Wichita, Kansas
Associated Press
February 8, 2008
Two Komodo dragons have hatched at a Kansas zoo, apparently without fertilization by a male.
The dragons—both males—are believed to be the first in North America known to have hatched by parthenogenesis—reproduction without fertilization—which occurs naturally in some species, including invertebrates and lower plants. It happens more rarely in some vertebrates.
Two other known cases in which Komodo dragons hatched by parthenogenesis were at the London and Chester zoos in England in 2006. (See photo.)
The Sedgwick County Zoo in Wichita is having DNA testing done to document the mother's and the babies' genetic structure because of the remote chance that a male's sperm was stored on the female's body.
Komodo dragons are one of the few species capable of storing sperm, said Don Boyer, curator of reptiles and amphibians at the San Diego Zoo.
The Kansas zoo has had the new mother and one other female Komodo dragon since 1993, when they were less than a year old. They have been laying eggs since 2000.
"We never had a male dragon at the zoo. There were no tramps that came wandering through," said Nate Nelson, the zoo's curator of amphibians, reptiles, and fishes.
One of the Sedgwick County Zoo's females, Gaia, laid at least 17 eggs on the nights of May 19 and 20, 2007. The females can lay as many as 30 eggs at a time.
Because the English zoos had documented parthenogenesis, the Sedgwick County Zoo checked to see whether the eggs were fertile. Only two of the 17 eggs were hatched—one on January 31 and the other February 1—because the zoo doesn't have room for more dragons, Nelson said.
One of the baby dragons is 16 inches (40 centimeters) long, and the other is 17 inches (43 centimeters).
Komodo dragons can live 20 to 40 years. Males can reach 10 feet (3 meters) long and weigh as much as 200 pounds (90 kilograms). Females grow to between 5 and 7 feet (between 1.5 and 2 meters) and weigh as much as 125 pounds (57 kilograms).
Komodo dragons are endangered. There are between 3,000 and 5,000 in the wild. Eighty live in 30 zoos in North America. Only six zoos in the nation breed the dragons.
http://news.national...odd-komodo.html
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"Virgin Hatching"? Komodos Born Despite No Male
#2
Posted 13 February 2008 - 12:24 AM
Now this is something I know nothing about, and Wow have I learned a lot. Everything from
storing sperm , the life span etc. Nice find , and thanks for sharing.
storing sperm , the life span etc. Nice find , and thanks for sharing.
Women are Angels...And when someone breaks our wings...We simply continue to fly....on a broomstick...We are flexible like that... lilp
Experience is a hard teacher--- It gives us the test first and the lesson after!
Experience is a hard teacher--- It gives us the test first and the lesson after!
#3
Posted 17 February 2008 - 02:42 AM
Its not unheard of at all. I wonder if its something related to some amphibians abilities to change sex if necessary? Do other animals do this apart from some fish species?
#4
Posted 18 February 2008 - 01:12 AM
For some reason I thought I see something like this on here on PTU. or I wonder if I read something some where else ...but this just happened with a captive shark not long ago. Its kool how this happens.
Here are some links to it.
THis one was in Jan 2008 and a diff kind of shark..Whitetip
Environmental graffiti
This one was in May 2007..Hammerhead
Telegraph.co.uk
New York Times
Kool posting WTS.
As...I just read on one of these links I put up that some birds can do this too.
Here are some links to it.
THis one was in Jan 2008 and a diff kind of shark..Whitetip
Environmental graffiti
This one was in May 2007..Hammerhead
Telegraph.co.uk
New York Times
Kool posting WTS.
As...I just read on one of these links I put up that some birds can do this too.
#5
Posted 18 February 2008 - 01:17 AM
I really should have paid more attention in science class..
Women are Angels...And when someone breaks our wings...We simply continue to fly....on a broomstick...We are flexible like that... lilp
Experience is a hard teacher--- It gives us the test first and the lesson after!
Experience is a hard teacher--- It gives us the test first and the lesson after!
#6
Posted 18 February 2008 - 01:33 AM
Me too Chel...I didnt know any animal could do this. Until I read about it here. I sure didnt know that Komodo dragons could do this too. They say that these particular sharks arent suppose to beable to do that also. But they kidda proved them wrong , Id say lol.
#7
Posted 21 June 2008 - 12:02 AM
It sounds like the "Virgin Marry" of the animal kingdom to me.
#8
Posted 21 June 2008 - 01:18 PM
Women are Angels...And when someone breaks our wings...We simply continue to fly....on a broomstick...We are flexible like that... lilp
Experience is a hard teacher--- It gives us the test first and the lesson after!
Experience is a hard teacher--- It gives us the test first and the lesson after!
#10
Posted 25 November 2009 - 03:52 AM
Hello,
The link you provided isn't working. There is no image of komodos in the link.
I saw the shark one but not the komodos. I just heard that they can change their gender.
If you can update the link will be really great full.
Thanks for sharing such awareness.
The link you provided isn't working. There is no image of komodos in the link.
I saw the shark one but not the komodos. I just heard that they can change their gender.
If you can update the link will be really great full.
Thanks for sharing such awareness.
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