No abstract

Our objective was to determine the mean production of entomopathogenic nematodes (EPNs) infective juveniles (IJs) from Alphitobius diaperinus and Galleria mellonella larvae and the possible morphometric changes of emergent IJs. Heterorhabditis riobravus and Steinernema carpocapsae nematodes were placed on 20 larvae of each host individually located in Petri dishes, which were maintained in an environmental control chamber. After death, each larva was individually transferred to White traps where they remained for a maximum of 20 days in environmental control chambers. With IJ multiplication, the water from each trap was separately collected, emergent IJs were counted, and mean production was calculated for each host species. Relative populations of each nematode species emerging from each host were randomly selected and miscegenated. Then, 50 IJs from each host/species were randomly selected for morphometric studies. Significant difference was seen between the two EPN species for mean IJ production values from G. mellonella larvae (P = 0.0048) but not from A. diaperinus larvae (P = 0.8883). Significant differences were also seen in total body length and width between the emergent H. riobravus and S. carpocapsae IJs (P = 0.0002).

No abstract

É com grande satisfação que, no ano do seu 25º aniversário, o Centro Nacional de Pesquisa e Conservação de Cavernas ICMBio/Cecav disponibiliza à comunidade acadêmico-científica a edição especial da Revista Brasileira de Espeleologia (RBEsp). A RBesp foi lançada em 2010 como veículo de registro e divulgação científica, com o objetivo de publicar artigos de pesquisa, resenhas originais, cartas, mapas, ensaios e relatórios cobrindo tópicos relacionados ao patri-mônio espeleológico e sua geobiodiversidade associada. A revista abrange a geologia cárstica, hidrologia, geomorfologia, espeleologia, hidrogeologia, bioespeleologia e a história da ciência espeleológica.

Among the 44 known species of Scytalopus, only 25 have some type of reproductive information available. Here we present the first description of the nesting site, nest, and eggs of the Rock Tapaculo (Scytalopus petrophilus). The nest was registered inside a ferruginous cave located in the Serra do Gandarela National Park, Minas Gerais, Brazil. The closed nest containing two eggs was collected and consisted of cryptogams, grasses, and passerine remiges. The eggs were white and measured 23.0 × 16.3 mm, and 21.7 × 17.2 mm. Building of a new nest was recorded at the same collection site, in the next breeding season. Nesting season extended at least from October to February, and the nest site was reused within and between reproductive seasons. This suggest a strong local association between the species and the ferruginous caves and it reveals the need to preserve this environment which is currently threatened by mining activities.