| WANG Jinhe,FENG Lei,TANG Xuexi. 2011. Effect of UV-B radiation on the population dynamics of the rotifer Brachionus urceus. Acta Oceanologica Sinica, (2):113－119 |
| Effect of UV-B radiation on the population dynamics of the rotifer Brachionus urceus |
| Effect of UV-B radiation on the population dynamics of the rotifer Brachionus urceus |
| Received:February 20, 2009 Revised:July 09, 2009 |
| DOI：10.1007/s13131-011-0111-x |
| Key words:UV-B radiation marine rotifer Brachionus urceus population dynamic |
| 中文关键词: UV-B radiation marine rotifer Brachionus urceus population dynamic |
| 基金项目:The National Natural Science Foundation of China under contract Nos 30270258 and 40506028; the National High Technology Research and Development Program of China under contract No. 2002AA648010; the China Postdoctoral Science Foundation under contract No. 2005037237; the Shandong Scientific Research Encouragement Foundation for Talent Youths under contract No. 03BS120; the Doctor Scientific Research Foundation of Dongying Vocational College under contract Nos BJ0602 and KJ0804. |
| Author Name | Affiliation | E-mail | | WANG Jinhe | College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
Dong Ying City Ocean and Fishery Bureau, Dongying 257091, China | | | FENG Lei | Department of Agricultural Engineering, Dongying Vocational College, Dongying 257091, China | | | TANG Xuexi | College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China | tangxx@ouc.edu.cn |
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| Abstract: |
| The effect of UV-B radiation enhancement at experimental doses of 0.00, 0.24, 0.48, 0.72, 0.96, and 1.20 kJ/m2 on the population dynamics of the rotifer Brachionus urceus feeding on the alga Chlorella sp. was studied under controlled laboratory conditions using clonal culture and life-table techniques. The results show that UV-B radiation treatment significantly shortened the survival time of the rotifer (P <0.05):The longest survival time (336 h) occurred in the control (0.00 kJ/m2) while the shortest (222 h) occurred when exposed to the highest UV-B radiation treatment (1.20 kJ/m2). The fecundity of the rotifer B. urceus was enhanced by the lower UV-B radiation treatment (0.24 and 0.48 kJ/m2) but inhibited by the higher treatments (0.96 and 1.20 kJ/m2). Life expectancy also was obviously affected by UV-B radiation (P <0.05). The highest life expectancy occurred in the control (0.00 kJ/m2), and it became shorter with increasing doses of UV-B radiation. The resutls in the present study indicate that the life expectancy of the rotifer B. urceus can be used as an indicator for UV-B radiation enhancement. |
| 中文摘要: |
| The effect of UV-B radiation enhancement at experimental doses of 0.00, 0.24, 0.48, 0.72, 0.96, and 1.20 kJ/m2 on the population dynamics of the rotifer Brachionus urceus feeding on the alga Chlorella sp. was studied under controlled laboratory conditions using clonal culture and life-table techniques. The results show that UV-B radiation treatment significantly shortened the survival time of the rotifer (P <0.05):The longest survival time (336 h) occurred in the control (0.00 kJ/m2) while the shortest (222 h) occurred when exposed to the highest UV-B radiation treatment (1.20 kJ/m2). The fecundity of the rotifer B. urceus was enhanced by the lower UV-B radiation treatment (0.24 and 0.48 kJ/m2) but inhibited by the higher treatments (0.96 and 1.20 kJ/m2). Life expectancy also was obviously affected by UV-B radiation (P <0.05). The highest life expectancy occurred in the control (0.00 kJ/m2), and it became shorter with increasing doses of UV-B radiation. The resutls in the present study indicate that the life expectancy of the rotifer B. urceus can be used as an indicator for UV-B radiation enhancement. |
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