C. Pirk

Publications125
h-index26
Citations2,410
Highly Influential Citations153
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  • Publications
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Is there a need for conservation of honeybees in Africa?
Honeybees are native to Africa and Europe but have been spread worldwide as the basis for an apicultural industry. To date, large and diverse wild populations only remain in Africa. On this continent… Expand
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Adult honeybees (Apis mellifera L.) abandon hemocytic, but not phenoloxidase-based immunity.
Hemocytes and the (prophenol-) phenoloxidase system constitute the immediate innate immune system in insects. These components of insect immunity are present at any post-embryonic life stage without… Expand
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Natural and within-farmland biodiversity enhances crop productivity.
Ongoing expansion of large-scale agriculture critically threatens natural habitats and the pollination services they offer. Creating patches with high plant diversity within farmland is commonly… Expand
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The importance of protein type and protein to carbohydrate ratio for survival and ovarian activation of caged honeybees (Apis mellifera scutellata)
Pollen is the natural source of protein for bees and it is commonly assumed that a high protein content in pollen is beneficial. Investigation of the optimal nutrient ratio for honeybees was prompted… Expand
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Automatic life-long monitoring of individual insect behaviour now possible.
Automatic tracking and identification of individuals has the potential to revolutionize the study of insects, especially social insects, by opening up options for questions which could not be asked… Expand
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Seasonal prevalence of pathogens and parasites in the savannah honeybee (Apis mellifera scutellata).
The loss of Apis mellifera L. colonies in recent years has, in many regions of the world, been alarmingly high. No single cause has been identified for these losses, but the interactions between… Expand
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Laboratory Rearing of Small Hive Beetles Aethina Tumida (Coleoptera, Nitidulidae)
The small hive beetle (Aethina tumida, SHB) is a common honey bee (Apis mellifera) parasite in Africa that causes little damage to strong colonies (Lundie, 1940). However, it is a serious threat in… Expand
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Convergence of carbohydrate-biased intake targets in caged worker honeybees fed different protein sources
SUMMARY The nutritional needs of bees are supplied by nectar carbohydrates and by protein and other nutrients in pollen but little is known of how bees achieve nutritional balance. Using newly… Expand
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Statistical guidelines for Apis mellifera research
Summary In this article we provide guidelines on statistical design and analysis of data for all kinds of honey bee research. Guidelines and selection of different methods presented are, at least… Expand
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Social encapsulation of beetle parasites by Cape honeybee colonies (Apis mellifera capensis Esch.)
Abstract. Worker honeybees (Apis mellifera capensis) encapsulate the small hive beetle (Aethina tumida), a nest parasite, in propolis (tree resin collected by the bees). The encapsulation process… Expand
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