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R. Muniappan IPM CRSP. First Successful Biological Control of a Weed - 1795. Control of Opuntia monacantha by Dactylopius ceylonicus in India (1796-1809) Subsequently released in Sri Lanka, Australia and South Africa.
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R. Muniappan IPM CRSP
First Successful Biological Control of a Weed -1795 Control of Opuntia monacantha by Dactylopius ceylonicus in India (1796-1809) Subsequently released in Sri Lanka, Australia and South Africa
Opuntia stricta damaged by Dactylopius opuntiae photos by H. Zimmermann
Chromolaena odorata(Eupatorium odoratum)Asteraceae (Compositae) In a coconut plantation Flowers in Dec. – Jan. in N. Hemisphere and June – July in S. Hemisphere
Yellowing of Chromoalena due to Insect Induced Defense Marutnai and Muniappan (1991) Ann. Appl. Biol.119: 227-237
Electron microscopy of leaf tissue Green leaf Yellow leaf
Eriophyid mite, Acalitus adoratus Infested leaf Distribution
Gall fly, Cecidochares connexa(Dip.: Tephretidae) Gall fly ovipositing in the terminal shoot Photo by Desmier de Chinon Distribution of gall fly
Cecidochares connexa Gall Maggots in side the gall
Chromolaena workshop conducted Seven Proceedings and 17 Newsletters published • 1988 – Bangkok, Thailand • 1991 – Bogor, Indonesia • 1993 – Abidjan, Ivory Coast • 1966 – Bangalore, India • 2000 – Durban, South Africa • 2003 – Cairns, Australia • 2006 – Pingtung, Taiwan
Acythopeuscocciniae(Curculionidae) Adult weevils Larval mining
Acythopeusburkhartorum(Curculionidae) Adult Gall in the tendril Pupal chamber
Melittia oedipus (Sesiidae) Adult Larva in the stem
Coccinia grandis biocontrol in Hawaii (Waimanalo, Hilo)Pictures: courtesy of Hawaii Department of Agriculture Before release of biocontrol agents Six years after release of biocontrol agents
Uroplatis girardi, a leaf mining chrysomelid beetle Adult Leaf damaged by grubs
Tingid bug, Teleonomiascrupulosa Adult Flower damaged by Lantanophagapusilidactyla(Pterophoridae)
Partheniumhysterophorus(Asteraceae) A field covered by Parthenium in India
Parthenium defoliated by Zygogramma histrophorus (Chrysomelidae)Photos: K. Dhileepan
Giant sensitive plant, Mimosa diplotricha (Mimosaceae) Pictures: L. Kuniata • M. diplotrichainfested area in Papua New Guinea • Heteropsyllaspinosa– Effect of nirogen application
Salviniamolestacontol by Cyrtobagous salviniae Photos : P. Room and M. Julien
Waterhyacinth, Eichhorniacrassipes Waterhyacinth flower A pond in India infested by waterhyacinth
Waterhyacinth in a lake before and after release of Neochetina eichornieiae and N. bruchi Photos: J.A. Coetzee et al.
Benefit cost analysis for the biological control of invasive weeds in the tropics
Benefit cost analysis for the biological control of invasive weeds in the tropics (Contd.)