中国寄生虫学与寄生虫病杂志 ›› 2008, Vol. 26 ›› Issue (1): 9-45.

• 现场研究 • 上一篇    下一篇

湖沼型地区钉螺种群的空间格局分析

周艺彪1, 陈更新2, 彭文祥1, 张志杰1, 庄建林1, 崔道永2, 倪映2, 赵根明1, 韦建国1, 姜庆五1 *   

  1. 1 复旦大学公共卫生学院流行病学教研室, 公共卫生安全教育部重点实验室, 上海 200032;
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-02-28 发布日期:2008-02-28
  • 通讯作者: 姜庆五

Spatial Distribution Pattern of Oncomelania hupensis Population in Marshland and Lake Area

ZHOU Yi-biao1, CHEN Geng-xin2, PENG Wen-xiang1, ZHANG Zhi-jie1, ZHUANG Jian-lin1, CUI Dao-yong2, NI Ying2, ZHAO Gen-ming1, WEI Jian-guo1, JIANG Qing-wu1 *   

  1. 1 Department of Epidemiology, School of Public Health, Fudan University-Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China; 2 Guichi Anti-Schistosomiaisis Station, Guichi, 247000, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-02-28 Published:2008-02-28
  • Contact: JIANG Qing-wu

摘要:

目的 探讨湖沼型地区钉螺种群的空间格局。 方法 2005年10月、 2006年4月及11~12月, 随机选取安徽省池州市贵池区秋浦河沿岸的4块滩地设框查螺, 分别计算钉螺的平均拥挤度(m*)、 平均密度(m)、 聚集指标[包括: 扩散系数(C)、 扩散型指数(Iδ)和聚集度指数(m*/m)]、 Taylor的(lg S2-lg m)回归指数以及Iwao的m*-m回归指数。 结果 不同时间4块滩地钉螺的C、 Iδ和m*/m指数均>1; Taylor的lg S2-lg m回归指数中的lg m与lg S2有明显的线性关系(r=0.972, P<0.01), lg a=0.602, b=1.427; Iwao的m*-m回归指数中的 m*与m呈明显的线性关系(r=0.984, P<0.01), α=2.367, β=1.617。 结论 湖沼型地区钉螺种群的空间格局为聚集分布, 分布的基本成分是个体群。

关键词: 钉螺, 种群生态学, 空间格局, 湖沼型

Abstract: Objective To explore the spatial pattern of the distribution of Oncomelania hupensis population in marshland and lake region. Methods Four bottomlands were selected randomly for the investigation along the Qiupu River in Guichi District, Anhui Province. The quadrats were placed randomly for snail survey, and the mean crowding, mean density, aggregation indices (diffusion coefficient(C), morisita index(Iδ), index of patchiness(m*/m) ), Taylor’s power law and Iwao’s m*-m regression index were analyzed. Results For 4 bottomlands in different time, the diffusion coefficients, Morisita indices, and m*/m indices were all more than one. There was a close linear relationship between the logarithm of the snail density and its variance (P<0.01), and the correlation coefficient was 0.972. In Taylor’s power law, the lg a was 0.602 and b was 1.427. There was a close linear relationship between the mean crowding(m*) and the snail density(m) (P<0.01), and the correlation coefficient, α and β was 0.984, 2.367 and 1.617 respectively. Conclusion The spatial pattern of Oncomelania hupensis population shows an aggregation distribution in marshland and lake region, and the basic components of snail distribution are in colonies.

Key words: Oncomelania hupensis, Population ecology, Spatial pattern, Marshland