A good eye for arthropod evolution

Bioessays. 1994 Jun;16(6):419-24. doi: 10.1002/bies.950160610.

Abstract

Insect and crustacean lineages diverged over 500 Myr ago, and there are continuing uncertainties about whether they evolved from a common arthropod ancestor or, alternatively, they evolved independently from annelid worms. Despite the diversity of their limbs and lifestyles, the nervous systems of insects and crustaceans share many common features both in development and in function. Cellular and molecular embryology techniques reveal good evidence for homologies in the developing segmental ganglia. In the visual system, this seemingly common programme of insect and crustacean CNS development culminates in common adult neural function. Comparisons of the cellular anatomy and physiology of animals as diverse as flies and crayfishes indicate that the neural circuits in the lamina of their optic lobe have been inherited largely unchanged from a common ancestor with good compound eyes.

Publication types

  • Review

MeSH terms

  • Animals
  • Annelida / anatomy & histology
  • Annelida / classification
  • Annelida / genetics
  • Arthropods / anatomy & histology*
  • Arthropods / classification*
  • Arthropods / genetics
  • Bacterial Proteins*
  • Crustacea / anatomy & histology
  • Crustacea / classification
  • Crustacea / genetics
  • DNA-Binding Proteins / genetics
  • DNA-Binding Proteins / physiology
  • Drosophila Proteins*
  • Eye / anatomy & histology
  • Homeodomain Proteins*
  • Insect Hormones / genetics
  • Insect Hormones / physiology
  • Insecta / anatomy & histology
  • Insecta / classification
  • Insecta / genetics
  • Models, Biological
  • Morphogenesis / genetics
  • Nervous System / anatomy & histology
  • Optic Lobe, Nonmammalian / anatomy & histology
  • Optic Lobe, Nonmammalian / physiology
  • Photoreceptor Cells, Invertebrate / ultrastructure
  • Phylogeny*
  • Transcription Factors / genetics
  • Transcription Factors / physiology
  • Visual Pathways / anatomy & histology*
  • Visual Pathways / physiology

Substances

  • Bacterial Proteins
  • DNA-Binding Proteins
  • Drosophila Proteins
  • En protein, Drosophila
  • Homeodomain Proteins
  • Insect Hormones
  • Transcription Factors
  • eve protein, Drosophila