目的 通过对内江市2011－2013年蜚蠊密度进行分析,掌握其种群结构、季节消长和不同场所密度情况,为蜚蠊防治提供科学依据。方法 在市区选择3个监测点,于2011－2013年每月中旬监测1次,采用粘捕法分别在农贸市场、餐饮、宾馆、医院和居民区不同环境进行密度、种群、季节消长和场所情况调查。结果 2011－2013年内江市共布放粘蟑纸6480张,回收6480张,捕获蜚蠊22 478只,平均密度为3.47只/张;优势种为德国小蠊,占捕获总数的98.09%;蜚蠊密度的季节消长呈双峰型,4月和7月各出现一个高峰;农贸市场平均密度最高为9.68只/张。结论 内江市的优势种为德国小蠊,蜚蠊孳生地广泛,农贸市场是重要生境,应加大对农贸市场环境综合治理,有效控制蜚蠊密度。

Objective To analyze the density of cockroaches in Neijiang, Sichuan province China, from 2011 to 2013, to understand their population structure, distribution, and seasonal dynamics, and to provide a scientific basis for cockroach prevention and control. Methods Three monitoring stations were selected in the city and the measurement was carried out monthly in the mid-month from 2011 to 2013. The population density, distribution, and seasonal fluctuation of cockroaches were determined using the sticky trap method in farm produce markets, restaurants, hotels, hospitals, and residential areas. Results From 2011 to 2013, a total of 6480 pieces of sticky traps were placed and reclaimed, and 22 478 cockroaches were captured with an average density of 3.47 cockroaches/trap. Blattella germanica was predominant and constituted 98.09% of all captured cockroaches. The cockroach density showed a bimodal seasonal fluctuation with peaks in April and July. Among all the habitats, the highest density was 9.68 cockroaches/trap found in the farm produce markets. Conclusion The predominant species of cockroaches in Neijiang is B. germanica. Cockroaches are widespread and the farm produce markets are the most important habitats of cockroaches. The comprehensive improvement of the market environment should be enhanced to effectively control the density of cockroaches.