The tadpole shrimp Triops cancriformis has been found in the Caerlaverock nature reserve in Dumfriesshire, Scotland. It is considered to be possibly the oldest living species in the world, because it has remained nearly unchanged for an estimated 220 million years. (Another reference states tadpole shrimp may have been living for 300 million years.)
Scientist Larry Griffin who has studied the rare shrimp, said, “Triops matures rapidly and produces hundreds of eggs in just a couple of weeks. The pond they live in may dry out, but the eggs can survive in the mud for many years.”
Not only are the shrimp unique for having survived several major extinctions, they also can have both male and female reproductive parts so just one can generate a new colony. Tadpole shrimp live in seasonal, freshwater ponds. Their eggs are very tough. They can resist high temperatures (almost boiling), dryness and even consumption by birds. It is thought they also can remain in a dormant state for years, or even centuries until favorable conditions occur, and then they hatch. Tadpole shrimp have outlived dinosaurs, trilobites and mammoths. They are endangered and protected by law in Scotland.
Tadpole Shrimp Video
Read more: Nature & Wildlife, Pets, tadpole shrimp
Disclaimer: The views expressed above are solely those of the author and may
not reflect those of
Care2, Inc., its employees or advertisers.
good recipe ideas
I've been doing this room by room since September! We painted, changed things around and gave a who…
He acts like a cat :)
I never heard about a seed library. It sounds like a pretty good idea. We buy most of our seed…
Not sure this is a gender issue... more of a personality issue, but I could see the potential confli…
66 comments
+ add your ownBugs Rock !
If the tadpole shrimp lives in the sea, and may be as old as 300million years, there is another seacreature that is judged to be up to 350million years old.
Now 50million years may not be an enormous number to scientists I thought I would put the record straight.
The "coelacanth" first found off the coast of East London in South Africa, is believed to be 350million years old.
That would make it the oldest species living in the ocean!
Very interesting little creature that has lasted the true test of time.May it continue!!
Fascinating. Nature is so marvelous. We would be better off & leave a better world to our children if only we'd let it show it's beauty and stop distroying it.
I hope they do keep them protected. What a find. Thanks.
Why are they endangered now after surviving so long?
Thanks. Nature never ceases to amaze and delight.
thank you never knew that
They remind me of horseshoe crabs....
Our amazing nature. Never stops surprising us.
Why can't we give it more respect.
Make a difference, show Love, understanding and Tolerance. Plant a Tree.
login to add your comment
use your care2 login
add your comment
20