corixidae: low-cost hydrophones suggestions

[Klaus Riede <>]

Yes, indeed! I agree with this diagnosis, most probably 
these
are Corixidae. I wonder if there is reference material in 
any of
the bioacoustic archives! I vaguely remember some few 
publications
with spectrograms. In any case, there is a lot of work to 
do!
Greetings Klaus Riede

PD Dr. Klaus Riede
Global Register of Migratory Species - www.groms.de
Zoologisches Forschungsinstitut und Museum Alexander 
Koenig
Adenauerallee 160
53113 Bonn
GERMANY - phone +49-(0)228-9122234
GERMANY
 "Charles S. Henry" <> wrote:
> Hi,
> This is a pretty cool recording.  It sounds like a field 
> of goldenrod in mid to late summer! -- maybe these are 
> the sounds of stridulating aquatic beetles (hydrophilids, 
> gyrinids, dytiscids?) and water bugs (corixids, nepids, 
> notonectids?).  Very little is known about sound 
> production & communication within such underwater 
> communities.
> Charlie
>
> On 4/8/2012 8:25 AM,  wrote:
> > Dear all,