If there was a product on the market that was capable of trapping, ‘tagging,’ and releasing an individual without human intervention, would you or your peers invest? Live mammal traps require lots of human labor. Thus, I have been developing a hypothesis to autonomous this.
Basic overview:
This battery-powered device can recognize when a subject has entered and will secure them inside for a set period of time, recording weight, imagery, and a noninvasive permanent identifiable mark before releasing the subject.
Cons:
- Battery operated
- Potential marking failure
- Potential trap avoidance/ recapture
- More expensive
- Heavier
Pros:
- Less labor cost
- Ideal for remote locations
- Increased number of trap nights
- No tagging-related change in fitness
- Live updates/ notifications
- Wireless transmitted data
Are the current methods sufficient, or would the community benefit from this product? What are your concerns, and can they be addressed?
29 November 2023 10:34pm
Hi Parker!
Interesting thought! You may want to check out this somewhat related discussion (perhaps for somewhat larger animals) :
non-invasive technique to apply GPS collars without catching? | WILDLABS
Dear all, I was wondering if they were "passive" techniques to "install" GPS collar or other GPS devices on a terrestrial animal ? Just a discussion regarding your experiences and feedbacks from test or knowledge regarding such techniques. The main issue is to make sure that it won't injure the animal. These GPS devices could be design to take data during a limited period of time and be released, for example could be glued or stitched into the fur and then detached later. For example, it could be implemented to monitoring elusive invasive mammal species in order to know their distribution area and adapt regulation methods. In addition, do you know any user-friendly cheap GPS device that could be used on a goat size animal ? Thank you.
wildlabsnetCheers,
Lars
Rob Appleby
Wild Spy
1 December 2023 1:50pm
Hi @Pldepond I think this would be an amazing tool! We had something similar in mind with an RFID camera tunnel we built years ago (made another comment about it in this thread:
Trail cam recommendations for capturing small, quick mammals at night? | WILDLABS
Kia ora,can anyone recommend a trail camera model that is consistently triggered by quick, small mammals e.g. rats/mice/stoats at night? Or for a trail cam that captures sharp night video footage (whilst remaining undetectable - no-glow)? We have been using Browning Dark Ops Pro trail cameras to investigate small/medium mammal and bird behaviour around a novel potential food item. Unfortunately, item removal is sometimes missed by these cameras, particularly at night - they are after all designed with larger game animals in mind, not stoats, cats and rodents! Also - has anyone come across a reliable trail cam that you can program to only use the PIR function at night and rely solely on movement sensors during the day? We have had a lot of issues with 'false' triggers in open habitats that I believe may be caused by heat differentials during the daytime. Many thanks for your time.
wildlabsnetbut never managed to get a good way to safely mark animals uniquely. Our idea was to deposit an RFID tag externally on the fur of animals and secure it in place with some sort of glue. We pictured something like an orchid depositing pollen on insects...But I was always worried the glue might get in an animal's eyes or mouth etc. Nowadays, with AI, it might be much more reasonable to do something like this safely (e.g. know when an animal's eyes are out of the way). Another idea was to use non-toxic dye that a camera could detect so that you could work out the ratio of new and previous captures, but again, never really pursued it. You could possibly also collect DNA non-invasively, although this adds a step for ID. Anyway, I think it could be a really useful tool, especially if it removes the process of manual handling altogether. More than happy to chat about it and best of luck with the development if you decide to go ahead (and this could help!
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Rob
1 December 2023 2:42pm
The Australians have invented this already for a completely different purpose - if you fill it with hair dye instead of 1080 gel it will spary a unique pattern of droplets on the target animals. You need a post-spray picture, but that should be doeable.
Lars Holst Hansen
Aarhus University
1 December 2023 7:37pm
One thing to keep in mind is that researchers often want or at least would like to get certain metadata on the tagged animals like sex, size, weight, apperent fitness etc. Without these the questions you can ask can get rather limited. Also, it will also often be highly desired to take samples like blood, hair, other tissue e.g.
In addition, there can be cases where it may be better not to tag the animal if it is not the right age group, is too small to carry the tag, seems like it is not in a good shape etc.
I think it will take quite an effort to get automated systems (capture robots) to make these decisions to a degree you can trust.
Cheers,
Lars
Lars Holst Hansen
Aarhus University