Now in our 13th year of bringing you beautiful imagery from biomedical science every day

Search the archive of over 4000 images

Buzz Light

Gene mutated male mosquitos identifiable by fluorescence limit the population

03 July 2022

Buzz Light

The unwelcome buzzing of a mosquito in a dark bedroom is enough to make anyone wish the pesky bugs glowed in the dark and could be easily spotted. An experiment with Aedes aegypti mosquitoes, carriers of viruses including dengue, Zika, and chikungunya, introduced male mosquitoes genetically modified to produce a fluorescent glow to populations in large outdoor cages. Modified males also carried a key mutation that caused their offspring to die. The larvae from these males (pictured) were easily identified under a fluorescence microscope, helping to monitor the efficiency of the approach and illustrate that the modified genes weren’t persisting in the population longer than a single generation. Addition of the modified males caused the elimination of the test populations within 10–15 weeks, suggesting that this approach could reduce Aedes aegypti numbers in the wild, and keep various viruses under control.

Written by Anthony Lewis

Search The Archive

Submit An Image

Follow on Tumblr

Follow on Instagram

What is BPoD?

BPoD stands for Biomedical Picture of the Day. Managed by the MRC Laboratory of Medical Sciences until Jul 2023, it is now run independently by a dedicated team of scientists and writers. The website aims to engage everyone, young and old, in the wonders of biology, and its influence on medicine. The ever-growing archive of more than 4000 research images documents over a decade of progress. Explore the collection and see what you discover. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

Read More

BPoD is also available in Catalan at with translations by the University of Valencia.