Do Collective Behaviors Evolve Faster Than Individual Behaviors? Evidence from 22 Ant Species
- 演化之聲
- Mar 14
- 5 min read
When fireflies flash in unison, fish schools turn together with remarkable coordination, fiddler crabs wave their claws simultaneously, or ant colonies move as a collective unit, we are observing striking examples of collective behavior. The biological foundations behind these phenomena have long fascinated scientists. One particularly important question—debated for nearly a century—is whether collective behavior can evolve more rapidly than the behaviors expressed by individuals.
Research on ants now provides evidence that this may indeed occur. A form of collective behavior observed at the colony level—the rhythmic alternation between periods of rest and activity—appears to evolve faster than comparable behavioral rhythms in individual ants. Furthermore, these collective rhythms vary greatly among species. This suggests that collective behavior cannot be understood simply as the sum of many individual actions. Instead, it possesses its own evolutionary dynamics. Even when individuals do not undergo major behavioral changes, the collective behavior of entire colonies can diverge quickly across species, potentially contributing to the emergence of new forms of biological organization or social structure.
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