Climate Change Triggering Return of New, & Eradicated Mosquitos & diseases

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 05 November 2018


It’s Already Happening...

Could climate change trigger the return of eradicated mosquito-related disease?
University of Bath, November 5, 2018.


New Ranges
“The largest ever study of the mosquito evolutionary tree, going back 195 million years, suggests that present-day climate change could result in the spread and return of dangerous mosquito-borne diseases to new places or areas where they had previously been eradicated.”

Return of the Classics
“...– including malaria, Yellow fever, Zika virus, and Dengue fever – cause millions of deaths each year. While many of these diseases have been eradicated from Europe and are under control in other parts of the world, resurgence is always possible.”

Bonus for the Skeeters
They Like Heat AND CO2
“...the rate at which new species of mosquitoes evolve generally increases when levels of atmospheric carbon dioxide are higher. This is concerning because the greater the number of mosquito species, the more potential exists for new ways of vectoring diseases, and perhaps for new variants of those diseases.”

Bonus for Mammals?
High CO2 offers camouflage
“It’s only the female mosquitoes that take a blood meal, and they use the CO2 that mammals and other vertebrates exhale as a very general cue to locate their hosts. One line of thinking is that as ambient levels of atmospheric CO2 rose, as they have done in recent decades, mosquitoes may have found it increasingly difficult to distinguish between the CO2 from their hosts and those background levels. “

Unknown Predator-Prey Relationships & New Normal Balance Points…
“We found that the increase in the diversity of mammals led directly to a rise in the number of mosquito species, and also that there is a relationship between CO2 levels and the number of mammal species...”

Times are ‘A-Changing
“It is important to look at the evolution of the mosquito against climate change because mosquitoes are responsive to CO2 levels.“

Big Changes
“Despite some uncertainties, we can now show that mosquito species are able to evolve and adapt to climate change in high numbers. With increased speciation, however, comes the added risk of disease increase and the return of certain diseases in countries that had eradicated them or never experienced them before.”



Relevant Research

Global Mosquito Movement, Asian tiger mosquito on the move


Aggressive nonnative mosquitoes spreading across state carry disease risk


Warming Climate Spreading Skeeters, Ticks, & their Diseases


Dengue Threat


Spread of the Bad Bug Aedes aegypti



Climate Changing Rapidly

Eco Crash News, 2018: Observing Our Rapidly Shifting Seasons and Ecosystems



The Bottom Line

Skeeters which have traditionally been a pain in the ass, have now become a serious personal and public health threat, as our increasing temperatures have introduced a rash of new mosquitos and new diseases into the US, California, and ultimately, the High Sierra.

Backpackers need effective and comprehensive anti-mosquito systems.

Backpacking and Mosquitoes, discusses how to protect yourself.



Skeeter & Tick News, Research, & Information





November 2018 News of Man & Nature





More Nature News Topics

Climate Destruction News



Bee News

Bear News

Spider Forum

Bird News

Small Mammals

Frogs and Reptiles

Butterfly News


Health and Fitness

Mountain Safety

Mosquito News

Female Trail

High Sierra History


Astro-Phys, Space, & Science News

High Sierra Geology News

Fish, Oceans, & Water News



All High Sierra News





climate change enhancing spread of mosquitos and their diseases


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