Capacidade de busca de Euborellia annulipes (Lucas) (Dermaptera:Anisolabididae) por Diatraea saccharalis (Fabricius) (Lepidoptera:Crambidae), em função da aplicação de clorantraniliprole e localização da presa
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Data
2022-06-23
Autores
Fernandes, Rafael Machado
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Universidade Estadual Paulista (Unesp)
Resumo
O controle biológico é uma forma natural de combater os insetos-praga que estão no campo. No grupo dos chamados inimigos naturais, um dos mais expressivos é composto pelos predadores, com diversos representantes da Ordem Dermaptera (tesourinhas), com Euborellia annulipes (Lucas) (Dermaptera: Anisolabididade) sendo uma espécie considerada como potencial predador da broca-da-cana (Diatraea saccharalis), uma das pragas agrícolas de maior relevância e presente em grandes áreas de cana-de-açúcar no Brasil, particularmente no Estado de São Paulo, onde tem causado grandes perdas agrícolas e industriais. Além do método biológico para o controle dessa praga, os inseticidas também são bastante utilizados, com destaque para Altacor®, agroquímico com potencialidade de uso conjunto com o controle biológico. Foram utilizados colmos de cana tratados e não tratados com Altacor® e com infestações de lagartas da broca em várias alturas em relação ao solo (5, 10, 15, 20 e 25 cm) e liberadas fêmeas de E. annulipes, avaliando-se a capacidade de busca e de predação. Assim, o objetivo deste trabalho foi avaliar a capacidade de busca e predação de E. annulipes por lagartas de D. saccharalis em diferentes alturas no colmo da cana, bem como a interferência de Altacor® no comportamento predatório. Em função dos resultados obtido pode-se concluir que fêmeas de E. annulipes têm capacidade de busca em diferentes alturas do colmo de cana para predar lagartas de D. saccharalis, com o Altacor® afetando o comportamento de busca.
Biological control is a natural way to combat pest insects in the field. In the group of the so-called natural enemies, one of the most expressive is composed of predators, with several representatives of the order Dermaptera (scissors), with Euborellia annulipes (Lucas) (Dermaptera: Anisolabidia) being a species considered as a potential predator of the sugarcane borer (Diatraea saccharalis), one of the most relevant agricultural pests and present in large areas of sugarcane in Brazil, particularly in the state of São Paulo, where it has caused great agricultural and industrial losses. Besides the biological method for the control of this pest, insecticides are also widely used, especially Altacor®, an agrochemical with potential for use in conjunction with biological control. Sugarcane cane stalks treated and untreated with Altacor® and with caterpillar infestations of the borer at various heights above ground (5, 10, 15, 20 and 25 cm) were used and E. annulipes females released, evaluating their ability to search and predation. Thus, the objective of this study was to evaluate the capacity of search and predation of E. annulipes by D. saccharalis caterpillars at different heights on the sugarcane cane stalk, as well as the interference of Altacor® on the predatory behavior. Based on the results obtained it can be concluded that females of E. annulipes have the ability to search at different heights of the sugarcane stalk to prey on D. saccharalis caterpillars, with Altacor® affecting the search behavior.
Biological control is a natural way to combat pest insects in the field. In the group of the so-called natural enemies, one of the most expressive is composed of predators, with several representatives of the order Dermaptera (scissors), with Euborellia annulipes (Lucas) (Dermaptera: Anisolabidia) being a species considered as a potential predator of the sugarcane borer (Diatraea saccharalis), one of the most relevant agricultural pests and present in large areas of sugarcane in Brazil, particularly in the state of São Paulo, where it has caused great agricultural and industrial losses. Besides the biological method for the control of this pest, insecticides are also widely used, especially Altacor®, an agrochemical with potential for use in conjunction with biological control. Sugarcane cane stalks treated and untreated with Altacor® and with caterpillar infestations of the borer at various heights above ground (5, 10, 15, 20 and 25 cm) were used and E. annulipes females released, evaluating their ability to search and predation. Thus, the objective of this study was to evaluate the capacity of search and predation of E. annulipes by D. saccharalis caterpillars at different heights on the sugarcane cane stalk, as well as the interference of Altacor® on the predatory behavior. Based on the results obtained it can be concluded that females of E. annulipes have the ability to search at different heights of the sugarcane stalk to prey on D. saccharalis caterpillars, with Altacor® affecting the search behavior.
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Cana-de-açúcar, Pragas, Inseticidas, Predação (Biologia)