Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Han, B. A., Kats, L. B., Pommerening, R. C., Ferrer, R. P., Murry-Ewers, M., & Blaustein, A. R. (2007). Behavioral avoidance of ultraviolet-b radiation by two species of neotropical poison-dart frogs. Biotropica, 39(3), 433–435. Added by: Sarina (2009-03-09 13:48:12) Last edited by: Sarina (2009-03-09 13:48:34) |
| Resource type: Journal Article DOI: 10.1111/j.1744-7429.2007.00268.x BibTeX citation key: Han2007a View all bibliographic details  |
Categories: Englisch = English Keywords: Amphibien = Amphibians, Sonne = Sun, Ultraviolett = Ultraviolet Creators: Blaustein, Ferrer, Han, Kats, Murry-Ewers, Pommerening Collection: Biotropica |
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| Abstract |
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Many animals, plants, and microorganisms are harmed by ultraviolet-B radiation. In particular, several members of class amphibia are negatively affected by exposure to ultraviolet-B radiation. Exposure to ultraviolet-B radiation can cause death or various types of sublethal damage in amphibians. One mechanism to lessen the effect of harmful ultraviolet-B radiation is to limit exposure to sunlight behaviorally. Few studies have examined the behavioral sensitivity of adult amphibians to ultraviolet-B radiation. Using both field experiments and field observations, we found that two species of diurnal poison-dart frogs in Costa Rica (Dendrobates pumilio, D. auratus) consistently preferred areas in the field and within experimental testing chambers that offered low levels of ultraviolet-B radiation. In field observations, vocalizing D. pumilio were found at locations with significantly lower levels of ambient ultraviolet-B compared to random locations throughout their natural habitat. Ultraviolet-B avoidance behavior may be an important behavioral response for tropical frogs in light of recent evidence suggesting a significant increase in the levels of ambient ultraviolet-B radiation in the tropics over the past decade. Key words: amphibians; avoidance behavior; Costa Rica; lowland rain forest; poison-dart frog; UV-B. Added by: Sarina Last edited by: Sarina |