JBeukema
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Why Do Subordinates In Many Animal Species Accept Social Position Without A Fight?When the speed of escape in response to an attack was measured, the researchers found that subordinate fish were significantly faster than the dominant ones. "This is particularly interesting because we predicted the opposite: that dominant fish were the ones that would prove to be more athletic" explains Dr. Frank Seebacher, who led the research team. "Our data indicate either that there may be a training effect because subordinate fish have to escape quickly and often, or that slower fish become more aggressive because they cannot manoeuvre quickly."
I forward the hypothesis that constant infighting is detrimental to the fitness of the population. As a result, a population with a high proportion of aggressive individuals will be less successful than one with a greater number of submissive or 'cowardly' individuals, which will be dominated by the minority of more aggressive members.
Thoughts?