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Fig. 1. Prey–predator interactions between juvenile crayfish and dragonfly nymphs recorded with a digital video camera. (A) Single video frame showing a dragonfly nymph (Anax junius; left) in preparation for attacking a juvenile crayfish (Procambarus clarkii; right). (B) Three video frames, from top to bottom, illustrating a predatory strike by the dragonfly nymph (right; note the extension of the white-colored labium in the middle frame) that evokes an escape tail-flip by the crayfish (left, bottom). (C) Single video frame showing a dragonfly nymph feeding on a captured crayfish.





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