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Université de Cordoba (2019)

Evaluación del potencial de los microesclerocios producidos por el hongo entomopatógeno Metarhizium Alomari brunneum (Hypocreales : Clavicipitaceae) para el control de la mosca del olivo Bactrocera oleae Rossi (Diptera : Tephritidae).

Hashem Yahia Nawaf

Titre : Evaluación del potencial de los microesclerocios producidos por el hongo entomopatógeno Metarhizium Alomari brunneum (Hypocreales : Clavicipitaceae) para el control de la mosca del olivo Bactrocera oleae Rossi (Diptera : Tephritidae).

Auteur : Hashem Yahia Nawaf

Université de soutenance : Université de Cordoba

Le programme du Master est organisé conjointement par Universidad de Córdoba (UCO), Consejería de Agricultura, Pesca y Medio Ambiente de la Junta de Andalucía (CAP), Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centre International de Hautes Etudes Agronomiques Méditerranéennes (CIHEAM) à travers l’Institut Agronomique Méditerranéen de Zaragoza (IAMZ), Consejo Superior de Investigaciones Científicas (CSIC) et Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)

Grade : Master Universitaire en Oliviculture et Oléotechnie 2019

Résumé en Espagnol – Anglais
After more than 60 years of repeated and continuous applications of chemical insecticides for olive fruit fly control, this monophagous species is still representing the greatest biotic threat to the crop reducing the olive oil production and quality. Nowadays, there is increasing concern over dependence on chemical pesticides for olive fly Bactrocera oleae Rossi control, and a global trend to find new methods for its management. The progress of olive fly control programs achieved in recent years consisted of exploit bioinsecticides, with emphasis in those developed with base in entomopathogenic organisms, particularly entomopathogenic fungi. We previously developed a biological, efficient, economically viable, and environmentally friendly method to control the olive fruit fly using the EAMa 01/58-Su strain of the entomopathogenic fungus Metarhizium brunneum Petch. as a soil treatment targeting thirdinstar B. oleae larvae that leave the olive fruit to pupate in the soil from mid-autumn onwards. For more than five seasons, a 50–70% reduction of adult olive fruit fly populations was observed in the treated plots compared with the untreated ones both in the North and South of Spain. Furthermore, the food and environmental safety of the method was also previously demonstrated. We should point out that all the previous investigations were performed using the EAMa 01/58-Su conidia. However, the main objective of the present work was to evaluate the efficacy of EAMa 01/58-Su Microsclerotia (MS) to control B. oleae. Many Metarhizium species, including EAMa 01/58-Su of M. brunneum, have the capacity to produce MS. This study explores the effects of abiotic factors, moisture, temperature and UV-B, on the experimental preparations of M. brunneum strain EAMa 01/58-Su consisting of granule formulations made using in vitro produced MS, which are intended to produce infective conidial spores after soil application to control olive fruit fly. In addition, to assessing the efficacy of this MS for B. oleae control under both laboratory and field conditions. The final purpose of this study was to identify the possible secondary positive effects of

Source : Master of Oliviculture et Oleotechnie

Page publiée le 25 février 2021