Agriculture
Growing Healthier Tomato Plants
Silk’s superpowers
Getting the dirt on carbon
Amphibians
Bullfrogs
Salamanders and Newts
Newts
Animals
A Whale's Amazing Tooth
Bee Heat Cooks Invaders
Monkeys Count
Behavior
Ear pain, weight gain
Monkeys in the Mirror
How Much Babies Know
Birds
Waterfowl
Swifts
Lovebirds
Chemistry and Materials
Bandages that could bite back
The hungry blob at the edge of the universe
Makeup Science
Computers
Music of the Future
It's a Small E-mail World After All
The Book of Life
Dinosaurs and Fossils
Battling Mastodons
Mammals in the Shadow of Dinosaurs
Message in a dinosaur's teeth
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
Deep History
Recipe for a Hurricane
Flower family knows its roots
Environment
Inspired by Nature
The Down Side of Keeping Clean
Ready, unplug, drive
Finding the Past
Oldest Writing in the New World
A Big Discovery about Little People
Chicken of the Sea
Fish
A Jellyfish's Blurry View
Mahi-Mahi
Megamouth Sharks
Food and Nutrition
Turning to Sweets, Fats to Calm the Brain
Symbols from the Stone Age
How Super Are Superfruits?
GSAT English Rules
Whoever vs. Whomever
Problems with Prepositions
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
2014 GSAT Results for Jamaican Kids
GSAT Scholarship
GSAT Exams Jamaica Scholarships
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Exam Preparation
GSAT Mathematics
Deep-space dancers
42,000 students will sit for the GSAT Exam in two weeks
It's a Math World for Animals
Human Body
Teen Brains, Under Construction
The tell-tale bacteria
Cell Phones and Possible Health Hazards
Invertebrates
Bees
Grasshoppers
Earthworms
Mammals
Llamas
Beavers
Pomeranians
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
Expert report highlights the importance to parents of reading to children!
Physics
The Particle Zoo
Black Hole Journey
Project Music
Plants
Tracking the Sun Improves Plant Pollen
Surprise Visitor
Hungry bug seeks hot meal
Reptiles
Snakes
Alligators
Turtles
Space and Astronomy
Black Holes That Burp
No Fat Stars
Older Stars, New Age for the Universe
Technology and Engineering
Are Propellers Fin-ished?
Crime Lab
Reach for the Sky
The Parts of Speech
What is a Preposition?
Adjectives and Adverbs
What is a Verb?
Transportation
Revving Up Green Machines
Where rivers run uphill
Reach for the Sky
Weather
Antarctica warms, which threatens penguins
The solar system's biggest junkyard
Polar Ice Feels the Heat
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™