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Master Thesis

Étude de la régulation de la mineuse du café Leucoptera coffeella (Guérin-Méneville, 1842) sur des parcelles de café martiniquaises par des auxiliaires parasitoïdes

Abstract : The coffee miner, Leucoptera coffeella (Guérin-Méneville, Perrottet, 1842) is one of the main pests of coffee plots in the Neotropical zone. The caterpillars mine the mesophyll of the leaves, resulting in considerable yield losses. Since 2015 new plantations of Typica coffee have been cultivated in Martinique and leafminer has been reported since 2018. Parasitoids auxiliaries exist and are mentioned in the West Indies and South America but no studies have been conducted on the island. It is in this context that a study of the interactions between plot infestation and parasitism rates of associated parasitoids is being conducted within the different plots of the island. A total of 6 morphotypes of parasitoid wasps of two families, Eulophidae and Braconidae, are listed on the plots, including the genus highly studied for the control of the leafminer, Mirax sp. The results of the tests carried out do not explain the infestation rate of the plots but highlight the complexity of the interactions with parameters such as parasite communities, environment or associated crops. The objective is to propose a strategy for protecting coffee plantations by using the identified Braconidae species and recommending a set of actions to be implemented in order to regulate the populations of the pest.
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Master Thesis
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Camille Bortoli. Étude de la régulation de la mineuse du café Leucoptera coffeella (Guérin-Méneville, 1842) sur des parcelles de café martiniquaises par des auxiliaires parasitoïdes. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02395895⟩

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