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dc.contributor.author Gouveia, Glauce Ribeiro
dc.contributor.author Lopes, Thais Martins
dc.contributor.author Neves, Carla Amorim
dc.contributor.author Nery, Luiz Eduardo Maia
dc.contributor.author Trindade, Gilma Santos
dc.date.accessioned 2010-10-06T18:27:28Z
dc.date.available 2010-10-06T18:27:28Z
dc.date.issued 2004
dc.identifier.citation GOUVEIA, G. R. et al. Ultraviolet radiation induces dose-dependent pigment dispersion in crustacean chromatophores. Pigment Cell Research , v. 17, p. 545-548, 2004. pt_BR
dc.identifier.issn 1755-148X
dc.identifier.uri http://repositorio.furg.br/handle/1/111
dc.description.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/cm2 for UVA and 2.15 J/cm2 for UVB. Maximal response was achieved with 10.0 J/cm2 UVA and 8.6 J/cm2 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/cm2 UVA and 0.29 J/cm2 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 against the harmful effects of UV radiation exposure. pt_BR
dc.language.iso eng pt_BR
dc.rights open access
dc.subject Ultraviolet radiation pt_BR
dc.subject Melanophore pt_BR
dc.subject Erythrophore pt_BR
dc.subject Crab pt_BR
dc.subject Shrimp pt_BR
dc.title Ultraviolet Radiation Induces Dose-Dependent Pigment Dispersion in Crustacean Chromatophores pt_BR
dc.type article pt_BR


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