Growth of the Symbiotic Fungus of the Grass-cutting Ant Atta capiguara (Hymenoptera: Formicidae): Effect of Grass Extracts

Nenhuma Miniatura disponível

Data

2009-01-01

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

California State University

Tipo

Artigo

Direito de acesso

Acesso restrito

Resumo

The objective of this study was to evaluate the influence of grass extracts on growth of the symbiotic fungus of Atta capiguara (Hymenoptera: Formicidae: Attini), in order to obtain support information on control strategies against this pest. The radial growth of the in vitro cultivated symbiotic fungus was evaluated in the following bioassays: 1) extracts at a single concentration: leaves of Pennisetum purpureum cv. Cameron, Hyparrhenia rufa, Brachiaria brizantha cv. Marandu, Saccharum officinarum variety SP80-1842, and Paspalum spp.; 2) effect of different extract concentrations: grass extracts from bioassay 1 were prepared at concentrations of 0.25, 0.50, 1.00, and 2.00% (w.v(-1)); 3) effect of plant age and pH in the medium: this was conducted for S. officinarum only. Culture media containing B. brizantha are detrimental to growth of the symbiotic fungus of A. capiguara. Culture media containing . rufa, P. purpureum, or Paspalum spp. do not affect fungal growth, and produce growth similar to the one obtained in PDA medium without extract (control). No extract concentration effects were observed. Medium pH is an important factor in determining the effects of S. officinarum extracts on growth of the symbiotic fungus of A. capiguara.

Descrição

Idioma

Inglês

Como citar

Sociobiology. Chico: California State Univ, v. 54, n. 1, p. 283-298, 2009.

Itens relacionados