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@Article{LonderoSantSegaSchu:2017:ImUVRa,
               author = "Londero, James Eduardo Lago and Santos, Caroline Peripolli dos and 
                         Segatto, Ana L{\'u}cia Anversa and Schuch, Andr{\'e} Passaglia",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         de Santa Maria (UFSM)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Impacts of UVB radiation on food consumption of forest specialist 
                         tadpoles",
              journal = "Ecotoxicology and Environmental Safety",
                 year = "2017",
               volume = "143",
                pages = "12--18",
                month = "Sept.",
             keywords = "Amphibian decline, DNA damage, DNA repair, Sunlight, Treefrog, 
                         Weight loss.",
             abstract = "Solar ultraviolet radiation B (UVB) is an important environmental 
                         stressor for amphibian populations due to its genotoxicity, 
                         especially in early developmental stages. Nonetheless, there is an 
                         absence of works focused on the UVB effects on tadpoles food 
                         consumption efficiency. In this work, we investigated the effects 
                         of the exposure to a low environmental-simulated dose of UVB 
                         radiation on food consumption of tadpoles of the forest specialist 
                         Hypsiboas curupi [Hylidae, Anura] species. After UVB treatment 
                         tadpoles were divided and exposed to a visible light source or 
                         kept in the dark, in order to indirectly evaluate the efficiency 
                         of DNA repair performed by photolyases and nucleotide excision 
                         repair (NER), respectively. The body mass and the amount of food 
                         in tadpoles guts were verified in both conditions and these data 
                         were complemented by the micronuclei frequency in blood cells. 
                         Furthermore, the keratinized labial tooth rows were analyzed in 
                         order to check for possible UVB-induced damage in this structure. 
                         Our results clearly show that the body weight decrease induced by 
                         UVB radiation occurs due to the reduction of tadpoles food 
                         consumption. This behavior is directly correlated with the 
                         genotoxic impact of UVB light, since the micronuclei frequency 
                         significantly increased after treatments. Surprisingly, the 
                         results indicate that photoreactivation treatment was ineffective 
                         to restore the food consumption activity and body weight values, 
                         suggesting a low efficiency of photolyases enzymes in this 
                         species. In addition, UVB treatments induced a higher number of 
                         breaks in the keratinized labial tooth rows, which could be also 
                         associated with the decrease of food consumption. This work 
                         contributes to better understand the process of weight loss 
                         observed in tadpoles exposed to UVB radiation and emphasizes the 
                         susceptibility of forest specialist amphibian species to 
                         sunlight-induced genotoxicity.",
                  doi = "10.1016/j.ecoenv.2017.05.002",
                  url = "http://dx.doi.org/10.1016/j.ecoenv.2017.05.002",
                 issn = "0147-6513",
             language = "en",
           targetfile = "londero_impacts.pdf",
        urlaccessdate = "23 nov. 2020"
}


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