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Mosquitoes Could Spread Microplastics, Study Suggests
The research, published Wednesday in the journal Biology Letters, is the first to show that bits of plastic can be transferred between a mosquito's life stages that use different habitats.
For the study, the scientists fed the larvae of Culex pipiens—the common house mosquito—different-sized fluorescent polystyrene beads. The researchers found that the tiny fragments stayed in the larvae's bodies as they matured into flying adults.
Beads that were smaller than 2 micrometers in size transferred "readily" into pupae and adult stages, while larger beads that were 15 micrometers in size transferred at a "significantly reduced" rate, the paper states.
"Larvae are filter feeders that waft little combs towards their mouths, so they can't actually distinguish between a bit of plastic and a bit of food," lead researcher Amanda Callaghan of the University of Reading told The Guardian. "They eat algae, which are more or less the same size as these microplastics."
The study suggests that plastics could enter the larger food chain if birds, bats or other creatures eat the mosquitoes.
"The implication is that you can have plastics at the bottom of the pond that are now going up into the air and being eaten by spiders and bats and animals that normally wouldn't have access to that plastic," Callaghan told The Independent.
"You could have a dragonfly, for example, eating mosquitoes as they are emerging—so it could be eating lots of mosquitoes with plastic in them, and then a bird could be eating that and getting an even bigger dose."
The researchers are now studying if consuming plastics harms the mosquitoes, The Guardian reported.
"It is a shocking reality that plastic is contaminating almost every corner of the environment and its ecosystems," Callaghan added. "Much recent attention has been given to the plastics polluting our oceans, but this research reveals it is also in our skies."
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Andrea Rodgers, second from the right, takes notes during a hearing in the Juliana v. U.S. case before the 9th Circuit Court of Appeals in Portland, Oregon on June 4. Colleague Elizabeth Brown sits to her left, while colleague Julia Olson sits on her right, with co-council Philip Gregory on Julia's right. Robin Loznak / Our Children's Trust
By Fran Korten
On June 4, Andrea Rodgers was in the front row of attorneys sitting before a three-judge panel of the 9th Circuit Court. The court session, held in Portland, Oregon, was to determine whether the climate change lawsuit (Juliana v. United States) brought by 21 young plaintiffs should be dismissed, as requested by the U.S. government, or go on to trial.
70 Arrested at Extinction Rebellion Protest Demanding More Urgent Climate Coverage From New York Times
By Irene Banos Ruiz
Alarming headlines regarding the climate crisis often overshadow positive actions taken by citizens around the world, but that doesn't mean they're not happening.
They are, and sometimes with considerable success. DW looks at some civil society victories.
Oregon republicans fled their state rather than do anything to stop the climate crisis. The state republicans abrogated their duties as elected officials and ran away since they don't have the votes to stop a landmark bill that would make Oregon the second state to adopt a cap-and-trade program to curb greenhouse gas emissions, as Vice News reported.