Journal of Biological Control

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Age-Specific Fecundity and Intrinsic Rate of Natural Increase in the Mexican Beetle Zygogramma bicolorata at Bangalore, India


Affiliations
1 Division of Entomology and Nematology, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 089, India
2 Department of Zoology, Bangalore University, Bangalore - 560 056, India
 

Parthenium hysterophorns L. (Asteraceae) is a serious weed of agroecosystems, pastures and waste lands. in India. The Mexican beetle Zygogramma bicorata Pallister (Coleoptera : Chrysomelidae) was released in Bangalore in 1984 for biological control trials against this weed. The insect started building up to damaging population levels from 1988 (Jayanth and Bali, 1990). The present studies were conducted under laboratory conditions to make a critical assessment of the biological control potential of this insect.

Keywords

Zygogramma bicolorata, Parthenium hysterophorus, Biological Control, Intrinsic Rate of Increase.
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  • Age-Specific Fecundity and Intrinsic Rate of Natural Increase in the Mexican Beetle Zygogramma bicolorata at Bangalore, India

Abstract Views: 242  |  PDF Views: 125

Authors

K. P. Jayanth
Division of Entomology and Nematology, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 089, India
Geetha Bali
Department of Zoology, Bangalore University, Bangalore - 560 056, India

Abstract


Parthenium hysterophorns L. (Asteraceae) is a serious weed of agroecosystems, pastures and waste lands. in India. The Mexican beetle Zygogramma bicorata Pallister (Coleoptera : Chrysomelidae) was released in Bangalore in 1984 for biological control trials against this weed. The insect started building up to damaging population levels from 1988 (Jayanth and Bali, 1990). The present studies were conducted under laboratory conditions to make a critical assessment of the biological control potential of this insect.

Keywords


Zygogramma bicolorata, Parthenium hysterophorus, Biological Control, Intrinsic Rate of Increase.