Dear Christine,
The following paper is mostly about the variation of the patterns on the
shell of C. acuta, but it may be helpful nevertheless. There doesn't appear
to be very many papers written on this species.

Aubertin et al. Natural history & variation of pointed snail, Cochlicella
acuta.
Proc. Zool. Soc. London 1027-1055, 1930.

As for Cernuella virgata, I know from personal experience that its
introduced populations can reach enormous densities. I know one such
population behind a building in Istanbul, Turkey, where one can hardly take
a step without stepping on snails. It is an introduced pest in Australia. So
you may want to look it up in Australian journals.

Good luck.

Aydin

 -----Original Message-----
From:   Christine Parent [mailto:[log in to unmask]]
Sent:   Thursday, November 22, 2001 12:03 AM
To:     [log in to unmask]
Subject:        land snail abundance

Dear Conch-lers,

I'm looking for some information on land snail abundance. I would greatly
appreciate any info or reference you may provide regarding the population
densities of the following species:

Vespericola columbiana (Polygyridae)

Polydontes undulata (Camaenidae)

Satsuma japonica (Camaenidae)

Craterodiscus pricei (Camaenidae)

Trichia striolata (Hygromiidae)

Trichia hispida (Hygromiidae)

Cochlicella acuta (Helicellidae)

Cernuella virgata (Helicellidae)

Marmorana scabriuscula (Helicidae)

Helicigona lapicida (Helicidae)

Bradybaena similaris (Bradybaenidae)

Aegista vulgivaga (Bradybaenidae)

Euhadra amaliae (Bradybaenidae)

Euhadra sandai (Bradybaenidae)

Monadenia fidelis (Helminthoglyptidae)

Thanks,

Christine



Christine Parent
Department of Biological Sciences
Simon Fraser University
8888 University Drive
Burnaby (BC)    V5A 1S6
[log in to unmask]