Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae
Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is an important insect pest causing serious losses to tomato plantations in Brazil. Some populations of T. absolute are reported to present insecticide resistance resulting in its control failure and the use of alternative control based on silicon,...
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| Format: | Article |
| Language: | English |
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University of Modena and Reggio Emilia
2015-05-01
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| Series: | Invertebrate Survival Journal |
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| Online Access: | http://www.isj.unimo.it/articoli/ISJ376.pdf |
| _version_ | 1818544319770918912 |
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| author | MC dos Santos AM Resende Junqueira VG Mendes de Sá JC Zanúncio JE Serrão |
| author_facet | MC dos Santos AM Resende Junqueira VG Mendes de Sá JC Zanúncio JE Serrão |
| author_sort | MC dos Santos |
| collection | DOAJ |
| description | Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is an important insect pest causing serious losses to tomato plantations in Brazil. Some populations of T. absolute are reported to present insecticide resistance resulting in its control failure and the use of alternative control based on silicon, which is clean and sustainable, can reduce pesticide use, increasing fruit quality and protecting the environment. This study evaluated changes in the morphology of the midgut and the mandibles of T. absoluta larvae caused by feeding with compounds containing silicon. Larvae of T. absoluta were fed on tomato leaves with different compounds containing silicon and the histology of the midgut of fourth instar larvae was analyzed. The mandibles of all larval stages were dissected and analysed by scanning electron microscopy. There were no changes in the morphology of the mandibles of the larvae of T. absoluta fed on silicon compared to the control group. Larvae of T. absoluta from the control group and the treatments where the calcium silicate was applied to the soil had not differences in the morphology of the midgut epithelial cells, which had four cell types: digestive, goblet, regenerative and mycetocyte cells. In larvae of T. absoluta obtained from silicon-based treatments applied to the leaves, the midgut epithelium showed detachment of the basal membrane, which can characterize the possible effect of this toxic element to larvae of T. absoluta. |
| first_indexed | 2024-12-11T22:46:57Z |
| format | Article |
| id | doaj.art-e18282b2d7d443738ac85a9de5b7b18f |
| institution | Directory Open Access Journal |
| issn | 1824-307X |
| language | English |
| last_indexed | 2024-12-11T22:46:57Z |
| publishDate | 2015-05-01 |
| publisher | University of Modena and Reggio Emilia |
| record_format | Article |
| series | Invertebrate Survival Journal |
| spelling | doaj.art-e18282b2d7d443738ac85a9de5b7b18f2022-12-22T00:47:34ZengUniversity of Modena and Reggio EmiliaInvertebrate Survival Journal1824-307X2015-05-0112158165Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvaeMC dos Santos0AM Resende Junqueira1VG Mendes de Sá2JC Zanúncio3JE Serrão4Faculty of Agronomy and Veterinary Sciences, University of Brasilia, 70910-970, Brasília, Distrito Federal, BrazilFaculty of Agronomy and Veterinary Sciences, University of Brasilia, 70910-970, Brasília, Distrito Federal, BrazilFaculty of Engineering, University of the State of Minas Gerais, 35930-314, João Monlevade, Minas Gerais State, BrazilDepartment of Entomology, Federal University of Viçosa, 36.570-000, Viçosa, Minas Gerais State, BrazilDepartment of General Biology, Federal University of Viçosa, 36.570-000, Viçosa, Minas Gerais State, BrazilTuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is an important insect pest causing serious losses to tomato plantations in Brazil. Some populations of T. absolute are reported to present insecticide resistance resulting in its control failure and the use of alternative control based on silicon, which is clean and sustainable, can reduce pesticide use, increasing fruit quality and protecting the environment. This study evaluated changes in the morphology of the midgut and the mandibles of T. absoluta larvae caused by feeding with compounds containing silicon. Larvae of T. absoluta were fed on tomato leaves with different compounds containing silicon and the histology of the midgut of fourth instar larvae was analyzed. The mandibles of all larval stages were dissected and analysed by scanning electron microscopy. There were no changes in the morphology of the mandibles of the larvae of T. absoluta fed on silicon compared to the control group. Larvae of T. absoluta from the control group and the treatments where the calcium silicate was applied to the soil had not differences in the morphology of the midgut epithelial cells, which had four cell types: digestive, goblet, regenerative and mycetocyte cells. In larvae of T. absoluta obtained from silicon-based treatments applied to the leaves, the midgut epithelium showed detachment of the basal membrane, which can characterize the possible effect of this toxic element to larvae of T. absoluta.http://www.isj.unimo.it/articoli/ISJ376.pdfLycopersicon esculetum; fertilization; morphology; pest control |
| spellingShingle | MC dos Santos AM Resende Junqueira VG Mendes de Sá JC Zanúncio JE Serrão Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae Invertebrate Survival Journal Lycopersicon esculetum; fertilization; morphology; pest control |
| title | Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae |
| title_full | Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae |
| title_fullStr | Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae |
| title_full_unstemmed | Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae |
| title_short | Effect of silicon on the morphology of the midgut and mandible of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) larvae |
| title_sort | effect of silicon on the morphology of the midgut and mandible of tomato leafminer tuta absoluta lepidoptera gelechiidae larvae |
| topic | Lycopersicon esculetum; fertilization; morphology; pest control |
| url | http://www.isj.unimo.it/articoli/ISJ376.pdf |
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