Insecticide toxicity to the borer Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae): developmental and egg-laying effects
| Autor: | J E Serrão, D. O. Ferreira, Júlio Cláudio Martins, Ricardo Siqueira da Silva, J R S Soares, Marcelo Coutinho Picanço, Andreia Costa, L P Arcanjo |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Insecticides Ovicidal activity Oviposition Methomyl Solanum 01 natural sciences Insect Control Toxicology chemistry.chemical_compound Crambidae Thiocarbamates parasitic diseases Nitriles Oxazines Pyrethrins Animals ortho-Aminobenzoates Sulfones Lufenuron Insecticide effects Neoleucinodes elegantalis Cartap Ovum biology Indoxacarb fungi Solanaceae pest biology.organism_classification Small tomato borer Juvenile Hormones Lepidoptera 010602 entomology Deltamethrin Hydrazines chemistry Insect Science Larva Benzamides Female PEST analysis Insect eggshell 010606 plant biology & botany |
| Zdroj: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV |
| ISSN: | 1678-8052 |
| Popis: | Neoleucinodes elegantalis (Guenee) (Lepidoptera: Crambidae) is one of the major pests of solanaceous plants in South America. It is considered a great threat by the European and Mediterranean Plant Protection Organization due to the serious economic damage that it causes on tomato farms; therefore, controlling this pest is a challenging task in South America. Controlling N. elegantalis at the egg stage is the best way to prevent it from damaging crops; however, thorough studies about the effectiveness of chemicals on the different life stages of this insect pest are lacking. In this study, the effects of different chemical classes were evaluated on N. elegantalis adults, female oviposition behavior, larvae, eggs, and embryonic development. None of the tested insecticides demonstrated toxicity to the adults; however, the results showed that cartap hydrochloride affects oviposition behavior. Moreover, methomyl and cartap hydrochloride exhibited high toxicity against the eggs and larvae, with higher than 80% of mortality. These insecticides interrupted larval hatching and caused alterations in the chorion layer. Flubendiamide and deltamethrin demonstrated toxicity on N. elegantalis larvae; however, lufenuron, indoxacarb, methoxyfenozide, and chlorantraniliprole demonstrated low toxicity on both eggs and larvae, with lower than 70% of mortality. Fruit treated with cartap hydrochloride had a deterrent effect. The ovicidal activity revealed by methomyl and cartap hydrochloride might provide new approaches regarding insecticide effects on eggs. Methomyl, cartap hydrochloride, flubendiamide, and deltamethrin demonstrated toxicity on larvae. The evaluation of the chorion of the eggshell in this study has clarified the toxic effect of methomyl and cartap hydrochloride on eggs. |
| Databáze: | OpenAIRE |
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