Albuquerque, NM

A New Mosquito Is Stalking New Mexico

Daniella Cressman
"If you’ve been stalked by tiny striped mosquitoes this summer, you’re not alone. These bold black-and-white bugs, aka Aedes aegypti, are 'aggressive biters' and 'a little bit sneakier' than other mosquitoes." —Nick Pederson

As with many catastrophes across the globe, this is yet another result of climate change—these mosquitos are far more dangerous than you might anticipate.

"Found in Albuquerque and points south, the Aedes aegypti mosquito has spread rapidly across the state in recent years as a result of climate change. They may be just a nuisance now, but these mosquitoes are the primary route of transmission of four critical mosquito-borne viruses: Zika, Chikungunya, dengue fever and yellow fever. None of these diseases have been transmitted in New Mexico, Pederson said, but the Aedes aegypti’s uniquely effective adaptations to its hosts — humans — means it poses a particular danger." —Sara Van Note

Aedes aegypti mosquitos can cause explosive pandemics.

"[Aedes aegypti] can cause truly explosive epidemics....These mosquitoes are 'humanfocused'...They’re not interested in biting other animals. Unlike the West Nile virus, transmitted from birds to humans, humans are the reservoir for these four viruses. So one Aedes aegypti mosquito can spread a virus rapidly from person to person. Aedes aegypti die if exposed to low temperatures. But climate change brings milder winters that makes it easier for them to overwinter." —Kathryn Hanley

We already know that climate change has led to worsening natural disasters that will only become direr, but there is yet another con—more virus-carrying mosquitos.

"The United Nations’ Intergovernmental Panel on Climate Change report published this year warns 'climate change is projected to impact the distribution, abundance and infection rates of mosquitoes in North America.' The report projects an increasing risk of mosquito-borne diseases, including dengue, endemic in Mexico, which is predicted to spread north across the border." —Sara Van Note

The species was first documented in Duke City in 2018.

"Native to Africa, the species arrived in the Americas during colonial times and became established in the southern U.S. They were discovered in Doña Ana County in 2016, and first documented in Albuquerque in 2018. Pederson has observed the local impacts of climate change in Albuquerque. Mosquito season used to start around Memorial Day and wrap up by the Balloon Fiesta, he said, but now 'we’ve seen an extension of the mosquito season by often weeks on either side of that time frame.'" —Sara Van Note

While it is nearly impossible to stamp out the problem altogether, there are precautions that residents can take to minimize the risks.

"Aedes aegypti’s lifestyle is another key factor in their growing range. They live inside or in close proximity to homes, where they’re insulated from cold weather.That makes it hard to control their populations, Hanley said. Standard methods like spraying for adult mosquitoes may not be a viable option within or close to homes. Since these mosquitos need to live near humans, they’re only found in areas with dense human populations, not in farmlands or wetlands, Hanley said. She predicts they will continue to move north through New Mexico, leapfrogging between cities. But highelevation cities like Santa Fe with cold winters may be inhospitable to them — for now. [Nick] Pederson emphasizes there’s no quick fix for Aedes aegypti. 'It’s not something that the city or county is going to come in and spray away,' he said. Every neighborhood needs to have management plans to help lessen their numbers. Aedes aegypti make a big impact in urban areas in part because they’re more widespread than other mosquitoes. Pederson surveys numerous sites throughout Albuquerque and Bernalillo County, and has found Aedes aegypti everywhere west of the Sandias. Unlike other mosquito species that need bigger areas of standing water, Aedes aegypti breed in small containers, like rainwater collected in a children’s toy or a dish under a potted plant... Pederson has several tips for minimizing these pests, including dumping out containers of water and scrubbing the containers, since their eggs can withstand drying and hatch after getting soaked again. Pederson noted Aedes aegypti are active during the daytime, mostly a couple of hours after dawn and a couple of hours before dusk. Wearing repellent when outside will deter them. He recommends a DEET-based repellent or one with lemoneucalyptus oil. Yet the big picture for mosquito control across the state is critical. Hanley said New Mexico isn’t prepared to address a new mosquito-borne disease. 'My concern is predominantly that we don’t have uniform surveillance for mosquitoes and mosquito-borne diseases in the state.' She cited Albuquerque’s program as an example of good surveillance. But she called the rest of the state’s surveillance 'spotty' and said mosquito control programs at the county or district level are 'very fragmented.'" —Sara Van Note

New Mexico is in a fragile place when it comes to addressing this issue due to a lack of funding.

"The New Mexico Department of Health did not provide a representative for an interview for this article. In a written statement, spokesperson David Morgan said, 'The Department of Health recognizes insect population surveillance to be among the many funding opportunities important in our ongoing effort to rebuild public health infrastructure.' Morgan also noted the department’s vacancy for a state entomologist. Hanley said the problem isn’t lack of expertise across the state. It’s lack of funding. She calls for an increased budget via a legislative line item. Without adequate resources, she said, 'we will mostly be blind to what’s happening in the state.'" —Sara Van Note

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