Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae)
ABSTRACT This work aims to evaluate the toxicity of insecticides used for stink bug control to the egg parasitoids Telenomus podisi and Trissolcus teretis. We tested ethiprole and sulfoxaflor + lambda-cyhalothrin in comparison with thiamethoxam + lambda-cyhalothrin and chlorpyrifos. Three independen...
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| Language: | English |
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Sociedade Brasileira de Entomologia
2022-10-01
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| Series: | Revista Brasileira de Entomologia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262022000300206&tlng=en |
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| author | Débora Mello Silva Geraldo Andrade Carvalho Wellington Ribeiro Souza Adeney de Freitas Bueno |
| author_facet | Débora Mello Silva Geraldo Andrade Carvalho Wellington Ribeiro Souza Adeney de Freitas Bueno |
| author_sort | Débora Mello Silva |
| collection | DOAJ |
| description | ABSTRACT This work aims to evaluate the toxicity of insecticides used for stink bug control to the egg parasitoids Telenomus podisi and Trissolcus teretis. We tested ethiprole and sulfoxaflor + lambda-cyhalothrin in comparison with thiamethoxam + lambda-cyhalothrin and chlorpyrifos. Three independent bioassays were conducted in the laboratory and repeated for each parasitoid species, to evaluate the effect of insecticides on pupal and adult stages of the parasitoids and the effects of insecticide sprays on host eggs prior to parasitism. Ethiprole at concentrations of 100 and 133.3 g/100 L H2O was classified as harmless (class 1), according to the International Organization of Biological Control to both pupae and adults of T. podisi. When tested against T. teretis, ethiprole was classified as harmless (class 1) and slightly harmful (class 2), but it still was the most selective pesticide among the studied chemicals. When adult parasitoids of both species were exposed to sprayed host eggs, parasitism rates were similar. The other treatments triggered more severe negative side effects to the parasitoids, especially to adults. Overall, ethiprole was the least toxic compound among the studied products and should be preferred in integrated pest management aimed at preserving these biocontrol agents, while the other tested insecticides should be evaluated under semi-field and field conditions to verify their higher toxicity. |
| first_indexed | 2024-04-12T16:19:59Z |
| format | Article |
| id | doaj.art-6a9c9b6e56a64583a4bee81c8755b9b8 |
| institution | Directory Open Access Journal |
| issn | 1806-9665 |
| language | English |
| last_indexed | 2024-04-12T16:19:59Z |
| publishDate | 2022-10-01 |
| publisher | Sociedade Brasileira de Entomologia |
| record_format | Article |
| series | Revista Brasileira de Entomologia |
| spelling | doaj.art-6a9c9b6e56a64583a4bee81c8755b9b82022-12-22T03:25:36ZengSociedade Brasileira de EntomologiaRevista Brasileira de Entomologia1806-96652022-10-0166310.1590/1806-9665-rbent-2022-0035Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae)Débora Mello SilvaGeraldo Andrade Carvalhohttps://orcid.org/0000-0002-8379-8008Wellington Ribeiro SouzaAdeney de Freitas Buenohttps://orcid.org/0000-0002-5462-5845ABSTRACT This work aims to evaluate the toxicity of insecticides used for stink bug control to the egg parasitoids Telenomus podisi and Trissolcus teretis. We tested ethiprole and sulfoxaflor + lambda-cyhalothrin in comparison with thiamethoxam + lambda-cyhalothrin and chlorpyrifos. Three independent bioassays were conducted in the laboratory and repeated for each parasitoid species, to evaluate the effect of insecticides on pupal and adult stages of the parasitoids and the effects of insecticide sprays on host eggs prior to parasitism. Ethiprole at concentrations of 100 and 133.3 g/100 L H2O was classified as harmless (class 1), according to the International Organization of Biological Control to both pupae and adults of T. podisi. When tested against T. teretis, ethiprole was classified as harmless (class 1) and slightly harmful (class 2), but it still was the most selective pesticide among the studied chemicals. When adult parasitoids of both species were exposed to sprayed host eggs, parasitism rates were similar. The other treatments triggered more severe negative side effects to the parasitoids, especially to adults. Overall, ethiprole was the least toxic compound among the studied products and should be preferred in integrated pest management aimed at preserving these biocontrol agents, while the other tested insecticides should be evaluated under semi-field and field conditions to verify their higher toxicity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262022000300206&tlng=enGlycine maxEgg parasitoidsPesticidesBiological controlSide effects |
| spellingShingle | Débora Mello Silva Geraldo Andrade Carvalho Wellington Ribeiro Souza Adeney de Freitas Bueno Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) Revista Brasileira de Entomologia Glycine max Egg parasitoids Pesticides Biological control Side effects |
| title | Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) |
| title_full | Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) |
| title_fullStr | Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) |
| title_full_unstemmed | Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) |
| title_short | Toxicity of insecticides to the egg parasitoids Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae) |
| title_sort | toxicity of insecticides to the egg parasitoids telenomus podisi and trissolcus teretis hymenoptera scelionidae |
| topic | Glycine max Egg parasitoids Pesticides Biological control Side effects |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262022000300206&tlng=en |
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