Do temperature, relative humidity and interspecific competition alter the population size and the damage potential of stored-product insect pests? A hierarchical multilevel modeling approach


The premises of stored agricultural products and food consists of a complex ecosystem in which several pests can seriously affect the quality and quantity of the products. In this study we utilize a 4-level hierarchical linear multilevel model in order to assess the effect of temperature, relative humidity (RH) and interspecific competition on the population size and damage potential of the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera: Bostrychidae) and the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae). As RH was increased, we observed higher percentage of live insects, while increased levels of temperature significantly decreased the percentage of live insects. The combination of R. dominica and P. truncatus lead to reduction of the percentages of live insects in comparison to single species treatments. However, P. truncatus is more damaging than R. dominica in maize, based on the proportion of damaged kernels which were infested by each insect species. We expect our results to have bearing in the management of these species.

Publication DOI:
Divisions: College of Business and Social Sciences > Aston Business School > Operations & Information Management
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Publication ISSN: 0306-4565
Last Modified: 18 Mar 2024 08:26
Date Deposited: 05 Nov 2018 11:06
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Related URLs: https://linking ... 306456518303784 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-12-01
Published Online Date: 2018-11-02
Accepted Date: 2018-10-31
Authors: Papanikolaou, Nikos E.
Kavallieratos, Nickolas G.
Boukouvala, Maria C.
Malesios, Chrisovalantis (ORCID Profile 0000-0003-0378-3939)



Version: Accepted Version

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