Agriculture
Chicken Eggs as Drug Factories
Cleaning Up Fish Farms
Growing Healthier Tomato Plants
Amphibians
Newts
Salamanders
Toads
Animals
Vent Worms Like It Hot
Thieves of a Feather
Big Squid
Behavior
Face values
Mind-reading Machine
Baby Talk
Birds
Kookaburras
Emus
Flamingos
Chemistry and Materials
Meteorites may have sparked life on Earth
Pencil Thin
The hungry blob at the edge of the universe
Computers
Troubles with Hubble
A New Look at Saturn's rings
Music of the Future
Dinosaurs and Fossils
Have shell, will travel
A Big, Weird Dino
Ferocious Growth Spurts
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
Flower family knows its roots
Slip Slidin' Away—Under the Sea
Pollution at the ends of the Earth
Environment
Nanosponges Soak Up Pollutants
The Down Side of Keeping Clean
To Catch a Dragonfly
Finding the Past
Settling the Americas
Words of the Distant Past
Your inner Neandertal
Fish
Hammerhead Sharks
Lungfish
A Jellyfish's Blurry View
Food and Nutrition
Symbols from the Stone Age
Turning to Sweets, Fats to Calm the Brain
Eat Out, Eat Smart
GSAT English Rules
Order of Adjectives
Capitalization Rules
Who vs. Whom
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
GSAT Scholarship
Results of GSAT are in schools this week
GSAT Mathematics
Setting a Prime Number Record
Math Naturals
Math of the World
Human Body
Taste Messenger
Flu Patrol
From Stem Cell to Any Cell
Invertebrates
Horseshoe Crabs
Flatworms
Black Widow spiders
Mammals
Miscellaneous Mammals
Whales
Beavers
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
How children learn
Physics
Dreams of Floating in Space
Electric Backpack
Powering Ball Lightning
Plants
Fastest Plant on Earth
Assembling the Tree of Life
Surprise Visitor
Reptiles
Sea Turtles
Geckos
Turtles
Space and Astronomy
Dark Galaxy
Catching a Comet's Tail
Cousin Earth
Technology and Engineering
Bionic Bacteria
Searching for Alien Life
Crime Lab
The Parts of Speech
Problems with Prepositions
Adjectives and Adverbs
What is a Noun
Transportation
Where rivers run uphill
Middle school science adventures
Charged cars that would charge
Weather
Earth's Poles in Peril
In Antarctica watch the heat (and your step)
Catching Some Rays
Add your Article

Longer lives for wild elephants

Most people think of zoos as safe havens for animals, where struggles such as difficulty finding food and avoiding predators don’t exist. Without such problems, animals in zoos should live to a ripe old age. But that may not be true for the largest land animals on Earth. Scientists have known that elephants in zoos often suffer from poor health. They develop diseases, joint problems and behavior changes. Sometimes, they even become infertile, or unable to have babies. To learn more about how captivity affects elephants, a team of international scientists compared the life spans of female elephants born in zoos with female elephants living outdoors in their native lands. Zoos keep detailed records of all the animals in their care, documenting factors such as birth dates, illnesses, weight and death. These records made it possible for the researchers to analyze 40 years of data on 800 African and Asian elephants in zoos across Europe. The scientists compared the life spans of the zoo-born elephants with the life spans of thousands of female wild elephants in Africa and Asian elephants that work in logging camps, over approximately the same time period. The team found that female African elephants born in zoos lived an average of 16.9 years. Their wild counterparts who died of natural causes lived an average of 56 years – more than three times as long. Female Asian elephants followed a similar pattern. In zoos, they lived 18.9 years, while those in the logging camps lived 41.7 years. Scientists don’t yet know why wild elephants seem to fare so much better than their zoo-raised counterparts. Georgia Mason, a biologist at the University of Guelph in Canada who led the study, thinks stress and obesity may be to blame. Zoo elephants don’t get the same kind of exercise they would in the wild, and most are obese. Elephant social lives are also much different in zoos than in the wild, where they live in large herds and family groups. Another finding from the study showed that Asian elephants born in zoos were more likely to die early than Asian elephants captured in the wild and brought to zoos. Mason suggests stress in the mothers in zoos might cause them to have babies that are less likely to survive. The study raises some questions about acquiring more elephants to keep in zoos. While some threatened and endangered species living in zoos reproduce successfully and maintain healthy populations, that doesn’t appear to be the case with elephants. “Currently, zoos are net consumers of elephants, not net producers,” Mason says.

Longer lives for wild elephants
Longer lives for wild elephants








Designed and Powered by HBJamaica.com™