Re: [Live-foods] Daphnia Disaster

["David Lains" <david at zebrafish_org>]

Hi Dan

We've started seeing increase myxozoan infections in lab fish populations.

Dero worms (aka micro-fex worms) are associated with their spread.

The most well known case is whirling disease in trout.

Best Fishes
David  


-----Original Message-----
From: live-foods-bounces at actwin_com [mailto:live-foods-bounces at actwin_com]
On Behalf Of Dan McMonigle
Sent: Wednesday, October 10, 2007 7:12 PM
To: live-foods at actwin_com
Subject: Re: [Live-foods] Daphnia Disaster

Chuck,
   
  I have been around reroofs, and the grit from the old shingles gets
everywhere. If the pond had not been emptied, the grit might have eventually
affected the daphnia or their quality as fish food.
   
  I can understand why he emptied the pond. In my job I see rain water
filled containers of all kinds all sunmmer long, all swarming with mosquito
larvae. Since in this area we have the disease that makes birds fall out of
the sky dead, rampant mosquito refugia are all the more repulsive. I know
the difference between daphnia and mosquitos but you can't expect the
average person to. He probably thought he was doing you and your neighbors a
big favor. 
   
  You now have an excuse to make the trip to Detroit to pick up some Russian
daphnia (and "micro-fex worms") and culture them inside where they do well
even with limited space year round.
   
  I have cultured daphnia outside, and eventually the culture get invaded by
predators such as glass worms that can quickly comsume an entire daphnia
population. You can usually get three or four years in before the predators
find your stash. After that, they check every year,

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