Agriculture
Flush-Free Fertilizer
Treating peanut allergy bit by bit
Cleaning Up Fish Farms
Amphibians
Newts
Poison Dart Frogs
Toads
Animals
Mating Slows Down Prairie Dogs
Lucky Survival for Black Cats
Insects Take a Breather
Behavior
Supersonic Splash
Fish needs see-through head
The Colorful World of Synesthesia
Birds
Storks
Hummingbirds
Kookaburras
Chemistry and Materials
Moon Crash, Splash
Silk’s superpowers
Putting the Squeeze on Toothpaste
Computers
Graphene's superstrength
Music of the Future
Programming with Alice
Dinosaurs and Fossils
Early Birds Ready to Rumble
South America's sticky tar pits
Hunting by Sucking, Long Ago
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
Vitamin D-licious Mushrooms
A Volcano Wakes Up
A Global Warming Flap
Environment
Antarctica warms, which threatens penguins
A Change in Leaf Color
Plastic Meals for Seals
Finding the Past
Digging Up Stone Age Art
Sahara Cemetery
Unearthing Ancient Astronomy
Fish
Megamouth Sharks
Carp
Catfish
Food and Nutrition
Healing Honey
Chew for Health
Packing Fat
GSAT English Rules
Problems with Prepositions
Capitalization Rules
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
Tarrant High overcoming the odds
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
GSAT Exam Preparation
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
Math of the World
GSAT Practice Papers | GSAT Mathematics | Maths
10 Common Mistakes When Preparing for the GSAT Math Test
Human Body
Sun Screen
Workouts: Does Stretching Help?
Football Scrapes and Nasty Infections
Invertebrates
Dust Mites
Wasps
Millipedes
Mammals
Gazelle
Gray Whale
Miscellaneous Mammals
Parents
How children learn
What Not to Say to Emerging Readers
Expert report highlights the importance to parents of reading to children!
Physics
Echoes of a Stretched Egg
IceCube Science
Powering Ball Lightning
Plants
White fuzzy mold not as friendly as it looks
Tracking the Sun Improves Plant Pollen
The algae invasion
Reptiles
Crocodilians
Snapping Turtles
Lizards
Space and Astronomy
A Planet's Slim-Fast Plan
Cool as a Jupiter
Slip-sliding away
Technology and Engineering
Switchable Lenses Improve Vision
Musclebots Take Some Steps
Algae Motors
The Parts of Speech
Problems with Prepositions
What is a Verb?
Adjectives and Adverbs
Transportation
Charged cars that would charge
Flying the Hyper Skies
Tinkering With the Basic Bike
Weather
Science loses out when ice caps melt
Arctic Melt
The solar system's biggest junkyard
Add your Article

Smelly Traps for Lampreys

Sea lampreys might be nobody's best friend. The snakelike fish are parasites. They latch onto other fish and suck their blood. Sea lampreys are also invaders. About a century ago, they arrived in the Great Lakes. By the 1940s, they had nearly wiped out many populations of native fish. Since then, the Great Lakes Fishery Commission has spent many millions of dollars on attempts to control lampreys in the Great Lakes. The fish are a hearty bunch. Now, scientists from the University of Minnesota have found a new way to keep the destructive creatures at bay. They're tapping into a lamprey's sense of smell.As larvae, sea lampreys spend up to 20 years in freshwater streams, where they eat and grow. Then, nearing adulthood, they move to a larger body of water, where they feed off one fish after another, for about a year. Finally, they swim to streams to mate. After a few weeks of breeding and laying eggs, they die. Scientists have long suspected that lampreys follow the scent of each other's pheromones, or body chemicals, to find suitable streams for mating. To sort out which particular chemicals attract lampreys, the University of Minnesota researchers began with 8,000 liters (210 gallons) of water that had contained about 35,000 baby lamprey larvae. The scientists concentrated the liquid until they had just a few grams of gunk. They separated the gunk into individual chemical components, or compounds. Then, they tested each compound to see how lampreys responded to it. The study turned up three compounds that both affected the lamprey's sense of smell and attracted the fish. It was the first time that scientists have identified pheromones that affect migration in any vertebrate (animal with a backbone). After the researchers figured out which chemicals matter, they were able to create one of the compounds in the lab. If they can find a way to make the compound in large quantities, the scientists hope they'll be able to use it to attract lampreys away from their breeding grounds. This would prevent the lampreys from reproducing, which would reduce their numbers and their impact. Mimicking the lamprey's scent could be a cheap and efficient way to reclaim the Great Lakes from a pesky parasite.—E. Sohn

Smelly Traps for Lampreys
Smelly Traps for Lampreys








Designed and Powered by HBJamaica.com™