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		<doi>10.1016/j.ecoenv.2017.05.002</doi>
		<issn>0147-6513</issn>
		<citationkey>LonderoSantSegaSchu:2017:ImUVRa</citationkey>
		<title>Impacts of UVB radiation on food consumption of forest specialist tadpoles</title>
		<year>2017</year>
		<month>Sept.</month>
		<typeofwork>journal article</typeofwork>
		<secondarytype>PRE PI</secondarytype>
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		<author>Londero, James Eduardo Lago,</author>
		<author>Santos, Caroline Peripolli dos,</author>
		<author>Segatto, Ana Lúcia Anversa,</author>
		<author>Schuch, André Passaglia,</author>
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		<group>CRCRS-COCRE-INPE-MCTIC-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Universidade Federal de Santa Maria (UFSM)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>schuchap@gmail.com</electronicmailaddress>
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		<journal>Ecotoxicology and Environmental Safety</journal>
		<volume>143</volume>
		<pages>12-18</pages>
		<secondarymark>A1_INTERDISCIPLINAR A1_GEOGRAFIA A1_ENGENHARIAS_I A2_ZOOTECNIA_/_RECURSOS_PESQUEIROS A2_SAÚDE_COLETIVA A2_MEDICINA_VETERINÁRIA A2_GEOCIÊNCIAS A2_ENGENHARIAS_III A2_ENGENHARIAS_II A2_CIÊNCIAS_AMBIENTAIS A2_CIÊNCIAS_AGRÁRIAS_I A2_BIODIVERSIDADE B1_QUÍMICA B1_PSICOLOGIA B1_MEDICINA_II B1_MEDICINA_I B1_MATERIAIS B1_FARMÁCIA B1_CIÊNCIAS_BIOLÓGICAS_II B1_CIÊNCIAS_BIOLÓGICAS_I B1_CIÊNCIA_DE_ALIMENTOS B1_BIOTECNOLOGIA B2_NUTRIÇÃO B2_ENSINO B2_EDUCAÇÃO_FÍSICA B2_CIÊNCIAS_BIOLÓGICAS_III B2_ASTRONOMIA_/_FÍSICA B3_ANTROPOLOGIA_/_ARQUEOLOGIA</secondarymark>
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		<keywords>Amphibian decline, DNA damage, DNA repair, Sunlight, Treefrog, Weight loss.</keywords>
		<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.</abstract>
		<area>CEA</area>
		<language>en</language>
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