ARTHROPOD: Hermit Crabs
Classification: Morphology: Biology:
Phylum: Arthropoda Symmetry: Symmetrical Land hermit crabs have developed
Subphylum: Crustacea Structure: Antennnae, Compound modified gills that allow them to also live
Class: Malacostraca eyes, maxillipeds, exoskeleton, on land. They use humidity in the air to
Order: Decapoda chelipeds, periopods, cephalothorax, breathe and their shell water to lubricate
Infraorder: Anomura carapace, setae, gills, pleopods, their gills.
Family: Coenobitidae uropods, telson Hermit crabs have one small feeding claw and
Genus: Coenobita Appearance: - Lacks a shell, so it “borrows” a claw used for defense. When retreating into
Species: C. clypeatus an empty one that originally belonged to their shell the defense claw seals the opening
another animal, such as a snail, periwinkle protecting the hermit crab inside.
or oyster drill.
Phylum: Arthropoda Symmetry: Symmetrical Land hermit crabs have developed
Subphylum: Crustacea Structure: Antennnae, Compound modified gills that allow them to also live
Class: Malacostraca eyes, maxillipeds, exoskeleton, on land. They use humidity in the air to
Order: Decapoda chelipeds, periopods, cephalothorax, breathe and their shell water to lubricate
Infraorder: Anomura carapace, setae, gills, pleopods, their gills.
Family: Coenobitidae uropods, telson Hermit crabs have one small feeding claw and
Genus: Coenobita Appearance: - Lacks a shell, so it “borrows” a claw used for defense. When retreating into
Species: C. clypeatus an empty one that originally belonged to their shell the defense claw seals the opening
another animal, such as a snail, periwinkle protecting the hermit crab inside.
or oyster drill.
Importance:
Ecological- They are scavengers, food sources for other animals and are used by scientists and researchers studying the effects of pollution and coastal change on wildlife.
Economical- Hermit crabs can bring money to businesses near the gulf by being sold as pets in varous locations.
Facts:
1. Hermit crabs are crustaceans.
2. The hermit crabs abdomen does not have a hard ocvering like other crabs.
3. Hermit crabs have gills.
4. 2 major types: Purple Claw crab and Ecuadorian crab.
5. Make great easy pets.
6. They like to climb.
Vocabulary:
1. Decapod (n.) - Any crustacean of the order Decapoda, having five pairs of walking legs, including the crabs, lobsters, crayfish, prawns, and shrimps.
2. Hermit Crab (n.) - Any of numerous crabs, especially of the genera Pagurus and Eupagurus, that protect their soft uncovered abdomen by occupying the castoff shell of a univalve mollusk.
3. Abdomen (n.) - Soft and unprotected part of hermit crab.
4. Exoskeleton (n.) - Hard and protective covering.
5. Molting (v.) - Process of sheading it's shell.
Resources:
1. http://animals.pawnation.com/parts-hermit-crab-5164.html
2. p://dictionary.reference.com/
3. http://www.hermit-crabs.com/
ECHINODERM: SEA STARS
Classification: Domain: Eukarya, Kingdom: Animalia, Phylum: Echinodermata, Class: Asteroidea
Morphology: Radial symmetry, several arms (5 or multiplied by 5) radiating from a central body. Mouth and anus are close together on the underside, the anus is at the center of the disc together with the water intake (madreporite). The upper surface is often very colorful.
Biology: Two adaptations for survival are Autotomy (self amputation) usually is a protective function, losing the body part to escape a predator rather than being eaten, and because sea stars have no hard mouth to help them capture prey, the stomach is extruded over the prey, then sucked back in for decomposition.
Distribution Map: Sea Stars are found in almost all Oceans, from Pacific to Atlantic, they can almost always be found.
Morphology: Radial symmetry, several arms (5 or multiplied by 5) radiating from a central body. Mouth and anus are close together on the underside, the anus is at the center of the disc together with the water intake (madreporite). The upper surface is often very colorful.
Biology: Two adaptations for survival are Autotomy (self amputation) usually is a protective function, losing the body part to escape a predator rather than being eaten, and because sea stars have no hard mouth to help them capture prey, the stomach is extruded over the prey, then sucked back in for decomposition.
Distribution Map: Sea Stars are found in almost all Oceans, from Pacific to Atlantic, they can almost always be found.
Importance:
Ecological- starfish are important in maintaining the balance of nature by thinning out biological excess, consuming carrion, and directly and indirectly creating a diversity of species which provides man a varied menu of seafood.
Economical- starfish are used as a source of lime by farmers in areas where limestone is unavailable. 4,000 tons of the animals are used annually for this purpose. This trade is often carried out with shellfish farmers, for whom the starfish pose a major irritation by eating their stocks. The economic impact of starfish is primarily local.
Facts:
1.Sea starts are not fish.
2. There are thousands of species of sea stars.
3. Not all sea stars have 5 arms.
4. Sea stars are protected by armour.
5. Sea stars do not have blood.
6. Sea stars eat with their stomach inside out.
Vocabulary:
1. Tube feet- Muscular extensions of water vascular system.
2. Pentamerous- Symmetry based of 5 parts.
3. Ampullae- Extended inside of body, opposite of tube feet.
4. Madreporite- A porous plate on the aboral surface.
5. Regeneration- The ability to grow lost or damaged body parts.
Resources:
1. http://quizlet.com/15861661/starfish-vocab-flash-cards/
2. http://animals.nationalgeographic.com/animals/invertebrates/starfish/
3. http://www.edc.uri.edu/restoration/html/gallery/invert/sea.htm
Ecological- starfish are important in maintaining the balance of nature by thinning out biological excess, consuming carrion, and directly and indirectly creating a diversity of species which provides man a varied menu of seafood.
Economical- starfish are used as a source of lime by farmers in areas where limestone is unavailable. 4,000 tons of the animals are used annually for this purpose. This trade is often carried out with shellfish farmers, for whom the starfish pose a major irritation by eating their stocks. The economic impact of starfish is primarily local.
Facts:
1.Sea starts are not fish.
2. There are thousands of species of sea stars.
3. Not all sea stars have 5 arms.
4. Sea stars are protected by armour.
5. Sea stars do not have blood.
6. Sea stars eat with their stomach inside out.
Vocabulary:
1. Tube feet- Muscular extensions of water vascular system.
2. Pentamerous- Symmetry based of 5 parts.
3. Ampullae- Extended inside of body, opposite of tube feet.
4. Madreporite- A porous plate on the aboral surface.
5. Regeneration- The ability to grow lost or damaged body parts.
Resources:
1. http://quizlet.com/15861661/starfish-vocab-flash-cards/
2. http://animals.nationalgeographic.com/animals/invertebrates/starfish/
3. http://www.edc.uri.edu/restoration/html/gallery/invert/sea.htm