Using a population growth model to simulate response of Plodia interpunctella Hübner to temperature and diet

Abstract

Response to temperature and diet are major factors in the potential population growth of Plodia interpunctella Hübner, a damaging pest of many stored products. A population growth model was used to simulate population development on an optimal wheat-based diet and a sub-optimal diet of raisins at 20-35°C, using different starting values for initial density and life stage. Predicted population development on the two diets increased with temperature and growth patterns were similar regardless of starting population levels at temperatures over 20°C. The predicted population levels on raisins were much less than those predicted for wheat diet, with the same general patterns of increasing populations with temperature at each starting density level or life stage. Results show that the intrinsic population dynamics for P. interpunctella even on a sub-optimal diet and at suboptimal temperatures are such that density can increase rapidly to levels that would cause extensive economic damage. The ability to predict population growth is a valuable tool to aid pest managers in decision making.

Economic Feasibility of Methoprene Applied as a Surface Treatment and as an Aerosol Alone and in Combination With Two Other Insecticides

“…Optimization of the economic model shows that there is a 99% or more reduction in some of the treatment scenarios. However, because of unequal survivorship on wheat diet and raisins (88 and 11% from Fontenot et al 2012a) respectively, there are often considerably more surviving individuals on wheat diet, though insecticide treatments reduce survival proportionally for both diets.…”

“…Simulations of the effect of timing and frequency of insecticide treatments were conducted using a population growth model modiÞed for wheat diet and a model modiÞed for raisins (Fontenot 2012a). These models were based on four main components; time required for the complete life cycle, male longevity, female longevity, and fecundity.…”

“…In this study, partial budget analysis is used to compute the cost of each management treatment or option (Boehlje and Eidman 1984). Model inputs include cost information from our partial budget analysis along with data from a population growth model simulating development in response to multiple diet types (Fontenot et al 2012a). Using this type of modiÞed economic analysis could allow food production plant managers and warehouse managers to make decisions regarding control of a single pest species by comparing costs, efÞcacy of different treatments, and necessary frequency of application of those treatments.…”

Plodia interpunctella (Hübner, 1813) and Nemapogon granellus (Linnaeus, 1758) - Uncommon Pests on Stored Garlic (Allium sativum L.) in the Czech Republic

“…As Mohandass et al (2007) show, the development time of Indian meal moth depends on the conditions (temperature, humidity, diet) and geographic differences among populations. Fontenot et al (2012) state the grain as optimal diet for this pest. Arbogast (2007) shows the complete life cycle at 30 °C and 60 % r.h. on maize grain lasts 20 days.…”

Effect of four different nutrition regimes on the alpha-amylase gene expression in the Indian moth,Plodia interpunctella

“…The larvae of P. interpunctella feed on almost any type of stored products including grains, dried fruits, nuts, chocolate, legumes and plants seeds (Fontenot et al 2012), causing extensive damage by reducing dry weight, germination, nutritional value and quality grade of harvested products. Insect development is influenced by different biotic and abiotic factors such as temperature, humidity, photoperiod and the quantity of food (Johnson et al 1992).…”