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Wednesday, January 30, 2013

Spring Peeper

Beauty Of Animal | Spring Peeper | There are two subspecies of the Spring Peeper, the Northern (P. c. crucifer) and the Southern Spring Peeper (P. c. bartramiana). The Northern is similar to the Southern except for a strong dark marking on the Southern frog's belly. The Southern (P. c. bartramiana) is found along the southern Gulf Coast from south eastern Texas to northern Florida and southern Georgia, while the northern can be found all over the eastern USA and eastern Canada.
Spring peepers are to the amphibian world what American robins are to the bird world. As their name implies, they begin emitting their familiar sleigh-bell-like chorus right around the beginning of spring. Found in wooded areas and grassy lowlands near ponds and swamps in the central and eastern parts of Canada and the United States, these tiny, well-camouflaged amphibians are rarely seen. But the mid-March crescendo of nighttime whistles from amorous males is for many a sign that winter is over.
Spring Peepers primarily live in forests and regenerating woodlands near ephemeral or semi-permanent wetlands. The amphibious species require marshes, ponds, or swamp regions in order to support the aquatic environment the eggs and tadpoles need. In the northern reaches of their range, Spring Peepers must frequently endure occasional periods of subfreezing temperatures during the breeding season. The species can tolerate freezing of some of its body fluids, and undergoes hibernation under logs or behind loose bark on trees. It is capable of surviving temperatures as low as -8°C. 
 
This species frequently occurs in breeding aggregations of several hundred individuals, and commonly breeds in many small wetlands, including swamps, temporary pools and disturbed habitats such as farm ponds and borrow pits Spring Peepers breed in southern areas from October to March, depending on the local temperature. In northern areas, they breed between the months of March to June when the warm rain starts. P. crucifer typically lay around 900 eggs per clutch, but up to 1000 is possible
 
Egg clusters are hidden under vegetation or debris at the water base. After hatching, they transform into frogs and are ready to leave the water in about eight weeks. In very cold weather, they hibernate under logs and loose bark. Spring Peepers often call day and night as long as the temperature is above freezing, but they are mostly heard and usually not seen because they usually hide in dense plants.
They are especially easy to hear due to their extremely loud mating call which gives them the name "peeper", but it is often hard to pinpoint the source of the sound, especially when many are peeping at once. The peepers generally like to breed when it is closer to dusk and throughout the evening and early morning hours. Their calls can be heard from as far as one mile to two and a half miles depending on the amount of peepers in one pond. The Spring Peeper can go on to live an estimated 3 years in the wild.

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Golden Lion Tamarins

Beauty Of Animal | Golden Lion Tamarins  | Golden Lion tamarins take their name from their impressive manes thick rings of hair reminiscent of Africa's great cats. The golden lion tamarin may be the most beautiful of the four lion tamarin species. Its abundant golden hair frames a charismatic black face and covers its small body and tail. Despite their name, these rare primates have far more in common with their monkey relatives than any feline. The golden lion tamarin forms social family groups. Males help to raise their offspring, and often carry their young on their backs in between feedings. Tamarin young are usually twins. The Golden Lion Tamarin by her hair bright red-orange skin for a long time. The Golden Lion Tamarin is the largest marmosets.
As with all New World monkeys, the Golden Lion Tamarin tegulae, the claw-like nails, nails instead of ungulae or apartment is in all other primates, including humans. Tegulae allow tamarins to the sides of trees cling to. The Golden Lion Tamarin has a very limited range, and that over time have all but lost 2-5% of their original habitat in Brazil. Today is the tamarind to three small areas of the rain forest in southeastern Brazil Poco das Antas Biological Reserve limited, Fazenda UniĆ£o Biological Reserve, private lands through the reintroduction program. Tamarins live in the lowland coastal forests, below 300 m (984 ft) above sea level. The Golden Lion Tamarin is active for up to 12 hours per day.
Golden lions live primarily in the trees. They sleep in hollows at night and forage by day while traveling from branch to branch. Long fingers help them stay aloft and snare insects, fruit, lizards, and birds. These interesting animals are critically endangered, as are many of the forests in which they live. Brazil's Atlantic coastal rain forests are disappearing due to ever-expanding logging, agriculture, and industry, and unfortunately, the golden lion tamarin is in danger of vanishing with them.
The reproductive system of the Golden Lion Tamarin is largely monogamous. If two grown men in a group, a mates with the female. Only dominant female can reproduce and fix bitches in the other group. Men can reach puberty 28 months. Tamarins have a gestation period of four months. Golden Lion Tamarin cooperative breeding groups are infants. Youth group members lose opportunities for improvement, but they gain experience in helping parents raise their younger siblings. Young people in his youth at 17 weeks come and socializing group members. Subadult stage reached in 14 months and will initially tamarind adult behavior.

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Tuesday, January 1, 2013

Thresher Shark

Beauty Of AnimalThresher Shark The Thresher Shark is also known as the Alopias Vulpinus or Fox Shark. Its name comes from the sharks unusually large tail (caudal fin), which is in most cases, as long as the shark itself, It's origin is also surrounded by mystery. Most likely, the closer relative of the Fox Shark is the Megamouth Shark. Scientific studies are ongoing to try and resolve the many mysteries that surround this unusual and unique fish. The largest known Thresher Sharks reach a length of more than 6 meters (20ft) and weigh 600 kilograms (216 pounds). Bigeye Thresers are normally the largest with Pelagic Threshers being the smallest.
These are slow growing sharks. They reach their maturity between 8 and 13 years old and live about 22 years. Again, there is quite a bit of mystery here. Some believe this shark is capable of living much longer, but simply hasen't been verified. Although Thresher Sharks love open and deep waters, they are also found in shallow waters near coastal areas. They are generally not found deeper than 500 meters (1,640ft). They favor the Pacific and Indian Oceans, especially at the continental shelves of America and Asia. But the exact habitat, again, remains largly a mystery.
In addition to electro receptors that all sharks have, which gives them they ability to detect electrical impulses from living creatures, they also have an extraordinary heat exchanger system. They're called "endoderms", which means that they have special thermoregulation. In other words, they produce heat through an internal body mechanism such as enhancing their metabolism and miscle shivering. This is largly a unique feature in Thresher Sharks. These are very athletic sharks. They are known for slaying their prey with their huge tails and are famous for special jumping techniques and behavior called "breaching" where they jump out of the water and into the air.
While hunting, they launch themselves with their whjole body out of the water and perform wild turns. They love to hunt schools of fish in the open Ocean waters and prefer Tuna, Mackerels, and someties go after certain breads of Seabirds. As with so many other aspects of this mysterious shark, the reproductive behavior is not well explored. We do know that they are ovoviviparous, which means that eggs evolve in the uterus until birth.
In general, they give birth to 2 to 5 pups at a time and the pups normally have a length of 120 to 160cm (47 to 63 inches). There is a special phenomenon called "oophagy" in the womb. The pups actually leave their eggs, still in the womb, and feed themselves with all the unfertilized eggs. The largest threat to the Thresher Shark is human fishing. Many fisherman catch them for sport, while others catch them for their fins, liver oil, tails, and flesh. Due to recent population depletion, new laws are being inacted to help protect this species from upsetting the fragile balance of the marine ecosystem, especially since these sharks have a low reproductive rate as compared to other sharks. This species poses very little threat to humans. The largest threat of injury is divers getting hit with the enormous tail. Attacks of any kind on humans are almost unheard of.

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Reef Shark

Beauty Of Animal | Reef Shark | While scientists are still trying to determine exactly how many of theses species exist, we do know that many of these sharks lose their lives from getting caught in fishing nets. Not only does it significantly reduce their population, it compromises the fragile ecosystem around coral reefs. Many new laws and regulations are being put into place to protect this ever important fish.
They are a larger threat to reef divers than any other shark and are considered to be moderately dangerous to humans. Usually, Grey and Silvertip Reef pose the biggest problems to divers, especially in the presence of food. Their aggression increases when they leave the safety of coral reefs and head into open waters. The vast majority of attacks from this shark are non-fatal and usually results from the shark feeling threatened.
As you can imagine, these fish love the tropical and subtropical water at coral reefs. They are mostly found in the Indian and Pacific Oceans as well as in Japanese Waters and the Mediterranean Sea. Normally, they are seen in shallow water near the surface and don't seem to go deeper than 80 meters (260 feet). They hunt squids, crabs, lobsters, shrimps, and every type of reef fish. What's interesting is their specific technique. They have found a way to "herd" their pray against reef faces.
This species is viviparous, which means the "pup" develops inside the mother, similar to the way human babies are developed. The pregnancy period is about 1 year and they typically don't give birth to more than 5 pups at once. The average size of a pup is 120 to 160cm (4 to 5 feet). Pup sharks reach maturity after about 5 to 6 years of age.

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