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Comparison of Different Baits to Attract Rats to Traps in Rice Fields at the Reproductive Phase.

Md. Mofazzel Hossain
Scientific Officer
Entomology Division, BRRI, Gazipur-1701

Dr. N. Q. Kamal
CSO and Head
Entomology Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

The response of rats to different baits (Paddy grain, coconut meat, dry fish and snail (flesh) were tested in the T. Aman 2002 and Boro 2003 seasons at BRRI farm, Gazipur to know the response of rats on different baits . Tests were conducted at the reproductive phase of rice crops using the single capture live-traps. Trapping was done on 50 consecutive nights in T. Aman 2002 and 36 nights in Boro 2003. Each type of bait was used in three traps. All the baits were wrapped by a piece of white nylon net and placed at random near active barrows in paddy fields. Traps were set in the field in the evening and checked the next morning. The animal trapped at each trap was examined and identified. Bandicota bengalensis was the dominant rat species at BRRI rice field. Rat bait with paddy grain, trapped maximum number of rats than the other bait trap. During the T. Aman season, 34 animals were trapped in different bait trap of which 29 were rats, four were shrews and one was grey mongoose. Of the rats, 22 were Bandicota bengalensis and seven were Rattus rattus. In the Boro season, 24 animals were trapped of which 23 were rats and one grey mongoose.

Keywords: Rat, Bait trap, Reproductive phase

Location: BRRI, Gazipur

Start Date: 01-07-2002

End Date: 30-06-2003

Program Area: Pest Management

Commodity: Insecticide

Objectives:

To know the response of rats on different baits

Methodology:

The response of rats to different baits (Paddy grain, coconut meat, dry fish and snail (flesh) were tested in the T. Aman 2002 and Boro 2003 seasons at BRRI farm, Gazipur. Tests were conducted at the reproductive phase of rice crops using the single capture live-traps. Trapping was done on 50 consecutive nights in T. Aman 2002 and 36 nights in Boro 2003. Each type of bait was used in three traps. All the baits were wrapped by a piece of white nylon net and placed at random near active barrows in paddy fields. Traps were set in the field in the evening and checked the next morning. The animal trapped at each trap was examined and identified.

Source of Information: Proceedings of BRRI Annual Internal Review for 2002-2003

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

During the T. Aman season, a total of 34 animals were trapped in different bait trap. Among them 29 were rats, four were shrews and one was grey mongoose. Of the rats, 22 were Bandicota bengalensis and seven were Rattus rattus. In the Boro season, 24 animals were trapped of which 23 were rats and one grey mongoose. Like T. Aman season B. bengalensis was the dominant rat species (20 out of 23 rats) and R. rattus was present in low population densities. In the both seasons, about 42 trapped rats were B. bengalensis and only 10 were R. rattus. Predator like grey mongoose was active in the non-flooded rice ecosystem. Rat activity in the T. Aman was higher than the Boro seasons, resulting higher rat damage to the T. Aman crop than the Boro crop. In the Aman season, the total number of animals caught with paddy grain, coconut meat, dry fish and snail flesh were 12, 10, 6 and 6, respectively but in Boro season, it was 15, 4, 1 and 4 for the aforesaid baits. In both the seasons, number of rat caught per trap per day was not significantly different among the treatments. However, paddy grains attracted maximum number of rats than the other baits in both the season. So, it can be used as bait in live trap for trapping B. bengalensis and R. rattus at the reproductive phase of rice in field.

Knowledge Management: Report/Proceedings