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Comparative Efficiency of Some Indigenous Traps to Capture Rats in the Wheat Field of Bangladesh

A. T. M. HASANUZZAMAN
Vertebrate Pest Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

M. S. ALAM
Vertebrate Pest Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

M. M. BAZZAZ
Wheat Research Sub-station, BARI, Rajbari, Dinajpur, Bangladesh

Abstract/ Executive Summary:

Comparative efficiency of some indigenous traps for capturing rodents was evaluated in the wheat fields of Dinajpur district of Bangladesh during August 2007 to May 2008. Five different types of traps such as, cage type live trap, box type live trap, wooden live trap, tin made snap trap and wooden snap trap were evaluated and five types of bait (bread, potato, coconut meat, dry fish and paddy grain) were used for trapping rodents. At grain filling and ripening stages of wheat, the cage type live trap was found most effective (44.11% success) followed by tin made snap trap (30.73% success), wooden snap trap (14.62% success), box type live trap (10.41% success) and wooden live trap (9.85% success) using bread, dry fish, paddy grain, coconut and potato as bait. About 99 per cent of the trapped rats were identified as Badicota bengalensis and only 1 per cent was Mus terricolor. The descending order of preference of bait by B. bengalensis was: paddy grain> bread> dry fish> coconut> potato. A considerable number of shrew, Suncus murinus (12.72% of total animal) was also captured all over the season.

Keywords: Traps, Rats, Wheat field.

Location: Rajbari, Dinajpur

Start Date: 00-08-2007

End Date: 00-05-2008

Program Area: Pest Management

Commodity: Rats

Objectives:

To evaluate the efficiency of different indigenous traps
To find out the best trap, which might be useful to the wheat farmers of Bangladesh.

Methodology:

The experiment was conducted in the farmers’ wheat field and wheat field of wheat research sub-station, Rajbari, Dinajpur during August 2007 to May 2008. Five different types of traps were used for capturing rats such as cage type live trap , box type live trap wooden live trap, tin made snap trap and wooden snap trap. The experiment was laid out in Randomized Complete Block Design (RCBD) with 3 replications. Five bait materials were used for trapping rats and these were bread, potato, coconut, dry fish and paddy grain (un-husked). Each type of bait was used for all kinds of traps set at a time. The experiment was conducted for 1800 trap nights throughout the wheat season i.e., 990 trap nights at grain filling stage and 810 trap nights at ripening stage. When 1 trap was set for 1 night, it was considered as a 1 trap night. Equal numbers of trap nights were used for each type of trap. Only active burrows were used for setting the traps. The burrows with fresh soil at the opening including some symptoms of new activities were identified and marked as the “active burrows” having rats inside. One trap was set near the active burrow openings of one burrow system. So number of trap setting per night was depended upon the availability of active burrow system. The presence of rat inside the burrow was ensured by using tracking tiles. Capture of rat species was the measure of trap success. All the traps were set in the evening and the data were recorded in the following morning. Each trapped animal was examined and identified up to species level. Per cent trap success for each kind of trap and for each type of bait material was calculated. Data were analyzed by using MSTAT software for analysis of variance. Percentage data were arcsine transformed prior to analysis. Least Significance Difference (LSD) test was used to compare mean values. χ²-test was used to evaluate the different kinds of bait.

Source of Information: J Agric Rural Dev 7(1&2), 121-125, June 2009 ISSN 1810-1860

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Bandicota bengalensis was the most common species in study area. This species had a descending order of preference of bait as: paddy grain, bread and dry fish in the wheat field. Trapping is environment friendly and ecologically sound method for controlling rodent. Considering the trap success, availability in the local market and cost of the traps it can be concluded that farmer can use cage type live trap and tin made snap trap for controlling rodents in the wheat fields with paddy grain and bread as bait.

Knowledge Management: Journal