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Data for non-target interactions and humaneness evaluation on a captive-bolt trap for commensal rodents Ryan, Erin
Description
The Goodnature® A24 automatic rat trap is a self-resetting captive-bolt trap powered by pressurized CO2. Little research has examined the humaneness of the trap or its potential to harm non-target mammals and birds. This study aimed to identify potential risks to non-target animals. 17 traps, each paired with a motion-activated video camera, were deployed at two sites where rodents were present. In a nine-week study, traps were baited but not activated, and a blocking device (“blocker”) was used in a cross-over design to evaluate its potential at reducing non-target strikes. Once the researchers were confident in avoiding non-target strikes, the traps were activated and recorded for 19 weeks across two different locations to evaluate humaneness. Surprisingly, only 11 trap triggers and eight kills were observed across the two locations. The eight observed kills included 3 house mice, 4 deer mice, and 1 grey squirrel. The Goodnature® A24 traps presented low risks to non-target animals, and the use of blockers effectively removed the risks to the common non-target species with the exception of one shrew in Study 1 and one squirrel in Study 2.
Item Metadata
| Title |
Data for non-target interactions and humaneness evaluation on a captive-bolt trap for commensal rodents
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| Creator | |
| Contributor | |
| Date Issued |
2021-09-21
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| Description |
The Goodnature® A24 automatic rat trap is a self-resetting captive-bolt trap powered by pressurized CO2. Little research has examined the humaneness of the trap or its potential to harm non-target mammals and birds. This study aimed to identify potential risks to non-target animals. 17 traps, each paired with a motion-activated video camera, were deployed at two sites where rodents were present. In a nine-week study, traps were baited but not activated, and a blocking device (“blocker”) was used in a cross-over design to evaluate its potential at reducing non-target strikes. Once the researchers were confident in avoiding non-target strikes, the traps were activated and recorded for 19 weeks across two different locations to evaluate humaneness. Surprisingly, only 11 trap triggers and eight kills were observed across the two locations. The eight observed kills included 3 house mice, 4 deer mice, and 1 grey squirrel. The Goodnature® A24 traps presented low risks to non-target animals, and the use of blockers effectively removed the risks to the common non-target species with the exception of one shrew in Study 1 and one squirrel in Study 2.
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| Subject | |
| Geographic Location | |
| Type | |
| Language |
English
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| Notes |
Study 1 - Non-target interactions
Study 2 - Humaneness evaluation
Data were collected by reviewing video retrieved from cameras twice weekly. For each 30-sec segment of video, a record was made of the date and time, the trap site number, whether or not it included a blocker, the type of bait (Study 2), the species of animal, and the animal’s behaviour coded according to the following definitions:
- No interaction (NI): An animal passes in and out of the video frame without appearing to sniff, handle or direct attention to the trap.
- Investigates trap (IT): An animal approaches the trap and appears to smell or visually inspect the trap.
- Touches trap (TT): An animal physically touches the external surfaces of the trap with paws, limbs, or other body parts. This includes apparent direct manipulation or apparently inadvertent touching.
- Limb in trap (LT): An animal’s limb (other than head, nose) enters the trap body.
- Enters trap (ET): An animal inserts the nose, head, or whole body (small animals) inside the body of the trap.
Animals were given a unique identifier for each 30-sec segment of video, to distinguish where they performed more than one behaviour in each 30-sec segment.
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| Date Available |
2021-09-06
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| Provider |
University of British Columbia Library
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| License |
CC0 1.0
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| DOI |
10.14288/1.0402330
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| URI | |
| Publisher DOI | |
| Rights URI | |
| Country |
Canada; Canada
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| Aggregated Source Repository |
Dataverse
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Licence
CC0 1.0