I don't know, why am I not comfortable with the two week vacationer test?
Gary

--- On Wed, 10/15/08, Dennis sargent <[log in to unmask]> wrote:

> From: Dennis sargent <[log in to unmask]>
> Subject: [CONCH-L] RARE, UNCOMMON, COMMON
> To: [log in to unmask]
> Date: Wednesday, October 15, 2008, 5:22 PM
> Hello everyone, my name is Dennis Sargent and this is my
> first post on
> CONCH-L.
>
> I was very much involved with mollusks in the days before
> computers and I am
> pleased to return to my interest and find this great
> resource.
>
>
>
> Ed Petuch and I just recently finished editing the section
> on the genus
> Oliva for Guido Poppe's "Philippine Marine
> Mollusks, Volume 2".
>
> That series does list the relative rarity of the pictured
> species. When I
> first reviewed the material, I noted several species that
> were listed as
> rare that can be found by the hundreds in shell shop bins.
> I questioned
> Guido concerning the rating and he replied, "The
> rating in this series of
> books is based upon someone coming to the Philippines for a
> two week
> vacation and the likelihood that they will find a live
> specimen of that
> species on their trip". He added further, "The
> shells in the bins may
> represent a fisherman's annual take of that species, as
> for many of them,
> the shells are a sideline to supplement their commercial
> fishing activity."
>
>
>
> This made me realize that each author may be looking at the
> issue of
> relative abundance from a different viewpoint. From now on,
> I will try to
> establish the criteria for relative rarity whenever I use
> that measure.
>
>
>
> Best wishes,
>
>
>
> Dennis M. Sargent
>
> [log in to unmask]

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