IFAS News

University of Florida

UF/IFAS researchers find 2 virus-carrying mosquito species; 9 new ones in a decade

Topic(s): Entomology and Nematology, IFAS, RECs, Research

GAINESVILLE, Fla. — A University of Florida Institute of Food and Agricultural Sciences entomologist has found two more non-native mosquito species in Florida that transmit viruses that cause disease in humans and wildlife. That makes nine new mosquito species found in Florida in the past decade.

“The presence of any exotic mosquito is important from a nuisance, or biting, standpoint,” said Nathan Burkett-Cadena, a UF/IFAS assistant professor of entomology at the UF/IFAS Florida Medical Entomology Laboratory in Vero Beach, Florida. “However, these two species are known to transmit pathogens that affect human and animal health.”

Burkett-Cadena found the mosquito species Aedeomyia squamipennis and Culex panocossa in Florida City and Homestead, both in south Miami-Dade County. He and Erik Blosser, a post-doctoral researcher at the FMEL, were visiting South Florida to collect a native mosquito species, Culex cedecei, to investigate its biology and ecology, when they noticed the two non-native species.

They took samples from several environments including forests, farms, roadside ditches and even populated areas using carbon dioxide-baited light traps and vacuums to collect adults and buckets to collect larvae.

Everglades virus, a type of encephalitis virus, is found in South Florida, said Burkett-Cadena, and Culex panocossa is known to transmit encephalitis viruses. Although the new species were found in South Florida, they will likely spread to North Florida and perhaps neighboring states because of widespread, suitable larval habitat, particularly water lettuce, he said.

There is no vaccine or specific treatment for Everglades virus, so preventing mosquito bites is the best protection against infection. While it’s not mosquito season in North Florida, your best protection against getting bitten by any of these mosquitoes is to wear protective clothing and use repellents, preferably ones that have DEET.

Burkett-Cadena has just published a paper in the Journal of Medical Entomology in which he documents how he found Aedeomyia squamipennis. He is simultaneously publishing a paper in the journal Acta Tropica that reports on his discovery of Culex panocossa. Until now, both species have been reported only in Central and South America. Now they’re established in Florida.

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By: Brad Buck, 352-294-3303, bradbuck@ufl.edu

Source: Nathan Burkett-Cadena, 772-778-7200, nburkettcadena@ufl.edu

The mission of the University of Florida Institute of Food and Agricultural Sciences is to develop knowledge relevant to agricultural, human and natural resources and to make that knowledge available to sustain and enhance the quality of human life. With more than a dozen research facilities, 67 county Extension offices, and award-winning students and faculty in the UF College of Agricultural and Life Sciences, UF/IFAS works to bring science-based solutions to the state’s agricultural and natural resources industries, and all Florida residents. Visit the UF/IFAS web site at ifas.ufl.edu and follow us on social media at @UF_IFAS.

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