Browsing by Author "Haddad, Nizar"
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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 Honey bee viruses, diseases and hive management in The Middle East and their relation to the colony collapse disorder and bee losses(Uludağ Üniversitesi, 2011) Haddad, NizarBeekeeping industry plays a pivotal role in the agricultural, food security, biodiversity and national economies, not only by giving varies hive products but most importantly is the high impact that the honeybees are making in the crops and wild flora pollination. Since the year 2007 most of the beekeepers around the world had face a very big colony losses and unusual incident of disappearance of the bees "CCD", this article is trying to spotlight some reasons behind both CCD and bee losses in the Middle East area. No clear correlation between a single reason and CCD was found, but several vectors did have a clear relationship with the bee losses in the Middle East area. It is clear that beekeepers suffered big bee losses over the last few years, and until now there is no clear and scientifically proven explanation to CCD.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.Item Utilization of forest bıodıversıty: Rewards of ceratonıa sılıqua l. For apıs mellifera(Uludağ Üniversitesi, 2012) Maha, Syouf; Haddad, NizarPlant community of Ceratonia siliqua L. at Wasfi Al-Tal forest reserve was investigated during 26 September to 23 December 2004 to asses the utilization of Ceratonia siliqua L (Carob) for Apis mellifera (Honey bee). Nectar production rate was measured by emptying flowers, covering them for 24 hours with nylon mesh bags, and then sampling their nectar contents. The Ceratonia siliqua L. plant showed good results regarding the nectar volume and concentration and there was good honey bee visitation for pollen and nectar. Male trees were higher than the female ones regarding nectar volume and concentration, the mean volume for male trees was 17.4ml±9.7sd whereas, for the female ones it was only 4.25ml±4.9sd. The mean volume for the nectar concentration for male trees was 63.97%± 10.19sd whereas, for the female ones it was only 29.25%±34 sd.