"Let no freedom be allowed to novelty, because it is not fitting that any addition should be made to antiquity. Let not the clear faith and belief of our forefathers be fouled by any muddy admixture." -- Pope Sixtus III
Thursday, July 05, 2012
The so-called zombie worms break down bone by excreting acid, according to research just presented at the Society for Experimental Biology's meeting in Salzburg, Austria.
It was previously unclear how the worms did it, since they lack any organs for "drilling," said researcher Sigrid Katz of the Scripps Institution of Oceanography in La Jolla, Calif.
The researchers found two different types of acid-secreting enzymes in the animal, Katz told OurAmazingPlanet. One of the enzymes, a proton pump, was abundant in the roots, the part of the worm that penetrates the bone.
The animals produce acid using the same basic mechanism as the human cells called osteoclasts involved in bone resorption, necessary for the continual turnover and reformation of bone.
Symbiotic bacteria allow the worms to digest fats and other materials within bones.
The worm's closest relatives, which also lack guts and mouths, live in deep-sea hydrothermal vents and rely on a different set of bacteria to allow them to survive in these hot and acidic conditions.
The worms, whose official genus name is Osedax, are about 1 inch (3 centimeters) long and were discovered on a whale carcass in 2002. But that's just the females. The males never make it past the larval stage and are about 1/20th of an inch (1 millimeter) long; hundreds of them may live inside a gelatinous tube covering part of the female. The male's sole purpose seems to be fertilizing the female's eggs, Katz said.
Ack! Zombie reproduction!
- First of all, the word is SEX, not GENDER. If you are ever tempted to use the word GENDER, don't. The word is SEX! SEX! SEX! SEX! For example: "My sex is male." is correct. "My gender is male." means nothing. Look it up. What kind of sick neo-Puritan nonsense is this? Idiot left-fascists, get your blood-soaked paws off the English language. Hence I am choosing "male" under protest.
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07/01 - 07/08
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