We all know that most land molluscs are nocturnal, but that malacologists
are diurnal! (at least in collecting habits). I am developing this a little
for a short section on aspects of sampling for my PhD. Sampling in the night
or day can result in different estimates of density, or even in the missing
of species altogether.

I have three questions people might be interested in trying to answer:

(1) does anyone have any data on this?
(2) does anyone have experience of night collecting and how this differs to
daytime collecting?
(3) somewhere, sometime, I read that Arthur Cain (I think) said that snails
are nocturnal, and malacologists diurnal (or words to that effect). I have
this somewhere in my literature collection but can't locate it. I think it
may even have been another author quoting Cain. It would be nice to pin this
down, and use as a quote. Come on, somebody must have come across a mention
to this (and have it at their fingertips!). Please let me know.

Regards

Alex

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------