Articles
Influence of host plants on the efficacy of tomato fruitworm parasitoids
Article number
1348_26
Pages
189 – 196
Language
English
Abstract
The tomato fruitworm, Helicoverpa armigera, seriously limits the production of Solanaceae in the Niayes of Senegal.
However, it presents an important parasitic procession.
The objective of this study is to evaluate the effect of two host plants on the efficacy of the parasitoids of the tomato fruitworm.
Two speculations (potato and tomato) were prospected in the dry season for two consecutive years in the localities of Cayar and Mboro.
The caterpillars were taken from 50 plants per plot of each speculation and reared individually in the laboratory.
The rate of infestation of potato plants by the pest Helicoverpa armigera is much higher than the rate of infestation of tomato plants.
Four species of parasitoids were identified in the potato plots including three in the tomato plots.
The natural regulation of the pest is mainly ensured by Tachinaria in potato plots and by Meteorus laphygmarum in tomato plots.
For the parasitism of the two speculations combined, the species Meteorus laphygmarum is more efficient, followed by Tachinaria, Cotesia vestalis and Diadromus sp.
The potato attracts more species of parasitoids than the tomato.
However, it presents an important parasitic procession.
The objective of this study is to evaluate the effect of two host plants on the efficacy of the parasitoids of the tomato fruitworm.
Two speculations (potato and tomato) were prospected in the dry season for two consecutive years in the localities of Cayar and Mboro.
The caterpillars were taken from 50 plants per plot of each speculation and reared individually in the laboratory.
The rate of infestation of potato plants by the pest Helicoverpa armigera is much higher than the rate of infestation of tomato plants.
Four species of parasitoids were identified in the potato plots including three in the tomato plots.
The natural regulation of the pest is mainly ensured by Tachinaria in potato plots and by Meteorus laphygmarum in tomato plots.
For the parasitism of the two speculations combined, the species Meteorus laphygmarum is more efficient, followed by Tachinaria, Cotesia vestalis and Diadromus sp.
The potato attracts more species of parasitoids than the tomato.
Publication
Authors
S.O. Sene, M. Diatte, B. Labou, E. Tendeng, S. Sylla, P. Diop, O. Seydi, A. Baldé, I.A. Ndiaye, K. Diarra
Keywords
Helicoverpa armigera, host plant, integrated pest management, biological control, natural enemies, Senegal
Groups involved
- Division Plant Genetic Resources, Breeding and Biotechnology
- Division Tropical and Subtropical Fruit and Nuts
- Division Temperate Tree Fruits
- Division Temperate Tree Nuts
- Division Vine and Berry Fruits
- Division Ornamental Plants
- Division Vegetables, Roots and Tubers
- Division Plant-Environment Interactions in Field Systems
- Division Greenhouse and Indoor Production Horticulture
- Division Postharvest and Quality Assurance
- Division Precision Horticulture and Engineering
- Division Horticulture for Human Health
- Division Horticulture for Development
- Division Landscape and Urban Horticulture
- Commission Banana
- Commission Cultivar Registration
- Commission Agroecology and Organic Farming Systems
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