We studied the ectoparasite and the Amblyopinini beetle fauna associated with four small mammal species of the Atlantic Rainforest of Ilha Grande, an island located off the southern Rio de Janeiro State Coast, Southeastern Brazil, analyzing to what extent the parasites were specific to each region of the host body. During the study, a total of 90 individual rodents were captured: 61 Proechimys iheringi Thomas, 1911 (Echymyidae), 22 Sciurus aestuans (Thomas, 1901) (Sciuridae), 4 Oxymycterus sp. (Waterhouse, 1837), and 2 Nectomys squamipes (Brants, 1827) (Sigmodontinae). The data showed that the ectoparasites and Amblyopinini on some rodent hosts in Ilha Grande tend to prefer particular host body sites, and that some ectoparasite species sites may overlap owing to their inaccessibility to the host.Key words: small mammal, parasitim, ectoparasites, Atlantic Rainforest, rodent. Palavras-chave: pequenos mamíferos, parasitismo, ectoparasitas, Mata Atlântica, roedores. RESUMO

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. 2008. Richness, abundance, and mass in snake assemblages from two Atlantic Rainforest sites (Ilha do Cardoso, São Paulo) with differences in environmental productivity. Biota Neotrop. 8(3): http://www.biotaneotropica. org.br/v8n3/en/abstract?article+bn01408032008. Abstract:We analyzed richness, composition and mass of snakes in two sites in the Atlantic forest of Ilha do Cardoso (25° 03' S and 47° 53' W), an island (22,500 ha), Cananéia municipality, São Paulo State, Brazil. A monthly index of arthropod availability (in mm 3 ) was estimated in each site through capture rates in pit-fall traps. Fallen fruits were collected along trails in the study sites (mass of fruit gave an index of fruit availability) and small mammals were sampled in grids with 120 traps which covered the lowland (5.2 ha) and in the slope forests (3.6 ha). The abundance and mass of small mammals were standardized for the size of each sampled area (in g.ha -1 ). To sample snakes we established 20 pit-fall traps in each area and performed monthly transects in four consecutive days (totaling 1000 m long) along trails in the study sites. Snakes found were measured, weighted marked and released. Abundance and total mass of snakes were standardized by the size of each area. The areas differed consistently in in the productivity of arthropods, fruits and small mammals, and also in richness, composition and total mass of snakes. We found 36 individuals (total mass = 9884 g) of 12 snake species belonging to three Families (Colubridae, Elapidae and Viperidae) in the lowland forest, whereas in the slope forest we sampled only 9 individuals of 2 species (total mass = 1820 g). Our results suggest that the area of lowland forest, showing higher productivity of arthropods, fruits and small mammals, maintains a snake community with a higher richness, diversity and biomass than its slope forest counterpart. Keywords: Atlantic Rainforest snake assemblage, environmental productivity, snake diversity, and richness, snake seasonal activity, snake biomass. Resumo: Nós analisamos a riqueza, a composição e a massa de serpentes em dois ambientes na Mata Atlântica da Ilha do Cardoso (25° 03' S e 47° 53' W), uma ilha (22.500 ha), localizada no município de Cananéia, Estado de São Paulo, Brasil. Estimamos um índice de disponibilidade de artrópodos (em mm 3 ) em cada ambiente através da taxa de captura em armadilhas de queda estabelecidas no chão da floresta. Coletamos frutos caídos ao longo de trilhas nos ambientes estudados (a massa de frutos forneceu um índice da disponibilidade de frutos) e pequenos mamíferos foram amostrados em grades com 120 armadilhas as quais cobriram um ambiente na mata de planície (5,2 ha) e um na floresta de encosta (3,6 ha). A abundância e massa de pequenos mamíferos foi padronizada para o tamanho de cada área amostrada (em g.ha -1 ). Para amostrar as serpentes estabelecemos 20 armadilhas de queda em cada ambiente e mensalmente realizamos transectos durante quatro dias consecutivos (totalizando 1000 m de extensão em cada área) ao longo de ...

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