My son crayfish farm

My son and his friend set up a crayfish breeding at Pamulang southern part of Jakarta
Their start about 20 crayfish included 5 males. After 6 months the number of thse crayfish was becoming about one thousand. Here is the blog they had put their activity on http://rillahcrayfishfarm.blogspot.com/

Toxic Soup

Toxic Soup

Semarang my nostalgic town

I was born in Jepara but my education time in Diponegoro University as well as my wife home town Semarang made me emotional nostalgic feeling. Luckily I just struck in a blog society loenpia.net .By visiting members blog seem as I feel my memory flash back my younger day. Thank you for being accepted as member.To see loenpia click at my link

crayfish image

I found many interesting image
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crayfish behaviour

Jason Lott

2006-03-05T11:41:00-05:00
2006-03-05T16:52:36Z
2006-03-05T16:52:35Z

tag:blogger.com,1999:blog-9117522.post-114157755599369357
Crayfish on Crack

Here's a report from The Toledo Blade showing that serotonin injected directly into crayfish causes them to get fiesty with other crayfish, even those who are bigger and badder than they are. The result? A crayfish on crack that doesn't know when to cry "uncle."


Researchers hope crayfish, who have much larger and more easily studied neurons than humans, might provide deeper insights into our Prozac Nation's behavior.


While we're at it, crayfish fighting tactics are quite interesting. Here's an excerpt from the Journal of Experimental Biology:

After watching over 60 fights, Breithaupt realised that the winner always urinated more than the loser. When he analysed the loser's response, he saw the loser became more defensive every time its opponent urinated, although this wasn't obvious from watching the animals fighting. He also realised that no matter whether the crayfish had fought before, the loser always lost more quickly during the second duel, even if it was fighting a new adversary.

And here's a guy that loves to keep crayfish as pets!

Flickr

This is a test post from , a fancy photo sharing thing.

crayfish breeding and farming course

For indonesian who want to breed and farming may attend short course at Bintaro Lobster air tawar the short course was arranged in Jakarta Semarang and Surabaya

First self-cloning crayfish found

Joined: 05 Aug 2004
Posts: 138
Location: Pittsburgh, PA

PostPosted: Thu Jan 05, 2006 4:31 pm Post subject: First self-cloning crayfish found Reply with quote
First self-cloning crayfish found
by Tom Clarke ,

Mystery crustacean could pose risk to European cousins.


Marmokrebs could be good for lab studies.
Source: Nature

A mysterious species of crayfish discovered in German aquaria can reproduce without mating1. It could pose a serious threat to their European freshwater cousins, new research shows.

It's too late to ban the creatures, experts think. But efforts should be made to prevent their accidental release. "The public should be alerted," urges crayfish researcher Gerhard Scholtz of the Humboldt University of Berlin.

Scores of the 8-centimetre-long female crayfish, distinguished by their marble-patterned shells, appeared in the German aquarium trade in the 1990s. Rumours of virgin births soon began to circulate among amateur aquarists.

Scholtz and his colleagues now confirm that the creature, informally named Marmorkrebs, can indeed clone itself without recourse to male fertilization. This remarkable talent, called parthenogenesis, is known in some higher crustaceans, but has never been seen before in crayfish or their crab and lobster cousins.

More worryingly, Marmorkrebs seems to be closely related to the North American crayfish Procambarus fallax, and may therefore carry a highly infectious fungus that the American strain is known to harbour. When P. fallax was released into European waters in the nineteenth century, the fungus decimated native crayfish. "Most European crayfish are now endangered," says Scholtz.

This suggests that the release of just one Marmorkrebs into a European ecosystem could put natives at risk.

The arrival of Marmorkrebs isn't all bad news. Its large eggs and ability to self-clone could make it a useful organism for laboratory studies of evolution and embryonic development, suggests Scholtz. And it apparently tastes good, too.

References
Scholtz, G. et al. Parthenogenesis in an outsider crayfish. Nature, 421, 806.