Diversidade de formigas edáficas (Hymenoptera: Formicidae) em fragmentos da Mata Atlântica do estado de São Paulo (original) (raw)
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2011
Brazilian Journal of Biosciences I n stit u t o d e B io c i ê ncias U FRGS Diversidade de Formicidae (Hymenoptera) em um fragmento de Floresta Estacional Semidecídua no Noroeste do estado de São Paulo, Brasil RESUMO: (Diversidade de Formicidae (Hymenoptera) em um fragmento de Floresta Estacional Semidecídua no Noroeste do estado de São Paulo, Brasil). Devido ao escasso conhecimento sobre a mirmecofauna do Noroeste do estado de São Paulo, o presente estudo teve como objetivo conhecer a diversidade de Formicidae, relacionando os resultados com a variação climática ao longo de um ano. As coletas foram feitas mensalmente, utilizando armadilhas do tipo pitfall. Foram amostradas 25 espécies de 15 gêneros e sete subfamílias. Myrmicinae foi a subfamília com o maior número de espécies amostradas, seguida por Formicinae e Ponerinae. De acordo com o teste de Wilcoxon, a riqueza, a equabilidade e a diversidade de espécies, foram significativamente maiores na estação chuvosa. Os resultados obtidos sugerem que a abundância de formigas está significativamente relacionada à variação da temperatura, enquanto que a estrutura da comunidade está relacionada às variações térmicas e pluviométricas.
Iheringia. Série Zoologia, 2010
Epigeic ants diversity (Hymenoptera, Formicidae) in three environments in Mata dos Godoy State Park, Londrina, State of Paraná, Brazil. Considering the poor knowledge about the ant fauna of the state of Paraná, Brazil, this study aimed to compare the ant assemblages in three environments (primary forest, reforested area and secondary growth forest) of Mata dos Godoy State Park, municipality of Londrina. This study was carried out between December 2004 and March 2005. Ant collections were made using sardine baits and pitfall traps. We collected 102 ant species belonging to 38 genera of nine subfamilies. Myrmicinae was the richest subfamily (58 spp.) followed by Formicinae (20 spp.), Ponerinae (9 spp.), Ectatomminae, Heteroponerinae, Ecitoninae and Pseudomyrmecinae (3 species each), Dolichoderinae (2 spp.) and Proceratiinae (1 specie). The richest genera were Pheidole Westwood, 1839 and Camponotus Mayr, 1861, respectively with 14 and 11 species. The primary forest showed the highest richness values, number of exclusive species and diversity (92 spp., 20 spp. and H' = 3.51, respectively), followed by the reforestation area (73 spp., 6 spp. and H' = 3.47) and the secondary growth forest (67 spp., 4 spp. and H'= 3.34). The similarity values between the three environments were rather high. In each sample series, the observed richness was between 33 and 53 species and the estimated richness was between 35 and 86 species. The occurrence of seven guilds of ants was defined: omnivore species, specialist predators, generalist predator litter, armyants, vegetation dominant, soil dominant and fungus growers.
Iheringia. Série Zoologia, 2006
Iheringia, Sér. Zool., Porto Alegre, 96(1):95-101, 30 de março de 2006 Riqueza de formigas (Hymenoptera, Formicidae) da serapilheira em fragmentos de... Riqueza de formigas (Hymenoptera, Formicidae) da serapilheira em fragmentos de floresta semidecídua da Mata Atlântica na região do Alto do Rio Grande, MG, Brasil ABSTRACT. Litter ants richness (Hymenoptera, Formicidae) in remnants of a semi-deciduous forest in the Atlantic rain forest, Alto do Rio Grande region, Minas Gerais, Brazil. The community of Formicidae (Insecta, Hymenoptera) in semideciduous seasonal forest of the Atlantic rain forest biome was studied in remnants ranging from 2.99 to 45.45 ha, in the region of the Alto do Rio Grande, Minas Gerais State, Brazil. The ants collected in 15 samples of litter of one square meter each, using Winkler extractors method, in each forest fragment. Each sample were taken at intervals of 50 meters. A total of 142 species of ants, were distributed into 40 genera, 23 tribes and 10 subfamilies. The communities showed a high richness and diversity indices values. The size of the fragments did not influence the ant richness.
Levantamento da diversidade de formigas (Hymenoptera: Formicidae) na região urbana de Uberlândia, MG
Neotrop …, 2006
Uberlândia, MG, Brazil, underwent an accelerated process of urbanization with a population growth of 3,54% each year, higher than the national average. One of the problems emergent from urbanization is the use of different habitats for a great variety of insects. The objective of this study was to identify species of house-invading ants that occur in the urban area of Uberlândia. The occurrence of the house-invading species in regard to the time of urbanization, neighborhood infrastructure, age and maintenance of private houses was also assessed. The ants were collected using bait-traps in 120 residences from 12 neighborhoods which were put in three groups. Fourteen species of ants were catalogued, with Camponotus (Mayr), Monomorium (Mayr) and Tapinoma (Foerster) being the most frequent genera. Only Camponotus vittatus (Forel), Monomorium pharaonis (L.), Tapinoma melanocephalum (Fabricius) and Brachymyrmex sp. (Mayr) were collected in all three groups. The relation between the ants collected and the age and maintenance of the private houses showed that Paratrechina longicornis (Latreille) was most frequent (60%) in poorly preserved or precarious constructions. Whereas, C. vittatus and Camonotus melanoticus (Emery) occurred in all categories of maintenance. Overall, C. vittatus which had not been found in any previously published survey of urban ants, was the most frequent species in urban areas of the Cerrado.
2016
Agriculture has a central role on the development of the human society. However, an intensive system of production, with the hardly use of machinery, insecticides and herbicides, was increased the preoccupation with the degradation of soil. Sustainable landuses had been implemented in substitution of the conventional system. Furthermore, monitoring procedures for the evaluation of the impacts of land-use systems on the macrofauna are adopted, as the proposed by the Programme Tropical Soil Biology and Fertility (TSBF). One of the suggested methods, which has the same name, is the extraction of a monolith with 25 x 25 x 30 cm. The monoliths were separated in layers with 10 cm and the edaphic macrofauna was sampled. Some methods were designed for sampling subterranean ants, but the majority uses attractive (baits), this fact can influence the determination of species occurrence when we evaluate the vertical stratification of the communities. However, the use of monoliths has shown favorable to get information about vertical stratification. In the present work, we characterized subterranean ant assemblages from three regions of southern Brazil sampled by TSBF (Chapter I) and evaluate the influence of land-use systems on diversity of ants (richness and composition) (Chapter II).