Browsing by Author "Adjlane, Noureddine"
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Item Evaluation of the resistance of the mite varroa destructor to the amitraz ın colonıes of honey bees (Apis mellifera) in Algerıa(Uludağ Üniversitesi, 2017-06-29) Adjlane, Noureddine; Haddad, NizarVarroa mite has become a major concern of beekeepers in Algeria since the discovery of the first cases of infestation in the year 1982. Amitraz is the predominant compound used in Algeria to control V. destructor, its constant application has caused the appearance of resistant mite populations to this product in several parts of the world. This study was conducted to detect the possible existence of populations of resistant mites to Amitraz in Algeria. To determine the mites mortality percentage to the Amitraz, they were exposed to a trips of 2.5 x 1.0 cm. Varroa mortality in apiaries treated with Amitraz was 39.23%, lower than the 87.40% mortality obtained in apiaries that only received an alternative treatment. A significant difference (P>0.05) was found between two mortality of Varroa. Our results indicate a possible occurrence of Varroa resistance to Amitraz. The introduction of integrated programs for resistance management is required.Item Survey of American foulbrood ın apıs mellıfera intermıssa colonıes in mid-northern region of Algeria(Uludağ Üniversitesi, 2012) Adjlane, Noureddine; Kechıh, Saliha; Doumandj, Salah-eddine; Haddad, NizarAmerican foulbrood caused by Paenibacillus larvae is one of the most serious bacterial diseases of honeybee brood. Few data are currently available on the prevalence of this disease in Algeria. This study provides 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.