Document Detail

Effects of ultraviolet-B radiation on behaviour and growth of three species of amphibian larvae.
MedLine Citation:
PMID:  12591252     Owner:  NLM     Status:  MEDLINE    
Effects of ultraviolet-B (UV-B) radiation on amphibian embryos have been investigated in a number of studies, but the effects on larvae have received less attention. We investigated the effects of UV-B radiation on the behaviour and growth of larvae of three amphibians (Rana arvalis, Rana temporaria and Bufo bufo) in two different experiments. First, we tested whether larvae of the three species actively avoid UV-B exposure if given a choice. We found no evidence for active avoidance of UV-B or changes in activity in the presence of UV-B in any of the species. Second, we assessed the effects of natural (1.25 kJm(-2)) and enhanced (1.58 kJm(-2)) UV-B radiation on the survival and growth of the three species and found that the exposure to UV-B radiation did not have any effect on survival rates of any of the species. However, UV-B radiation had a positive effect on the growth of R. arvalis and R. temporaria, whereas the growth of B. bufo tadpoles was unaffected by the UV-B treatments. Our results suggest that a short-term exposure to UV-B radiation does not induce any UV-B avoidance behaviour in tadpoles of these three species. Furthermore, unlike some previous studies, the results suggest that the young tadpoles of these species are not negatively affected by UV-B radiation. In fact, our results demonstrate that a moderate amount of UV-B radiation enhance tadpole growth rates in two of the three species.
Maarit Pahkala; Anssi Laurila; Juha Merilä
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  51     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-02-19     Completed Date:  2003-04-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  197-204     Citation Subset:  IM    
Department of Population Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18 d, Sweden.
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MeSH Terms
Analysis of Variance
Avoidance Learning*
Behavior, Animal*
Bufo bufo
Larva / growth & development*
Rana temporaria
Species Specificity
Ultraviolet Rays / adverse effects*

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