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题名: Age, growth and mortality of invasive sharpbelly, Hemiculter leucisculus (Basilewski, 1855) in Erhai Lake, China
作者: Wang, T.1; Huang, D.1; Zhao, Y.2; Wang, H.1; Hu, S.1; Shen, J.1
通讯作者: Shen, J (reprint author), Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Hubei, Peoples R China.
关键词: FISH ; REPRODUCTION ; CYPRINIDAE ; WATERS ; IRAN
刊名: JOURNAL OF APPLIED ICHTHYOLOGY
发表日期: 2013-12-01
DOI: 10.1111/jai.12287
卷: 29, 期:6, 页:1279-1285
收录类别: SCI
文章类型: Article
部门归属: [Wang, T. ; Huang, D. ; Wang, H. ; Hu, S. ; Shen, J.] Huazhong Agr Univ, Coll Fisheries, Minist Agr, Key Lab Freshwater Anim Breeding, Wuhan 430070, Hubei, Peoples R China ; [Zhao, Y.] Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Key Technologies R & D Program of China [2008ZX07105-005, 2008ZX07105-004]
类目[WOS]: Fisheries ; Marine & Freshwater Biology
研究领域[WOS]: Fisheries ; Marine & Freshwater Biology
摘要: The sharpbelly Hemiculter leucisculus, an invasive species, has expanded its range throughout much of Asia and into the Middle East. However, little is known of its adaptive changes regarding life history traits such as age, growth and mortality that could possibly explain its success as an invasive species. A detailed study of the invasive sharpbelly was conducted based on 4539 samples collected from July 2009 to June 2011 in Erhai Lake, China. Standard length ranged from 4.3-19.1cm for females and 4.6-12.3cm for males. Length-weight relationships for females and males were significantly different and described as W=0.0076SL(3.2608) and W=0.0084SL(3.1901), respectively. Otoliths are ideal for age determination because of the single annulus formed each year. Based on marginal increment analysis, the total mean CV for age estimate between two readings was 3.55%. The von Bertalanffy growth curves computed by observed length-at-age data were expressed as L-t=25.6 (1 - e(-0.176 (t+1.347))) for females and L-t=16.4 (1 - e(-0.354 (t+0.819))) for males. According to the age, growth and mortality data, there are three possible reasons for H.leucisculus attaining such dominance within a short time in Erhai Lake. First, because of the simple age structure of this species: 97.58% of males were 1-2years old with a maximum age of only 3years; 93.14% of females were 1-3years old, with a maximum age of 6years. Second, females grew larger than males at any age. Third, instantaneous mortality rates were much higher for males (4.22year(-1)) than for females (1.17year(-1)).
英文摘要: The sharpbelly Hemiculter leucisculus, an invasive species, has expanded its range throughout much of Asia and into the Middle East. However, little is known of its adaptive changes regarding life history traits such as age, growth and mortality that could possibly explain its success as an invasive species. A detailed study of the invasive sharpbelly was conducted based on 4539 samples collected from July 2009 to June 2011 in Erhai Lake, China. Standard length ranged from 4.3-19.1cm for females and 4.6-12.3cm for males. Length-weight relationships for females and males were significantly different and described as W=0.0076SL(3.2608) and W=0.0084SL(3.1901), respectively. Otoliths are ideal for age determination because of the single annulus formed each year. Based on marginal increment analysis, the total mean CV for age estimate between two readings was 3.55%. The von Bertalanffy growth curves computed by observed length-at-age data were expressed as L-t=25.6 (1 - e(-0.176 (t+1.347))) for females and L-t=16.4 (1 - e(-0.354 (t+0.819))) for males. According to the age, growth and mortality data, there are three possible reasons for H.leucisculus attaining such dominance within a short time in Erhai Lake. First, because of the simple age structure of this species: 97.58% of males were 1-2years old with a maximum age of only 3years; 93.14% of females were 1-3years old, with a maximum age of 6years. Second, females grew larger than males at any age. Third, instantaneous mortality rates were much higher for males (4.22year(-1)) than for females (1.17year(-1)).
关键词[WOS]: FISH ; REPRODUCTION ; CYPRINIDAE ; WATERS ; IRAN
语种: 英语
WOS记录号: WOS:000327212000016
ISSN号: 0175-8659
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19783
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Huazhong Agr Univ, Coll Fisheries, Minist Agr, Key Lab Freshwater Anim Breeding, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
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