Ultraviolet radiation induces dose-dependent pigment dispersion in crustacean chromatophores

Pigment Cell Research
Glauce Ribeiro GouveiaGilma Santos Trindade

Abstract

Pigment dispersion in chromatophores as a response to UV radiation was investigated in two species of crustaceans, the crab Chasmagnathus granulata and the shrimp Palaemonetes argentinus. Eyestalkless crabs and shrimps maintained on either a black or a white background were irradiated with different UV bands. In eyestalkless crabs the significant minimal effective dose inducing pigment dispersion was 0.42 J/cm(2) for UVA and 2.15 J/cm(2) for UVB. Maximal response was achieved with 10.0 J/cm(2) UVA and 8.6 J/cm(2) UVB. UVA was more effective than UVB in inducing pigment dispersion. Soon after UV exposure, melanophores once again reached the initial stage of pigment aggregation after 45 min. Aggregated erythrophores of shrimps adapted to a white background showed significant pigment dispersion with 2.5 J/cm(2) UVA and 0.29 J/cm(2) UVC. Dispersed erythrophores of shrimps adapted to a black background did not show any significant response to UVA, UVB or UVC radiation. UVB did not induce any significant pigment dispersion in shrimps adapted to either a white or a black background. As opposed to the tanning response, which only protects against future UV exposure, the pigment dispersion response could be an important agent protecting...Continue Reading

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Citations

Sep 4, 2008·Photochemistry and Photobiology·Juliana Z SandriniLuis F Marins
Nov 26, 2010·Photochemistry and Photobiology·Daza de Moraes Vaz Batista FilgueiraLuiz Eduardo Maia Nery
Apr 23, 2008·Pigment Cell & Melanoma Research·Marcelo Alves VargasLuiz Eduardo Maia Nery
Jan 12, 2010·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Marcelo Alves VargasSilvana Allodi
Feb 6, 2014·Biological Reviews of the Cambridge Philosophical Society·Kate D L UmbersMarie E Herberstein
Aug 18, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Letícia Hyoo Jung ImAna Maria de Lauro Castrucci
Apr 15, 2015·Photochemistry and Photobiology·Eliane Cristina ZeniEvelise Maria Nazari
Jan 30, 2015·Aquatic Toxicology·Gabriela HollmannSilvana Allodi
Mar 27, 2017·Biology Methods and Protocols·Andjin SiegenthalerChiara Benvenuto

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