Cryptocotyle lingua eggs

[DARWIN PC3]

Dear all

I would like to do some work using Cryptocotyle lingua eggs but I am 
having problems obtaining sufficient numbers.  I have tried obtaining 
them from Herring gull (Larus argentatus) guano collected locally but 
this has proved unsucessful. I would be very grateful if anybody could 
give me information on where I may be able to obtain these eggs. 

Many thanks

John Knowles
email:  es0jkn at environment.sunderland.ac.uk


Ecology centre
University of Sunderland
Sunderland
Tyne and Wear 
SR1  3SD
England