Among Some Fish, Heat Stress May Be Contagious, Study Finds

New study uncovers “a yet untested dimension of chemical communication’s heat stress.

Scientists exposed zebrafish embryos to 90 degrees F (32 degrees C) embryos to simulated heat waves.

Fish heat-stressed embryos grew faster, hatched sooner and, once hatched, moved more slowly.

When scientists exposed unstressed embryos to heat, the embryos responded as if they had suffered through a heat wave. PNAS Nexus 32 degrees Katharina Wollenberg Valero span> University College Dublin ext__NxlGi">27 degrees F around 80 degrees