Eyes, eye stalks and the visual world of semi-terrestrial crabs

  title={Eyes, eye stalks and the visual world of semi-terrestrial crabs},
  author={Jochen Zeil and Gerbera Nalbach and H. -O. Nalbach},
  journal={Journal of Comparative Physiology A},
Summary1.We used in vivo optical techniques to study compound eye organisation and the extent of eye stalk development in 17 species of semi-terrestrial crabs (Brachyura).2.‘Narrow-fronted’ species (Ocypodidae, Mictyridae) which have their eyes close together on elongated, vertically oriented eye stalks have a narrow acute zone for vertical resolving power along the horizon (Figs. 2, 4, 6), while ‘broad-fronted’ species (Grapsidae, Xanthidae, Portunidae) which have their eyes far apart on short… 

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