城市化发展对蜚蠊群落结构的影响及其防制对策研究

Studies on the Effects of Urbanization on the Cockroaches Communities and the Control Countermeasures in Suzhou

目的了解城市化发展对室内蜚蠊群落的影响。方法粘捕盒法。结果2004-2005年,苏州市城区室内蜚蠊平均密度为0.53只/(盒.夜),德国小蠊、美洲大蠊和黑胸大蠊的构成比分别为80.30%、17.04%和2.66%;1997-2001年为0.05只/(盒.夜),3种蜚蠊的构成比依次为86.69%、7.37%和5.95%,两个时间段蜚蠊密度与构成比差异均有统计学意义(u=15.19,P<0.05;P<0.01)。2004-2005年,老城区蜚蠊平均密度为0.49只/(盒.夜),德国小蠊、美洲大蠊和黑胸大蠊的构成比分别为75.71%、22.31%和1.98%,新建城区平均密度为0.58只/(盒.夜),3种蜚蠊的构成比依次为84.52%、12.19%和3.28%,老城区与新建城区的密度和构成比差异同样具有统计学意义(u=7.66,P<0.01)。结论城市化发展包括城区改造、面积扩大和人口增长,对蜚蠊群落结构和数量有较大影响。

Objective To understand the effects of urbanization on the communities＇ structure of the cockroaches in Suzhou. Methods Sticky traps nightly method. Results The average density of the indoor cockroaches was 0.53 pest/trap from 2004 to 2005, and it was 0.05 pest]trap from 1997 to 2001. The proportion of Blattella germanica, Periplaneta americana and P. fuliginosa were 80.30% , 17.04 % and 2.66% respectively in 2004 - 2005, and in 1997 - 2001 they were 86.69 %, 7.37 % and 5.95 % respectively. The average density of the cockroaches was 0.49 pest/trap in the old districts from 2004 to 2005, and in the new districts it was 0.58 pest/trap. In old districts, the proportion of the three species of cockroaches were 75.71% , 22.31% and 1.98 % respectively, but in new districts they were 84.52 %, 12.19 % and 3.28 % respectively. The density and communities structures of the cockroaches were significant different in 2004 - 2005 from those in 1997 - 2001 （P 〈 0.01）. Conclusion It indicated that urbanization affected the structure and quantity of the cockroaches in Suzhou.