[Zbrafish] Swarming zebrafish embryo parasites
(by april from zebrafish.org)
Mon Aug 4 17:03:36 EST 2008
To determine if these are in fact coleps, look at them under a
compound microscope. Coleps are very easy to identify. They move in
a swirling pattern and their body's are covered in plates that make
them look like hand grenades. Unhatched or recently hatch embryos
that have not developed swim bladders are the most susceptible to
coleps. A swarm of coleps can consume an entire embryo within 45
minutes. Once embryos are swimming they can fend them off quite
easily. If the parasites were only found in 1 embryo, I wouldn't
worry to much yet. Keep your embryos as clean as possible and remove
anything suspicious. You should also consider bleaching your
embryos, if you are not currently.
I would be happy to take a look at some pictures and help identify
the parasite. Good luck, and let me know if you have any questions.
On Jul 31, 2008, at 6:16 PM, RachelRaynes from gmail.com wrote:
> While performing maintenance on a clutch of 48 hour zebrafish embryos,
> I came across one with a swarm of parasites within its chorion. All
> the other embryos in the clutch were fine. I examined the embryo 5
> hours later and it was almost completely devoured. I assume that this
> is a parasite that the mother passed on? Unfortunately, the cross was
> albino stock and the individual fish was put back into a group tank
> after breeding. What were those things and what action if any needs
> to be taken?
> If anyone would like a picture or video of the embryo Id be happy to
> send one in hopes of identifying the parasite.
> Zbrafish mailing list
> Zbrafish from net.bio.net
April R. Freeman (Mazanec)
Zebrafish Int.'l Resource Center
5274 University of Oregon
Eugene, OR 97403-5274
Phone: (541) 346-6028 ext. 24
Fax: (541) 346-6151
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Zbrafish