Some turtle species can live for over a century, notably giant tortoises of the Galápagos and Aldabra; the oldest known individual reached about 187 years.
Overview
Many large tortoise species regularly surpass 100 years of age in the wild and in captivity, making them remarkable examples of extreme vertebrate longevity and valuable subjects for research into aging and conservation.
Why They Live So Long
Their longevity is linked to a slow metabolism, energy-conserving life history, protective shells that reduce predation, and physiological traits that slow cellular damage over time, all of which contribute to extended lifespans.
Scientific Significance
Studying long-lived turtles provides insights into mechanisms of aging, stress resistance, and genome maintenance, and helps inform conservation strategies for species that recover slowly from population declines.
Practical Tips
- When teaching longevity, compare species and emphasise how environment and genetics influence lifespan.
- Highlight conservation implications: long-lived species often have slow reproductive rates and need sustained protection.
- Explore genomic and physiological studies to learn which mechanisms support extended lifespans in chelonians.
Quick Related Facts
- Notable species: Galápagos giant tortoises; Aldabra giant tortoises
- Typical longevity: frequently over 100 years
- Oldest known individual: about 187 years
- Key factors: slow metabolism; protective shell; physiological longevity adaptations