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Even when they are smaller than a short grain of rice, larvae of the Philippine mantis shrimp display ultra-fast movements, according to a new study. Their ultra-fast punching appendages measure less than 1 millimeter (0.039 inches), and develop right when the larva exhausts its yolk reserves, moves away from its nest, and out into the big wide sea. It immediately begins preying on organisms smaller than a grain of sand. Although they accelerate their arms almost 100 times faster than a Formula One car, Philippine mantis shrimp ( Gonodactylaceus falcatus) larvae are slower than larger adults, which goes against the theoretical expectation that smaller is always faster. ....
Date Time Baby Mantis Shrimp Don’t Pull Their Punches Tiny and transparent mantis shrimp larvae provide insights into the mechanisms behind ultra-fast movements. Researchers can see muscles contract to slightly deform the exoskeleton and lock the arm in striking position. (Jacob Harrison) DURHAM, N.C. – Mantis shrimp don’t need baby food. They start their life as ferocious predators who know how to throw a lethal punch. A new study appearing April 29 in the Journal of Experimental Biology shows that larvae of the Philippine mantis shrimp (Gonodactylaceus falcatus) already display the ultra-fast movements for which these animals are known, even when they are smaller than a short grain of rice. ....
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