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....

There is an apparent contradiction between the high level of morbidity and the low level of mortality observed in certain groups of migrants living in Europe. This observation should have some consequences for health policy development and the targeting of resources in a city like Amsterdam. In this paper a number of hypotheses to explain the low mortality in migrant groups are discussed. An an...

This book is a course of lectures on the mathematics of actuarial science. The idea behind the lectures is as far as possible to deduce interesting material on contingent present values and life tables directly from calculus and common-sense notions, illustrated through word problems. Both the Interest Theory and Probability related to life tables are treated as wonderful concrete applications ...

Abstract Background Spodoptera frugiperda (JE Smith), or fall armyworm, is one of major migratory agricultural pests with a wide range hosts. The effect different hosts (maize and kidney bean) on the growth reproduction S. were investigated using age-stage, two-sex life table method. Results results showed that could complete its entire cycle both hosts, albeit significantly development reprodu...