POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS

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	POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS
	Song, Rui 1,2,3,4; Li, Wen X.1,2; Wu, Shan G.1,2; Zou, Hong 1,2; Wang, Gui T.1,2,4
刊名	JOURNAL OF PARASITOLOGY
	2014-04-01
卷号	100 期号:2 页码:193-197
关键词	LOCAL ADAPTATION ECOLOGY QUADRIGYRIDAE DIVERSITY NEMATODES FLUKES CYCLE
ISSN号	0022-3395
通讯作者	Li, WX (reprint author), Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China.
中文摘要	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.
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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Parasitology
研究领域[WOS]	Parasitology
关键词[WOS]	LOCAL ADAPTATION ; ECOLOGY ; QUADRIGYRIDAE ; DIVERSITY ; NEMATODES ; FLUKES ; CYCLE
收录类别	SCI
资助信息	National Natural Science Foundation of China [30600459]; Earmarked Fund for China Agriculture Research System [CARS-46-08]
语种	英语
WOS记录号	WOS:000335385800004
公开日期	2014-08-08
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/20042]
专题	水生生物研究所_鱼类生物学及渔业生物技术研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Song, Rui,Li, Wen X.,Wu, Shan G.,et al. POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS[J]. JOURNAL OF PARASITOLOGY,2014,100(2):193-197.
APA	Song, Rui,Li, Wen X.,Wu, Shan G.,Zou, Hong,&Wang, Gui T..(2014).POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS.JOURNAL OF PARASITOLOGY,100(2),193-197.
MLA	Song, Rui,et al."POPULATION GENETIC STRUCTURE OF THE ACANTHOCEPHALAN ACANTHOSENTIS CHENI IN ANADROMOUS, FRESHWATER, AND LANDLOCKED STOCKS OF ITS FISH HOST, COILIA NASUS".JOURNAL OF PARASITOLOGY 100.2(2014):193-197.