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American Crayfish Overtaking British Cousins
2012-03-16 10:43:37

Stronger, heartier American signal crayfish are taking over populations of native white-clawed crayfish in Yorkshire. The more aggressive signal crayfish is able to withstand disease  and is less picky about what it eats. Biologists believe these and other reasons are contributing factors in the decline of Yorkshire´s native white-clawed crayfish. Signal crayfish can carry plague, which proves fatal in the native crayfish. Additionally, the native white-clawed crayfish suffers...

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2008-12-29 10:27:18

An agenda targeted at overturning the small numbers of the white-clawed crayfish has created 300 young this year alone in the UK. Natural England, the government's conservatory office, announced that the accomplishment of the breeding plan gave hope to the endangered species. The white-clawed crayfish is England's most threatened crustacean. Natural England and the Environment Agency are looking to secure funding and further develop the program, which started in 2003. The white-clawed...


Latest Astacidae Reference Libraries

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2008-05-04 22:57:27

The Danube Crayfish or Galician Crayfish (Astacus leptodactylus), is a species of crayfish native to eastern Europe. It can be distinguished most easily from the commoner European or broad-fingered crayfish (Astacus astacus) by the relatively thinner "fingers" of the claws. Photo Copyright and Credit

0_abeeb884742c656a7691892b7a5461cf
2008-05-04 22:26:21

The Signal Crayfish (Pacifastacus leniusculus), is an American crayfish indigenous to the western United States. Signal Crayfish were introduced in Swedish rivers and lakes to replace the native crayfish species there that were nearly exterminated from the crayfish plague that devastated the European crayfish stocks. This species has also been introduced to Japan and a number of other countries as well. Unfortunately, this species has also been introduced carelessly to some countries without...

0_0bcf70fe92e6b189712ef15848f86e0c
2008-05-02 01:28:54

The European Crayfish (Astacus astacus), also known as the Noble Crayfish or Broad-fingered Crayfish, is the most common species of crayfish in Europe, and is a traditional delicacy. Like other crayfish, the European crayfish is restricted to fresh water, living only in unpolluted streams, rivers and lakes. It is found from France throughout central Europe, to the Balkan peninsula, and north as far as parts of the British Isles, Scandinavia, and the western parts of the former Soviet Union....

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2008-05-01 00:28:17

The White-clawed Crayfish or Atlantic Stream Crayfish (Austropotamobius pallipes), is a European freshwater crayfish, and the only species of crayfish native to the British Isles. It is found from the Balkan Peninsula to Spain and reaches its northerly limit in Great Britain and Ireland, where it also has its greatest population density. The distribution of A. pallipes is rapidly shrinking and in Great Britain it is now more or less restricted to central and northern England and eastern...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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