The Bionomics of Diopsis (Dipteral Digpsidae) and of Epiiachna Similis (Coleopteba, Coccinellidae) on Oryza Sativa L. in the Accra Plains

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dc.contributor.advisor Morgan, H.G.
dc.contributor.author Abu, J.F.
dc.contributor.other University of Ghana, College of Basic and Applied Sciences, School of Agriculture, Department of Crop Science
dc.date.accessioned 2016-03-15T09:22:37Z
dc.date.accessioned 2017-10-13T16:24:49Z
dc.date.available 2016-03-15T09:22:37Z
dc.date.available 2017-10-13T16:24:49Z
dc.date.issued 1972-06
dc.identifier.uri http://197.255.68.203/handle/123456789/7850
dc.description Thesis (MSc) - University of Ghana, 1972
dc.description.abstract The biology of Siopsis species (Diptera; Diopsidae) and Epilachna s im i l is (Coleoptera; Coccinellidae) was studied on the Acora P lain s . of the three species of Diopais found, D. thoracica caused the most severe damage to r i c e . AH the developmental stages of these insects are described and keys are provided for identify in g a ll the various stages of the Diopsis species. D. thoracica exhibits sexual dimorphism with regard to the interorbita l distance. A high stalk infestation o f forty -eight per cent was recorded in the major rainy season. The parasite and alternate host of these insects species are discussed. Artificial infestation of rice stalks with the larvae o f D. thoracica demonstrated that a single larva, could destroy 3 - 6 stalks during its life time leading to a loss of about nine percent in yield . All the developmental stages o f B. similis are described and a key provided for identify in g the four larval in s tars . Possible control measures against the Diopsis species and Epilachna similis are discussed. en_US
dc.format.extent xi, 105p. :ill.
dc.language.iso en en_US
dc.publisher University of Ghana en_US
dc.title The Bionomics of Diopsis (Dipteral Digpsidae) and of Epiiachna Similis (Coleopteba, Coccinellidae) on Oryza Sativa L. in the Accra Plains en_US
dc.type Thesis en_US
dc.rights.holder University of Ghana


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