Topic
Varroa sensitive hygiene
About: Varroa sensitive hygiene is a research topic. Over the lifetime, 714 publications have been published within this topic receiving 24928 citations. The topic is also known as: VSH.
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TL;DR: The results suggest that the frequency of larval or pupal characteristics in worker honeybees that might influence mite reproductive rates cannot be increased by selection based on average mite fecundity.
Abstract: Crosses were made between queens and drones from 16 different commercial sources of Euro- pean honeybees to determine if reproductive rates for Varroa destructor differed. Worker brood from four dif- ferent crosses averaged 4.2 mites per cell and were chosen as the high mite reproduction group. Four others averaged 2.4 mites per cell and were chosen for the low mite reproduction group. A second set of crosses within the high and low mite reproduction groups were made and the worker offspring tested for differences in mite fecundity. Worker brood of the high and low mite reproduction lines did not differ significantly in the average number of mites per cell. The proportion of infested cells with non-reproductive mites also was not affected by selection. These results suggest that the frequency of larval or pupal characteristics that we mea- sured in worker honeybees that might influence mite reproductive rates cannot be increased by selection based on average mite fecundity. Varroa destructor / Apis mellifera / genetic crosses / selection / mite fecundity
12 citations
TL;DR: The effects of varroa on drones, and the potential powerful role of male gamete selection in the breeding of mite-resistant bees are summarized.
Abstract: This article summarizes the effects of varroa on drones, and explores the potential powerful role of male gamete selection in the breeding of mite-resistant bees.
12 citations
TL;DR: This study identifies features that distinguish cells uncapped by bees performing VSH from infested cells that VSH bees ignore, and is the first to identify cell surrounds as a potential source of signals influencing the behaviour of beesperforming VSH.
Abstract: Varroa destructor is a key contributor to honey bee (Apis mellifera L.) colony losses that threaten global economies. Some colonies, especially those displaying high levels of hygiene behaviour targeted towards V. destructor-infested cells, survive mite infestation. Worker bees displaying varroa sensitive hygiene (VSH) open infested brood cells and remove the contents, thereby suppressing mite reproduction. This study identifies features that distinguish cells uncapped by bees performing VSH from infested cells that VSH bees ignore. Brood cells targeted and uncapped by VSH bees were found to be more likely to contain multiple foundress females than non-targeted cells. They also contained higher numbers of mite offspring, and lay within brood cell patches that were more highly infested with V. destructor than were the surrounds of infested cells ignored by VSH bees. This study is the first to identify cell surrounds as a potential source of signals influencing the behaviour of bees performing VSH.
12 citations
TL;DR: Manipulation of the honey bee drone population near a mating apiary was investigated as a method for increasing the frequency of European drones that mate with European queens in an area of Africanized honey bees.
Abstract: Manipulation of the honey bee ( Apis mellifera L.) drone population near a mating apiary was investigated as a method for increasing the frequency of European drones that mate with European queens in an area of Africanized honey bees. Thirty percent of the matings were controlled with only four European drone source colonies, and 40% were controlled with seven colonies. If queen producers can tolerate low levels of mismating, they may not have to drastically alter their management practices.
12 citations
Journal Article•
TL;DR: There were significant differences among treatments in terms of the development of colony population, brood rearing activity and honey yield, and Treatments had no significant effect on wax building activity and swarming tendency.
Abstract: The study was conducted at Alata Horticultural Research institute between 1994 and 1996. The aim of the study was to obtain a strong colony by way of supersedure and empty frames, feeding with saccharose syrup and encouraging egg laying of queen bees at the end of summer. According to the results, there were significant differences among treatments in terms of the development of colony population, brood rearing activity and honey yield. Treatments had no significant effect on wax building activity and swarming tendency.
12 citations