All About Arthropods!
By Leighanne Masri
Vu - PAP Bio - Per.4
Lab Pictures!
Objectives
In this presentation you will learn:
- All about grasshoppers and crayfish
- External and internal anatomy
- Interesting facts
- Body systems
- Key information
Grasshopper: Background Information/ Ecology
Scientific name:
Habitat:
Adaptations:
- Hard exoskeleton for protection
- Camouflaged to hide from predators
- Long hind legs used to jump away from enemies
- Very sharp hearing
- Special breathing holes
- Spray their predators for protection
Human Impact/ Influence
Niche
- Fertilize it's surroundings with it's droppings (frass)
- Return nutrients to soil
- Serve as food
- Swarm and feed off crops
Anatomy
Crayfish: Background Information/ Ecology
Scientific name:
Cambarus
Habitat:
- Fresh water habitats
- Lakes
- Ponds
- Rivers
Adaptations:
- Evolved to live in freshwater instead of the ocean
- Sensitive antennae, to detect movement in the water
- Four legs to walk on land
- Pincers to fight off predators
- Hard shell
- Molt exoskeletons as they grow
- Camouflage exoskeletons
- Re-grow appendages (pincers and legs) when they lose them
- Large spectrum of vision
Human Impact/ Influence
Niche [Human Relations]
- Omnivoric scavenger
- Eat aquatic organisms
- Provide food for predators
Anatomy
Body System Focus
Grasshopper: Respiratory System
Organs
- Spiracles: There are ten spiracles. These are the site where air is taken in first.
- Air sacs: Store air from tubes.
- Atria: Small spaces that the spiracles open to.
- Tracheae: fine air tubes that have a wall of single layered epithelial cells.
Crayfish: Integumentary System
Structures
- Walking legs: Help with movement.
- Swimmerets: Help with movement in water.
- Antennae: Help with sensing.
- Compound eye: Help with vision.
- Chelipeds (pincers): Help catch prey and protect itself from predators.
Taxonomy (Cladogram)
Extras!
Grasshopper/Crayfish Interesting Information!
- Can leap up to 20x it's length with it's hind legs
- They make their sound by rubbing their legs together
- Over 18,000 different species
- Grasshoppers live for about one year
- No eyes
- No ears
- Tympanal organ, helps to hear
- In Japan, grasshoppers are seen as good luck
- Grasshoppers have a small cuticle on their knee that helps with catapulting into the air
Crayfish:
- Females store sperm until ready to fertilize eggs
- Exoskeletons don't grow with them
- Water and land creatures
- Aren't born red
- Over 500 crayfish species
- Normally 3-4 inches long
- Freshwater creatures
- Contain inner gills that allow them to live out of water!
- Eggs develop while attached to the swimmerettes of females
- Crayfish feed at night
Links with more information:
WORKS CIted
Pictures/ Videos:
http://epiphanyscience.wordpress.com/2012/07/06/crayfish-claws-when-size-matters/
http://www.nutnet.umn.edu/arthro
http://dj003.k12.sd.us/science%20labs/dissection/grasshopper%20dissecton.htm
http://www.freezingblue.com/iphone/flashcards/printPreview.cgi?cardsetID=252257
http://www.jeanierhoades.com/dear-birds/
http://bythedrop.com/gallery/insects/crickets-grasshoppers/Two-Striped-Grasshopper-Walking-Grass
http://www.gondwananet.com/australian-animals-reptiles-turtles.html
http://oceanexplorer.noaa.gov/explorations/03mountains/logs/jul18/media/shrimp8.html
https://msmaine.wikispaces.com/Koalas+and+Platypi
http://www.tutorvista.com/content/biology/biology-ii/respiration/grasshopper-gaseous-exchange.php#
http://www.enchantedlearning.com/subjects/invertebrates/crustacean/Crayfishprintout.shtml
Information:
http://www.whateats.com/what-eats-a-grasshopper
http://www.bugfacts.net/grasshopper.php#.U0SbtfldWSo
http://www.express.co.uk/fun/top10facts/383268/Top-10-facts-about-grasshoppers
http://animals.pawnation.com/crayfish-adaptations-5605.html
http://www.biologyjunction.com/crayfish_dissection.htm
http://crescentok.com/staff/jaskew/isr/biology/biolab46b.htm
https://sites.google.com/site/whatwasassignedandorhandedout/
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/I/Invertebrates.html
https://www.johnston.k12.ia.us/schools/Lawson/Gradelevellinks/Crayfish/funfact.html
http://929thelake.com/10-fun-facts-about-crawfish/
http://www.fcps.edu/islandcreekes/ecology/crayfish_(cambarus).htm
http://www.tutorvista.com/content/biology/biology-ii/respiration/grasshopper-gaseous-exchange.php#