What is the impact of global warming on the distribution of parasites?

Global warming affects the distribution of parasites by altering their habitats and the environmental conditions necessary for their survival and reproduction. As temperatures rise, many parasites can thrive in previously inhospitable areas, leading to a potential expansion of their range into new geographic regions. This is particularly relevant for vectors such as mosquitoes and ticks, which are implicated in the transmission of various diseases. Warmer climates can shorten the developmental time of these parasites while simultaneously expanding the areas where they can survive and reproduce. This could lead to increased encounters between parasites and their hosts, affecting disease transmission dynamics and overall public and animal health.

In contrast to this, the other options do not accurately reflect the relationship between climate change and parasite distribution. A decrease in prevalence, no effect, or a complete die-off of parasites fail to take into account the adaptability of these organisms and the impact of changing environmental factors that appear to favor their proliferation rather than hinder it.