Animals are rapidly changing their behavior to survive new environments. This flexibility allows them to adapt quickly without physical changes. However, this behavioral adaptation can slow down their physical evolution. Studies show animals with ...
While birds living in urban areas learn to crack open food packages rather than forage for natural resources, a fish modifies its foraging behavior in response to a shortage of its primary prey. Such behavioral shifts occur rapidly, usually within one generation, and are indicative of an animal’s dependence on learned behavior in order to cope with changing environments.
Scientific findings cited by Phys.org and published in Nature Communications reveal that behavioral plasticity enables animals to adapt to rapid environmental changes without undergoing physical modifications. Rather than evolving through several generations to acquire new characteristics, organisms alter their behavior instantly.
Flexibility starts slowing down evolution
Notably, such behavioral flexibility may have a negative impact on the rate of physical evolution. As described in an article published by PLOS Biology, when a species successfully adapts its behavior to a changing environment, there will be little pressure on the process of evolving physiologically. If the species is capable of adapting itself in terms of changing its diet or habitat, there will be no need to evolve any additional physical characteristics to survive in such conditions. In other words, behavior serves as a reaction to changes, while physical evolution occurs gradually. On the other hand, species that have average behavioral flexibility evolve quickly due to both factors.
Image Credit: Gemini
Why does this matter for survival?
The concept of behavioral flexibility gives insight into predicting how animals will react when facing a sudden alteration of their environment. As shown in Scientific Reports, animals with high behavioral flexibility prove to be able to survive well in the face of environmental alterations, whereas animals with low adaptability are less resistant to these challenges. In turn, studies on Frontiers in Ecology and Evolution have proven that through time, behavioral modifications could lead to evolutionary processes by creating additional pressure for adaptation. Behavior is not only a reaction. It is an instrument of survival that allows organisms to adapt more quickly than through evolution.
