Living in flowing water increases resistance to ultraviolet B radiation

Ghanizadeh-Kazerouni, Ensiyeh, Franklin, Craig E. and Seebacher, Frank (2017) Living in flowing water increases resistance to ultraviolet B radiation. Journal of Experimental Biology, 220 4: 582-587. doi:10.1242/jeb.151019

Author Ghanizadeh-Kazerouni, Ensiyeh
Franklin, Craig E.
Seebacher, Frank
Title Living in flowing water increases resistance to ultraviolet B radiation
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
Publication date 2017-02-15
Sub-type Article (original research)
DOI 10.1242/jeb.151019
Open Access Status Not yet assessed
Volume 220
Issue 4
Start page 582
End page 587
Total pages 6
Place of publication Cambridge, United Kingdom
Publisher Company of Biologists
Collection year 2018
Language eng
Formatted abstract
Ultraviolet B radiation (UV-B) is an important environmental driver that can affect locomotor performance negatively by inducing production of reactive oxygen species (ROS). Prolonged regular exercise increases antioxidant activities, which may alleviate the negative effects of UV-B-induced ROS. Animals naturally performing exercise, such as humans performing regular exercise or fish living in flowing water, may therefore be more resilient to the negative effects of UV-B. We tested this hypothesis in a fully factorial experiment, where we exposed mosquitofish (Gambusia holbrooki) to UV-B and control (no UV-B) conditions in flowing and still water. We show that fish exposed to UV-B and kept in flowing water had increased sustained swimming performance (Ucrit), increased antioxidant defences (catalase activity and glutathione concentrations) and reduced cellular damage (lipid peroxidation and protein carbonyl concentrations) compared with fish in still water. There was no effect of UV-B or water flow on resting or maximal rates of oxygen consumption. Our results show that environmental water flow can alleviate the negative effects of UV-B-induced ROS by increasing defence mechanisms. The resultant reduction in ROS-induced damage may contribute to maintain locomotor performance. Hence, the benefits of regular exercise are 'transferred' to improve resilience to the negative impacts of UV-B. Ecologically, the mechanistic link between responses to different habitat characteristics can determine the success of animals. These dynamics have important ecological connotations when river or stream flow changes as a result of weather patterns, climateor human modifications.
Keyword Antioxidants
Habitat modification
Reactive oxygen species
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

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