Posted on 02/05/2018 2:08:22 PM PST by BenLurkin
The marbled crayfish is the only crustacean that reproduces asexually, with the all-female species making clones of itself from eggs unfertilized by sperm...
Since its discovery in 1995 in Germany, the marbled crayfish has spread across Europe and into Africa in huge numbers. They eat anythingrotten leaves, snails or fish broods, small fish, small insects," says Frank Lyko, a molecular geneticist at the German Cancer Research Center in Heidelberg. This crayfish is a serious pest,
...
Lyko and his colleagues sequenced genomes of about a dozen marbled crayfish from different parts of the world and performed less detailed genetic analyses of two dozen more from across Madagascar. At 3.5 billion DNA bases in length, the crustaceans genome is bigger than the human genome, but contains about the same number of genes, 21,000, they report today in Nature Ecology & Evolution.
...
As suggested by some preliminary evidence, the marbled crayfish has three sets of 92 chromosomes, not the usual two, and each set is essentially a version of the chromosomes belonging to the slough crayfish (P. fallax). Two of the three sets of chromosomes are virtually identical, but the third is different enough that Lykos team concludes the marbled crayfish likely arose from the mating of two slough crayfish from different regions of the world thrown together in an aquarium. One must have had an abnormal egg or sperm that retained two copies of its chromosomes instead of the usual single set that is in such germ cells, Lyko explains. The bringing together of the two distant slough crayfish enhanced the genetic variation within the new clonal species. Such a union would never happen in the wild, he asserts.
(Excerpt) Read more at sciencemag.org ...
LOL!!!
LOL!!! 2
Two big claws look real meaty.
Manitoba trying to control them--but seems to be protecting them in their regs.
Effective May 1, 2007, it is illegal to possess crayfish (this includes possession for consumption).
Manitoba no longer issues experimental commercial fishing licenses for the harvest of crayfish.
Manitoba has listed rusty crayfish on the amended Prohibited Species list of the Manitoba Fisheries Regulations under The Fisheries Act.
Can't cook & eat it, can't use it for bait, and can't fish for it commercially.
And Manitoba wants to reduce the Rusty Crawfish population?
How do they taste?
All the same
One of my favorite meals.
Doesn't make any sense does it?
I could ask any fisherman I know here in Michigan about crayfish trapping and eating and no one would know what I was talking about. It seems to be a closet hobby among those who are aware of it............
that’s the big question.
If they’re good eatin’ they can be farmed as a food source in areas that might otherwise have periods of shortages.
No problem. Just tell the Cajuns that they taste good. Problem solved.
I recall the Bridges family in Sandkings ?
The Bridges. Beau, Jeff, etc. Even the boy was a Bridges. Beau’s son as I recall.
So how long before it shows up in 23andMe results ?
Seriously, this story is amazing. Someone actually got away with playing God here.
There you go! We finally found the solution to world hunger!!!!
Are they delicious?
<<>>
Yes, when you suck the heads.
If it ever makes it to Louisiana, its toast!.............
<<>>
Just go cook up some rice.
When any libtard brings up climate change just reply yes but what about the global crayfish problem?
Ask any Cajun!
Ask any Cajun!
Beau Bridges was inThe Sand Kings
Just one question. Are the edible?
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