grabbing food or snapping at things
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Chelipeds
The chelipeds aren't really related to the movement of the crayfish itself, unconciously these appendages might move the crayfish, but really the chelipeds are a form of defense and used for food handling, much like the one big claw of the "Fiddler" Crab. INother words, the chelipeds are the two big dangrous looking claws of the crayfish.
It's the grasping claws on its front limbs
The chelipeds, mandibles, mazillae, and mazillipeds
A crab has four pairs of legs and a pair of chelipeds (claws).
they are all part of the cephlathorax
Chelipeds are the main grasping claws of crustaceans. The two biggest claws on lobsters, crabs etc.
antenna-touch&taste; chelipeds-capture food and defense; walking leg-locomotion over solid surface; swimmeret-create water current & transferring sperm (males) __ __>> i hope this info helps..... its directly from bio book~
The first pair of legs containing the chelae (claws) are called chelipeds. All five pairs are called pereopods
crabs have 8 legs, 2 pincers:Although crabs come in a variety of shapes and sizes they all have the same general body plan. All crabs have one pair of chelipeds and four pairs of walking legs. Also referred to as claws, nippers or pincers, the chelipeds are the first pair of legs on a crab and their most distinguishing structure. Chelipeds are used for holding and carrying food, digging, cracking open shells and warning off would be attackers. The carapace is the hard cover or exoskeleton which protects the internal organs of the head, thorax and gills.
They are all appendages and they enable the body to move in some way
It is a member of the arachnid family. However, it lacks the tail found in scorpions, it lacks the clawed chelipeds found in psuedoscorpions, it has 2 unfused segments for its body (unlike ticks and mites), and it can dispense silk from "spinnerettes". Unlike insects, arachnids have 4 pairs of walking legs, one pair of chelipeds, 6-8 simple (not compound) eyes, no wings, 2 segments, and chelicerae for mouthparts. Hoped this helped you. :)