Just Tak'in a Look at Arthropod

Ching-Hung Chang (Clement) Vu-PAP Bio-1


Students will learn to identify arthropods and learn about diffrent type of arthropods through observing them.

What is an Arthropod?

Arthropod are invertibrae that have exoskeleton, a segmented body, and jointed appendages. Arthropod is a Phylum and insects and shrimps are all part of this phylum. In the lab we mainly focus on Grasshopper, Melanoplus ponderosus, and Crayfish, Cambarus Faxon.


Grasshopper Integumentary System

Grasshopper is consist of head, thorax, and abdomen. In head, there are compund eye for seeing, and antennae for sensing viberations. Labium, the mouth, is also there. In thorax, there are forewings and hindwings for flying. The typanum, located beside the legs are for detecting sounds. At abdomen, it is where the long leg for jumping is located. Fumer is the thick part of the leg that turns and pushes tibia down. Tarsus is the part of the leg that contact the ground.


Crayfish Integumentary System

Crayfish have a hard exoskeleton to protect itself against enemy. Cheliped helped Crayfish capture food and defend. Crayfish's body is composed of abdomen and cephalothorax. Cephalothorax is fused head and thorax. Crayfish also have 4 pairs of jointed leg for walking, compund eye for sensing, swimmerets for swimming, feeding appendages to put the food in the mouth, and 2 pairs of antennae to sense things. Crayfish is capable of regrowing its leg once it is detached.