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Re: Mystery Frog

Subject: Re: Mystery Frog
From: Walter Knapp <>
Date: Mon, 07 Jul 2003 23:52:02 -0400
Martyn Stewart wrote:
> When you catch them Walt, your not going to dissect them are you? Yuk!

Not me. I do understand the needs of science, so have to deal with the 
idea that something I collect may die. I know that delicate balance.

As I understand how they are doing DNA testing now they obtain a drop of 
blood from the frog. I know from some correspondence with someone on 
gray treefrogs that with those this can be done without harming the 
frog. In their study they pay for the shipment of the live frogs both 
ways and they are returned to the wild. I do not know if this is 
possible with something as small as a narrowmouth toad.

Most modern biologists are much more careful about harming the wildlife. 
For instance when I found the Brimley's the frogs I collected were cared 
for, looked at and photographed lots, but eventually someone was 
assigned to drive half way across the state to put them back. Or more 
like they found a staff person going that way.

Yes, a small percentage are still put in preservative, but far less than 
it used to be.

The arcane frog torture I'm figuring out at the moment is how to 
investigate frog release calls. These are special calls, and sometimes 
more, that a male frog gives when grabbed by another male to tell him he 
made a error. Easy to demonstrate on male toads, think about how you 
will grab the smaller frogs to test them. Take, for instance the Little 
Grass Frog, which full grown is well under 1/2". They are too small to 
grab at all, we coax them into our hand, or just onto a fingertip. I've 
been running around in my mind various grabber designs to use.

Walt




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