The Incredible Crayfish

Harlem Murray Pre-Ap Biology April 7, 2014 - Mitcham


Students will be learning basic information about crayfish and their habitat.Students will also learn about the functions and organs of the crayfish integumentary system. Students will learn about the anatomys and niche of the crayfish

Background Information

Crayfish, also called crawfish, crawdads, and mudbugs, are a group of small crustaceans that resemble lobsters and to which they are actually closely related.They belong to the kingdom of Animalia, under the phylum Arthropoda and the subphylum Crustacea. They characterized by a fused head and thorax and a segmented body. They live in mostly freshwater habitats and can sometimes live with low levels of saline.Crayfish prey consists of zooplankton and algae, and their predators can be birds, fish, alligators, small mammals and so forth. An adaptation that female crayfish have is being able to store sperm for when the environment is free of predators and for when the water is warm enough.

Integumentary System

Crayfish has a hard exoskeleton that protects and supports the body. Crayfish has 8 jointed walking legs, segmented body, 2 pairs of sensory antennae, and compound eyes. They have 2 large pincers called chelipeds. If a crayfish loses a leg, the leg will regenerate the next time it molts. The crayfish has a fused head and thorax that form the cephalothorax. Crayfish breath dissolved oxygen in water.