Wednesday, January 23, 2013

Bobbit Worm

Today I will show an animal wonderfully terrifying. An animal that could easily have been the protagonist of a movie called "Worms from hell". Called Bobbit Worm (Eunice aphroditois) and is a species of the genus Eunice (a family of large worms).

Although it is a predator that can be found in virtually all the world's seas, the species, aphroditois Eunice, prefers warm waters , especially the Indo-Pacific waters.

The form of hunting this animal: the body is buried in the sandy bottom except the head and wait for their prey to pass close enough to stimulate their antennas and so catch it.

This worm really is omnivorous, and also to hunt small fish and crustaceans with its ferocious jaws and sharp-tentacles, also eat algae.

If we saw a Bobbit Worm while we bathe in the sea, the best we can do is get away without getting nervous. Normally, this worm does not attack and often flee, but if they feel threatened they can bite and take a piece of meat with it. Moreover, if we step one without realizing (that may be because he is buried), it inject us via the prongs that run throughout the body, a poison that will produce severe pain and foot paralyze us. Do not underestimate this animal, besides being poisonous, quite big, can measure up to 4 meters.

Monday, January 14, 2013

Sword-billed Hummingbird.

In every ecosystem there are different relationships between living creatures, from bacteria to the top predator that sits on top of the trophic chain. When, for whatever reason, a species is extirpated, endangered the interaction of all individuals in the ecosystem.

But not all species are just as essential, and although all have a role, there are some that are more importances others. The case of Sword-billed Hummingbird is a clear example of a species must.

The main feature of Sword-billed hummingbird (Ensifera ensifera) is that it has the longer beak, in which all the birds in the world, in relation to the body. The peak measured the same as the length of the body that has such a long beak, it is no casuality.

As we know, generally hummingbirds feed on a product superenergy, the nectar of flowers. They have to enter the peak inside the flower for be done with the nectar, while the pollen of flowers were deposited on their heads to when a new flower pollinate.

Well, some flowers have been very demanding of their pollinators, needed a pollinator (a hummingbird in this case), to eat the nectar while pollen is impregnated. The easiest way was to extend the floral pendulum: if the hummingbird enters the head from inside the flower to get the nectar, their pollen impregnate feathers, enter the peak itself, is more difficult to impregnate. As they were stretching peaks hummingbirds also lengthened the pendulums of flowers. This, over the centuries, caused very long peaks as the sword-billed hummingbird and floral tubes also very long.

These specialized flowers, we can find Passiflora Datura or Passiflora mixta. These are elongated flowering plants so that only the Sword-billed Hummingbird can ponilizar the fact, it is believed that if the Sword-billed Hummingbird disappeared, also these plants poof and disappear ... specialization may be the cause of its demise. Although thankfully, we are certain that the Sword-billed Hummingbird is not endangered .... Some plants chose well to its pollinator.

Friday, January 4, 2013

Saiga antelope or Saiga tatarica.

This animal, a little disproportionate, is the protagonist of one of the largest migrations that occur throughout the animal world. A migration comparable to that produced by millions of wildebeest and zebras in central Africa.

Is an animal the size of a sheep, a herbivore that feeds on plants harder, poor and stale to be found in the Russian steppe. About 50 kg in weight, 70 cm in height and more than 1 meter long. The most notable feature is his nose: broad, long and mobile, similar to tapirs. The nose is a perfect adaptation to climate. In winter heats the air before it is introduced into the lungs. However, in summer, is able to filter and retain windblown dust from the steppes. Another adaptation to cold is its coat, tan and short in summer, but long, thick and white in winter. A survivor of the last glaciation.

Among their predators are wolves, foxes, birds of prey and large prey.

The last migration are being more and more reduced, are currently believed to not more than 30,000 individuals. Animals passing through areas that create the effect funnel with a width less than 5 km. Bridges that connect two areas not yet occupied by man.

Apart from the destruction of their habitat, this animal is being hunted out of control to get their horns. Horns are an ingredient that has a certain value in traditional Chinese medicine, already the horns are replacing other ingredient even more scarce, rhino horn.

He is currently in critical danger of extinction.