Agriculture
Got Milk? How?
Vitamin D-licious Mushrooms
Hungry bug seeks hot meal
Amphibians
Bullfrogs
Salamanders and Newts
Toads
Animals
Putting a Mouse on Pause
Walktopus
Copybees
Behavior
Sugar-pill medicine
The Smell of Trust
Taking a Spill for Science
Birds
Robins
Cassowaries
Pelicans
Chemistry and Materials
Silk’s superpowers
Moon Crash, Splash
Revving Up Green Machines
Computers
It's a Small E-mail World After All
New twists for phantom limbs
Middle school science adventures
Dinosaurs and Fossils
Digging Dinos
Big Fish in Ancient Waters
Winged Insects May Go Way Back
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
A Volcano Wakes Up
Rodent Rubbish as an Ice-Age Thermometer
Weird, new ant
Environment
Food Web Woes
Watching for Wildfires in Yellowstone
Little Bits of Trouble
Finding the Past
Sahara Cemetery
Writing on eggshells
Untangling Human Origins
Fish
Catfish
Mako Sharks
Bass
Food and Nutrition
Healing Honey
The mercury in that tuna
Chocolate Rules
GSAT English Rules
Pronouns
Whoever vs. Whomever
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT stars reap scholarship glory
GSAT Scholarship
GSAT Mathematics
42,000 students will sit for the GSAT Exam in two weeks
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Play for Science
Human Body
A Better Flu Shot
Music in the Brain
What the appendix is good for
Invertebrates
Sea Urchin
Nautiluses
Crabs
Mammals
Ferrets
Foxes
Primates
Parents
Choosing a Preschool: What to Consider
Raise a Lifelong Reader by Reading Aloud
How children learn
Physics
Speedy stars
Dreams of Floating in Space
Electric Backpack
Plants
Bright Blooms That Glow
When Fungi and Algae Marry
A Giant Flower's New Family
Reptiles
Komodo Dragons
Copperhead Snakes
Asp
Space and Astronomy
Baby Star
A Whole Lot of Nothing
Phantom Energy and the Big Rip
Technology and Engineering
Toy Challenge
Spinach Power for Solar Cells
Model Plane Flies the Atlantic
The Parts of Speech
Pronouns
Countable and Uncountable Nouns
What is a Noun
Transportation
Seen on the Science Fair Scene
Where rivers run uphill
Revving Up Green Machines
Weather
Polar Ice Feels the Heat
Where rivers run uphill
In Antarctica watch the heat (and your step)
Add your Article

How to Silence a Cricket

Among the things that come to mind when thinking about night are darkness, the moon, bedtime, and, in many places, chirping crickets. The list may soon get shorter in the lowlands on the Hawaiian island of Kauai, where flies have targeted a type of cricket that originally came to Hawaii from the western Pacific. Only male crickets chirp. They have special parts on their wings that, when scraped against each other, make a noise. In the 1990s, a certain type of fly began hunting Polynesian field crickets found on Kauai, says Marlene Zuk of the University of California, Riverside. These flies implant their babies in the bodies of crickets. The larvae use the crickets as food, and the crickets eventually die. Because male crickets make so much noise, they're easy to locate and suffer the most. So, within 5 years, the male crickets stopped chirping almost entirely, Zuk says. By 2003, the cricket population had started increasing again, she reports, but only a few of the males had wings with chirping parts that still worked. "What surprises me most is that the cricket song went away so fast," says Ron Hoy of Cornell University, who also studies flies and crickets. The change is an example of natural selection, which is part of the process of evolution. In this case, chirping was a bad quality for a cricket to have on Kauai, and cricket numbers were dropping. A gene or two happened to change, or mutate, so that the cricket wing couldn't chirp anymore. In some places, this change would have doomed the mutated crickets. But on Kauai, faced with deadly flies that could zero in on the sound, the mutated crickets thrived and passed the changes on to their young. Now, these silent crickets are the main type of cricket on the island. Unfortunately for male crickets, their only way of attracting females is by chirping. For now, the silent males cluster around the few remaining chirpers in order to meet female crickets.—E. Jaffe

How to Silence a Cricket
How to Silence a Cricket








Designed and Powered by HBJamaica.com™