Seasonal Occurrence of the Durian Fruit Borer, Mudaria Magniplaga Walker (Lepidoptera: Noctuidae)

Lee, Boon Kok (1996) Seasonal Occurrence of the Durian Fruit Borer, Mudaria Magniplaga Walker (Lepidoptera: Noctuidae). Masters thesis, Universiti Pertanian Malaysia.

[img] PDF
1320Kb

Abstract

The durian fruit borer, Mudaria magniplaga Walker, is the most important insect pest of durian (Durio zibethinus Murray) in Malaysia. Since the larva of M. magniplaga is known to feed only on durian fruit which are in season once or twice a year, it is necessary to understand how the phenology of the pest is related to that of the host's. Studies were carried out to: (l) determine the species of Mudaria infesting durian, (2) examine the phenological relationship between M magniplaga and durian, (3) investigate diapause in M magniplaga. For the taxonomic study, moths were obtained from light traps and by rearing from infested durian fruit and flower buds. Based on the forewing size and pattern, and dissection of the male genitalia two species of Mudaria were identified of which one was M. magniplaga and the other an unknown (probably new) species of Mudaria. Of the specimens from the light traps, 230 were M magniplaga and 5 were Mudaria sp.; all 823 specimens from fruit were M magniplaga; and from the flower buds 5 were M magniplaga and 91 were Mudaria sp. From the results it was concluded that: (1) besides fruit M magniplaga also infests the flower bud of durian, (2) the Mudaria sp. found infesting flower buds does not infest durian fruit, (3) the high proportion of Mudaria sp. may indicate either an adaptation by this species to durian flower buds or that the phenology of M magniplaga was not in synchrony with that of the buds during the study period.

Item Type:Thesis (Masters)
Subject:Durians
Subject:Lepidoptera
Chairman Supervisor:Associate Professor Dr. Khoo Khay Chong
Call Number:FP 1996 18
Faculty or Institute:Faculty of Agriculture
ID Code:10388
Deposited By: Mohd Nezeri Mohamad
Deposited On:31 Mar 2011 07:00
Last Modified:31 Mar 2011 07:04

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 31 Mar 2011 07:00.

View statistics for "Seasonal Occurrence of the Durian Fruit Borer, Mudaria Magniplaga Walker (Lepidoptera: Noctuidae)"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.