The recording referenced below was recorded using an Offshore
Acoustics (Beverly Ford in Vancouver, BC) hydrophone in a large dish
of samples we had taken out of a spring pond at Mono Lake in the
Eastern Sierras just E. of Yosemite NP. When we refined the samples,
we found water boatman, insect larvae (sp. ?) and spade foot toad
tadpoles, all creating different signatures. So that seems to work.
I'll try to recover the reference paper. Since it had to do with
T-cell (a factor of HIV and AIDS) there was some interest from Dr.
Jay Levy's lab at UC (he's the fellow who discovered the AIDs virus
in the late 70s). I'll see if he still has it.
>Wild Sanctuary wrote:
>> Not really, Walt, if the question is serious. Perhaps someone in the
>> group knows how to make a very sensitive transducer out of a slide.
>> We've been working with UCSF on a very large, isolated and sensitive
>> transducer that would pick up the signature of cell metabolism and
>> certain types of viruses attaching and detaching themselves from cell
>> media (work already published by some folks in Great Britain a couple
>> of years back, altho I forget the reference at the moment). Protozoa
>> should be relatively simple...perhaps even with existing
>> hydrophones...but in a space much larger than that of a slide (hear
>> Track 6 on the CD that comes with "Wild Soundscapes" as a reference).
>It is a serious interest. Before I got sucked into frogs I frequented
>swamps for protozoa. In fact that's how I got sucked in. Saw about the
>survey, thought that would be a good way to look in more swamps for
>protozoa. My field microscope has not been used in a few years, though
>I'm going to get back to that. My primary professional training and long
>term interest is aquatic micro ecology. I've been toying with this idea
>for a while, though have not done a lot of research yet.
>Be glad for any references that might help. I can fit a single protozoa
>in a larger volume of water if that's what's necessary. I've even got
>the micromanipulators to sort bacteria one at a time. Though it would
>sure be nice to do it on a slide where I can watch the animal.
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