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BIBTEX RIS

Habitat Complexity and Caryocar brasiliense Herbivores (Insecta: Arachnida: Araneae)

2012; Florida Entomological Society; Volume: 95; Issue: 4 Linguagem: Inglês

10.1653/024.095.0402

ISSN

1938-5102

Autores

Germano Leão Demolin Leite, Ronnie Von dos Santos Veloso, José Cola Zanúncio, Chrystian Iezid Maia Almeida, Paulo Sérgio Fiúza Ferreira, Geraldo Wilson Fernandes, Marcus Alvarenga Soares,

Tópico(s)

Ecology and Vegetation Dynamics Studies

Resumo

Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees have a wide distribution in the cerrado. This plant is protected by federal laws and is left in deforested areas of the cerrado. This situation increases the damage to leaves, flowers, and fruits from chewing insects. We studied the effect of habitat complexity and plant architecture on the diversity and abundance of the Lepidoptera, Coleoptera, and Hymenoptera herbivores and their predators on trees of C. brasiliense in cerrado, pasture, and on the Campus of the Federal University of Minas Gerais. We observed 13 rare, 2 common, and 1 constant species of herbivores insects; and 3 rare, 8 common, and 1 constant species of predators on trees. Higher diversities and number of species of herbivores insects and their predators were observed in pasture than in the cerrado and on the campus of the Federal University of Minas Gerais. Herbivorous insects were most abundant in pasture and least abundant on the university campus. Predators were most abundant in pasture and least abundant in the cerrado. Ants, spiders, and predatory bugs are important in the reduction of the defoliators and leaf miners insects. The percentages of defoliation and populations of defoliators and ants were higher on C. brasiliense trees with wider crowns. We found a positive correlation of soil aluminum concentration with percent defoliation and numbers of lepidopteran leaf miners. On the other hand, increased soil pH was correlated with reduction in percent defoliation and numbers of lepidopteran leaf miners.

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