Neoteny

Neoteny is the retention of juvenile characteristics in the adult form of a species. This phenomenon occurs when certain traits that are typically present in the young of an organism are retained into adulthood. Commonly observed in various species, neoteny can result in morphological, physiological, and behavioral changes. It plays a significant role in evolution, particularly in relation to development and adaptation to environmental pressures, and is seen in various species including some amphibians and mammals.

Neoteny meaning with examples

• The axolotl is a fascinating example of neoteny, as adults retain its gills and other larval features while living in an aquatic environment. This trait allows the axolotl to reproduce while still maintaining its juvenile characteristics, a fascinating adaptation for survival in its natural habitat.
• In Europe, some modern breeds of dogs exhibit neoteny, such as the Cavalier King Charles Spaniel, which showcases large eyes and a playful demeanor reminiscent of juvenile wolves. This change has turned them into beloved companions, emphasizing how human selection has favored these youthful traits.
• Humans exhibit some aspects of neoteny as well, such as our relatively large heads and flatter faces compared to our primate relatives. These features highlight the hypothesis that certain juvenile traits have been selected in humans over time, playing a role in social interactions and attraction.
• The concept of neoteny is also applied in the field of anthropology where some researchers argue that human evolution favored traits reminiscent of younger stages in development. This perspective suggests that our social structures and cultural traits may have evolved in response to these neotenous features, highlighting the complex ties between biology and culture.