Publications Scientifiques

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    Survey of American foulbrood in honey bee colonies Apis mellifera intermissa in mid- northen region of Algeria (2010-2011)
    (2012) Adjlane, Noureddine; Bounar-Kechih, Saliha; Jammal haddad, Nizar
    American foulbrood caused by Paenibacillus larvae is one of the most serious bacterial diseases of honey- bee brood. Few data are currently available on the prevalence of this disease in Algeria. This study pro- vides an overview of the prevalence of this disease in the Mid-North. Samples of adult bees were collected from 65 apiaries. Detection of spore samples was performed using methods bacteriological, microscopic and biochemical. Spores of Paenibacillus larvae were detected in 23.5 % of the apiaries examined in 2010 and 30 % in 2011. The prevalence of the wreck is different from one region to another. Many factors can possibly explain this difference in the prevalence of the disease.
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    Detection of deformed wing virus in the local bee colonies apis mellifera intermissa in algeria and its relationship with varroa destructor
    (2014) Adjlane, Noureddine; Jamal Haddad, Nizar
    Honeybees are threatened by over 18 viruses, nowadays deformed wing virus (DWV) is known to be one of the most prevalent virus worldwide.. This is the first study in Algeria and most North Africa region which is evaluating the prevalence of the DWV in beehives. The objective of this study is to eva-luate the impact of this virus on honey bees mortality, and its relationship to infestation with the Varroa destrutor parasitic mite. We conducted this study on an apiary located in the central region of Algeria. PCR results showed the presence of DWV in Apis mellifera intermissa honey bee colonies, where 42% of the samples are infected with the virus. We highlighted the role of V. destructor and its association with the DWV and the mortality recorded in the same apiary
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    Distribution and variability of deformed wing virusof honeybees (Apis mellifera) in the Middle East and NorthAfrica
    (wiley, 2015) Jamal Haddad, Nizar; Adjlane, Noureddine; Al-Shagour, Banan; Loucif-Ayad, Wahida; El-Niweiri, Mogbel A. A.; Anaswah, Eman; Abu Hammour, Wafaa; El-Obeid, Dany; Albaba, Imad; Shebl, Mohamed; Abdulhusien, Sehen Almaleky; Nasher, Abdullah; Nagara, Walid; Bergigui, Mohamed Fouad; Ya ̃nez, Orlando; de Miranda, Joachim R.
    Three hundred and eleven honeybee samples from 12 countries in the Mid-dle East and North Africa (MENA) (Jordan, Lebanon, Syria, Iraq, Egypt, Libya, Tunisia,Algeria, Morocco, Yemen, Palestine, and Sudan) were analyzed for the presence of de-formed wing virus (DWV). The prevalence of DWV throughout the MENA region waspervasive, but variable. The highest prevalence was found in Lebanon and Syria, withprevalence dropping in Palestine, Jordan, and Egypt before increasing slightly movingwestwards to Algeria and Morocco Phylogenetic analysis of a 194 nucleotide section ofthe DWV Lp gene did not identify any significant phylogenetic resolution among thesamples, although the sequences did show consistent regional clustering, including an in-teresting geographic gradient from Morocco through North Africa to Jordan and Syria. Thesequences revealed several clear variability hotspots in the deduced amino acid sequence,which furthermore showed some patterns of regional identity. Furthermore, the sequencevariants from the Middle East and North Africa appear more numerous and diverse thanthose from Europe