@Article{SantosLSFLMCS:2018:SuGeDa,
author = "Santos, Caroline Peripolli dos and Londero, James Eduardo Lago and
Santos, Maur{\'{\i}}cio Beux dos and Feltrin, Rayana dos Santos
and Loebens, Luiza and Moura, Livia Bataioli and Cechin, Sonia
Zanini and Schuch, Andr{\'e} Passaglia",
affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal de Santa Maria (UFSM)}
and {Universidade Federal de Santa Maria (UFSM)} and {Universidade
Federal de Santa Maria (UFSM)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Sunlight-induced genotoxicity and damage in keratin structures
decrease tadpole performance",
journal = "Journal of Photochemistry and Photobiology B: Biology",
year = "2018",
volume = "181",
pages = "134--142",
month = "Apr.",
keywords = "UV radiation, DNA damage, DNA repair, Keratin damage, Mortality,
Amphibian decline.",
abstract = "The increased incidence of solar ultraviolet (UV) radiation, an
environmental genotoxic agent, due to ozone depletion or
deforestation may help to explain the enigmatic decline of
amphibian populations in specific localities. In this work, we
evaluated the importance of DNA repair performed by photolyases to
maintain the performance of treefrog tadpoles after acute and
chronic treatments with environmental-simulated doses of solar UVB
and UVA radiation. Immediately after UV treatments, tadpoles were
exposed to a visible light source to activate photolyases or kept
in dark containers. The biological effects of UV treatments were
evaluated through morphological, histological, locomotor and
survival analyzes of Boana pulchella tadpoles (Anura: Hylidae).
The results indicate that tadpole body weight suffered influence
after both UVB and UVA treatments, although the body length was
bit affected. The locomotor performance of UVB-exposed tadpoles
was significantly reduced. In addition, UVB radiation induced a
severe impact on tadpole skin, as well as on keratinized
structures of mouth (tooth rows and jaw), indicating that these
should be important effects of solar UV radiation in the reduction
of tadpole performance. Furthermore, photolyases activation was
fundamental for the maintenance of tadpole performance after
chronic UVB exposures, but it was relatively inefficient after
acute exposures to UVB, but not to UVA radiation. Therefore, this
work demonstrates how the UV-induced genotoxicity and structural
alterations in the skin and oral apparatus affect tadpole
performance and survival.",
doi = "10.1016/j.jphotobiol.2018.03.013",
url = "http://dx.doi.org/10.1016/j.jphotobiol.2018.03.013",
issn = "1011-1344",
language = "en",
targetfile = "santos_sunligth.pdf",
urlaccessdate = "28 mar. 2024"
}