期刊
REVISTA BRASILEIRA DE ZOOLOGIA
卷 25, 期 3, 页码 445-450出版社
SOC BRASILEIRA ZOOLOGIA, UNIV FEDERAL PARANA
DOI: 10.1590/S0101-81752008000300009
关键词
biodiversity; community structure; forest; savanna; Trachymyrmex
类别
资金
- Fundacao de Amparo a Pesquisas de Minas Gerais [CRA-1419/05]
- Conselho Nacional de Pesquisas a Desenvolvimento Cientifico a Tecnologico
Fungus-growing ants (tribe Attini) are characteristic elements of the New World fauna. However, there is little information on the patterns of diversity, abundance, and distribution of attine species in their native ecosystems, especially for the so-called lower genera of the tribe. A survey of attine ant nests (excluding Atta Fabricus,1804 and Acromyrmex Mayr,1865) was conducted in a variety of savanna and forest habitats of the Cerrado biome near Uberlandia, Brazil. In total, 314 nests from 21 species of nine genera were found. Trachymyrmex Forel, 1893 was the most diverse genus with 10 species. Eighteen species were found in the savannas, including Mycetagroicus cerradensis Brandao & Mayhe-Nunes, 2001, a species from a recently-described genus of Attini, whereas in the forests only 12 species were found. Forest and savannas support relatively distinct faunas, each with a number of unique species; the species present in the forest habitats did not represent a nested subset of the species found in the savannas. Furthermore, although many species were common to both types of vegetation, their abundances were quite different. The density of attine nests is relatively high at some sites, exceeding an estimated 4,000 nests per hectare. In this sense, attine ants can be regarded as prevalent invertebrate taxa in the Brazilian Cerrado.
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