Publications Internationales
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Item Results of the nationale survery on algerian beekeebing (breeding practices, health situation)(2024) Haider, Yamina; Adjlane, Noureddine; Haddad, NizarThe honey bee plays a crucial role in maintaining plant biodiversity and environmental equilibrium, making beekeeping a vital activity in Algeria. However, the proliferation of Varroa ectoparasitic mites, causing varroasis, poses a significant threat to beekeeping in the region. This study, conducted between March and July 2022, aimed to comprehensively characterize the state of beekeeping in Algeria and identify its primary challenges. The survey was disseminated via email to beekeeping associations and individual beekeepers, with responses from 100 participants subjected to analysis, most of the respondents 97%, are men. 66% of the respondents practice sedentary and 34% transhumance. The findings shed light on the impediments to beekeeping development in recent years, including factors such as drought, elevated mortality rates, and the prevalence of bee pathologies. Notably, a significant portion of beekeepers refrains from conducting mortality analyses. The survey also revealed a substantial decline in honey production compared to previous years. However, positive aspects emerged, such as the presence of beekeepers employing sound beekeeping practices, including frame renewal, colony protection against adverse weather conditions, and the practice of transhumance. Furthermore, periodic varroasis screening in bee colonies was observed as a promising practice. Most beekeepers 98% use annual treatments for varroa mites in light of these findings, it is imperative for beekeeping associations to actively engage and take measures to organize and enhance the beekeeping sector, thereby addressing the current challenges.Item Sustainable beekeeping in algeria: exploring practices, challenges, and local honeybee traits for natural resource management(2024) Haider, Yamina; Adjlane, Noureddine; Martin, Hernande Raquel; Jamal Haddad, Nizar; Khemmouli, AbdelmounaimHoneybees are crucial pollinators, playing a vital role in maintaining plant biodiversity and promoting a healthy natural environment. They serve as bioindicators, reflecting the state of our ecosystems. Beekeeping in Algeria faces significant challenges, particularly the devastating effects of the Varroa mite, an ectoparasite harming bee colonies. This study aimed at understanding the resilience of Mediterranean bee subspecies in the context of climate change. Conducted in 2021, a survey targeted Algerian beekeeping associations and individual beekeepers. The goal was to characterize beekeeping practices, identify key challenges, and evaluate their impact on natural resources and sustainable development. The survey reached beekeepers in 19 Algerian provinces, with a total of 200 responses analyzed. The results highlight constraints hindering beekeeping development: drought, high bee mortality, and the presence of bee diseases. These findings suggest that beekeepers who select colonies with strong overwintering and drought resistance capabilities can potentially improve honey production. The COVID-19 pandemic further impacted honey production, leading to lower yields in recent years. However, positive aspects were also identified, including beekeepers implementing good practices (queen replacement, apiary selection, transhumance) and routine Varroa mite monitoring. Strengthening the role of beekeeping associations in the field is crucial to support the sector's organization and improve its current situation, ultimately contributing to sustainable management of natural resources in Algeria.Item Situation de l'apiculture en Algérie : facteurs menaçant la survie des colonies d'abeilles locales Apis mellifera intermissa(John Libbey Eurotext, 2012) Adjlane, Noureddine; Doumandji, Salah-Eddine; Jamal Haddad, NizarLes abeilles, en plus de leur production de miel, assurent la pollinisation des arbres fruitierset des autres cultures entomophiles. Toute menace sur ces insectes, qu’elle provienne despesticides, des herbicides ou de maladies, a donc des conse ́quences lourdes nonseulement pour l’apiculture, mais aussi pour l’agriculture en ge ́ne ́ral. Depuis plusieursanne ́es, nombreux sont les apiculteurs en Alge ́rie qui ont signale ́des mortalite ́s dans leursruchers. A`l’heure actuelle, nous manquons de donne ́es pre ́cises sur les causes de cesmortalite ́s. Dans le but d’apporter des e ́le ́ments de re ́ponse a`cette question, nous avonseffectue ́une e ́tude de terrain aupre`s des apiculteurs de la re ́gion me ́dioseptentrionale del’Alge ́rie. Cette e ́tude est comple ́te ́e par des informations e ́manant des coope ́rativesapicoles, de l’Institut technique des e ́levages et de la direction des services ve ́te ́rinaires duministe`re de l’Agriculture, ainsi que des laboratoires re ́gionaux de la me ́decine ve ́te ́rinaire.L’analyse des re ́sultats a mis en e ́vidence le roˆle des principales pathologies apicoles, enparticulier leVarroaet les intoxications des abeilles par les traitements insecticides, ainsiqu’une de ́gradation de l’e ́cosyste`me (diminution de la flore mellife`re) et l’influence duchangement climatique. Tous ces e ́le ́ments menacent l’abeille locale et influentne ́gativement sur la production de miel.Item Detection of paenibacillus larvae spores in honey samples from beekeepers of the central region of algeria(Slovak University of Agriculture in Nitra, Faculty of Biotechnology and Food Sciences, 2013) Adjlane, Noureddine; Ameur lain, Karima; Gharabi, Nassiba; Lecksir, Nawel; Haddad, NizarThe American foulbrood in one of the most serious diseases that may affect brood of larvae and pupae stages, which cause economic losses and biological hazards in a large beekeeping sector in several countries across the world in general and Algeria in particular. The causative agent of this disease is a bacterium called Paenibacillus larvae that target bees Apis mellifera the latter are often present in honey.The aim of this project is studying the spread of this disease in the northern region of Algeria through the analysis of honey obtained from these areas. Microbiological, microscopic and biochemical methods were used in this study. The results obtained have shown that the prevalence rate varies from region to region, several factors may explain this variation in the prevalence of the disease. The average infection rate for all regions is 32%. To prevent the spread of this disease in Algeria must be taken is mandatory and means of prevention into account.Item Evaluation of the efficacy of different acaricides again st Varroa destructor on Apis mellifera intermissa in Algeria(2013) Adjlane, Noureddine; Jamal Haddad, Nizar; El-ouness, TarekVarroa mite has become a major concern of beekeepers in Algeria since the discovery of the first cases of infestation in the year 1982. The objective of this study was to test different registered chemicals aside with those prepared by beekeepers. The experiment was conducted on 50 Apis meliffera intermissa colonies in a commercial apiary and kept in standard Langstroth hives. Among the products which are approved in Algeria and tested in our experiment are Bayvarol which recorded the highest efficiency rate (91.62%), followed by Apivar (86.50%) and then Apistan (77.75%). Traditional preparations treatments had very low efficiency where it was only: 39.37% for amitraz and 44.21% for tau-fluvalinate (Mavrik). Our study showed a reduction in the efficiency of commercial products (Apistan, Bayvarol and Apivar) and a very low efficiency for amitraz and Mavrik. Such results prove the high demand of searching for more effective treatments against VarroaItem Varroa destructor resistance to fluvalinate in Algeria(2013) Adjlane, Noureddine; Jamal Haddad, Nizar; Doumandji, SalaheddineVarroa destructor Anderson & Trueman, is considered as a major problem for the beekeeping sector, not only for Apis mellifera L. in Algeria but also worldwide. In cases of no control it can cause severe problems that may end in the death of honeybee colonies. Fluvalinate 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 fluvalinate in the area north-center of Algeria. To determine the mites mortality percentage to the fluvalinate, they were exposed to strips of 2.5 x 1.0 cm. Varroa mortality in apiaries treated with fluvalinate was 41.23%, lower than the 81.51% mortality obtained in apiaries that only received an alternative treatment. A significant difference (P > 0.05) was found between two mortality of Varroa. These results show for the first time the existence of Varroa destructor populations resistant to fluvalinate in Algeria. These results are essential for beekeeping sector not only in Algeria but also in Africa since very little data is available on this issue in the northern parts of Africa.Item The first data on hygienic behavior of Apis mellifera intermissa in Algeria(2014) Adjlane, Noureddine; Jamal Haddad, NizarHygienic behavior is considered as an important factor in selection programs of resistance honey bee mite to Varroa destructor, the objective of this study was to evaluate this behavior Apis mellifera intermissa, the local honey bee race of Algeria. The study was performed on 40 colonies in spring and fall. The results had show a variation in the removal rate of dead brood where it was 91 .56% in spring and, 83.55% in autumn. This is the first test of hygienic behavior in Apis mellifera intermissa in Algeria. We can conclude, that the Algerian local bees are characterized by a good cleaning ability.Item Note scientifique sur les effets secondaires de l’acide oxalique sur l’abeille ouvrière (Apis mellifera ) : aspect biochimique (Scientific note on side effects of oxalic acid on the worker bee (Apis mellifera): biochemical aspect)(2013) Adjlane, Noureddine; Chahbar, N.; Maidi, A.; Doumandji, S.; Jamal Haddad, NizarL’acide oxalique est un moyen de lutte alternative contre la varroase. Cette pathologie causée par l’acarien Varroa destructor est considérée comme l’une des pathologies les plus dangereuses de l’abeille domestique. L’acide oxalique constitue un des moyens de lutte efficace contre cette pathologie, mais il provoque un affaiblissement des colonies d’abeilles. Dans le but d’expliquer les causes de cet affaiblissement, nous proposons cette étude qui a pour objectif de déterminer les effets de l’acide oxalique sur l’aspect biochimique de l’abeille Apis mellifera, en étudiant les variations de la teneur en différents métabolites du corps et de l’hémolymphe (protéines, lipides et glucides). Le traitement à l’acide oxalique perturbe le métabolisme de l’abeille, les résultats obtenus montrent qu’il provoque une chute de la teneur en glucides et des lipides et une augmentation du taux de protéines dans le corps et l’hémolymphe. Ces résultats peuvent expliquer les cas d’affaiblissements enregistrés par les apiculteurs après l’application de ce traitement.Item Physicochemical and Microbiological Characteristics of Some Samples of Honey Produced by Beekeepers In Algeria(De Gruyter Open Sp. z o.o., 2014) Adjlane, Noureddine; Jamal Haddad, Nizar; Kesraoui, Saida; Laid Ameur, Karima; Moussaoui, DjamilaThis study aims to evaluate the physicochemical and microbiological quality of 11 samples of locally produced honey harvested from bee colonies across different regions of Algeria. Honeys analyzed are characterized by their different floral origins. Want germs are total aerobic mesophilic flora, total coliforms, anaerobic bacteria Sulfito-Drive (clostridium), yeasts and moulds. Water content, pH, the concentration of hydroxymethylfurfural and sucrose content were also measured. For the physicochemical properties, most of the samples meet the requirements of Codex Alimentarius. Microbiological results showed that there is heterogeneity in the load of microorganisms sampled. Honeys have a low microbial profile. Total coliforms and clostridium were not detected in any sample. For counting the total aerobic mesophilic flora (TAMF), two local and imported samples have a concentration greater than the standard TAMF. Yeasts and moulds were also present but at low levels, and figures in all but three samples were below the normItem Recherche de paenibacillus larvaedans differents composants de la ruche(Oujda, Morocco : Université Mohammed Premier, Faculte des Sciences, 2014) Adjlane, Noureddine; Jamal Haddad, Nizar; Kechih, S.Dans le secteur apicole, cinq maladies ou organismes nuisibles sont sujets à déclaration obligatoire en Algérie : la varroase, les loques (américaine et européenne), la nosémose et l’acariose des abeilles. Bien que Paenibacilluslarva e constitue une des plus graves affections bactériennes du couvain, peu de données sont actuellement disponibles sur les méthodes de détection de la loque américaine en Algérie. La présente étude vise à comparer entre les méthodes de recherche de cette bactérie dans les différents produits et échantillons de la ruche. Les méthodes de détection sur les abeilles et dans le miel constituent les techniques les plus efficaces pour le diagnostic de la pathologie. Nos résultats ont montré que même en absence de symptômes, 20% de la loque américaine a été détectée dans le miel, et 10% dans les abeilles et les débris de la ruche.