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Evaluation of an ＂Attract and Kill＂ System to Combat Ceratitis capitata on Peach Trees in Tunisia

Journal of Agricultural Science and Technology(A) 2014年第7期4卷 612-619页

作者： Bouagga Sarra Hassan Nayem kamel ben halima monia Jammazi Adel Djelouah Khaled Al-Zaidi Skaker Department of Plant Protection Mediterranean Agronomic Institute MAI Bari Via Ceglie 9 70010 Valenzano Bari Italy Russell IPM Ltd. Unit 45 First Avenue Deeside Industrial Park Deeside CH5 2NU United Kingdom Higher Agronomic Institute of Chott Mariem Sousse 4042 Tunisia Department of Entomology Ministry of Agricultural General Direction of Plant Protection and Control of Food Quality Tunis1002 Tunisia

Attract and kill （AK） technology was evaluated against the Mediterranean fruit fly （Med-fly）, Ceratitis capitata W.. Treatment was carried out in two peach orchards of four hectares each; first one located in Borj-Touil and the second in El-Kssibi Mornag, Northern Tunisia during the 2012 field season. AK is a specialized system based on hydrolyzed proteins and alpha-cypermethrin. During this study, 400 AK bait stations were placed in every hectare, four weeks before fruits color changes. The tested AK system was found effective in reducing the number of C. capitata population to 70% comparing to the untreated orchards. Fruit damages assessment showed significant differences between treatments in respect of decreasing infestation onto fruits Study results indicated that AK baited treatments were able to reduce dropped and soften fruits infestation seven times than that of control plots. Fruit damages were restricted to 4%-5% in treated areas with AK system in compare to 31%-35% recorded in control plots. This novel AK system showed good performance to combat Med-fly and can successfully used to combat various fruit fly species when applied for an area wide application program.

关键词： Ceratitis capitata AK system peach fruit damages Tunisia.

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Two mitochondrial haplotypes in Pterochloroides persicae （Hemiptera： Aphididae： Lachninae） associated with different feeding sites

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Insect Science 2013年第5期20卷 637-642页

作者： Mdellel Lassaad David Martinez-Torres ben halima kamel monia Hight Institute of Agronomy Chott Mariem 4042 Sousse Tunisia Institut Cavanilles de Biodiversitat i Biologia Evolutiva Universitat de Valencia Apdo. Correos 22085 46071 Valencia Spain

Pterochloroides persicae （Cholodkovsky） is an aphid species belonging to the subfamily Lachninae that uses different members of Rosaceae （specially Prunus spp.） as hosts. Partial sequences from the mitochondrial cytochrome c oxidase 1 （COI） and the nuclear long-wave opsin genes were obtained for approximately 100 P. persicae aphid individuals sampled from 34 colonies collected mainly in Tunisia and other Mediterranean locations. The variability found at the mitochondrial locus revealed the presence of two maternal haplotypes in the studied area that differed in a single nucleotide. The nuclear gene analyzed, however, failed to reveal any variability in this species. The variability found at the COI locus was related to the season of aphid sampling and with the site of feeding, with haplotype I mostly detected in samples collected in spring and summer on trunks and branches and haplotype II only detected in aphids collected in autumn on roots. The observed pattern of molecular variation suggests the presence of two clonal races of P. persicae coexisting in the studied area differentially adapted to conditions prevalent in the alternative seasons and/or to different feeding sites.

关键词： aphids COI Lachninae life cycle Pterochloroides variability

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Physiological, histopathological and cellular immune effects of Pergularia tomentosa extract on Locusta migratoria nymphs

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Journal of Integrative Agriculture 2019年第12期18卷 2823-2834页

作者： Meriam Miladi Khemais Abdellaoui Amel ben Hamouda Iteb Boughattas Mouna Mhafdhi Fatma Acheuk monia ben halima-kamel Higher Agronomic Institute of Chott Mariem Sousse UniversityChott Mariem 4042Tunisia General Directorate of Plant Health and Agricultural Inputs Control Ministry of AgricultureTunis 1002Tunisia Laboratory of Valorization and Conservation of Biological Resources Department of BiologyFaculty of SciencesUniversity of BoumerdesBoumerdes 35000Algeria

The migratory locust Locusta migratoria(Orthoptera,Acrididae)is one of the most important pests due to its extensive and severe damage to crops in large parts of Africa and *** and ecologically natural products such as bota nical insecticides are emergi ng can didates for replaceme nt of usually applied chemical *** crude methanolic extract of Pergularia tomentosa(PME)was investigated for their toxicity and physiological aspects on *** *** showed that treatment of newly emerged fourth and fifth instar nymphs resulted in significant mortality and significant repellent activity with an LC50 value of 0.18 and 0.38%,respectively,after seven days of *** PME toxicity was also dem on strated by histopathological cha nges in the alime ntary canal resulting in con siderable disorganization and severe damage of the caeca and proventriculus *** extract induced cellular immune reactions which manifested by a significant decrease in the number of the differential haemocyte counts(prohemocytes and plasmatocytes)and important cell *** of biochemical analyses showed that the PME reduced the activity of acetylcholinesterase and induced the glutathione *** neurotoxic effect was confirmed by the histological alterations in the brain structure,particularly in the neurosecretory cells showing typical signs of cell necrosis.

关键词： Locusta migratoria Pergularia tomentosa toxicity histopathology haemocytes enzymes

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