Life-Table Analysis of the Performance of Nilaparvata lugens (Hemiptera: Delphacidae) on Two Wild Rice Species

Abstract

Life tables of the planthopper Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) on two wild rice species, Oryza officinalis Wall, ex Watt. and Oryza rufipogon Griff., and on 'Taichung Native 1' (O. sativa indica TN1) were studied at 27 degrees C in the laboratory. The raw data were analyzed based on the age-stage, two-sex life table to take both sexes and the variable developmental rate among individuals and between sexes into consideration. The intrinsic rate of increase (r), the finite rate (lamda), the net reproduction rate (R0) and the mean generation time (T) of N. lugens on O. officinalis were -0.0616 d(-1), 0.9402 d(-1), 0.10 offspring, and 36.7 d, respectively, showing that the species is resistant to N. lugens. The resistance of O. officinalis is expressed in the long developmental time from first to fifth instar of N. lugens, the reduced preadult survival rate, the short adult longevity, and low fecundity. However, the population parameters of the N. lugens on O. rufipogon and TN1 were 0.1096 d(-1), 1.1158 d(-1), 67.82 offspring, and 38.6 d and 0.1340 d(-1), 1.1434 d(-1), 144.77 offspring, and 37.2 d, respectively. These population parameters showed that N. lugens can successfully survive and reproduce on both O. rufipogon and TN1.

Temperature‐dependent demography ofAgriphila aeneociliella(Lepidoptera:Crambidae), a new insect pest of wheat inChina

“…Although life‐table studies under different environmental conditions are a tedious and time‐consuming process, they nonetheless represent the basis for constructing an ecologically sound pest management programme (Hu et al ., ). With the increasing awareness of the importance of sustainable agriculture and environmentally friendly pest management, life‐table studies of key pests and their practical application in pest control are worth pursuing urgently.…”

Demographic Analysis of the Fitness of <I>Problepsis superans</I> (Lepidoptera: Geometridae) Feeding on Three Ligustrum (Lamiales: Oleaceae) Species

“…This life table theory takes the stage differentiation and male population into consideration. The age-stage, twosex life table theory has been applied to insect and mite species by a number of researchers (Abou Zied et al 2003, Gabre et al 2005, Kavousi et al 2009, Hu et al 2010, Farhadi et al 2011, Jin et al 2012, Ravuiwasa et al 2012, Azimi et al 2013, Yu et al 2013, Zare et al 2013.…”

Age Stage Two-Sex Life Table Reveals Sublethal Effects of Some Herbal and Chemical Insecticides on Adults ofBemisia tabaci(Hem.: Aleyrodidae)

“…(Figure 1) shows the probability that a new born pupa will survive to age and stage . In addition to survival, this curve also illustrates the stages difference, stages overlapping, and the variable developmental rate between individuals [33,38]. As the figure shows that all adults emerged on the same day in all treatments, but the females survived longer than the males (Figure 1).…”

“…The life-table studies under different environmental conditions and on different host plants have been proposed to be a relatively time-consuming process; thus the use of life tables in pest management programs seems not to be appropriate. However, the life table studies provide us with some basic knowledge about the biological properties of studied pests, without them development of an appropriate control strategy is impractical [38].…”