RE: [GSAS-Member] Safe in Tank Acrylic Sandpaper

[haika@drizzle.com]

You are right. Awhile back, a huge female sturgeon was found floating in
Lake Washington and they hauled the carcass to our campus and someone dug
out the otoliths. The WA State scientists brought them to the next CARE
meeting (Committee of Age Reading Experts) and age readers from the entire
West Coast took a shot at ageing the critter. I think everyone got over
80....don't remember the age range as this was a couple decades ago. But
there was little doubt that the critter was old.

Betty Goetz

> I believe sturgeon routinely can make it to the old category provided
> they are not caught and eaten first.
>
> -----Original Message-----
> From: haika@drizzle.com [mailto:haika@drizzle.com]
> Sent: Wednesday, April 06, 2005 9:34 AM
> To: Greater Seattle Aquarium Society member chat
> Cc: gsas-member@thekrib.com
> Subject: Re: [GSAS-Member] Safe in Tank Acrylic Sandpaper
>
>
>> Are there any old fish in the wild?)
>
> If an age of 100+ can be defined as 'old'...yes, we encounter them on a
> routine basis. Of course, I'm talking about fish in a marine ecosystem
> rather than freshwater. Dover sole, sablefish (black cod), and several
> rockfish (Sebastes) spp routinely exceed 60 years of age. Our lab has
> validated these age estimates with radiometric analysis. Just last week
> I looked at an otolith preparation from a rougheye rockfish that we
> estimated was 100+ years old (I got 101, another age reader got 104). We
> are preparing a thin-section of this otolith just to cross-check our
> estimate.
>
> Betty Goetz
>
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