1.Tiger sharks ate a near threatened species. Birth takes plave in the Northern Hemisphere between April and June and in the Southern Hemisphere between November and January. This shark is ovoviviparous. They have heavy dental plates which they use to crush their hard shelled prey. The teeth, and in some cases the vertebrae, are hardened with calcium salts, but this calcified cartilage is not true bone. Cartilage is the flexible substance found that gives human noses and ears their shape! As you may have guessed from the name, members of the Chondrichthyes have The O ₂ diffuses into the gills as water passes over them on their way out of the organism's body. http://animals.nationalgeographic.com/animals/fish/tiger-shark/, http://www.arkive.org/tiger-shark/galeocerdo-cuvier/. tail of cartilaginous fish is also distinctive: the tail is divided into These animals also have adapted to have and a great sense of movement and location of prey. They breath throught gills and have a swim bladder. The female transfers her eggs to the male which he self fertilizes in his pouch. Look carefully at the pictures below. They swim close to the surface and can occasionally be seen jumping clear out of the water. They feed predominantly on bivalve shellfish. The tiger shark can be found all over the world but generally prefer to live in murky water in coastal regions. this means that the embryos develop within the uterus of the female and receive nourishment from a yolk sac.

Because these animals do not only pertain to one source for prey they can easily overcome food shortages. Such a tail is called heterocercal. Ecologically this animals helps by eating trash off the ocean floor. sturgeons and gars) have a symmetrical or nearly symmetrical tail fin -- two lobes, and the vertebrae extend into the upper lobe, which is elongated past the lower half.

Ichthyologists commonly although not unanimously emphasize these similarities by grouping the modern and ancient sharks, rays, and chimaeras in the class Chondrichthyes, the cartilaginous fishes. So a juvenile shark will have more distinct markings than an adult shark. They are found in coastal waters in shallow bays and coral reefs. In contrast, most ray-finned fish (except for primitive forms such as The Bycatch- In the fishing industry, the part of the catch made up of non-target species. They are wary of divers and are difficult to approach.

The teeth, and in some cases the vertebrae, Baby seahorses are known as fry and when they are born they are totally on their own. a cartilaginous skeleton. Large groups of spotted eagle rays may be seen outside of the breeding season. A tiger shark has adapted to have an excellent sense of smell. These marking tend to fade over time. They also have adapted to have sharp teeth so it is easier for them to eat prey and trash. are hardened with calcium salts, but this calcified cartilage is not true bone. Cartilaginous fish also have thick, fleshy fins, unlike bony fish. Tiger Sharks have a very distinct broad head with an broad upper body that becomes slender as it reaches the tail. Chondrichthyes possess 5-7 pairs of gill slits. In winter they move into deeper waters to escape the rough weather.

belongs to a shark? The chimaeras (Holocephali) bear many similarities to sharks and rays in skeletal structure, internal organs, and physiology. Also tiger sharks are used to make leather, its liver is a source of viatamin A, and is eaten as food. The standard prey for the animal is fish, turtles, and other marine animals. Which one As one of the largest sharks in the world the average length is 3.3m (10ft) to 4.3m (14ft) with a  maximum length of 7.5m (24ft). There are around 1,000 species in this class of fish. Typically these animals are a bluish-green to a dark grey color with a yellowish white to stark white underbelly. As one of the largest sharks in the world the average length is 3.3m (10ft) to 4.3m (14ft) with a maximum length of 7.5m (24ft). They rely on their dorsal fin beating at 30-70 time per second to propel it along. Click on the picture to find out. This mean they can look forwards and backwards at the same time. Bilateral Symmetry Segmented Coelomates Invertebrates and vertebrates Four distinct anatomical features Notochord Dorsal, hollow nerve cord Pharyngeal gill slits Muscular, post-anal tail ANCESTRAL DEUTEROSTOME Ecological-They are a popular display aquarium specimen and is often seen in public aquarium facilities. Ecological- They are important to humans for their aestetic appeal, and their biological value. Chondrichthyes (Cartilaginous fish) Osteichthyes (Bony fish) Habitat: Mainly marine: Marine as well as freshwater: Symmetry: Usually dorsoventrally flattened: Usually bilateral symmetry: Endo-skeleton: Cartilaginous: Mostly bony: Caudal fin: Heterocrecal: Heterocercal or diphyceral: Pelvic fin: Usually posterior. Class: Chondrichthyes. Mouth A tiger shark typically feeds at night.

A tiger shark attack on humans is extremely rare. This aquatic animal has bilateral symmetry. Chondrichthyes is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. This is causing the marine creature to begin to become a threatened species. They live in shallow weedy areas especially eel grass beds. Although chordates come in many shapes and sizes, they share the four characteristics listed above and they also all have bilateral symmetry. However they have a very vicious eat habits and will also eat human rubbish. They have excellent eye sight and their eyes are able to work independently on either side of their heads.

As you may have guessed from the name, members of the Chondrichthyes have a cartilaginous skeleton. The species in this class have a flexible skeleton made of cartilage instead of bone.

The tiger shark acquired its name because of the vertical striped markings that go across the entire length of their body. Create your own unique website with customizable templates. Tiger Sharks have a very distinct broad head with an broad upper body that becomes slender as it reaches the tail.

Females give birth to around four live young. They collect water in the mouths which is then passed through the gills. Create your own unique website with customizable templates. Economically these sharks are used for "shark-fin soup" in Asia. They bring water into their bodies using one of two methods: Ram ventilation - requires forward movement by the organism. Body Symmetry of Phylum Chordata. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class). Symmetry-Bilateral Structure-It has a skeleton of cartilage Appearance-Its back is covered with a symmetrical dot pattern ranging in color from white and yellow to green.

This animal has large jaw. Only their teeth, and sometimes their vertebrae, have calcium in them! a homocercal fin.

Chondrichthyes: More on Morphology. This aquatic animal has bilateral symmetry. They are poor swimmer. The male is the only creature where the male has a true reversed pregnancy.

Cartilaginous fish also have thick, fleshy fins, unlike bony fish. Aesthetic- Concerned with beauty or the appreciation of beauty. Mostly anterior, occasionally posterior.



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