| Registro completo |
| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Effect of anonaceous extracts on Aphis gossypii (Glover, 1887) (Hemiptera: Aphididae) and selectivity to Eriopis connexa (Germar, 1824) (Coleoptera: Coccinellidae)
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| Autores: |
Santos, Lindinalva dos
Trindade, Roseane Cristina Prédes
Santos, Djison Silvestre dos
Dias, Mirandy dos Santos
Broglio, Sônia Maria Forti
Lemos, Eurico Eduardo Pinto de
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| Data: |
2018-05-15
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| Ano: |
2018
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| Palavras-chave: |
Aphids
Lethal concentrations
Ladybug
Annona squamosa
Annona muricata.
Controle biológico
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| Resumo: |
The effects of ethanolic and hexanic extracts of soursop and sugar apple (EES, EHS, EESA and EHSA, respectively) on Aphis gossypii (Hemiptera: Aphididae) and its natural enemy Eriopis connexa (Coleoptera: Coccinellidae) by contact exposure, residual effect and ingestion tests were evaluated. The estimated LC50 and LC99 values for A. gossypii were 0.39% and 5.47% for (EESA); 0.23% and 1.19% for (EES); 0.47% and 4.39% for (EHSA); and 0.42% and 6.38% for (EHS), respectively. Considering contact exposure, EES at 0.23% was innocuous, and EHS at 0.42% was slightly harmful; for adult ladybugs, only EESA (5.47%) was classified as slightly harmful, with the other treatments classified as harmless. The results were similar for the residual effect. For selectivity in ingestion tests, EES and EHS at the LC50 did not affect the survival rate of the predator, but EESA (0.39% and 5.47% for the LC50 and LC99, respectively) reduced the survival rate to zero in less than 7 days, resembling chemical treatment with Decis®. Extracts applied to the eggs of an alternative prey reduced the consumption of eggs and therefore the predatory capacity of the ladybug, which led to a decrease in oviposition, egg viability and ultimately a reduction in predator fecundity. EES at a concentration of 0.23% was effective in the control of A. gossypii and was selective and did not affect the survival rate of the its natural enemy E. connexa.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36267
10.4025/actasciagron.v40i1.36267
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| Editor: |
Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36267/pdf
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36267/751375145737
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; Vol 40 (2018): Publicação Contínua; e36267
Acta Scientiarum. Agronomy; v. 40 (2018): Publicação Contínua; e36267
1807-8621
1679-9275
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| Direitos: |
Copyright (c) 2018 Acta Scientiarum. Agronomy
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