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题名: POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS
作者: Song, Rui1, 2, 3, 4; Li, Wen X.1, 2; Wu, Shan G.1, 2; Zou, Hong1, 2; Wang, Gui T.1, 2, 4
通讯作者: Li, WX (reprint author), Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China.
关键词: LOCAL ADAPTATION ; ECOLOGY ; QUADRIGYRIDAE ; DIVERSITY ; NEMATODES ; FLUKES ; CYCLE
刊名: JOURNAL OF PARASITOLOGY
发表日期: 2014-04-01
DOI: 10.1645/12-144.1
卷: 100, 期:2, 页:193-197
收录类别: SCI
文章类型: Article
部门归属: [Song, Rui ; Li, Wen X. ; Wu, Shan G. ; Zou, Hong ; Wang, Gui T.] Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China ; [Song, Rui ; Li, Wen X. ; Wu, Shan G. ; Zou, Hong ; Wang, Gui T.] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China ; [Song, Rui] Hunan Fisheries Sci Inst, Changsha 410153, Hunan, Peoples R China ; [Song, Rui ; Wang, Gui T.] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30600459]; Earmarked Fund for China Agriculture Research System [CARS-46-08]
类目[WOS]: Parasitology
研究领域[WOS]: Parasitology
摘要: The acanthocephalan Acanthosentis cheni was found in anadromous, freshwater, and landlocked stocks of its fish host, Coilia nasus. To examine the genetic variations of the acanthocephalan among the 3 populations with the adaptation of the host to the freshwater, the genetic structure of the helminth was investigated in anadromous (Zhoushan and Chongming islands, and Anqing), freshwater (Anqing, Ezhou, and Poyang Lake), and landlocked (Tian'ezhou Reserve) populations by sequencing intergenic transcribed spacers (ITS) of the ribosomal RNA coding genes. Low F-st values and high gene flow were found among the 7 populations (F-st = 0.0135, P = 0.2723; N-m = 36.48) and the 3 ecotypes of Acanthosentis cheni (F-st = 0.0178, P = 0.1044; N-m = 27.67). On the other hand, significant genetic differentiation of the C. nasus host populations was detected between the upstream and downstream areas of Xiaogu Mountain (F-st = 0.1961, P = 0.0030; N-m = 2.05), which is the farthest location of spawning migration for C. nasus. However, the migration break of the fish host appeared not to cause significant genetic differentiation of A. cheni populations between the upper and lower reaches of Xiaogu Mountain. Other factors might promote genetic exchange of A. cheni populations such as dispersal of the intermediate host by flooding or other fish species serving as the definitive or paratenic hosts. In Anqing, nucleotide diversity of the acanthocephalan was highest in the freshwater population (0.0038) and lower in the anadromous population (0.0026). This suggested that new mutations may have occurred in the freshwater A. cheni population in Anqing when adapting to a freshwater environment.
英文摘要: The acanthocephalan Acanthosentis cheni was found in anadromous, freshwater, and landlocked stocks of its fish host, Coilia nasus. To examine the genetic variations of the acanthocephalan among the 3 populations with the adaptation of the host to the freshwater, the genetic structure of the helminth was investigated in anadromous (Zhoushan and Chongming islands, and Anqing), freshwater (Anqing, Ezhou, and Poyang Lake), and landlocked (Tian'ezhou Reserve) populations by sequencing intergenic transcribed spacers (ITS) of the ribosomal RNA coding genes. Low F-st values and high gene flow were found among the 7 populations (F-st = 0.0135, P = 0.2723; N-m = 36.48) and the 3 ecotypes of Acanthosentis cheni (F-st = 0.0178, P = 0.1044; N-m = 27.67). On the other hand, significant genetic differentiation of the C. nasus host populations was detected between the upstream and downstream areas of Xiaogu Mountain (F-st = 0.1961, P = 0.0030; N-m = 2.05), which is the farthest location of spawning migration for C. nasus. However, the migration break of the fish host appeared not to cause significant genetic differentiation of A. cheni populations between the upper and lower reaches of Xiaogu Mountain. Other factors might promote genetic exchange of A. cheni populations such as dispersal of the intermediate host by flooding or other fish species serving as the definitive or paratenic hosts. In Anqing, nucleotide diversity of the acanthocephalan was highest in the freshwater population (0.0038) and lower in the anadromous population (0.0026). This suggested that new mutations may have occurred in the freshwater A. cheni population in Anqing when adapting to a freshwater environment.
关键词[WOS]: LOCAL ADAPTATION ; ECOLOGY ; QUADRIGYRIDAE ; DIVERSITY ; NEMATODES ; FLUKES ; CYCLE
语种: 英语
WOS记录号: WOS:000335385800004
ISSN号: 0022-3395
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20042
Appears in Collections:鱼类生物学及渔业生物技术研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Hunan Fisheries Sci Inst, Changsha 410153, Hunan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Song, Rui; Li, Wen X.; Wu, Shan G.; Zou, Hong; Wang, Gui T..POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS,JOURNAL OF PARASITOLOGY,2014,100(2):193-197
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文件名: POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS.pdf
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