Word: worm
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This much is known: the disease is carried by a microscopic protozoan called Myxobolus cerebralis, whose spores are released when infected fish die. These spores are not in themselves harmful to trout. It is only after they have been ingested by inch-long Tubifex worms in the mud that the parasites become dangerous. In the worm's gut, the protozoan takes a new form: grappling-hook-shaped spore cases that when released from the worm, can invade the gills and skin of tiny rainbow fry. The infection eats away at the cartilage of young trout, leaving them deformed, discolored...
...that turn out to be useless." Since drugs sometimes arrive poorly labeled, often in a foreign language, errors do occur. Three years ago, 11 Lithuanian women were temporarily blinded by an improperly marked drug that local doctors thought was for a gynecological complaint. It turned out to be veterinary worm medicine...
...even as Wonderful Life was being published, the discovery of new Cambrian-era fossil beds in Sirius Passet, Greenland, and Yunnan, China, was stripping some of the weirdness from the wonders. Hallucigenia's impossibly pointed legs, for example, were unmasked as the upside-down spines of a prehistoric velvet worm. In similar fashion, Wiwaxia, some scientists think, is probably allied with living bristle worms. And the anomalocaridids - whose variety is rapidly expanding with further research - appear to be cousins, if not sisters, of the amazingly diverse arthropods...
...proliferation of wildly varying body plans during the Cambrian, scientists reason, therefore must have something to do with Hox genes. But what? To find out, developmental biologist Sean Carroll's lab on the University of Wisconsin's Madison campus has begun importing tiny velvet worms that inhabit rotting logs in the dry forests of Australia. Blowing bubbles of spittle and waving their fat legs in the air, they look, he marvels, virtually identical to their Cambrian cousin Aysheaia, whose evocative portrait appears in the pages of the Burgess Shale. Soon Carroll hopes to answer a pivotal question: Is the genetic...
...dive to the bottopm of the Challenger Deep. JAMSTEC engineers watched anxiously on a video screen, the robotic craft spent 35 min. at a depth of 35,798 ft.--2 ft. shy of Trieste's 1960 record. But during that brief visit, Kaiko saw a sea slug, a worm and a shrimp, proof that even the most inhospitable place on earth is home to a variety of creatures. Next winter Kaiko will return to the deep to look for more signs of life...