Running along Brazil’s coastline, the Atlantic Forest supports an extraordinary range of life, including hundreds of species of birds, amphibians, reptiles, mammals, and fishes. Much of that richness has been lost. Human development has reduced the forest to roughly one third of its original size. As people move deeper into once intact habitats, wildlife is pushed out, and mosquitoes that once fed on many different animals appear to be shifting their attention toward humans, according to a study published in Frontiers in Ecology and Evolution. …Scientists extracted DNA from the blood inside the mosquitoes and sequenced a specific gene that works like a biological barcode. …Mosquito bites are not just a nuisance. In the regions studied, mosquitoes spread viruses such as Yellow Fever, dengue, Zika, Mayaro, Sabiá, and Chikungunya.