Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Relative Preference of Different Host Plants to Teak Defoliator, Hyblaea Puera Cram. (hyblaeidae: Lepidoptera) in Bangladesh

M. W. Bakaha
Forest Protection Division,Bangladesh Forest Research Institute,Chittagong.

M. J. Crawley
Forest Protection Division,Bangladesh Forest Research Institute,Chittagong.

Abstract/ Executive Summary:

Seven plant species have been recorded as hosts of teak defoliator, Hyblaea puera Cram. (Hyblaeidae: Lepidoptera) in Bangladesh. Of them Avicennia officinalis Linn., a mangrove species, is a new host record of H. puera. The food preference of the pest larvae was evaluated for all the host plant species. Tectona grandis Linn. was found to be the most preferred food followed by Avicennia officinalis Linn., Callicarpa arborea Roxb., Vitex peduncularis Wall., V. pubescens Vahl., V. negundo Linn. and Oroxylurn indicum Vent.

Keywords: Bangladesh, Food preference, Host plants, Hyblaea puera, Teak defoliator.

Location: Chittagong, Cox's Bazar and Chittagong Hill Tracts (South) Forest Divisions.

Start Date: 01-06-1990

End Date: 30-07-1991

Program Area: Knowledge Management

Commodity: Teak

Objectives:

To determine their relative preference as food for its larvae.

Methodology:

The study was started in June, 1990 when an epidemic attack of H. puera was observed in teak growing areas of Chittagong, Cox's Bazar and Chittagong Hill Tracts (South) Forest Divisions. Surveys were made in these forests to explore the alternative food plants of H. puera during the epidemic infestation periods and during the time when teak remained leafless due to its deciduous nature. Defoliated plant samples and the larvae of the pest were collected and brought to the laboratory for identification and rearing up to the adults. To assess the relative preference of various host plants of H. puera larvae, laboratory experiment were set up in June, 1990 in the Bangladesh Forest Research Institute, Chittagong with detached leaves of approximately 3-years old saplings of each host plant. In a multiple choice test, detached leaves of approximately same age (2nd terminal pair) from each host plant were offered to a batch (30 larvae of 3rd instar larvae arising from the same stock culture. The larvae were placed in the Centre of circle drawn on a sheet of art paper. The leaves each species were placed equidistantly from centre of the circle and from each other. After 24 hours the number of larva aggregated on leaves of each host plant was counted. The experiment was replicated four times.

Source of Information: Bangladesh Journal of Forest Science, Vol. 24(1): 21-25, 1995, BARC.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The food preference of the pest larvae was evaluated for all the host plant species. Tectona grandis Linn. was found to be the most preferred food followed by Avicennia officinalis Linn., Callicarpa arborea Roxb., Vitex peduncularis Wall., V. pubescens Vahl., V. negundo Linn. and Oroxylurn indicum Vent.

Knowledge Management: Journal