Cutting preference of Acromyrmex crassispinus por diferentes especies de eucaliptos em laboratorio

The search for new leafcutter ant management and control methods have been the aim of several studies over the country, propelled by economic and environmental aspects. The establishment of resistant or less preferred species for the cut can contribute substantially in this subject. This way, the ob...

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Veröffentlicht in:Ciência florestal 2014-10, Vol.24 (4), p.867
Hauptverfasser: Rosado, Joao Luis Osorio, Loeck, Alci Enimar, Freitas, Deise Farias, de Goncalves, Michel Goncalves, Drose, William, da Cunha, Uemerson Silva, Finkenauer, Elder
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Zusammenfassung:The search for new leafcutter ant management and control methods have been the aim of several studies over the country, propelled by economic and environmental aspects. The establishment of resistant or less preferred species for the cut can contribute substantially in this subject. This way, the objective of this study was to evaluate the cutting preference between the species Corymbia citriodora, Eucalyptus benthamii, Eucalyptus camaldulensis, Eucalyptus dunnii, Eucalyptus globulus and hibrido de Eucalyptus urophylla x Eucalyptus grandis by Acromyrmex ambiguus and Acromyrmex crassispinus in laboratory. Therefore, leafs were offered simultaneously to six colonies of each species in bioassays with chance to choose. However, in the tests without chance to choose, only the least preferred species in the previous test were utilized. For Acromyrmex crassispinus, the species Eucalyptus camaldulensis and hibrido de Eucalyptus urophylla x Eucalyptus grandis were the most cutted, besides Corymbia citriodora, Eucalyptus dunni and Eucalyptus globules were less preferred. Acromyrmex ambiguus showed similar preference pattern, adding Eucalyptus benthamii among the most preferred one and excluding Eucalyptus dunnii from the least preferred. Keywords: leafcutter ants; silviculture; resistance; antixenose. A busca por novos metodos de manejo e controle de formigas-cortadeiras vem sendo enfoque de inumeros estudos pelo pais, impulsionada por aspectos economicos e ambientais. O estabelecimento de especies resistentes ou menos preferidas ao corte pode contribuir substancialmente neste sentido. Logo, o objetivo deste estudo foi avaliar a preferencia de corte entre as especies Corymbia citriodora, Eucalyptus benthamii, Eucalyptus camaldulensis, Eucalyptus dunnii, Eucalyptus globulus e hibrido de Eucalyptus urophylla x Eucalyptus grandis por Acromyrmex ambiguus e Acromyrmex crassispinus em laboratorio. Para isso, folhas foram ofertadas, simultaneamente, para seis colonias de cada especie em bioensaios com chance de escolha. No entanto, nos testes sem chance de escolha, apenas as especies menos preferidas pelo teste anterior foram utilizadas. Para Acromyrmex crassispinus, as especies Eucalyptus camaldulensis e hibrido de Eucalyptus urophylla x Eucalyptus grandis foram mais cortadas, enquanto que as especies Corymbia citriodora, Eucalyptus dunnii e Eucalyptus globulus foram menos preferidas ao corte. Acromyrmex ambiguus apresentou padrao similar de preferencia, adicionando-se Eu
ISSN:1980-5098