NATIVE AMAZONIAN FUNGI TO CONTROL TERMITES Nasutitermes sp. (BLATTODEA: TERMITIDAE)

Termites of the Nasutitermes genus are considered one of the main urban and agroforestry pests in Brazil, where the main method of control is the application of pesticides. The uso of entomopathogenic fungi to reduce the population of this plague in the environment could be use as an alternative. Th...

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Bibliographic Details
Published in:Acta biológica colombiana 2022-01, Vol.27 (1), p.36-43
Main Authors: Fernanda, Fernanda Viana, Gleison, Gleison Rafael Queiroz Mendonça, Atilon, Atilon Vasconcelos de Araujo, Leila, Leila Priscila Peters, Clarice, Clarice Maia Carvalho
Format: Article
Language:English
Subjects:
Agroforestry
Biological control
BIOLOGY
Conidia
Control methods
Endophytes
Entomopathogenic fungi
Fungi
Indigenous species
Isoptera
Metarhizium
Metarhizium anisopliae
Mortality
Nasutitermes
Pest control
Pesticide application
Pesticides
Pests
Population studies
Thermites
Tolypocladium
Virulence
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Summary:Termites of the Nasutitermes genus are considered one of the main urban and agroforestry pests in Brazil, where the main method of control is the application of pesticides. The uso of entomopathogenic fungi to reduce the population of this plague in the environment could be use as an alternative. The goal of this study was to evaluate the virulence of isolates native Amazonian fungi belonging to the Tolypocladium endophyticum, Metarhizium anisopliae and Metarhizium marquandii species for the control of Nasutitermes sp. The strains of T. endophyticum (4.439), M. anisopliae (4.443) and M. marquandii (4.472) with their respective isolation codes, were evaluated using suspensions at concentrations of 105, 106, 107 and 108 conidia/mL against the termites. The fungi were characterized to species level by molecular analysis. The greatest virulence was registered with T. endophyticum (4.439), with a mortality of 100 % on the 4th day of treatment for all analyzed concentrations. The M. anisopliae strain (4.443) proved to be efficient, causing a mortality of 100 % on the 7th and 6th days at dilutions of 107 and 108 conidia/mL, respectively. Rates lower than 100 % were registered with M. marquandii (4.472). Therefore, the three fungal strains showed virulence against the termites Nasutitermes sp. In this study, the fungi Tolypocladium endophyticum and Metarhizium marquandii are reported for the first time for the biological control of pests, indicating the potential of native Amazonian fungi for the biological control of thermites Nasutitermes sp.
ISSN:0120-548X
1900-1649
DOI:10.15446/abc.v27n1.86848