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Updated: Apr 14, 2026
05:12
Swimming Performance Assessment in Fishes
Published on: May 20, 2011
26.1K
Convergence on an optimal way to swim.
1Freelance Science Writer, Fairfield, California, United States of America.
Plos Biology
|April 29, 2015
Summary
Evolution repeatedly favors a single optimal swimming method in animals like rays and cuttlefish. This study examines eight independent instances of this convergent evolution in aquatic locomotion.
Area of Science:
- Evolutionary biology
- Comparative biomechanics
- Animal locomotion
Background:
- Convergent evolution demonstrates how similar environmental pressures can lead to similar biological solutions independently.
- Understanding the evolution of locomotion provides insights into organismal adaptation and functional morphology.
Purpose of the Study:
- To investigate the evolutionary pathways of a specific swimming mode in aquatic animals.
- To identify if a single optimal solution is repeatedly achieved through independent evolutionary events.
Main Methods:
- Comparative analysis of eight independent evolutionary lineages.
- Examination of morphological and kinematic data related to swimming in rays and cuttlefish.
Main Results:
- Eight distinct instances of evolution for a specific swimming style were identified.
- All instances converged on a single, optimal biomechanical solution for efficient aquatic locomotion.
Conclusions:
- The evolution of certain locomotive functions can be constrained, leading to repeated convergence on optimal designs.
- This finding highlights the power of natural selection to find the most efficient solutions to environmental challenges.
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