Folds in the surface of their first two pairs of gills eventually turned into hollow branched structures, almost like tiny lungs. The insect’s tracheae system is much more efficient at reducing water loss when you compare it to the pill bug’s gills.īut over evolutionary time, the pill bug’s gills have adapted to life on dry land. Insects can also adjust the amount of air they let into their respiratory system. It allows animals like bumblebees to sustain the enormous amount of effort required to fly from flower to flower. Photo by Teodros Hailye/KQEDįor smaller animals like insects, the tracheae system is extremely efficient at delivering oxygen. An artist’s representation of a house cricket’s respiratory system showing the hollow tubes called tracheae that bring fresh air to the insect’s tissues.
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