转基因鱼试验湖泊铜锈环棱螺种群动态及次级生产力
Population dynamics and production of Bellamya aeruginosa (Reeve)(Mollusca: Viviparidae) in artificial lake for transgenic fish, Wuhan
查看参考文献15篇
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文摘
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2008年2月至2009年1月对转基因鱼试验湖泊铜锈环棱螺的种群生态学进行了周年研究。铜锈环棱螺的平均密度和生物量分别为28.96个、m~2和17.33g/m~2，丰度最高值出现在4月（34.29个/m~2和54.51g/m~2)，其次为12月（25.1个/m~2和36.18g/m~2)。试验湖泊中铜锈环棱螺在4-7月繁殖，种群中含有4个年龄组，其中2008年龄组占绝对优势。铜锈环棱螺壳长-体重方程为：lg Ww = 2.8791 × lgSL-3.4227，使用瞬时生长法测算试验湖泊铜锈环棱螺的周年生产量，带壳湿重为12.72 g.m~(-2).a~(-1)，去壳干重为0.74 g.m~(-2).a~(-1),P/B系数为0.42。估算试验湖泊2005年至2009年铜锈环棱螺生产量（去壳干重）分别为2.24,2.49,1.50和0.74g.m~(-2).a~(-1)。多元逐步回归分析显示总氮对铜锈环棱螺的次级生产量有显著影响，转基因鲤的捕食压力也可能是影响铜锈环棱螺生产量的重要因素。 |
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其他语种文摘
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Bellamya aeruginosa (Reeve) is the predominant macrozoobenthic species and main food source in an artificial lake used for rearing transgenic common carp (Cyprinus carpio L.) with the 'all-fish' growth hormone gene constructs. Knowledge of the life history and production of B. aeruginosa are critical in assessing the predation pressure by transgenic common carp. Between February 2008 and January 2009, the population dynamics and production of B. aeruginosa were studied at monthly intervals at seven stations in the artificial lake situated in Hubei Province, China. The instantaneous growth rate method was applied to determine the production and P/B ratio of B. aeruginosa. Production over the period 2005-2008 was then compared from the calculated P/B ratios. Finally, the important environmental factors influencing production patterns were established via multiple regression analyses. During 2008-2009, annual average density and biomass (wet weight) were 28.96 ind./m~2 and 17.33 g/m~2, respectively B. aeruginosa recruitment occurred mainly between April and July. A major peak in standing crops was observed in April (34.29 ind./m~2 and 54.51 g/m~2), with a minor peak in December (25.1 ind./m~2 and 36.18 g/m~2). Based on the peaks in population density and seasonal variations in size distribution of shell-length, the B. aeruginosa population was composed of four cohorts. Growth of the 2005 cohort had nearly ceased, while individuals of the 2008 cohort grew rapidly, with an instantaneous growth rate of 2.34. The 2008, 2007 and 2006 cohorts accounted for 20.2,52.7 and 25.8% of total density, respectively. Regressions between shell-length and wet weight (Ww) was lg Ww=2.8791xlgSL-3.4227 (n=96, P<0.001). To reduce the error, the growth curves of each cohort (P<0.05) were also fitted. Using the instantaneous growth rate method, the annual production of B. aeruginosa was calculated at 12.72 g?m~(-2), a~(-1) (wet weight) or 0.74 g?m~(-2) a~(-1) (dry weight without shell), with a P/B ratio of 0.42. Annual production (wet weight) for the 2008, 2007 and 2006 cohorts were 6.40 (P/B ratio=2.33), 1.99 (0.13) and 4.33 (0.37) g.m~(-2).a~(-1), respectively. Annual production of the 2008 cohort was ignored because it was only composed of a few aging individuals. Usingthe P/B ratios, annual production (dry weight without shell) for the 4-year period (2005-2009) was calculated as 2.24, 2.49,1.50 and 0.74 g.m~(-2).a~(-1), respectively, showing a significant steady reduction (F=4.497, P= 0.013). Pearson correlation analysis indicated that water transparency (SD), total nitrogen (TN), nitrate nitrogen (NO~-_3-N) were positively correlated with production (dry weight without shell) (P < 0.001) and stepwise regression analysis showed that TN was the key factor influencing production (F=7.632, P=0.009). Water trophic levels and predation pressure by transgenic common carp appear to be responsible for the fluctuations in annual production of B. aeruginosa in this artificial lake. High-level of nutrients may significantly increase B. aeruginosa production, while selective feeding by transgenic common carp had the opposite effect. However, whether production in the artificial lake will continue to decrease with the growth of transgenic common carp requires further research. |
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来源
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生态学报
,2011,31(23):7112-7118 【核心库】
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关键词
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铜锈环棱螺
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次级生产量
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瞬时增长率法
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P/B系数
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转基因鱼试验湖泊
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地址
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中国科学院水生生物研究所, 武汉, 430072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0933 |
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学科
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动物学 |
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基金
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国家高技术研究发展计划
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国家973计划
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文献收藏号
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CSCD:4389326
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参考文献 共
15
共1页
|
|
1.
Zhu Z Y. Primary-structural and evolutionary analyses of growth-hormone gene from grass carp (Ctenopharyngodon idellus).
European Journal of Biochemistry,1992,207:643-648
|
被引
3
次
|
|
|
|
|
2.
Devlin R H. Increased ability to compete for food by growth hormone-transgenic coho salmon Oncorhynchus kisutch (Walbaum).
Aquaculture Research,1999,30(7):479-482
|
被引
6
次
|
|
|
|
|
3.
熊晶. 转基因鲤鱼对大型底栖动物群落及多样性的影响.
长江流域资源与环境,2010,19(4):377-382
|
被引
4
次
|
|
|
|
|
4.
舒少武.
人工试验湖泊中转GH基因鲤鱼生物学特性的初步研究,2009:25-80
|
被引
1
次
|
|
|
|
|
5.
闫云君. 水生大型无脊椎动物的干湿重比的研究.
华中理工大学学报,1999,27(9):61-63
|
被引
12
次
|
|
|
|
|
6.
Ricker W. Production and utilization of fish populations.
Ecological Monographs,1946:373-391
|
被引
1
次
|
|
|
|
|
7.
国家环境保护总局《水和废水监测分析方法》编委会编.
水和废水监测分析方法（第四版）,2002:88-284
|
被引
1
次
|
|
|
|
|
8.
闫云君. 武汉后湖铜锈环棱螺的周年生产量.
湖泊科学,2000,12(1):68-72
|
被引
8
次
|
|
|
|
|
9.
闫云君. 扁担塘螺类生产力的研究 I。铜锈环棱螺的周年生产量.
水生生物学报,1999,23(4):346-351
|
被引
5
次
|
|
|
|
|
10.
龚志军. 武汉东湖铜锈环棱螺的种群动态及次级生产力.
湖泊科学,2009,21(3):401-407
|
被引
7
次
|
|
|
|
|
11.
陈其羽. 武汉东湖铜锈环棱螺种群变动和生产量的初步观察.
水生生物学报,1987,11(2):117-130
|
被引
13
次
|
|
|
|
|
12.
Dolbeth M. Short-and long-term effects of eutrophication on the secondary production of an intertidal macrobenthic community.
Marine Biology,2003,143(6):1229-1238
|
被引
5
次
|
|
|
|
|
13.
. Effects of different N-and P-loading on primary and secondary production in an experimental marine ecosystem.
Aquatic Ecology,1999,33(1):65-81
|
被引
1
次
|
|
|
|
|
14.
Cross W F. Whole-system nutrient enrichment increases secondary production in a detritus-based ecosystem.
Ecology,2006,87(6):1556-1565
|
被引
2
次
|
|
|
|
|
15.
Englund R. The impacts of introduced poeciliid fish and Odonata on the endemic Megalagrion (Odonata) damselflies of Oahu Island, Hawaii.
Journal of Insect Conservation,1999,3(3):225-243
|
被引
1
次
|
|
|
|
|
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