Halil  Yeninar, Ethem  Akyol, 
    The Effects of Varroa (<I>Varroa destructor</I>) Infestation Level on Wintering Ability and Survival Rates of Honeybee (<I>Apis mellifera</I> L.) Colonies,
    Journal of Animal and Veterinary Advances,
    Volume 10,Issue 11,
    2011,
    Pages 1427-1430,
    ISSN 1680-5593,
    javaa.2011.1427.1430,
    (https://makhillpublications.co/view-article.php?doi=javaa.2011.1427.1430)
    Abstract: This study was carried out to determine the effects of the Varroa (<I>Varroa destructor</I>) infestation level (in fall) on the wintering ability and survival rates of honeybee (<I>A. mellifera anatoliaca</I>) 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. A total of forty colonies were used. 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&lt;0.01) were significant. A strong, negative correlation was found between the wintering ability, the survival rates and the level of varroa infestation (r = -0.71, r = -0.69). The colonies infested with high rates of varroa showed less wintering ability and lower survival rates than the low infested colonies.
    Keywords: survival rates;wintering ability;Varroa infestation;Honeybee