Selection of entomopathogenic fungi for use in combination with sub-lethal doses of imidacloprid: perspectives for the control of the leaf-cutting ant Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae)

2007 ◽  
Vol 163 (4) ◽  
pp. 233-240 ◽  
Author(s):  
Adão Valmir Santos ◽  
Bruno Lorenz de Oliveira ◽  
Richard Ian Samuels
Keyword(s):  
Entomopathogenic Fungi ◽  
Atta Sexdens ◽  
Atta Sexdens Rubropilosa ◽  
Leaf Cutting ◽  
Lethal Doses ◽  
Selection Of

scholarly journals Effects of Entomopathogenic Fungi on Individuals as Well as Groups of Workers and Immatures of Atta sexdens rubropilosa Leaf-Cutting Ants

Insects ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 10
Author(s):  
Luis Eduardo Pontes Stefanelli ◽  
Tarcísio Marcos Macedo Mota Filho ◽  
Roberto da Silva Camargo ◽  
Carlos Alberto Oliveira de Matos ◽  
Luiz Carlos Forti
Keyword(s):  
Survival Rate ◽  
Entomopathogenic Fungi ◽  
Survival Rates ◽  
The Other ◽  
Main Ingredient ◽  
Atta Sexdens ◽  
Atta Sexdens Rubropilosa ◽  
High Pathogenicity ◽  
Leaf Cutting ◽  
Ant Control

In 2009, sulfluramid, the main ingredient in toxic baits for leaf-cutting ant control, was included in Annex B of the Stockholm Convention on Persistent Organic Pollutants. This resulted in interest in the use of entomopathogenic fungi such as Beauveria bassiana and Trichoderma harzianum for leaf-cutting ant control. The efficiency of these fungi in controlling these insects and the way that ants react individually or in group to the biological risks posed by these fungi is poorly understood. For this reason, we assessed the effects of B. bassiana and T. harzianum on Atta sexdens rubropilosa larvae, pupae and workers. Moreover, we investigated whether the number of contaminated individuals within a group has an influence in controlling the spread of fungi among workers. We found that the fungus T. harzianum showed high pathogenicity against A. sexdens rubropilosa larvae and pupae, leading to faster mortality and a survival rates. On the other hand, the fungus B. bassiana was responsible for causing faster worker mortality and lower survival rates. In addition, we observed that an increase in individuals contaminated with B. bassiana or T. harzianum in the group decreases its survival rate. The results support the hypothesis that entomopathogenic fungi are efficient in controlling leaf-cutting ants when contaminated workers are allocated to groups of healthy workers.

Antibiotic-producing bacteria associated with the nests of the leaf-cutting ant Atta sexdens rubropilosa

Planta Medica ◽  
2015 ◽  
Vol 81 (11) ◽  
Author(s):  
EA Silva-Junior ◽  
CR Paludo ◽  
FS Nascimento ◽  
CR Currie ◽  
J Clardy ◽  
...  
Keyword(s):  
Atta Sexdens ◽  
Atta Sexdens Rubropilosa ◽  
Leaf Cutting

Toxic effects of leaves of Ricinus communis (Euphorbiaceae) to laboratory nests of Atta sexdens rubropilosa (Hymenoptera: Formicidae)

1996 ◽  
Vol 86 (3) ◽  
pp. 253-256 ◽  
Author(s):  
Maria José A. Hebling ◽  
Paulo Sérgio Maroti ◽  
Odair Correa Bueno ◽  
Osvaldo Aulino da Silva ◽  
Fernando Carlos Pagnocca
Keyword(s):  
Oxygen Consumption ◽  
Mortality Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Ricinus Communis ◽  
Physiological Effect ◽  
Atta Sexdens ◽  
Atta Sexdens Rubropilosa ◽  
Leaf Cutting ◽  
The Mean

AbstractLaboratory nests of the leaf-cutting ant Atta sexdens rubropilosa Forel fed daily with leaves of Ricinus communis showed a gradual decrease in fungal garden volume, a higher ant mortality rate, and fungal garden extinction after 6 weeks. The mean oxygen consumption rate of these ants was higher than that of control ants collected from nests fed with leaves of Eucalyptus alba (Myrtaceae) suggesting one or more components of the leaves of R. communis had a direct physiological effect on the ants, in addition to inhibiting fungal garden growth.

scholarly journals Microbial Communities in Different Tissues of Atta sexdens rubropilosa Leaf-cutting Ants

2017 ◽  
Vol 74 (10) ◽  
pp. 1216-1225 ◽  
Author(s):  
Alexsandro S. Vieira ◽  
Manuela O. Ramalho ◽  
Cintia Martins ◽  
Vanderlei G. Martins ◽  
Odair C. Bueno
Keyword(s):  
Microbial Communities ◽  
Atta Sexdens ◽  
Atta Sexdens Rubropilosa ◽  
Leaf Cutting ◽  
Different Tissues

scholarly journals Toxicity of sesame extracts to the symbiotic fungus of leaf-cutting ants

1990 ◽  
Vol 80 (3) ◽  
pp. 349-352 ◽  
Author(s):  
Fernando Carlos Pagnocca ◽  
Osvaldo Aulino da Silva ◽  
Maria Jose Hebling-Beraldo ◽  
Odair Correa Bueno ◽  
João Batista Fernandes ◽  
...  
Keyword(s):  
Sesamum Indicum ◽  
Atta Sexdens ◽  
Symbiotic Fungus ◽  
Atta Sexdens Rubropilosa ◽  
Leaf Cutting ◽  
Leucocoprinus Gongylophorus

AbstractExtracts of different sesame plant (Sesamum indicum) Linnaeus organs inhibited the in vitro growth of the fungus Leucocoprinus gongylophorus (Möller) (=Rozites gongylophora Möller), which is cultivated by the leaf-cutting ants of the species Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae). The presence of the factor responsible for this inhibition was detected in methanol or chloroform extracts and is constant in the plant.

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