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However, these results should encourage a full range of experimental trials from neuroscientists, urban ecologists, pest control professionals (PMPs) and conservationists who seek randomized samples or who work with trap-shy species. More monitoring of this design is needed before future conclusions can be drawn. Importantly, we found a low latency following capture, as released animals showed no instances of increased exploratory or cautious behaviors such as rearing or sniffing, near the hidden traps. There were no signs of low social status (e.g., scar markings, parasitism, or poor health). Video surveillance revealed no obvious signs of non-random sampling as all trapped rats were representative of a broad range of sizes and ages. During this time, 32 individuals were captured (25 Norway rats and 7 house mice) for a 94% catch rate. Animals triggered the trap 34 times during our 1-month preliminary assessment. Here, we report our initial purpose, design and preliminary results.
At a time predefined by the user, the triggering mechanism drops a transparent cover over the animal, preventing it from fleeing and enabling either transport to the laboratory, mark-and-release or disposal. The neophobic reaction could then be significantly reduced because animals do not need to enter any trap-like objects-instead they move and feed on a familiar surface. In addition to being hard to detect, the trap enables setting several parameters of animal movement and detection before the trap is triggered. To address these problems, we developed an inconspicuous, hanging live-trap prototype. This is problematic for research because non-random samples may lead to over-generalization and false conclusions. Consequently, individuals of the lowest social ranks, those in poorest health, and the slowest learners are more likely to be captured. Thus, animals captured in traditional traps may either be the least risk-averse, or most desperate. Most traps are novel to the natural environment and elicit neophobic, or trap-shy, behaviors. Live-trapping of urban rodents and other small mammals poses several challenges for researchers and pest control professionals (PMPs). 2Department of Biological Sciences, Fordham University, Bronx, NY, United States.
1Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland.Rafal Stryjek 1 *, Artur Kalinowski 1 and Michael H.