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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 27, No. 3, 2006, pp. 275-280
Bioline Code: zr06039
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 27, No. 3, 2006, pp. 275-280

 en Effects of Interspecific Competition on the Population Dynamics of Four Stored Grain Insect Pests
CUI Jin-bo, DENG Yong-xue, WANG Jin-jun, YANG Long-de, YANG Zi-li, JIANG Tian-ke

Abstract

The effects of interspecific competition on the population dynamics of four insect grain Insecp pests ( Sitophilus zeamais check for this species in other resources , Rhizopertha dominica check for this species in other resources , Tribolium castaneum check for this species in other resources and Cryptolestes ferrugineus check for this species in other resources ) was studied at 30°C, 75% relative humidity. A regression analysis of the population dynamics was conducted. The results showed that population growth of S. zeamais,R. dominica, T. castaneum and C. ferrugineus was restrained under mixed rearing. Population growth of T. castaneum and C. ferrugineus was remarkably accelerated when they coexisted with S. zeamais or R. dominica, while that of S. zeamais and R. dominica was restrained to some extent. Regression analysis results showed that the population growth potential of S. zeamais was the largest and that of C. ferrugineus was the smallest, and the changing trends of population growth rates were not distinct.

Keywords
Interspecific competition; Population dynamics; Sitophilus zeamais; Rhizopertha dominica; Tribolium castaneum; Cryptolestes ferrugineus

 
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