Population-level analysis on reduction in equilibrium population size of the azuki bean beetle

Midori Tuda, Masakazu Shimada

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Responses of laboratory population of the azuki bean beetle Callosobruchus chinensis to temperature conditions of 30°C and 32°C are compared. Equilibrium population size was found to be lower at 32°C. A one-generation process examined by reproduction-curve experiments is divided into two consecutive life stages specified by different habitats, i.e., outside and inside beans. Modified logistic difference equations are used to describe these population-level responses at each life stages. Sensitivity analysis is used to determine parameters of importance, thus determining the main cause of the reduced equilibrium population size at 32°C. The reduction resulted from the decrease in maximum population size of emerged adults which have experienced inside-bean process. The application and limitation of this population-level analysis to different levels are discussed.

Original languageEnglish
Pages (from-to)231-239
Number of pages9
JournalResearches on Population Ecology
Volume35
Issue number2
DOIs
Publication statusPublished - Dec 1 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)

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