Everything about The Signal Crayfish totally explained
The
signal crayfish,
Pacifastacus leniusculus, is an
American crayfish indigenous to the western
United States. Members of this species are up to 15
cm in length. They are bluish-brown to reddish-brown in color with robust large smooth claws. They have a white patch near the claw hinge.
Due to the
crayfish plague that ravaged
European crayfish stocks and has almost exterminated the
noble crayfish Astacus astacus,
Swedish biologists searched for a crayfish that could replace the native European crayfish. They found the signal crayfish and started to introduce it into Swedish rivers and lakes. This was the beginning of the introduction of this crayfish not only to various European countries but also to
Japan.
Unfortunately, this crayfish has been carelessly introduced to various countries without considering the fact that it carries the
crayfish plague, and thus causes the eventual extermination of native crayfish. This was the case both in
Great Britain and in Japan.
Image:Pacifastacus leniusculus cooked.jpg|A cooked Pacifastacus leniusculus
Image:SignalCrayfish-front.JPG|Signal crayfish, front view, from Grand Union Canal near River Nene
Image:SignalCrayfish-rear.JPG|Signal crayfish, rear view
Further Information
Get more info on 'Signal Crayfish'.
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