Re: [asa] David S Wilson

From: D. F. Siemens, Jr. <dfsiemensjr@juno.com>
Date: Sun May 06 2007 - 00:26:55 EDT

In small part, Randy wrote:

The animal study compared two flocks of hens, each
grouped into cages of 9-10 hens. One flock was artificially selected
for individual top egg-layers while the other flock was selected for
cage-level top egg-layers. After six generations, the flock selected
for individual performers was decimated and only a few battle-scarred
hen-pecked warriors remained with low egg production. The other flock
that was selected for group performance still thrived with high egg
production. Conclusion: groups of hens that had a positive influence
on each other had a higher survival rate. Ergo, groups of altruistic
organisms can have better survival rates.

It looks to me as though this is not so much a matter of altruism as one
of what is essentially inbreeding with a loss of fertility and vitality.
The individuals selected would be more likely to have similar genes
affecting egg production than the cages selected.
Dave

To unsubscribe, send a message to majordomo@calvin.edu with
"unsubscribe asa" (no quotes) as the body of the message.
Received on Sun May 6 00:32:21 2007

This archive was generated by hypermail 2.1.8 : Sun May 06 2007 - 00:32:21 EDT