Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Lundsgaard, N. U., Cramp, R. L., & Franklin, C. E. (2021). Ultraviolet-b irradiance and cumulative dose combine to determine performance and survival. Journal of Photochemistry and Photobiology B: Biology, 222, 112276. Added by: Sarina (2021-08-03 06:49:59) Last edited by: Sarina (2021-08-03 06:50:25) |
| Resource type: Journal Article DOI: https://doi.org/10.1016/j.jphotobiol.2021.112276 ID no. (ISBN etc.): 1011-1344 BibTeX citation key: Lundsgaard2021 View all bibliographic details  |
Categories: Englisch = English Keywords: Amphibien = Amphibians, Ultraviolett = Ultraviolet Creators: Cramp, Franklin, Lundsgaard Collection: Journal of Photochemistry and Photobiology B: Biology |
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Despite decades of research, the role of elevated solar ultraviolet-B radiation (UVBR; 280–315 nm) in shaping amphibian populations remains ambiguous. These difficulties stem partly from a poor understanding of which parameters of UVBR exposure - dose, irradiance, and time interval - determine UVBR exposure health risk, and the potentially erroneous assumption that effects are proportional to the dose of exposure, irrespective of the administered regime (Bunsen-Roscoe Law of Reciprocity; BRL). We tested if the BRL holds with respect to UVBR-induced physiological effects in amphibians by acutely exposing tadpoles of the Australian green tree frog (Litoria caerulea) to a combination of different UVBR irradiances and doses in a fully factorial experiment. The BRL was invalid across all metrics assessed, with UVBR irradiance influencing the effects of a given dose on growth, coloration and burst swimming performance of larvae. We demonstrated some of the first empirical evidence for beneficial physiological effects of UVBR exposure in a larval amphibian, with improvements in growth, burst swimming performance and survival at the highest UVBR doses, contrary to hypotheses. Our findings demonstrate the species-specific nature of amphibian responses to UVBR, and the importance of UVBR irradiance in influencing the long-term physiological effects of a given dose of radiation. This work enhances our understanding of which parameters of complex UVBR exposures determine amphibian health risk.
Added by: Sarina |