Prevalence of Nosema Infection of Honey Bees Colonies in Parts of Nasarawa and Plateau States, Nigeria [Original Research Article]

April 21, 2016

From: International Journal of Current Microbiology and Applied Sciences

A. Dawet*, N. S. Jatau and D. P. Yakubu
University of Jos, Faculty of Natural Sciences, Department of Zoology, Jos, Plateau State, Nigeria
*Corresponding author


Nosema is a microsporidian parasite of honey bees causing high losses in apiculture and consequently in agriculture. A study was carried out to determine the prevalence of Nosema spp in some apiaries in Nasarawa and Plateau States, Nigeria. A total of 71 samples from a cohort of 20 colonies kept in four apiaries in parts of Nasarawa and Plateau states were collected and examined for the prevalence of Nosema infection from June to September, November and December 2013, then January and March 2014. A non-quantitative microscopy method was used to examine for Nosema spp in the honey bees. The data were subjected to Chi-square analysis. The highest revalence (55 %) was observed in Berg apiaries in Karu L.G.A. of Nasarawa state. There is no significant difference (P > 0.05) in the infection of bees between the apiaries, as well as in relation within the rainy or dry season. The infection was generally higher in the rainy season than in the dry season, with the highest prevalence of 71.4 % during the months of August. However, there is a significant difference (P < 0.05) in nosemosis infection between the seasons. The significance of the research is discussed.

From this study, it is obvious that Nosema infection occurred in colonies of in honey bees in some apiaries in Nasarawa and Plateau States.  It therefore confirms that the disease has presumably been transferred from its original host Apis ceranae to Apis mellifera (Klee,et al., 2007). Although no Clinical signs of the disease were seen in the honey bees. This infection could probably be due to consumption of little amount of spores while they forage about. Similarly, mild subclinical infection could be achieved by inducing infected bees to feed on more protein rich materials rather than carbohydrate (Fries, 1993).

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