Mosquitoes, Microplastics, and New Species: A Week in Science News

This week's science news includes new insights into mosquito behavior, the discovery of an ancient toad species, and an update on a deadly bacterial outbreak. The reporting period spanned August 8 to August 14, 2026.

What Happened

A study indicated that different species of mosquitoes may be attracted to or avoid people based on varying factors. These preferences could be influenced by an individual's sex, the absence of common fragrances, and the unique microbial makeup of their skin. Separately, state health officials in Louisiana reported that a dangerous bacterium, known to thrive in warm coastal waters, has resulted in five fatalities in 2026. Officials advised residents to implement protective measures against infection from the bacterium, identified as Vibrio vulnificus. In paleontology, a new species of Ice Age toad, named Spea labreae, has been identified from fossils excavated from the La Brea Tar Pits in the 1950s. The discovery offers insights into climatic shifts at the conclusion of the last Ice Age.

Key Facts

• A new study suggests mosquito attraction may be species-specific, influenced by sex, fragrance use, and skin microbes.
• The bacterium Vibrio vulnificus has caused five deaths in Louisiana as of August 6, 2026.
• Officials are advising Louisiana residents to take precautions against Vibrio vulnificus infection.
• A new Ice Age toad species, Spea labreae, has been identified from La Brea Tar Pits fossils.
• The discovery of Spea labreae provides information on climate change during the last Ice Age.
• Fossils used for the toad identification were originally collected in the 1950s.

Background

Scientists have previously raised concerns that the geographical range of Vibrio vulnificus is expanding due to warming temperatures attributed to human-caused climate change.