Dear Michel,
To drive "mudworms" such as P.hoplura and related species from their
burrows a mixture of 0-dichlorobenzene and phenol solutions can be
used. I use 100 ppm and 500 ppm respectively. Several hours exposure
are required and this is some what temperature dependent. An overnight
exposure after being set up the previous afternoon will drive most adult
worm from the shells but may kill or degrade settling larvae making
identification difficult. Mackenzie & Shearer 1959 (from memory) was an
early paper on the subject.
regards,
Mark LL
<slleonartm at vision.net.au>
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