Urban Entomology Laboratory, Vector Control Research Unit, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
J Med Entomol. 2012 May;49(3):451-60. doi: 10.1603/me11163.
The life history characteristics of the rove beetle Paederus fuscipes Curtis were studied under laboratory conditions using three field strains from Malaysia: Desa Wawasan (DW), Sri Pinang (SP), and Ampang Jajar (AJ). The total development time of immature stages differed significantly among the three strains, especially between DW (17.43 +/- 0.16 d), SP (18.60 +/- 0.19 d), and AJ (18.68 +/- 0.22 d). Adult females and males from DW also exhibited a shorter life span, although the difference among strains was not significant. In terms of fecundity, the numbers of eggs laid per female for DW, SP, and AJ were 121.28 +/- 15.98, 127.30 +/- 18.01, and 147.45 +/- 17.12, respectively. Additionally, because of the shorter life span in DW strain, two apparent peaks in age-stage specific fecundity were detected. The beetles compensated for their shorter life span by increasing their reproductive activity to sustain the progeny in the population. The intrinsic rates of increase (r) of P. fuscipes from DW, SP, and AJ were 0.0773 +/- 0.0046 d(-1), 0.0788 +/- 0.0051 d(-1), and 0.0873 +/- 0.0054 d(-1), respectively; and the net reproduction rates (R0) were 40.09 +/- 7.39 offspring, 45.29 +/- 8.74 offspring, and 42.34 +/- 8.25 offspring, respectively. The mean generation time of P. fuscipes from AJ was 43.08 +/- 1.07 d, which was significantly higher than that from DW (47.95 +/- 1.36 d) and SP (48.57 +/- 1.43 d). The total immature development time of P. fuscipes in this study was shorter than values reported in previous studies.
在实验室条件下，使用来自马来西亚的三个野外种群（ Desa Wawasan [DW]、Sri Pinang [SP] 和 Ampang Jajar [AJ]）研究了拟步甲 Paederus fuscipes Curtis 的生活史特征。三个种群之间的幼期总发育时间存在显著差异，尤其是 DW（17.43 +/- 0.16 d）、SP（18.60 +/- 0.19 d）和 AJ（18.68 +/- 0.22 d）之间的差异。DW 种群的雌性和雄性成虫的寿命也较短，尽管种群之间的差异不显著。在繁殖力方面，DW、SP 和 AJ 种群的每只雌虫产卵数分别为 121.28 +/- 15.98、127.30 +/- 18.01 和 147.45 +/- 17.12。此外，由于 DW 种群的寿命较短，检测到两个明显的龄期特化繁殖力峰值。这些甲虫通过增加生殖活动来补偿较短的寿命，以维持种群中的后代。DW、SP 和 AJ 种群的 Paederus fuscipes 的内禀增长率（r）分别为 0.0773 +/- 0.0046 d(-1)、0.0788 +/- 0.0051 d(-1)和 0.0873 +/- 0.0054 d(-1)；净生殖率（R0）分别为 40.09 +/- 7.39 只、45.29 +/- 8.74 只和 42.34 +/- 8.25 只。AJ 种群的 Paederus fuscipes 的平均世代时间为 43.08 +/- 1.07 d，明显高于 DW（47.95 +/- 1.36 d）和 SP（48.57 +/- 1.43 d）。本研究中 Paederus fuscipes 的幼期总发育时间短于以往研究报告的值。
