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AW: Rotifer cultures?



Hi,

I have a stable rotifer culture which is feeding on algae. Under microscope,
you will see very little bacteria and I only once saw a paracemium. It seems
the rotifers feed on both bacteria and algae. I only feed algae and they
keep make sure bacteria and ciliates wont multiply too much.

Erik


> -----Ursprüngliche Nachricht-----
> Von: owner-killietalk at aka_org [mailto:owner-killietalk at aka_org]Im
> Auftrag von Edd.Kray at rf_doe.gov
> Gesendet: Dienstag, 23. Juli 2002 19:18
> An: killietalk at aka_org
> Betreff: Re: Rotifer cultures?
>
>
>
>
> John asked about sources for clean rotifer cultures.......
>
> I wonder what the importance of a "clean culture: is?  Although I
> have used
> clean cultures of rotifer (raised by a friend) to get Epi fry through the
> first week,  I do observe that fry growing up in my established, natural
> tanks grow like the proverbial weeds due to the microbes present and that
> includes the whole spectrum from protozoans to multicellular orgs' like
> rotifers. Peat-based mulm from my tank bottoms is a rich culture of mixed
> microorganisms that makes a great food source for newly hatched's.
>
> Raising "pure" rotifer cultures is possible but time consuming.(I
> emphasize
> the word "pure" becuase, obviously there must be some food source like
> paramecium in there for the rotifers to eat....so actually its a
> controlled-mixed rather than a really pure culture). I guess a "pure
> culture" can give you quantity when you need that, but you will have to
> supply a disproportionate amount of work to get that.
>
> Carolina Biological can sell you pure starter cultures. Check their
> website.
>
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