Posted by Wildlife
Conservation Society on October 24, 2012
By Jim Breheny
This summer marked the sad and
untimely death of the most famous tortoise in the world, Lonesome George. When
speaking of turtles and tortoises time, of course, is a relative thing. At an
estimated 100 years of age, this Galapagos native was still relatively young by
the standards of his genus. Nevertheless, with his demise on June 24, the Pinta
Island tortoise is believed to have officially gone extinct.
George and his fellow Pinta
Island tortoises fell victim to centuries of relentless exploitation and
callous interference by humans into the fantastically-adapted seascape so
wonderfully documented by the great naturalist Charles Darwin nearly 200 years
ago. Mariners removed giant tortoises from the islands to serve as food on long
voyages while introduced goats thrived in the Galapagos on the vegetation that
previously sustained tortoises like George.
Sadly, George’s story is not
unique. The armored shells of turtles and tortoises represent one of the most
uniquely adapted vertebrate body plans and have served to protect these animals
since prehistoric times. But evolution’s best defense mechanisms provide little
protection against humankind’s willful determination to slaughter these
incredible creatures. In our modern globally-integrated economy, turtle hunting
will never be a sustainable industry. Turtles neither mature fast enough nor
produce enough offspring to withstand even moderate levels of continual
harvesting.
For decades, Wildlife
Conservation Society scientists like the late John Behler and Brian Horne have
crisscrossed the globe to study rare turtles and tortoises and prevent their
demise. Dr. Horne, like other experts in the field, believes that the
international trade of wild-caught turtles is the main factor in driving more
than half of the 330 species of turtles close to extinction. On a percentage
basis, turtles as a group are now more at risk of extinction than birds,
mammals, or amphibians.
Far too often, we find a
greater number and diversity of turtles in markets (typically stacked in
crowded crates, sitting in their own filth in seedy shops and back alleyways)
than we do in the wild. The rise of Internet commerce as a major market for the
illicit sale of protected turtle species and the rapidly emerging economies of
South and Southeast Asia are endangering the world’s turtles at an
unprecedented rate.
The bulk of the world’s
wild-caught turtle trade is to serve the demand in China for human consumption
and their perceived medicinal benefits, and to supply the international exotic
pet trade. The scope of this trade is not measured in numbers of
individuals but in tons of live turtles that are collected and sold on a daily
basis. During a three-day survey of southern Chinese markets in late 2011,
WCS was able to document that the species for sale represented over a third of
the world’s turtle diversity. Confronted by the magnitude of the trade, it
is hard to imagine there can be a single turtle or tortoise left in the wild at
current rates of exploitation.
The impact of these markets is
truly global, as we found turtles from every continent where they occur and
many that are listed on Appendix I of the Convention on International Trade in
Endangered Species of Wild Fauna and Flora (CITES), the highest level of trade
protection, regulating commercial trade of a species. Loopholes in laws and
failures in enforcement facilitate the trade of huge numbers of these
critically endangered species.
In 2011, the Turtle
Conservation Coalition identified the 25 most endangered turtles, two-thirds of
these being found only in Asia and heavily impacted by trade in and to
China. Most of these rarest species are estimated to have fewer than 1,000
animals remaining in the wild, with some species able to be counted in the tens
or single digits. However, WCS believes that turtle species can be saved
from extinction through field conservation efforts and captive breeding.
With the goal of preserving
wild turtle populations and preventing further extinctions, we have made an
institutional commitment to reduce the illegal trade in these animals. As
a part of this effort, we will work to ensure that there are adequate protected
areas for maintaining self-sustaining populations of the world’s most
endangered turtles.
With our partners the Turtle
Survival Alliance, the Turtle Conservancy, and the Asian Turtle Program, we are
also developing captive breeding projects both within the US and abroad. The
end goal of these breeding programs is to be able to return offspring of these
assurance colonies into the wild.
For turtle species numbering
in the hundreds or less, we may only have a few years before we lose these
marvels of evolution forever. We have the ability to make a difference,
and we have the ethical responsibility to respond. We must act now to
ensure that future generations have the opportunity to spot a turtle in the
wild and that no species finds itself — like George — reduced by human greed or
mismanagement to one last, lonesome representative.
Jim Breheny is Executive Vice
President & General Director for the Wildlife Conservation Society’s Zoos
and Aquarium and Jonathan Little Cohen Director of the Bronx Zoo.
Go to original
website http://newswatch.nationalgeographic.com/2012/10/24/saving-other-turtles-from-georges-lonesome-fate/ for
four great photos of turtles near the edge.
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