A comparative study of the population biology of trichlorfon-resistant strains of the oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritdae)

This study aims to clarify the difference in basic biological characteristics and population parameters like relative fitness and intrinsic rate of increase, between different trichlorfon-resistant strains and susceptible strain of the oriental fruit fly, Bactrocera dorsalis (Hendel). The high- and...

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Published inK'un ch'ung hsueh pao Vol. 58; no. 8; pp. 864 - 871
Main Authors Chen, Lang-Jie, Liu, Xin, Wu, Shan-Jun, Zhu, Yi-Fan, Zeng, Ling, Lu, Yong-Yue
Format Journal Article
LanguageChinese
Published 01.01.2015
Subjects
Bactrocera dorsalis
Diptera
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Summary:This study aims to clarify the difference in basic biological characteristics and population parameters like relative fitness and intrinsic rate of increase, between different trichlorfon-resistant strains and susceptible strain of the oriental fruit fly, Bactrocera dorsalis (Hendel). The high- and medium-level trichlorfon-resistant strains of B. dorsalis were selected in the laboratory. Biological characteristics and parameters were investigated and analyzed between the resistant strains and the susceptible strain. Under selection pressure of trichlorfon, there is significant decrease in the average generation period, egg hatching rate and pupation rate of Tri-M, while most of biological characteristics of the resistant strains of B. dorsalis have no significant change. Reproduction and development of populations of the trichlorfon-resistant strains are disadvantaged, while Tri-M is much more disadvantaged. Nevertheless, the resistant strains show better population growth potentials.
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ISSN:0454-6296