6 results found.
... Science Frontiers ONLINE No. 116: Mar-Apr 1998 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects High-Flying Catfish Anomalies crop up in out-of-the-way places and unusual publications. A radio amateur (Dave, K1WHS) noticed that his 432-MHz beam was higher tha normal. Checking his tall antenna, he saw something dangling from the horizontal elements. It turned out to be a good-sized, desiccated catfish. Dave's antenna is 60 feet high and miles from any lake or stream. (Anonymous; QST , p. 21, February 1998. Cr. L.M . Nash) From Science Frontiers #116, MAR-APR 1998 . 1998-2000 William R. Corliss ...
Terms matched: 1 - Score: 69 - 15 May 2017 - URL: /sf116/sf116p16.htm
... 's Smile," like all his writing, is thought-provoking. The essay goes far beyond the happy flamingo. It is about unusual adaptations in nature, as illustrated by three inverted or partially inverted creatures. The flamingo is a filter-feeder that strains food out of the water with its bill while its head is upside-down. The flaming's bill and tongue are (and must be ) radically different from those of other birds to succeed in this strange behavior. One type of jellyfish, rather than swimming around with its pulsating bell on top, plunks itself upside-down on the bottom and uses its bell as a suction cup to anchor itself. It then shoots poisonous darts attached to strings of mucous at passing targets and reels them in. Some African catfish graze on algae on the undersides of water plants. They swim upside down all the time and display a reversed color scheme, being black on the bottom and light on top. Gould employs these three examples to argue that changes in animal behavior must have preceded the many changes in form, function, color, etc. that make upside down living profitable. In other words, the proto-flamingos tried feeding with their heads upside down; and it didn't work too well. But "nature" responded with a series of random biological changes, some of which were just what was needed for efficient upside down feeding. In this way, we end up with admirably adapted, inverted flamingos, jellyfish, and catfish. (Gould, Stephen Jay; "The Flamingo' ...
Terms matched: 1 - Score: 29 - 15 May 2017 - URL: /sf039/sf039p08.htm
... Science Frontiers ONLINE No. 112: Jul-Aug 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects From The Depths Of The Amazon Trawls lowered between 9 and 45 meters into the Amazon's muddy waters have brought up many bizarre fish never seen before. J. Lundberg and his team from the University of Arizona found two species of electric fish that subsist entirely on the tails of other electric fish. Some of the catfish are armorplated; others are transparent; another catfish is only 8 millimeters (1 /3 inch) long. Most interesting to taxonomists will be two separate species of electric fish that can be told apart only by the different patterns of electrical discharges they generate! What will trawls capture in the Rio Negro which is about 100 meters deep in one place? (Bille, Matthew A.; "Recent Discoveries: Fishing in South America," Exotic Zo ology , 4:1 , March/April 1997. Publication address: 3405 Windjammer Dr., Colorado Springs, CO 80920.) From Science Frontiers #112, JUL-AUG 1997 . 1997-2000 William R. Corliss ...
Terms matched: 1 - Score: 27 - 15 May 2017 - URL: /sf112/sf112p06.htm
... Science Frontiers ONLINE No. 116: Mar-Apr 1998 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Mystery of the stoned pharaoh Those ancient greek pramids An anasazi reservoir Astronomy Microscopic life on mars? Plant life on mars? "A FANTASTIC RESULT!" Ten strikes against the big bang Biology Eyeless vision The ultimate in unisex Eco-darwinism: diffuse individuals Monarch compasses Geology Miles of mush Global cooling has begun! Geophysics Target: greenland Ball lightning collides with car Earthquake weather High-fling catfish More on the mekong mystery Dr fogs and bright nights Physics G: THE EMBARRASSING CONSTANT OF NATURE Unclassified Evolution of cyberlife ...
Terms matched: 1 - Score: 15 - 15 May 2017 - URL: /sf116/index.htm
... Science Frontiers ONLINE No. 126: Nov-Dec 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Swimming Up The Wrong Streams Of course, most freshwater fish do swim upstream in the usual way, but not the candiru. It is partial to very specific streams. This small, slim, scaleless species of catfish inhabits the Amazon where it preys on other fish, often by invading their gills and feasting on blood and tissue. They also aim much higher on evolution's ladder: they are the only known vertebrate parasites of humans. It is when they prey upon humans that they swim up the wrong streams -- at least their victims think so! Their technique is simple. They detect human urine released by swimmers and follow it right to the source. They don't stop there but insert themselves right into the penis and keep going, sometimes all the way to the bladder. Once inside the penis they erect their spines and cannot be extracted except by surgery. Left alone, they are not only excruciating to the unwise bather but can eventually be fatal. Surgeons have successfully extracted them from the bladder, but in remote areas penis amputation is the only answer! (Warren, Nicholas; "In Mare Internum," Fortean Times, p. 14, September 1999. Title translation: "Within the Inner Sea.") From Science Frontiers #126, NOV-DEC 1999 . 1999-2000 William R. Corliss ...
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... 132:53, 1987) on the electrostatic dispersal of fungal spores, A.F . Kah describes another use of electricity by plants: "In a similar manner, the same-charged fluffy fibers of milkweed (and presumably other fuzzy seeds) spring apart from electrostatic repulsion when the fibers have dried out. This explosive fiber spreading at the right moment is beautiful and fascinating to watch, and is certainly effective in getting them airborne!" (Kah, Ann F.; "Fluffy Explosion," Science News, 132:163, 1987.) Comment. See SF#30 for an item on heat production in plants. It must have been a serendipitous series of tiny random mutations that led to this electrostatic phenomenon. Of course, we can say the same for electric catfish, too. From Science Frontiers #54, NOV-DEC 1987 . 1987-2000 William R. Corliss ...
Terms matched: 1 - Score: 14 - 15 May 2017 - URL: /sf054/sf054b08.htm
