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    Controlling Varroa destructor (Acari: Varroidae) in honeybee Apis mellifera (Hymenoptera: Apidae) colonies by using Thymovar® and BeeVital®
    (Avenue Media, 2008) Akyol E.; Yeninar H.
    This study was carried out to determine the effects of Thymovar® and BeeVital® on reducing Varroa mite (Varroa destructor) damage in honey bee (Apis mellifera L.) colonies in spring season. Average percentage of Varroa infestation level was determined as 24.27 on adult workers before the treatments. The drugs were applied two times on 25 September and 16 October 2006. Average percentage of Varroa infestation levels were determined as 5.18%, 10.78% and 35.45% after the first application, 1.90%, 7.05% and 61.15% after the second application in Thymovar®, BeeVital® and control groups, respectively. Average efficacies of Thymovar® and BeeVital® were found to be 96.91% and 88.66%, respectively. Difference between drug efficacies on Varroa mite was found significant (P<0.01). There was no queen, brood and adult honeybee mortality in all group colonies during the research.
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    Influence of sugar experience during development on gustatory sensitivity of the honey bee
    (Elsevier Ltd, 2019) Mustard J.A.; Akyol E.; Robles K.D.; Ozturk C.; Kaftanoglu O.
    The level of response to sugar plays a role in many aspects of honey bee behavior including age dependent polyethism and division of labor. Bees may tune their sensitivity to sugars so that they maximize collection of high quality nectar, but they must also be able to collect from less profitable sources when high quality food is scarce. However, our understanding of the mechanisms by which bees can change their responsiveness to different sugars remains incomplete. To investigate the plasticity of sensitivity to sugar, bees were raised on different sugars either in vitro or in colonies. Bees raised in the incubator on diets containing mostly either fructose or glucose showed significantly more responsiveness to the majority sugar. In contrast, bees raised in colonies that only foraged on fructose or glucose responded equally well to both sugars. These data suggest that developmental plasticity for responses to sugar is masked by the feeding of worker jelly to larvae and young bees. The production of worker jelly from secretions of the hypopharyngeal and mandibular glands by nurse bees ensures that both glucose and fructose are experienced by young bees so that they respond to both sugars and will be able to exploit all future food sources. © 2019 Elsevier Ltd
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    The effects of additive feeding and feed additives before wintering on honey bee colony performances, wintering abilities and survival rates at the East Mediterranean region
    (2006) Akyol E.; Yeninar H.; Sahinler N.; Guler A.
    In this study; the effects of additive feeding with vitamin, fumagillin and pollen supplement on survival rates, wintering abilities, amount of adult bees and brood production were examined at subtropical temperate region before wintering. The wintering ability, survival rates, adult bees and brood areas were positively affected by feeding and feed additives. The lowest values of research components were observed on unfed control groups colonies. © 2006 Asian Network for Scientific Information.
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    The effects of varroa (varroa destructor) infestation level on wintering ability and survival rates of honeybee (apis mellifera L.) colonies [Bal ari{dotless}si{dotless} (apis mellifera L.) kolonilerinde varroa bulaşi{dotless}kli{dotless}k seviyesinin kolonilerin ki{dotless}şlama yetenekleri ve yaşama oranlari{dotless} üzerine etkisi]
    (2011) Akyol E.; Yeninar H.
    This study was carried out to determine the effects of the Varroa (Varroa destructor) infestation level (in fall) on the wintering ability and survival rates of honeybee (A. mellifera) colonies. Four different infestation levels of Varroa in honeybee colonies were tested in this study. Ten honeybee colonies, in which infestation levels were similar, were used for each group. The average wintering abilities in low, medium, high and extreme groups were found to be 94.28%, 91.42%, 63.92% and 23.28% respectively. An average survival rate for the low, medium, high and extreme groups were found to be 100%, 100%, 80% and 40% respectively. Differences among the groups for wintering ability (P<0.01) were significant.