[Species senescence: fact or illusion?]

Area of Science:

• Evolutionary Biology
• Paleontology
• Theoretical Biology

Context:

• The concept of species senescence, or the aging of species, remains a topic of scientific inquiry.
• Existing evidence, including mass extinction events and observed patterns in evolutionary history, is often cited in discussions of species lifespan.
• Understanding the potential for species decline and extinction is crucial for ecological and evolutionary studies.

Purpose:

• To review existing studies on species senescence.
• To analyze evidence supporting the existence of species senescence.
• To formulate a potential evolutionary mechanism driving species senescence.

Summary:

• The review examines evidence for species senescence, such as mass extinctions and evolutionary 'laws'.
• A proposed mechanism suggests that imperfect self-replication and inherent evolutionary constraints lead to inevitable species transformation.
• This continuous transformation, driven by physical and chemical factors, can occur even in well-adapted species and may ultimately lead to extinction.

Impact:

• Provides a theoretical framework for understanding species lifecycles and extinction patterns.
• Highlights the role of inherent biological processes and environmental constraints in evolutionary trajectories.
• Contributes to the broader discussion on the factors influencing biodiversity and species longevity over geological timescales.