da ecologia, com ênfase particular em artigos que desenvolvam novos conceitos em ecologia, que testem teorias ecológicas, ou que levem a uma maior valorização pela diversidade do fenômeno ecológico. Abordagens teóricas, analíticas, experimentais, empíricas, históricas e descritivas são todas apreciadas, embora seja dada preferência a pesquisas e sínteses que levem a generalizações potencialmente aplicáveis a outras espécies, populações, comunidades, ou ecossistemas. Incluídos dentro do periódico estão artigos de respostas fisiológicas de organismos individuais ao seu ambiente biótico e abiótico, ecologia genética e evolução, a estrutura e dinâmica de populações, interações entre indivíduos da mesma ou de espécies diferentes, o comportamento de indivíduos e grupos de organismos, a organização de comunidades biológicas, ecologia de paisagem, e processos ecossistêmicos. Artigos reportando pesquisas ecológicas em todos os tipos de organismos e ecossistemas são bem-vindos. Novas metodologias com um potencial para uso amplo em ecologia também são de interesse. Artigos que são bem embasados em ecológica teórica e tem amplas implicações em políticas ambientais ou manejo de recursos podem ser bem adequados para publicação no periódico Ecological Applications, mas também são bem-vindos em Ecology caso eles cumprirem os critérios gerais a cima.

Effects of fragmentation of the Atlantic forest on mammal communities in south-eastern Brazil

CHIARELLO, A.G. 1999. Effects of fragmentation of the Atlantic forest on mammal communities in south-eastern Brazil. Biological Conservation 89:71-82.

Abstract. Six Atlantic forest reserves, two large (c. 20,000 ha each), two medium-sized (c. 2,000 ha each) and two small (c. 200 ha each), located in northern Espírito Santo, south-eastern Brazil were censured for mammals from October 1994 to April 1996. Diurnal and nocturnal line-transect sampling was used for censusing mammals > 1 kg body weight, and the relative abundance of species in the six fragments was compared. The number of mammal species recorded in the reserves was strongly related to the forest area, the richest community being recorded in the two large reserves and the poorest in the two small reserves. The large reserves had a structurally more complex community, with top predators, large, terrestrial frugivores and large myrmecophages. The mammal community of the small and the medium-sized reserves was impoverished and less complex. Frugivores were numerically predominant in both large and medium-sized reserves, whereas herbivores dominated the mammal community of the small reserves, mainly through the absence of agoutis Dasyprocta leporina and the high density of maned sloth Bradypus torquatus in the two small reserves. The lack of predators and the proliferation of secondary vegetation and lianas throughout the small reserves are probably the main causes for the success of arboreal folivores there. Illegal hunting was found to reduce the encounter rates of mostly large, terrestrial frugivores such as agoutis, pacas Agouti paca, peccaries Pecari tajacu and Tayassu pecari and deer Mazama spp., and is contributing to keep the population of the surviving species low.

Journals: Genetics and Molecular Biology

Genetics and Molecular Biology

- Abreviatura: Genet. Mol. Biol.

- Home Page: http://www.gmb.org.br/

- Qualis CAPES: B2 (Biodiversidade, Ciências Biológicas I), B4 (Ciências Biológicas II e III).

- Taxa de Publicação: Sim.

- Idiomas: Inglês.

- Disponibilidade: Todos os artigos estão disponíveis pelo Sciello.

- Submissão: On-line, pelo sistema ScholarOne Manuscripts, com acesso na home page.

A Genetics and Molecular Biology (originalmente chamada de Revista Brasileira de Genética / Brazilian Journal of Genetics) é uma publicação da Sociedade Brasileira de Genética.

O periódico considera contribuições que apresentem os resultados de pesquisas originais em genética, evolução e disciplinas de ciências relacionadas. Manuscritos apresentando apenas métodos e aplicações, sem uma análise de dados genéticos, não serão considerados.

Manuscritos considerados em conformidade com o escopo do periódico, julgados pelo Editor em conjunto com a Comissão Editorial, são revisados por um Editor Associado e dois ou mais revisores externos. A aceitação pelo Editor é baseada na qualidade do trabalho como contribuição substancial ao campo e a apresentação geral do manuscrito.