What is the symbiosis of a bot fly and a deer?

The bot fly and deer have a parasitic relationship, where the bot fly lays its eggs on the deer’s skin. Once the larvae hatch, they burrow into the deer’s skin and develop inside, feeding on the host's tissue. This relationship can cause discomfort and potential health issues for the deer, but it does not typically result in the deer's death. The bot fly benefits by using the deer as a host for its larvae, ensuring their survival and growth.