What is varroa mite and its impact on bee colonies?

The correct choice identifies varroa mite as a parasitic organism that infests honeybee colonies, preying on both bee brood and adult bees. Varroa mites primarily attach to the bodies of bees and feed on their bodily fluids, which can weaken the bees and transmit harmful viruses. This parasitic behavior disrupts the normal development and functioning of the colony, leading to reduced honey production, diminished lifespan of the bees, and ultimately, colony collapse if not managed effectively. The impact of these mites on bee populations is significant, contributing to global declines in bee health and numbers, which in turn affects ecosystem health and agricultural productivity due to bees' vital role in pollination. Understanding the nature of varroa mites and their detrimental effects is crucial for beekeepers seeking to maintain healthy hive populations.