Dartmouth College – According to the latest report by Dickey’s Institute of Arctic Studies of Dartmouth, the rise in Arctic temperature by 2 °C will lead to an increase in mosquito swarming by 50%. The report suggests that rising temperature is conducive for mosquitoes to grow thus leading to an uptick in diseases caused by them; for instance, yellow fever, dengue and malaria. Additionally, the rise in mosquitoes’ population is also a threat to caribou, as mosquitoes feast on them.
Similar reports had hinted the same scenario
Earlier, the studies conducted by researchers at University of Arizona and also in the U.S. had stated similar concerns. The reports then have left the conclusions on location and time.
For the purpose of this research, a climate-population model was created for the Arctic mosquitoes as well as their predators. The researchers explain that the same model can be seen in a generic way, where the survival of mosquitoes in the ecosystem is dependent upon climate and temperature change.
The rising global temperatures
Change in climate leads to rise in global temperature, which in turn affects the survival, growth rate as well as psychology of insects. On the other hand, insects have also learnt to elude their predators. During the past century, Arctic temperature has risen at twice the rate global rate of increase in temperature.
The mosquitoes in Arctic breed in ponds that are temporary and shallow. They develop when the snow starts melting in the spring in the tundra region.
The lead author of this report, Lauren Culler explained that a 1% increase in temperature leads to the reduction of the growth stage of mosquitoes from larval to pupal by 10%. This will lead to negative impact on caribou’s reproduction as well as on their health. Additionally, there shall be an expansion of more pest species in the northward direction of the world.