Articles
Potential of natural regulation of the tomato leafminer by its parasitoids in Senegal
Article number
1378_34
Pages
261 – 266
Language
English
Abstract
The detection of the tomato leafminer in West Africa has prompted research into the control of this insect.
The management of the pest by using its natural enemies appeared to be the most promising approach for effective control.
The objective of this study was to evaluate the potential of T. absoluta regulation by its parasitoids.
Populations of the leafminer were monitored on 25 tomato plots during three seasons from March 2018 to June 2019, in the Niayes area.
The larvae collected were monitored in the laboratory until the possible emergence of parasitoids.
Five species of parasitoids were obtained.
These were Chelonus sp., Apanteles litae, Cotesia vestalis and Meteorus laphygmarum of the family Braconidae and Diadegma insulare of the family Ichneumonidae. Seventeen larvae were parasitized out of the 858 larvae collected. Chelonus sp. species was the most abundant with a percentage of 58.8%. Larval parasitism was very low (2.5%). Diadegma insulare and Cotesia vestalis were recorded for the first time on the pest T. absoluta in Senegal.
These results allowed to evaluate the potential of natural regulation of T. absoluta by its parasitoids.
The management of the pest by using its natural enemies appeared to be the most promising approach for effective control.
The objective of this study was to evaluate the potential of T. absoluta regulation by its parasitoids.
Populations of the leafminer were monitored on 25 tomato plots during three seasons from March 2018 to June 2019, in the Niayes area.
The larvae collected were monitored in the laboratory until the possible emergence of parasitoids.
Five species of parasitoids were obtained.
These were Chelonus sp., Apanteles litae, Cotesia vestalis and Meteorus laphygmarum of the family Braconidae and Diadegma insulare of the family Ichneumonidae. Seventeen larvae were parasitized out of the 858 larvae collected. Chelonus sp. species was the most abundant with a percentage of 58.8%. Larval parasitism was very low (2.5%). Diadegma insulare and Cotesia vestalis were recorded for the first time on the pest T. absoluta in Senegal.
These results allowed to evaluate the potential of natural regulation of T. absoluta by its parasitoids.
Authors
O. Seydi, E.S. Sylla, M. Diatte, B. Labou, E. Tendeng, S.O. Sène, A. Baldé, P. Diop, I.A. Ndiaye, K. Diarra
Keywords
Tuta absoluta, biological control, parasitoid, invasive insect, tomato, West Africa
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