Living With Respiratory Filaments

Egg of the Castor Butterfly
Image: Srivastava & Kumar*

Insect embryos develop inside eggs that contain food (yolk) needed for development. The embryo also needs oxygen for respiration. Insect eggs have areas permeable to air where oxygen can reach the embryo. In eggs that are laid in moist areas, water can cover the egg, block the respiratory channels and drown the embryo. Respiratory filaments are an adaptation to wet environments. Respiratory filaments are long tapered tubes that extend…

Source: Living With Insects Blog

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