The northern abalone, Haliotis kamtschatkana varies in size according to
habitats and the regions of the B.C. coast, NE Pacific. There are numerous
populations in wave exposed conditions, what the fishermen called "surf
abalone". These abalone are stunted and never reach the harvestable minimum
size. Transplants showed that these abalone grew to larger sizes in more
favourable (protected) habitats.

Water temperature will also affect growth. The greatest densities of abalone
and the fishery were in the northern region, but the largest specimens were
found in the south where water temperatures are greater.

cheers
Rick Harbo
Nanaimo, B.C. Canada
----- Original Message -----
From: "Rf-J-Rf" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, February 06, 2005 1:22 AM
Subject: Re: and what about abalones


> Maybe you will sleep better now , maybe not  : In " A Conchological
> Iconography - Family Haliotidae " Daniel Geiger gives no explanation for
the
> size variation ( my guess is that it is probably related to diet ) in
> Haliotis tuberculata and there is no statistic study   either about  size
> around Gibraltar . In southern Mediterranean there are records of the
> species from Morocco , Algeria , Tunisia , Lybia and Egypt . As far as H.
> stomatiaeformis is concerned I could youd send you color photos and I
might
> have some spares though I do not have any live-taken specimen y collection
.
> I have some color photos of the recently described  Haliotis mykonosensis
if
> you want . Franck Frydman
> ----- Original Message -----
> From: Olivier Caro
> To: [log in to unmask]
> Sent: Tuesday, January 25, 2005 11:21 AM
> Subject: and what about abalones
>
>
> After the heroic description of the differences between two scallops, I
find
> now an other tremendous subject, one of those able to delete any ability
to
> sleep: Haliotis tuberculata Linnaeus, 1758...
>
> This shell varies in size from NW to SE of its range.
> Why ?
> Big specimens can be found along the Altantic coast of Spain & Portugal,
and
> small adults appear as soon as the Gibraltar strait has been passed
trough.
> Is there a place where big and small adult coexist, or is there a quick
> variation in size near Gibraltar ?
> Any Morrocan records ?
>
> Any idea? Any pictures ? Any material to share with me ?
> And what about this little abalone from Malta ? any pics somewhere ?
>
> Thanks in advance
>
> Olivier Caro
> [log in to unmask]
> Rennes, France
>
>
>
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