Abstract
Ozone depletion induced by anthropogenic gases has been increasing the transmission of solar ultraviolet-B radiation (UV-B, 280–315 nm) through the atmosphere, which may impact the fitness of marine invertebrates in intertidal and shallow waters. To our knowledge, however, the responses of fitness related behaviors to UV-B radiation at different intensities have been rarely studied in marine invertebrates. For the first time, the present study investigated the effects of exposure of one hour to UV-B radiation at different intensities on foraging behavior, Aristotle’s lantern reflex and righting behavior of the sea urchin Strongylocentrotus intermedius. Exposure of one hour to UV-B radiation at 10 μW/cm2 significantly reduced foraging behavior. An intensity dependent effect of exposure to UV-B radiation was found in the duration of the Aristotle’s lantern reflex. Exposure to UV-B radiation at 20 μW/cm2 for one hour significantly reduced the duration of the Aristotle’s lantern reflex, but 10 μW/cm2 did not. There was no significant difference of righting response time among sea urchins exposed to 0, 10 and 20 μW/cm2 for one hour. To test potential carryover effects, the behavioral traits were re-measured three days later. We found significant carryover effects of UV-B radiation on foraging time and righting response time, but not on the duration of the Aristotle’s lantern reflex. The present study indicates that a brief exposure of one hour to UV-B radiation can significantly affect the duration of Aristotle’s lantern reflex, righting response time and foraging behavior of a sea urchin, although the immediate impacts and carryover effects were highly trait dependent. This study provides new information into the behavioral responses of marine invertebrates to exposure to UV-B radiation. Future studies should be carried out to investigate long-term carryover effects of UV-B radiation on behavioral and physiological fitness related traits.
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We thank Prof. John LAWRENCE for editorial suggestions. All authors do not have any conflict of interest.
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Supported by the National Natural Science Foundation of China (No. 41506177), the Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, China (No. 2017-1B05), the Chinese Outstanding Talents in Agricultural Scientific Research (for Chang Y), the Liaoning Department of Science and Technology (No. 2015203003), and the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province (No. 2015006)
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Shi, D., Ding, J., Zhang, L. et al. Effects of UV-B radiation on fitness related behaviors of the sea urchin Strongylocentrotus intermedius. J. Ocean. Limnol. 36, 1681–1687 (2018). https://doi.org/10.1007/s00343-018-7211-9
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DOI: https://doi.org/10.1007/s00343-018-7211-9