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Articles by Zahidi AbdelAziz
Total Records ( 2 ) for Zahidi AbdelAziz
  Hallouti Ayoub , Zahidi Abdelaziz , Lamharchi El Hassane , Boubaker Hassan , El Mousadik Abdelhamid and Ait Benaoumar Abdellah
  Background and Objective: Ceratitis capitata is considered as one of the most economically destructive pest. Several alternatives have been used but efficacy remains limited. The objective consists in the search for other natural enemies such as parasitoids and evaluate parasitism rate of larval stages from infested fruits by medfly collected in argane forest. Materials and Methods: About 400 fly larvae per sample and per locality were isolated and placed in breeding boxes at optimal temperature until the emergence of adults. Number of Ceratitis adults and parasitism rate have been observed. Morphological and molecular identification using COI-F/COI-R primers of collected parasitoids were also occurred. Results: Morphological and molecular analyses confirmed the occurrence of a new haplotype of the larval parasitoid belonging to Psyttalia genus in argane forest. In addition, phylogenetic analyses revealed that these specimens were 92% (E-value = 2e-85) identical to Psyttalia lounsburyi. The presence of this parasitoid was noted in all studied localities with a variable parasitism rate which reached a value of 21.5% in the localities where agricultural activities are present. Conclusion: It can be concluded that this natural parasitoid could be native to argane forest and will be used as biological control agent against Ceratitis capitata and Bactrocera oleae in Morocco. Also in Mediterranean region which constitute a handicap to the extension of biological agriculture of fruit trees.
  Lamharchi El Hassane , Zahidi AbdelAziz , Hallouti Ayoub , Akchour Abdellah , El Finti aissam , Boubaker Hassan and El Mousadik Abdelhamid
  Background and Objective: The California Red Scale (CRS) is a serious pest of citrus in many parts of the world. Different control methods have been adopted, but their effectiveness remains limited. The objective was to isolate fungi from the CRS corpses and determine the efficacy of two isolated strains, Aspergilllus flavus and Fusarium oxysporum against different CRS developmental stages. Materials and Methods: Fungal isolates obtained from RSC corpses were identified by studying their macroscopic and microscopic aspects. Mycelial biomass was used for genomic DNA extraction according to kit protocol. Polymerase Chain Reaction (PCR) with specific primers on a partial sequence was used for each fungal isolate. Each PCR product was sequenced in the forward and reverse directions using an Applied Biosystem ABI 3130×l sequencer. Results: The result of the study informs that most isolated strains belonged to five genera of Aspergillus, Alternaria, Fusarium, Rhizopus and Cladosporium. At concentration of 106 conidia mL1, pre-nymph male and adult male under shield showed greater mortality ranging from 84.02-93%, but for female stages, this rate did not exceed 58%. Adult males, male pre-pupae and mobile larvae (68.3-100%) are more affected by Fusarium than Aspergillus strain. Conclusion: It can be concluded that the two entomopathogenic fungi tested can be considered as good candidates for biological control of California Red Scale (CRS). Therefore, they will be used as microbial agents in Integrated Pest Management (IPM) strategies.
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