Urban Entomology Laboratory, Vector Control Research Unit, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
J Med Entomol. 2011 Jul;48(4):797-805. doi: 10.1603/me10255.
The population size, age-class structure, and movement of the American cockroach, Periplaneta americana (L.) (Dictyoptera: Blattidae), were studied in three sewers in Penang, Malaysia, from September 2008 to October 2009. Eighteen to 20 glass-jar traps (two per manhole) were deployed for a 24-h period during each sampling occasion at each sewer. Adults and nymphs were active throughout the study period, with an average monthly trap catch of 57-97 adults and 79-99 nymphs. The mean proportions of adults and nymphs at the three sewers ranged from 0.47 to 0.57. Of the 2177 male and 2717 female cockroaches marked and released over the three sewers, recapture rates were 29.4-45.8 and 30.8-47.0%, respectively. The proportion of marked males and females did not differ significantly from the proportion of recaptured marked males and females. However, the mean number of times a marked female was recaptured was significantly greater than that of males. Of the 783 males and 1,030 females that were marked and recaptured, 19.4 and 24.7%, respectively, had moved between manholes, and significantly more females than males moved between manholes. Of the 406 recaptured marked adults that moved between manholes, 90.4% moved a distance of 2-20 m from their initial release site; one male moved 192 m, the longest distance recorded. Trap catch on each sampling occasion was positively correlated with daily mean temperature. The number of cockroach movements between manholes also was correlated with the mean daily minimum temperature.
本研究于 2008 年 9 月至 2009 年 10 月在马来西亚槟城的 3 个下水道中对美洲大蠊（Periplaneta americana）（直翅目：蜚蠊科）的种群大小、年龄结构和移动进行了研究。在每个下水道的每个采样点，每个检查井部署了 18-20 个玻璃罐陷阱（每个检查井 2 个），持续 24 小时。在整个研究期间，成虫和若虫均活跃，平均每月每个陷阱捕获 57-97 只成虫和 79-99 只若虫。三个下水道的成虫和若虫的平均比例范围为 0.47 至 0.57。在三个下水道中标记和释放的 2177 只雄性和 2717 只雌性蟑螂中，回收率分别为 29.4-45.8%和 30.8-47.0%。标记的雄性和雌性的比例与回收的标记雄性和雌性的比例无显著差异。然而，标记雌性被回收的平均次数明显大于雄性。在标记和回收的 783 只雄性和 1030 只雌性中，分别有 19.4%和 24.7%发生了从一个检查井到另一个检查井的移动，且雌性比雄性更多地发生了从一个检查井到另一个检查井的移动。在 406 只从一个检查井移动到另一个检查井的标记成虫中，90.4%的移动距离为 2-20 米，其中一只雄性移动了 192 米，这是记录到的最长距离。每次采样时的诱捕器捕获量与日平均温度呈正相关。在检查井之间的蟑螂移动次数也与每日最低平均温度相关。
