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One of my favorite articles (I have the full article)
"Variability and relationships of fish visual pigments" by C.D.B. Bridges
Vision Research Volume 5, Issues 6-7, June 1965, Pages 239-251
It explains how the visual pigments/spectra for different specimens vary among schoolmates (in species such as minnows). One conclusion drawn: that although individuals have limited spectral sensitivity, as a group they have a significantly wider sensitivity allowing the school to have better vision than the individuals, hence easier to spot predators, food resources, etc. Not to mention many eyes in general--the compound eye writ large.
Stephen Miles Uzzo, PhD.
VP, Science & Technology
New York Hall of Science
47-01 111th Street
Flushing Meadows Corona Park, NY 11368 USA
V +1.718.699.0005 x377
F +1.718.699.5227
On Mar 3, 2011, at 4:02 PM, Charlie Carlson wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> It's also about finding food and access to resources.
> C
> On Mar 3, 2011, at 11:06 AM, Martin Weiss wrote:
>
>> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>> Incorporated, a worldwide network of science museums and related institutions.
>> *****************************************************************************
>>
>> Charley
>>
>> Isn't this about protection from predation?
>>
>> Martin
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