期刊
PEST MANAGEMENT SCIENCE
卷 73, 期 5, 页码 830-837出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/ps.4494
关键词
Liriomyza trifolii; sterile insect technique; greenhouse pest control; pupal sexual dimorphism
资金
- CanadianAgriculturalAdaptation Programme (CAAP)
- National Science and Engineering Research Council through a NSERC Industrial Postgraduate Scholarship I - Canada Growers Inc
BACKGROUND: American serpentine leafminer (ASL), Liriomyza trifolii (Burgess), is a significant pest of greenhouse ornamental crops, and females damage leaf tissue with their ovipositor during feeding and oviposition. The sterile insect technique has been advocated as a non-chemical alternative to currently available control methods. In area-wide sterile insect release programmes, males act as true vectors of sterility. Females should be eliminated from a cohort of pupae prior to irradiation to maximise production economics and sterility spread. The aim of this research was to develop a mechanical sexing system based on pupal size to reduce the proportion of ASL females. RESULTS: Cumulative frequency distributions were used to examine significant differences in male and female pupal length and dorsal and lateral width distributions. Optimum size cut-off points based on the largest differences in distribution curves were used to determine the dimensions of three different sieve designs. Sieve pores measuring 1.543mm by 0.765mm excluded 76% of female pupae and doubled the proportion of males in the throughput sample. CONCLUSION: Pupal sexual dimorphisms identified in this research can be used to design a sieve to aid in reducing the proportion of females prior to irradiation, thus improving the efficacy of an area-wide sterile insect release programme. (C) 2016 Society of Chemical Industry
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