Effects of UV-B radiation on fitness related behaviors of the sea urchin Strongylocentrotus intermedius  

作　　者：SHI Dongtao DING Jingyun ZHANG Lingling ZHANG Lisheng SUN Jiangnan CHANGYaqing ZHAO Chong 施栋涛;丁靖芸;张玲玲;张立胜;孙江南;常亚青;赵冲(Key Laboratory of Mariculture & Stock Enhancement in North China's Sea,Ministry of Agriculture,Dalian Ocean University)

机构地区：Key Laboratory of Mariculture ＆ Stock Enhancement in North China＇s Sea,Ministry of Agriculture,Dalian Ocean University Dalian 116023,China

出　　处：《Journal of Oceanology and Limnology》2018年第5期1681-1687,共7页海洋湖沼学报（英文）

基　　金：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);the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province(No.2015006)

摘　　要：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 eff ects 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/cm^2 significantly reduced foraging behavior. An intensity dependent eff ect 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/cm^2 for one hour significantly reduced the duration of the Aristotle's lantern reflex, but 10 μW/cm^2 did not. There was no significant diff erence of righting response time among sea urchins exposed to 0, 10 and 20 μW/cm^2 for one hour. To test potential carryover ef fects, the behavioral traits were re-measured three days later. We found significant carryover eff ects 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 aff ect the duration of Aristotle's lantern reflex, righting response time and foraging behavior of a sea urchin, although the immediate impacts and carryover eff ects 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 eff ects of UV-B radiation on behavioral and physiological fitness related traits.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 eff ects 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/cm^2 significantly reduced foraging behavior. An intensity dependent eff ect 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/cm^2 for one hour significantly reduced the duration of the Aristotle＇s lantern reflex, but 10 μW/cm^2 did not. There was no significant diff erence of righting response time among sea urchins exposed to 0, 10 and 20 μW/cm^2 for one hour. To test potential carryover ef fects, the behavioral traits were re-measured three days later. We found significant carryover eff ects 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 aff ect the duration of Aristotle＇s lantern reflex, righting response time and foraging behavior of a sea urchin, although the immediate impacts and carryover eff ects 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 eff ects of UV-B radiation on behavioral and physiological fitness related traits.

关 键 词：sea urchin UV-B foraging behavior righting behavior Aristotle＇s lantern reflex FITNESS 

分 类 号：P421.33[天文地球—大气科学及气象学] TQ658.24[化学工程—精细化工]