Jan 14, 2010 Lorenzo Martinez Bernal Crab species 3
Like all crayfish, animals are loners and are omnivorous, although their diet is mainly vegetarian can eat anything, from the roots and leaves rotting meat, including crayfish smaller than them.
Because the plague of red crabs American river that ravaged Europe , They have almost exterminated the noble crayfish Astacus astacus river, Swedish biologist Gunnar Svärdson went to the US. to find a crayfish that could replace European crayfish source. He found the crab signal and began to enter into the rivers and lakes of Sweden.
This was the beginning of the introduction of the signal crayfish ,not only several European countries, but also to Japan. .
In the next picture we can differentiate the left of the photo to the American signal crayfish and right the American red crab.
One notable difference between these two species is the size of their much larger clamps on the signal crayfish.
Crab eggs stored under the tail these are of a crab signal.
Unfortunately,The introduction of this signal crayfish has been neglected envarios countries without taking into account the fact that, While it is resistant to plague American River crabs can still act as a carrier. Thus, proliferation accelerates the eventual extinction of native river crab. The concern is that this could also be the case, both in Britain, Japan and Norway.
In the decade of the seventies in Spain native crabs disappeared because of the struggle intently-mitosis is a disease caused by a fungus that carry both signal crayfish as red imported both North America and they are immune.
Fisherman and specializes in catfish fishing boat launched from the pellets.Si professional guide and want to spend an unforgettable day of fishing this river giant contact us via the contact form fishing guide.
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Hello, to see if you are kind enough to work out a question, my son has brought me a crab pond and not whether or not autoctono,measures between 7 Y 10 cm,Tweezers are small and the tip of the tweezers is reddish,The rest of the crab is greenish, I would like to know that if autoctono'll return to the pond, on the contrary, stick it in a small aquarium that I have. Greetings and thanks
Hello ¡ I'm a lover , of the nature, I just wanted to comment that the main fungus, harmful, for our species, of native crayfish, It's been self, man who ursurpado,the rivers , filling them , Poisons , and harmful, for river wildlife, that's the truth. bend¡ eol we are in the womb, if we kill our mother, what will happen.
Hello.
I have a family with a land through which it passes
a river in Bizkaia and I would like to know which is about repopulate with crabs, where you could buy and if it is more convenient to do with local or signal crayfish…
Thank you for receiving the response
i.otaegi