Population parameters of Tuta absoluta (Lepidoptera: Gelechiidae) and associated losses in greenhouse tomato
Introduction: The tomato leafminer, Tuta absoluta (Meyrick), the most threatening pest for tomato, Solanum lycopersicum L., production worldwide, may cause total losses, and is difficult to control. Thus, understanding its populations dynamic in the crop is a priority to mitigate damage. Objective:...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | Costa Rica |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/40898 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/40898 |
| Access Level: | acceso abierto |
| Palabra clave: | damage index tomato leafminer tomato moth Integrated Pest Management exponential growth Índice de daño minador del tomate polilla del tomate Manejo Integrado de Plagas crecimiento exponencial |
| Sumario: | Introduction: The tomato leafminer, Tuta absoluta (Meyrick), the most threatening pest for tomato, Solanum lycopersicum L., production worldwide, may cause total losses, and is difficult to control. Thus, understanding its populations dynamic in the crop is a priority to mitigate damage. Objective: Herein, population parameters of T. absoluta were evaluated in tomato var. Sonero in the greenhouse, in three management systems (commercial, maximum population and total control). Methods: during 25 weeks in La Union, Antioquia, Colombia, mathematical models were applied to describe the populations of larvae and adults (males) in time, as related to production parameters and associated losses. Results: The intrinsic growth rate was 0.447 larvae per week. The Gaussian and exponential models described best the population over time. The losses were associated with weight and number of marketable fruits, and with total production weight, and number of clusters and total fruits. Conclusion: T. absoluta larvae have growth exponentially in a ventilated greenhouse, with a smaller intrinsic growth rate than that calculated by life tables in the laboratory. |
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