Avancerad sökning
Hittade 3 avhandlingar som matchar ovanstående sökkriterier.
1. Pollinators and Insect Pollination in Changing Agricultural Landscapes
Sammanfattning : Agricultural intensification and associated loss of semi-natural grasslands, has resulted in reduced landscape heterogeneity. A concomitant loss of forage and nest sites for pollinating insects has driven declines across several pollinator taxa. LÄS MER
2. Host-parasite adaptations and interactions between honey bees, Varroa mites and viruses
Sammanfattning : The ectoparasitic mite, Varroa destructor, has become the largest threat to apiculture and honey bee health world-wide. Since it was introduced to the new host species, the European honey bee (Apis mellifera), it has been responsible for the near complete eradication of wild and feral honey bee populations in Europe and North America. LÄS MER
3. The effect of honeybee-specific lactic acid bacteria on american foulbrood disease of honeybees
Sammanfattning : The honeybee, Apis mellifera, is one of the most economically important pollinators and highly valued for its honey and wax production. Managed honeybees occupy an increasingly critical role in agricultural productivity and food security. LÄS MER