Agriculture
Silk’s superpowers
Watering the Air
Protecting Cows—and People—from a Deadly Disease
Amphibians
Toads
Salamanders
Tree Frogs
Animals
The History of Meow
Pothole Repair, Insect-style
Life on the Down Low
Behavior
Reading Body Language
A brain-boosting video game
Making light of sleep
Birds
Eagles
Cassowaries
Storks
Chemistry and Materials
These gems make their own way
The memory of a material
A Spider's Silky Strength
Computers
Secrets of an Ancient Computer
It's a Small E-mail World After All
New eyes to scan the skies
Dinosaurs and Fossils
A Living Fossil
Dino Flesh from Fossil Bone
Downsized Dinosaurs
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Earth from the inside out
Giving Sharks Safe Homes
Watering the Air
Environment
Easy Ways to Conserve Water
Acid Snails
Island Extinctions
Finding the Past
Prehistoric Trips to the Dentist
Stonehenge Settlement
The Puzzle of Ancient Mariners
Fish
Whale Sharks
Carp
Trout
Food and Nutrition
The Color of Health
Moving Good Fats from Fish to Mice
Yummy bugs
GSAT English Rules
Problems with Prepositions
Adjectives and Adverbs
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
42,000 students will sit for the GSAT Exam in two weeks
GSAT Exam Preparation
GSAT Mathematics
How a Venus Flytrap Snaps Shut
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
10 Common Mistakes When Preparing for the GSAT Math Test
Human Body
Germ Zapper
A Fix for Injured Knees
Taking the sting out of scorpion venom
Invertebrates
Crawfish
Snails
Giant Clam
Mammals
Marsupials
Whales
Weasels and Kin
Parents
Raise a Lifelong Reader by Reading Aloud
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
Physics
Project Music
Einstein's Skateboard
Thinner Air, Less Splatter
Plants
Fastest Plant on Earth
Cactus Goo for Clean Water
City Trees Beat Country Trees
Reptiles
Snakes
Alligators
Chameleons
Space and Astronomy
Dark Galaxy
World of Three Suns
A Smashing Display
Technology and Engineering
A Light Delay
Are Propellers Fin-ished?
Shape Shifting
The Parts of Speech
Pronouns
Adjectives and Adverbs
What is a Noun
Transportation
Morphing a Wing to Save Fuel
Troubles with Hubble
Middle school science adventures
Weather
Either Martians or Mars has gas
Science loses out when ice caps melt
Earth's Poles in Peril
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™