Adventures of an Arthropod

Narrated by The Princess

Background

Arthropods are members of the phylum, Arthropoda. They are invertebrates that have an exoskeletion with a segmented body. Arthropods include insects, arachnids and crustaceans. 2 examples of arthropods that we looked at in class are the crayfish and the grasshopper.

Grasshoppers

Grasshoppers belong to the class insecta, for it is an insect. An adaptation of the grasshopper is their mandibles, which are pinches used to tear food. There are about 11,000 different species identified to this day. The diet of the grasshopper consists of grass, leaves, and cereal crops. Predators to the grasshopper include birds, lizards, and rodents. Grasshoppers are found all around the world, but are commonly found throughout the US.
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Grasshopper Facts

  • Females dig holes with their abdomen


  • Can cause crop damage


  • 2 pairs of wings


  • Sometimes eaten by humans

Skeletal System of Grasshoppers

Have a 3 part body (head, thorax, abdomen), exoskeleton made of chitin.


Exoskeleton is divided into sections with flexible joins allowing easy movement.


Taxonomy

Kingdom: Animalia


Phylum: Arthropoda


Subphylum: Hexapoda


Class: Insecta


Order: Orthoptera


Suborder: Caelifera


Crayfish

Crayfish are freshwater crustaceans. They can typically be found in streams, or wherever there is freshwater running. They are able to feed on either living or dead plants or animals. Crayfish are made up of 20 body segments that are grouped into the cephalothorax and abdomen. These groups possess appendages. Crayfish can seemingly be found on every continent. Crayfish are commonly used as food.


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How Interesting is the Crayfish?

  • a hydrogeologist is one who studies crayfish.


  • They can live up to 2 years in captivity.


  • More than 350 crayfish species live in the US


  • Have good eyesight


Taxonomy

Kingdom: Animalia


Phylum: Arthropoda


Subphylum: Crustacea


Class: Malacostraca


Order: Decapoda


Suborder: Pleocyemata


Infraorder: Astacidea


Superfamily: Astacoidea


Crayfish Skeletal System

The crayfish also has a segmented body, which assists in flexibility for swimming. The exoskeleton consists of chitin, protein and lipids; helping protect the creature. The exoskeleton also helps the crayfish maintain homeostasis in temperature. The claws work as the hands of the crayfish, which can also be used for defense.
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"Baby, You're an Arthropod!" Song about insects, crustaceans, arachnids & more by Lucas Miller