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Spectral sensitivity of a colour changing spider

Författare

  • Jeremy Defrize
  • Claudio R. Lazzari
  • Eric Warrant
  • Jerome Casas

Summary, in English

Vision plays a paramount role in some spider families such as the Salticidae, Lycosidae and Thomisidae, as it is involved in prey hunting, orientation or choice of substrate. In the thomisid Misumena vatia, for which the substrate colour affects the body colour, vision seems to mediate morphological colour changes. However, nothing is known about which component of visual signals from the substrate might be perceived, nor whether M. vatia possesses the physiological basis for colour vision. The aim of this study is thus to investigate the vision of this spider species by measuring the spectral sensitivities of the different pairs of eyes using electrophysiological methods. Extra- and intracellular electrophysiological recordings combined with selective adaptation revealed the presence of two classes of photoreceptor cells, one sensitive in the UV region of the spectrum (around 340 nm) and one sensitive in the green (around 520 nm) regions in the four pairs of eyes. We conclude that M. vatia possesses the physiological potential to perceive both chromatic and achromatic components of the environment. (C) 2011 Elsevier Ltd. All rights reserved.

Publiceringsår

2011

Språk

Engelska

Sidor

508-513

Publikation/Tidskrift/Serie

Journal of Insect Physiology

Volym

57

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Zoology

Nyckelord

  • Vision
  • Spectral sensitivities
  • Crab spider
  • Misumena vatia
  • Mimetism
  • Crypsis

Status

Published

Forskningsgrupp

  • Lund Vision Group

ISBN/ISSN/Övrigt

  • ISSN: 1879-1611