A small increase in UV-B increases the susceptibility of tadpoles to predation

Alton, Lesley A., Wilson, Robbie S. and Franklin, Craig E. (2011) A small increase in UV-B increases the susceptibility of tadpoles to predation. Proceedings of the Royal Society B-Biological Sciences, 278 1718: 2575-2583. doi:10.1098/rspb.2010.2368

Author Alton, Lesley A.
Wilson, Robbie S.
Franklin, Craig E.
Title A small increase in UV-B increases the susceptibility of tadpoles to predation
Journal name Proceedings of the Royal Society B-Biological Sciences   Check publisher's open access policy
ISSN 0962-8452
Publication date 2011-09
Sub-type Article (original research)
DOI 10.1098/rspb.2010.2368
Volume 278
Issue 1718
Start page 2575
End page 2583
Total pages 9
Place of publication London, U.K.
Publisher The Royal Society Publishing
Collection year 2012
Language eng
Formatted abstract
Increased ultraviolet-B (UV-B) radiation as a consequence of ozone depletion is one of the many potential drivers of ongoing global amphibian declines. Both alone and in combination with other environmental stressors, UV-B is known to have detrimental effects on the early life stages of amphibians, but our understanding of the fitness consequences of these effects remains superficial. We examined the independent and interactive effects of UV-B and predatory chemical cues (PCC) on a suite of traits of Limnodynastes peronii embryos and tadpoles, and assessed tadpole survival time in a predator environment to evaluate the potential fitness consequences. Exposure to a 3 to 6 per cent increase in UV-B, which is comparable to changes in terrestrial UV-B associated with ozone depletion, had no effect on any of the traits measured, except survival time in a predator environment, which was reduced by 22 to 28 per cent. Exposure to PCC caused tadpoles to hatch earlier, have reduced hatching success, have improved locomotor performance and survive for longer in a predator environment, but had no effect on tadpole survival, behaviour or morphology. Simultaneous exposure to UV-B and PCC resulted in no interactive effects. These findings demonstrate that increased UV-B has the potential to reduce tadpole fitness, while exposure to PCCs improves their fitness.
Keyword Amphibian declines
Ultraviolet-B radiation
Fitness consequences
Sublethal effects
Interactive effects
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online before print January 26, 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
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