Arthropods

By: Audrey Kent- Mitcham Period 2

Background Information

Chorthippus brunneus

The Chorthippus brunneus (common grasshopper) are found all over in North America, Europe, Asia and Northern Africa. They have three pairs of legs with a pair of antennae and segmented bodies. This specific species of grasshopper play a vital role in feeding and consuming organisms in its food chain. There are either male or female grasshopper that reproduce using sexual reproduction

Procambarus clarkii

The Procambarus clarkii (common crayfish) have segmented bodies and four pairs of legs that include a pair of claws. They prefer freshwater and are found mostly in the south eastern United States. This specific species of crayfish play a vital role in consuming and feeding organisms in its food chain. There are either male or female crayfish that reproduce using sexual reproduction.

Grasshopper Habitat

Grasshoppers are found all over the world and prefer dry, open habitats found in grasslands, farms and can even be found in forests. They cannot survive in extremely cold regions or high mountain tops. There some grasshoppers that live close to water and can swim.

Crayfish Habitat

Crayfish are native to southeastern United States and are found on almost every continent except Antarctica. They live in freshwater habitats like marshes, rivers and reservoirs. Crayfish also burrow in the ground as well.

grasshopper predators

Grasshoppers are preyed on by many organisms such as skunks, shrews, moles, salamanders, preying mantis and toads. They use camouflage to hide from predators by blending in with their surroundings.

Crayfish predators

Crayfish are preyed on by many organisms such as gulls, raccoon, snakes muskrats and opossums. They are also prey to various birds such as gulls, Egrets and Great Heron.

grasshopper prey

Grasshoppers eat various plants such as grasses, leaves, and cereal crops. They prefer to consume vegetation but many are omnivores. Some manly eat one species of plant throughout their life but many eat multiple plant species.

crayfish prey

Crayfish are omnivores and can eat most organisms. They tend to eat anything that falls to the bottom of the water and tend not to hunt for food. Crayfish can consume dead fish, plants and insects.

ecological niche of grasshopper

The niche of a grasshopper involves stabilizing the food chain by being omnivores and consuming it prey. They also stabilize their food chain by being consumed by its predators. Another vital role to their niche is reproducing because their offspring will have the same niche that is just as important.

ecological niche of crayfish

The niche of a crayfish involves stabilizing the food chain by being decomposers and being eaten by its carnivorous predators. They also play a vital role in reproducing because their offspring will have the same niche that is just as important.

ecological adaptation of grasshopper

ecological adaptation of crayfish

evolutionary relationships of grasshopper

evolutionary relationships of crayfish

Objectives

Students will classifying various arthropods such as grasshoppers and crayfish. They will also observe their external and internal anatomy of the specimens and be able to identify each part. The links below provide great information about arthropods and this assignment.

Classifying Arthropods

Grasshopper Anotonamy

Crayfish Anotonamy

Circulatory System of Grasshopper

Grasshoppers have an open circulatory system where blood Flows freely through the body which begins at the hemolymph. It then goes through large blood vessels, into the coelem, to the abdomen and finally the heart.

Circulatory system of Crayfish

Crayfish have a open circulatory system which means they have no veins or arteries and blood flows freely through the body. Begins at the blood starts at hemolymph, then goes through large blood vessels, into the coelem, to the abdomen and finally the heart.

Classifying Arthropods in Person

Classifying arthropods during the lab ended up being really interesting and allowed me to see each body part of the specimen in person. This ended up being a great hands on experience and I learned so much from it.

Cross Unit content

Ecology of Grasshopper

The link below has amazing information over the ecology of grasshoppers. There are great lengths of detail describing events in its life and it is very useful.

Ecology of Crayfish

This article is very informative and describes in great detail the ecology of the crayfish. The link below explains every part of crayfishes life and you can learn a lot from it.

Evolution of garsshopper

The link below explains how grasshoppers have evolved through the years and the different event that have occurred throughout their evolution. The article is very interesting and has great information.

Evolution of crayfish

The link below explains the evolution of a crayfish very well. There is great information and describes in detail events that have cause the crayfish to evolve to what it is now.

Grasshopper taxonomy

Kingdom: Animilia

Phylum: Arthropod

Class: Insecta

Order: Orthoptera

Family: Acrididae

Genus: Chorthippus

Species: brunneus

Crayfish taxonomy

Kingdom: Animilia

Phylum: Arthropoda

Class: Malacostraca

Order: Decapoda

Family: Cambaridae

Genus: Procambarus

Species: clarkii

Human Impact/influences of grasshopper

The link below contains great information about how humans have impacted grasshoppers and have influenced their actions. The article is very informative and describes how grasshoppers have changed since the human influence.

human impact/influences of crayfish

There is great information over the influences and impacts humans have on crayfish in the link below. The article describes the effect off human influence on the crayfish and how the have reacted.

do you know arthropods? quiz yourself!

Citations

  • "Evolution: Crayfish Teeth Bite Back | Nature Communications | Nature Publishing Group."Evolution: Crayfish Teeth Bite Back | Nature Communications | Nature Publishing Group. N.p., n.d. Web. 11 Apr. 2014.
  • "Arthropoda.html 33_29ArthropodAnatomy.jpg." Arthropoda.html 33_29ArthropodAnatomy.jpg. N.p., n.d. Web. 11 Apr. 2014.
  • "Biology4Kids Quiz: Arthropods." Biology4Kids.com: Arthropods Quiz. N.p., n.d. Web. 11 Apr. 2014.
  • "Common Field Grasshopper (Chorthippus Brunneus)." Common Field Grasshopper Videos, Photos and Facts. N.p., n.d. Web. 11 Apr. 2014.
  • "Wanstead Birder." : August 2009. N.p., n.d. Web. 11 Apr. 2014.
  • "Chorthippus Brunneus." Wikipedia. Wikimedia Foundation, 30 Mar. 2014. Web. 11 Apr. 2014.
  • "Weeks Bay Reserve Foundation." Weeks Bay Reserve Foundation. N.p., n.d. Web. 11 Apr. 2014.
  • "Crayfish Environments." Crayfish Environments. N.p., n.d. Web. 11 Apr. 2014.