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Re: Pathogens and tubifex/blackworms

> Date: Mon, 14 Dec 1998 13:26:18 -0800 (PST)
> From: David Lyle Robinson <robinson at ichips_intel.com>
> Subject: Pathogens and tubifex/blackworms


> However, as I say, I'm not an expert and can only rely on those who are.
> Can you ask this prof's opinion specifically with regards to tapeworm?
> Perhaps he didn't think of this since tapeworm is a multi-lifecycle
> organism that requires multiple hosts.

You can ask him yourself. He is Dr. Barry Cooper, and runs the AKA web
site <www.aka.org>.

I'm aware of the fact that tubificids are a known intermediate host for
tapeworm in the wild. [For Example, see Untergasser's _Handbook of
Tropical Fish Diseases_, TFH] However, they never seem to be in
captivity. Tapeworm is extremely rare in aquaria, and only seems to
happen in wild-caught fish, for some reason. I've been using tubifex,
then blackworms, for over 40 years, and never seen (or even heard) of a
single case of tapeworm in aquarium-raised fish.


Date: Mon, 14 Dec 1998 16:25:33 -0500
From: "Borowsky, Kevin" <KBorowsky at FurmanSelz_com>
Subject: Black Worms

>> Yes, for any amount reasonable for live food. They have to either get
>> their tail to the surface to get air, or the water must be very oxygen
>> rich (i.e., cold and unpopulated).

> I have the same problem as the fellow who originally posted the black worm
> questions. Are you sure black worms need to get to the surface. I have
> observed some of them that got away in my aquarium traveling through the
> gravel. They seem quite happy and this is a good 2 weeks later.

In low concentration, they can make it. In nature, they are almost
always submerged. In the masses sold as food, they quickly suffocate if
not kept both cold and near the surface. I should have said "...cold
*or* unpopulated." Thanks for catching that.

In the multi-tank growout system I described, they are completely
submerged, too.


Wright Huntley, Fremont CA, USA, 510 494-8679  huntley1 at home dot com
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