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dc.contributor.authorSimeonidis Andrewen
dc.date.accessioned2009-11-26T03:54:27Z
dc.date.issued1995en
dc.identifier.urihttps://hdl.handle.net/10182/1302
dc.description.abstractAphids are one of the most important insect pests of greenhouse crops yet to be controlled by biological means. Broad spectrum chemical control is becoming increasingly difficult to use in integrated pest management programmes, therefore, there is a need for a suitable biocontrol agent to be mass reared and released. The Tasmanian brown lacewing, Micromus tasmaniae Walker is an aphid predator that is found commonly throughout Australasia and has suitable characteristics that make it a candidate for mass rearing. A technique for rearing M. tasmaniae was developed. Eggs of M. tasmaniae were reared in batches of 50, 100 and 200 in 20 litre clear plastic containers. The oat aphid, Rhopalosiphum padi L. was fed to the larvae. The results revealed that the highest initial egg density (200 eggs per container) produced the cheapest adults at 22 cents per adult. However, mass rearing adults was considered not practical because of the high production cost, although, mass production of eggs is considered to be economically viable. The cost of producing one egg was 0.015 cents. M tasmaniae was maintained in mass culture for six generations. Simple experiments were carried out to monitor the quality of laboratory-reared insects. The 'wild' insect was used as a quality standard and comparisons with laboratory-reared insect populations were made. The fecundity, development rates and tolerance to pirimicarb, a carbamate insecticide, were determined. Fecundity was found to decline with successive generations in mass culture. The lacewing development experiment indicated that larval stages of each generation suffered the highest mortality rate and that between 35-45% of individuals emerged as adults. The tolerance of adults to pirimicarb did not alter over five generations. Recommendations for improving the mass rearing of M. tasmaniae are discussed.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.subjectTasmanian brown lacewingen
dc.subjectMicromus tasmaniae Walkeren
dc.subjectaphidsen
dc.subjectRhopalosiphum padi L.en
dc.subjectmass rearingen
dc.subjectquality controlen
dc.subjectbiological controlen
dc.subjectinundative releaseen
dc.subjectgreenhousesen
dc.titleDevelopment of a mass rearing technique for the Tasmanian brown lacewing, Micromus tasmaniae Walkeren
dc.typeThesis
thesis.degree.grantorLincoln Universityen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Applied Scienceen
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300300 Horticulture::300303 Plant protection (pests, diseases and weeds)en
dc.subject.marsdenFields of Research::270000 Biological Sciences::270500 Zoology::270505 Entomologyen
lu.contributor.unitLincoln Universityen
pubs.organisational-group/LU
pubs.publication-statusPublisheden


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