Biology And Population Dynamics Of Mango Flower Thrips (Thysanoptera) And Effectiveness Of Neem (Azadirachta Indica) Oil For Their Control

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dc.contributor.authorAliakbarpour, Hamaseh
dc.date.accessioned2018-12-13T06:56:15Z
dc.date.available2018-12-13T06:56:15Z
dc.date.issued2011-10
dc.description.abstractPopulation dynamics of thrips was investigated in treated and untreated mango orchards, located at Balik Pulau, Penang between 2008 and 2010. Thrips abundance was estimated by collecting them from mango panicles and various weed species growing in the orchard. Four thrips species from the family Thripidae; Thrips hawaiiensis, Scirtothrips dorsalis, Frankliniella schultzei and Megalurothrips usitatus were recorded from the treated orchard. Other than these species, Thrips palmi (Thripidae) and Haplothrips sp. (Phlaeothripidae) were encountered in the untreated orchard. Comparing several thrips collection techniques with the absolute population count, CO2 collection method was the most efficient procedure, extracting 80.7% adults, followed by the washing procedure (62.3%) and the shaking method (36.4%). All collection techniques showed that the numbers of all thrips species in mango panicles reached a daily peak between 1200 and 1400 hrs. Assessment of diurnal flight activity, which is useful for effective timing of sampling and controlling of this pest, had shown that adult thrips captured on the yellow sticky traps were the most abundant between 0800-1000 and 1600-1800 hrs. Sticky trap was also found to be satisfactorily reliable to monitor thrips populations in mango orchard. The level of aggregation of thrips adults on mango panicles was significantly higher in the treated orchard than in the untreated orchard, but the larval distribution was found to be normal in both orchards. Densities of larval thrips falling into the soil to pupate were determined using a drop trap. Emerging thrips adults captured in an emergence trap provided information on generation patterns of various thrips species in the mango orchards.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/7294
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPopulation dynamics of mango flower thripsen_US
dc.subjecteffectiveness of neem oil for their controlen_US
dc.titleBiology And Population Dynamics Of Mango Flower Thrips (Thysanoptera) And Effectiveness Of Neem (Azadirachta Indica) Oil For Their Controlen_US
dc.typeThesisen_US
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