Agriculture
Cleaning Up Fish Farms
Growing Healthier Tomato Plants
Watching out for vultures
Amphibians
Bullfrogs
Salamanders
Frogs and Toads
Animals
Koalas, Up Close and Personal
Fishy Sounds
Insects Take a Breather
Behavior
Girls are cool for school
Swine flu goes global
The chemistry of sleeplessness
Birds
Waterfowl
Cassowaries
Pelicans
Chemistry and Materials
Earth from the inside out
Bang, Sparkle, Burst, and Boom
Sticking Around with Gecko Tape
Computers
The science of disappearing
Nonstop Robot
A Light Delay
Dinosaurs and Fossils
Fossil Fly from Antarctica
A Really Big (but Extinct) Rodent
Dino Flesh from Fossil Bone
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Snowflakes and Avalanches
Digging into a Tsunami Disaster
Rocking the House
Environment
Fishing for Fun Takes Toll
A 'Book' on Every Living Thing
Groundwater and the Water Cycle
Finding the Past
Prehistoric Trips to the Dentist
An Ancient Childhood
Meet your mysterious relative
Fish
Perches
Tilapia
Lampreys
Food and Nutrition
Packing Fat
Chocolate Rules
The Essence of Celery
GSAT English Rules
Who vs. Whom
Subject and Verb Agreement
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exam Preparation
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Math is a real brain bender
Prime Time for Cicadas
A Sweet Advance in Candy Packing
Human Body
Kids now getting 'adult' disease
A Long Trek to Asia
Opening a Channel for Tasting Salt
Invertebrates
Tapeworms
Invertebrates
Horseshoe Crabs
Mammals
Chimpanzees
Hoofed Mammals
Woolly Mammoths
Parents
How children learn
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
Physics
Project Music
Extra Strings for New Sounds
Road Bumps
Plants
Plants Travel Wind Highways
Assembling the Tree of Life
Farms sprout in cities
Reptiles
Boa Constrictors
Snapping Turtles
Chameleons
Space and Astronomy
A Whole Lot of Nothing
Rover Makes Splash on Mars
Zooming In on the Wild Sun
Technology and Engineering
Spinach Power for Solar Cells
Musclebots Take Some Steps
Shape Shifting
The Parts of Speech
Adjectives and Adverbs
What is a Verb?
Countable and Uncountable Nouns
Transportation
Troubles with Hubble
Morphing a Wing to Save Fuel
Seen on the Science Fair Scene
Weather
The Best Defense Is a Good Snow Fence
Weekend Weather Really Is Different
In Antarctica watch the heat (and your step)
Add your Article

Electric Eel

The electric eel (Electrophorus electricus) is a species of fish capable of generating powerful electric shocks of up to 650 volts, which it uses for both hunting and self-defense. Despite its name it is not an eel at all but rather a knifefish! Electric eels can grow up to 2.5 m (about 8.2 feet) in length and 20 kg (about 44 pounds) in weight, although 1 m specimens are more common. A typical example will have an elongated, cylindrical body bearing only a few scales, a flattened head, and an overall dark grayish green color shifting to yellowish on the bottom. Who Needs Gills? The electric eel may be found in the basins of both the Amazon River and Orinoco River, as well as the surrounding areas. They tend to live on muddy bottoms in calm water and are obligate air-breathers; rising to the surface every 10 minutes or so, the animal will gulp air before returning to the bottom. Nearly 80% of the oxygen used by the fish is taken in this way. Good Hearing: Scientists have been able to determine through experimental information that E. electricus has a well developed sense of sound. They have a Weberian apparatus that connects the ear to the swim bladder, which greatly enhances their hearing capability. Bathing Battery: The electric eel generates its characteristic electrical pulse in a manner similar to a battery, in which stacked plates produce an electrical charge. In the electric eel, some 5,000 to 6,000 stacked electroplaques are capable of producing a shock at up to 500 volts and 1 ampere of current (500 watts). There are reports of animals producing larger voltages, but the typical output is sufficient to stun or deter virtually any other animal. Juveniles produce smaller voltages (about 100 volts). Electric eels are capable of varying the intensity of the electrical discharge, using lower discharges for "hunting" and higher intensities are used for stunning prey, or defending themselves. When agitated, it is capable of producing these intermittent electrical shocks over a period of at least an hour without signs of tiring. The exact mechanism remains largely unknown. The Sachs organ, a stack of electroplaques, is the primary source of communication among E. electricus. This organ transmits a weak signal, only about 10V in amplitude. These signals are used in communication as well as orientation, and are used to find prey and locate and choose a mate. Although the eels are common in their range and popular draws for public aquaria, the eel's habit of delivering shocks, even when gently handled, means that they are too dangerous for most amateurs to try to keep at home. Moreover, the animals grow very large, and are impossible to maintain for all but the most dedicated of keepers. Countries such as Australia strictly forbid the keeping of electric eels, for fear that they could escape into the wild and become a public hazard. The species is so unusual that it has been reclassified several times. Originally a species in Gymnotus, it was later given its own family Electrophoridae, and then demoted to a genus of Gymnotidae alongside Gymnotus. Similar species are the electric catfish (Malapterurus electricus) and the electric ray (Torpedo mamorata, T. californica).

Electric Eel
Electric Eel








Designed and Powered by HBJamaica.com™