IUBio GIL .. BIOSCI/Bionet News .. Biosequences .. Software .. FTP

Pathogens of pathogens question

Rob Knell r.knell at qmw.ac.uk
Mon Nov 22 05:33:56 EST 1999

On Wed, 17 Nov 1999 22:33:31 -0800, "Russell Farris"
<tryggvi at email.msn.com> wrote:

>I know there are viruses that prey on bacteria. Chlamydiae have been found
>in protozoans. Are there other examples of pathogens having pathogens. Are
>there, for example, bacteria that attack helminth worms? Thanks.
>Russ Farris

If we move outside the classical parasites there are numerous examples
from the parasitoid wasps, where 'hyperparasitism' is a common
phenomenon. This is the situation where one species of parasitoid wasp
lays an egg in a host (say a caterpillar) and then another species
comes along and oviposits in the same host, killing the initial
parasitoid and taking the host over. Im not sure how many of these
just use the same host once its already parasitised and how many
actually develop in the body of the first parasitoid, but I'm sure
that some do. 


Rob Knell

More information about the Parasite mailing list

Send comments to us at archive@iubioarchive.bio.net