Right-handed snakes: convergent evolution of asymmetry for functional specialization.

  title={Right-handed snakes: convergent evolution of asymmetry for functional specialization.},
  author={Masaki Hoso and Takahiro Asami and Michio Hori},
  journal={Biology letters},
  volume={3 2},
External asymmetry found in diverse animals bears critical functions to fulfil ecological requirements. Some snail-eating arthropods exhibit directional asymmetry in their feeding apparatus for foraging efficiency because dextral (clockwise) species are overwhelmingly predominant in snails. Here, we show convergence of directional asymmetry in the dentition of snail-eating vertebrates. We found that snakes in the subfamily Pareatinae, except for non-snail-eating specialists, have more teeth on… CONTINUE READING
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