[MARMAM] Projects related on pingers

Andrea Dell'Apa mako1979 at hotmail.com
Wed Aug 2 00:51:28 PDT 2006

Dear all,

i'm an italian researcher. I have tryed to find information about pingers, 
used as acoustical device to avoid cetaceans by-catch. I'm interested 
particularly on outcomes related on tursiops in open water.
I have found some interesting results searching on internet:

Stone, G. S., Cavagnaro, L., Hutt, A., Kraus, S., Baldwin, K., Brown, J. 
"Reactions of Hector's dolphins to acoustic gillnet pingers" 2000

Jefferson, T. A., Curry, B. "Acoustic methods of reducing or eliminating 
marine mammal-fishery interactions: do they work?" 1995

My problem is that all the works related with tursiops demonstrate that 
after a short period, mainly 3 months, dolphins get used to the sound , so 
this acoustical device works for a very short period. After that they are 
actracted by the sound because it remainds them a possible source of food. 
As i would like to continue the sperimentation for a project on dolphins 
located in the Pontine islands in Italy, i would like to take a look at as 
much results as it possible.
If anyone could help me, please feel free to contact me.

Thank you everyone.

Andrea Dell'Apa

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