What is the Likely Cause of "Colony Collapse Disorder" in Honeybees

Question

What is the likely cause of "colony collapse disorder" in honeybees?
A) an increase in predators
B) overexploitation
C) an increase in parasites
D) greater genetic variability

Accepted Answer

Colony collapse disorder in honeybees is most likely caused by an increase in parasites, particularly the varroa mite. These mites weaken the bees' immune systems and transmit viruses, ultimately leading to the collapse of the colony. Other factors such as pesticide exposure and habitat loss can also contribute to the problem, but parasites appear to be the primary cause.