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Blue Crab

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by

Gabriel Angel

on 18 December 2012

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Transcript of Blue Crab

Background photo by t.shigesa Blue Crab Gabriel Angel Delgado P.: 8th Blubly Krabby 12/18/12 Callinectes sapidus Its blue (in it's majority), some crabs have yellow and green parts.
It is an invertebrate.
It is an omnivore.
It is an exo skeleton.
It is small.
It lives usually under water. Habitat Biotic Star Fish
Seaweed
Mussel
Plankton Abiotic These are some abiotic or non-living organisms that can be found surrounding the blue crab Water
Rocks
Sand Bring it on!! The females have red tipped claws.
It can be found mostly in early spring to late fall. Blue crabs are mostly found in brackish coastal lagoons and estuaries from Nova Scotia, through the Gulf of Mexico, and as far south as Uruguay.
It can be also found in shallow and brackish waters, eel grass beds & muddy bottoms. (beautiful savory swimmer) Food Chain Food chain is the sequence of organisms that gets energy (food) from other single organism.
It also shows what organism eats it. Wanna watch THIS? Food Web Food web is what shows what organisms are eaten by and what they eat. NOT one organism in specific. Energy Pyramid The energy pyramid is what shows the different levels (trophic levels) of a food chain. It starts from producers (bottom), then primary consumer, secondary consumer, etc.
Every level going up, the organism decrease. Human Impact Throwing trash to water; it makes the water dirty and the animals will slowly die because of it. Fishing the animals; the amount of animal will decrease and animals that eat them will slowly die because there is no food for them. Global warming; humans cut the trees and makes global warming increase because the lack of oxygen and water will evaporate and there wont be habitat for the animals. These are some biotic or living organisms that can be found surrounding the blue crab Female ======> <====== Male Symbiotic Relationships Mutualism:
Is when two different organisms benefits from each other. Comensalism:
Is when an organism benefits from the other, and the other doesn't care. Parasitism:
Is when an organism lives from another organism and the host is slowly dying. Examples: Predation & Competition Predation is when an organism (usually bigger and carnivore) chases and eats another organism (usually smaller and herbivore). They are different species. Competition is when two organisms (either same specie or not) fight usually to death for the same resource. Examples: Predation: Competition Blue crab eating a mussel Two males fighting for a mate Mutualism Parasitism Comensalism Crab and Seaweed:
The blue crab hides in the seaweed from predators and the blue crab protects it from limpets (seaweed's predator) Crab and Oyster:
Oysters filter feed the water around crabs. Crab doesn't care. Screwworms and crabs:
The screwworms put its eggs in other animals (like crabs) so that animal can protect the while they're preparing to hatch and then the babies eats the host
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