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11-01-2011, 12:53 PM
|  | Wild Member | | Join Date: Oct 2010
Posts: 100
| | | Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
It has been confirmed that D. villosus (a potentially invasive non-native species) is present at a site close to me. Apparently it is a voracious predator of aquatic invertebrates. Anyone else have any experience of it?
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11-01-2011, 01:30 PM
| | Commander of the Wild Empire | | Join Date: Jul 2008 Location: Watford, Hertfordshire.
Posts: 4,867
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
So where's "close to me" - Timbuktu? It makes a difference!
Jim |
11-01-2011, 01:43 PM
|  | Knight Grand Cross of the Wild Empire | | Join Date: Nov 2006 Location: North Yorkshire
Posts: 10,729
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Possibly Grafham Water they are in there, although work is being done to contain them, im sure its only a matter of time before they are more widespread. |
11-01-2011, 04:03 PM
|  | Officer of the Wild Empire | | Join Date: Oct 2006 Location: north yorks
Posts: 843
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
there was a population found in Wales at the end of the year
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12-01-2011, 08:31 AM
|  | Member of the Wild Empire | | Join Date: Sep 2010 Location: Dorset
Posts: 298
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Any ideas how they got here? |
12-01-2011, 03:21 PM
| | Wild Member | | Join Date: Oct 2010
Posts: 100
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Quote:
Originally Posted by tom00_uk  there was a population found in Wales at the end of the year | Yep, thats where I am. Two populations, one in Cardiff bay and one in Port Talbot.
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12-01-2011, 03:25 PM
| | Wild Member | | Join Date: Oct 2010
Posts: 100
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Quote:
Originally Posted by Burko Any ideas how they got here? | It would be interesting to know how they arrived in the first place, once here, its very easy for them to spread further afield by any number of means.
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12-01-2011, 03:38 PM
| | Officer of the Wild Empire | | Join Date: Dec 2008
Posts: 828
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
One possible is from boats?
The water i worked on you would have to check every boat (for Zebra Mussels) that came in from Cardiff bay before they where allowed to sail. And then we would have to rely on the honesty of those that where bringing them here. |
12-01-2011, 03:39 PM
|  | Knight Commander of the Wild Empire | | Join Date: Mar 2007 Location: Romford, Essex
Posts: 5,356
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Quote:
Originally Posted by Putorius It would be interesting to know how they arrived in the first place, once here, its very easy for them to spread further afield by any number of means. | As with most inverts its probably among garden plants, in this case pond plants. Plant importers have a lot to answer for... |
13-01-2011, 03:15 PM
|  | Commander of the Wild Empire | | Join Date: Sep 2010 Location: Here, There, and Everywhere!
Posts: 1,306
| | | Re: Dikerogammarus villosus, the "killer” shrimp coming to a water body near you
Quote:
Originally Posted by Putorius It would be interesting to know how they arrived in the first place, once here, its very easy for them to spread further afield by any number of means. | ....Interesting perhaps but isn't it a bit academic? I'd suggest they arrived via boats or imported plants, in other words simply by being carried and unavoidable. In 10,000 years they might be called native. Any climate changes will change what's 'native' according to what survives an environment.
How big are these critters?
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