Anatomy of an Arthropod
Anthropod lab Emily Myers-Pap-Bio-2
Astacoida and Caelifera
The grasshopper is an insect of the suborder Caelifera in the order Orthoptera. To distinguish it from bush crickets or katydids, it is sometimes referred to as the short-horned grasshopper. Species that change colour and behaviour at high population densities are called locusts.
Crayfish respiratory system
Grasshopper respiratory system
A grasshopper like all insects gets O2 though the exoskeleton and to a greater extent through a hole(s) in its belly called spiracles, these openings lead to trachea and into the body.
The blood is bathed in this oxygen, the blood is pumped from the bottom of the body to the top and flows over the organs, there are no veins or arteries in that sense.
Similarities between the two
Crayfish and grasshoppers have compound eyes, though the crayfish's eyes are at the ends of stalks. They both have antenna which help them sense the world, and bilateral symmetry, which means their left and right sides are mirror images of each other. They both have an exoskeleton, and a segmented body separated roughly into a head, a thorax and an abdomen. Appendages are attached to the body segments. Both crayfish and grasshoppers have three pair of mouth appendages, and eat vegetable matter, though the crayfish's diet is more omnivorous. The viscera of a crayfish includes the brain, heart, and gut, as does the viscera of a grasshopper. Both of them use hemolymph instead of blood, which directly delivers nutrients to the organs. Both grasshoppers and crayfish are found in Asia, Australia, North and South America, and Europe.
Habitat of a crayfish
Rivers and brooks are the main living habitat for the crayfish due to their water clarity and thin ice conditions. Humans will rarely see crayfish during the day but if you shine a flashlight in the water at dark its a whole different story. These guys do their traveling and feeding during the darkest hours of the night. You will see them walking ever so slow to their destinations but when danger arises, the flap their strong tail and their gone in the blink of an eye.
Crayfish predators
Grasshopper habitat
Grasshopper predators
Grasshoppers jump or fly away, and then hide if they can. Some species eat toxic plants and keep the toxins in their bodies to discourage predators.
Known Predators:
ground beetles (eat eggs), wasps, ants, praying mantids, spiders (any kind that is big enough), mites (eat eggs, parasites on adults), centipedes, frogs, toads, lizards, snakes, birds, small mammals especially shrews.