Data/hora: 03/07/2024 15:46:58

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	30/10/2007	
Data da última atualização: 	09/11/2007	
Autoria: 	RESENDE, M. A. A.; LUCIA, T. M. C. D.	
Título: 	Eucalyptus citriodora e cortado por formigas?	
Ano de publicação: 	1999	
Fonte/Imprenta: 	Revista Arvore, Vicosa, MG, v.23, n.1, p.69-74, 1999.	
Idioma: 	Inglês	
Conteúdo: 	It is well known that leaf-cutting ants are selective, that is,  some plant species may from their attack. There is a popular belief that Eucalyptus citriodora is not cut by ants due to itshigh oil content and leaf pubescence but forest companies have different points of view about this. An experiment was conducted to elucidate these conflicting positions. Under laboratory conditions both three month old seedlings and regrowth leaves were offered to two colonies of Atta laevigata and six of Acromyrmex subterraneus. Four colonies of each leaf-cutting species were utilized in the field, in each of two situations: at an area without and another with native vetation. In both areas four E. citriodora seedlings were planted at the same distance from each nest; cut leaves of regrowth plants were also offered to lhe colonies in these areas. In the laboratory all the seedlings were attacked by A. laevigata but in an irregular manner, depending on colony size. The largest colony completely defoliated all the seedlings while the smallest removed 42 to 100% of the leaves. That same leaf-cutting ant species also attacked E. citriodora in the field. Defoliation was rapid in the clean area. In 20 days the ants cut up to 80% of the seedlings offered in the area wit native vegetation. Similar results  were obtained when leaves were offered. Acromyrmex subterraneus subterraneus was much more selectivi. The workers cut only 10% of the seedlings or leaves offered in clean areas. It can, then, be concluded that E. citriodora is indeed eagerly sought by Atta laevigatta but not so by A. subterraneus subterraneus.	
Palavras-Chave: 	Acromyrmex subterraneus; Atta laevigata; citriodora; E; Eucalyptus; Formiga cortadeira.	
Categoria do assunto: 	--	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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