Lizards Defy Expectations: Surviving and Thriving with Missing Limbs

Researchers studying lizards in the wild have made a groundbreaking discovery, finding that over 100 individuals from nearly 60 species can survive without one or more limbs. This challenges the long-held assumption that a lost limb would be a death sentence for these animals. James Stroud, an evolutionary biologist at the Georgia Institute of Technology, and his team have been observing and studying lizards to understand their evolution, with surprising results.

Key Takeaways:

• The team found 122 individuals from 58 species, including geckos, iguanas, and chameleons, that were missing one or more limbs.
• Most of the limb-lacking lizards were observed to be heavier than the average body size in their population, suggesting they managed to feed despite being injured.
• Some of the injured lizards were even reproducing, with females carrying eggs.
• The team observed that injured lizards used different strategies to compensate for the lack of a leg, such as strengthening their undulating movements or taking more steps.
• The study highlights that not all three-legged lizards survive, and their findings only focused on those that do.

Statistics:

• 122 individuals from 58 species were observed with missing limbs.
• 58 species of lizards were documented with missing limbs.
• Less than 1% of individuals in a population are missing a leg.
• The team received images of limping lizards from four continents.

Sources:

• Stroud, J. (no date mentioned). Personal communication with the author of this article.
• The American Naturalist. (no date mentioned).
• Stroud, J., et al. (no date mentioned). Unpublished data.
• Scherz, M. (no date mentioned). Personal communication with the author of this article.
• Hillen, B. (no external reference, appears to be the source of the summary)
• Natural History Museum of Denmark (no date mentioned).
• Georgia Institute of Technology (no date mentioned).