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题名: Grazing on toxic cyanobacterial blooms by tadpoles of edible frog Rana grylio
作者: Zhang, Xiaoming1; Song, Lirong2; Zhang, Pengcheng1; He, Jiawan2; Liu, Yongding2; Matsuura, Hiroshi1; Watanabe, Makoto M.1
通讯作者: Zhang, XM (reprint author), Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan
关键词: blue-green algae ; cyanobacterial bloom ; grazing ; microcystin ; Microcystis ; pond ; tadpole ; trophic relationship
刊名: PHYCOLOGICAL RESEARCH
发表日期: 2012
DOI: 10.1111/j.1440-1835.2011.00627.x
卷: 60, 期:1, 页:20-26
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Xiaoming; Zhang, Pengcheng; Matsuura, Hiroshi; Watanabe, Makoto M.] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan; [Song, Lirong; He, Jiawan; Liu, Yongding] Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: K. C. Wang Education Foundation, Hong Kong, Chinese Academy of Sciences; Japanese Government, Science and Technology Agency
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Tadpoles of Rana grylio were raised as edible frogs in fishponds of Guanqiao in Wuhan City, Hubei, China, during cyanobacterial blooms from June to October. The dominant cyanobacterial species was Microcystis, which was found to be lethally toxic by intraperitoneal (i.p.) mouse bioassay. Little is known about the effect of tadpoles on toxic cyanobacterial blooms. To evaluate the potential of the tadpoles to graze on cyanobacterial blooms, the tadpoles were fed on Microcystis collected from the field in the laboratory. The Microcystis cells decreased from 1.19 x 107 cells mL-1 to 3.23 x 106 cells mL-1, with a sharp reduction of 73% of the initial Microcystis population observed in the first 24 h after introduction of the tadpoles. The ponds containing tadpoles had a markedly lower density of Microcystis than those lacking tadpoles. Tadpoles exposed to either cultured Microcystis aeruginosa (NIES-90, 2.768 mu g microcystins mg1 dw1) cells or lysed M. aeruginosa cells grew well, however, indicating that they were unaffected by Microcystis toxins. We found a significant increase in tadpole body weight after feeding on either field Microcystis or cultured M. aeruginosa. The mean increase in individual body weight was 20 mg day-1 when fed on Microcystis from the pond, and 7 mg day-1 when fed on M. aeruginosa from culture. Our study strongly suggested that there is a direct trophic relationship between R. grylio tadpoles and toxic Microcystis blooms and they possess the potential to graze on toxic Microcystis. The results imply that R. grylio tadpoles may play an important ecological role in reducing toxic cyanobacterial blooms caused by Microcystis.
英文摘要: Tadpoles of Rana grylio were raised as edible frogs in fishponds of Guanqiao in Wuhan City, Hubei, China, during cyanobacterial blooms from June to October. The dominant cyanobacterial species was Microcystis, which was found to be lethally toxic by intraperitoneal (i.p.) mouse bioassay. Little is known about the effect of tadpoles on toxic cyanobacterial blooms. To evaluate the potential of the tadpoles to graze on cyanobacterial blooms, the tadpoles were fed on Microcystis collected from the field in the laboratory. The Microcystis cells decreased from 1.19 x 107 cells mL-1 to 3.23 x 106 cells mL-1, with a sharp reduction of 73% of the initial Microcystis population observed in the first 24 h after introduction of the tadpoles. The ponds containing tadpoles had a markedly lower density of Microcystis than those lacking tadpoles. Tadpoles exposed to either cultured Microcystis aeruginosa (NIES-90, 2.768 mu g microcystins mg1 dw1) cells or lysed M. aeruginosa cells grew well, however, indicating that they were unaffected by Microcystis toxins. We found a significant increase in tadpole body weight after feeding on either field Microcystis or cultured M. aeruginosa. The mean increase in individual body weight was 20 mg day-1 when fed on Microcystis from the pond, and 7 mg day-1 when fed on M. aeruginosa from culture. Our study strongly suggested that there is a direct trophic relationship between R. grylio tadpoles and toxic Microcystis blooms and they possess the potential to graze on toxic Microcystis. The results imply that R. grylio tadpoles may play an important ecological role in reducing toxic cyanobacterial blooms caused by Microcystis.
关键词[WOS]: BLUE-GREEN-ALGAE ; CARP HYPOPHTHALMICHTHYS-MOLITRIX ; MICROCYSTIS-AERUGINOSA ; OREOCHROMIS-NILOTICUS ; CENTRAL CHINA ; NONTOXIC STRAINS ; PEPTIDE ; LARVAE ; FISH ; LAKE
语种: 英语
WOS记录号: WOS:000299101300002
ISSN号: 1322-0829
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16779
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China

Recommended Citation:
Zhang, Xiaoming; Song, Lirong; Zhang, Pengcheng; He, Jiawan; Liu, Yongding; Matsuura, Hiroshi; Watanabe, Makoto M..Grazing on toxic cyanobacterial blooms by tadpoles of edible frog Rana grylio,PHYCOLOGICAL RESEARCH,2012,60(1):20-26
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