SciELO - Scientific Electronic Library Online

 
vol.44 issue4Dynamics of rainfall pH in Passo Fundo, Rio Grande do Sul, BrazilToxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Pesquisa Agropecuária Brasileira

Print version ISSN 0100-204X

Abstract

NICKELE, Mariane Aparecida; REIS FILHO, Wilson; OLIVEIRA, Edilson Batista de  and  IEDE, Edson Tadeu. Density and size of Acromyrmex crassispinus nests in Pinus taeda plantations. Pesq. agropec. bras. [online]. 2009, vol.44, n.4, pp. 347-353. ISSN 0100-204X.  http://dx.doi.org/10.1590/S0100-204X2009000400003.

The objective of this work was to evaluate the density and size of Acromyrmex crassispinus nests in Pinus taeda plantations along the year. The experiments were carried out in Rio Negrinho and Três Barras, SC, Brazil, in P. taeda plantations of different ages (recently planted and three and six years old). Three plots of one hectare were delimited in each treatment. The nests were classified according to three size classes: class I, up to 30 cm diameter; class II, 31 up to 60 cm; class III, above 61 cm. The density of A. crassispinus nests was low in recently planted areas, nearly twofold in three year-old plantations, and it reduced when the forest was six years old. The greatest nest density occurred in the period from December to April. The nests size increased along with the age of the P. taeda plantations.

Keywords : Formicidae; leaf-cutting ants; forest pests; reforestation.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese