![]() ![]() Population size management of wild boars in Sweden is predominantly carried out by hunting at bait sites or by driven hunts with hunting dogs. The wild boar ( Sus scrofa) population and its distribution is rapidly increasing in Sweden. skin abrasions, subcutaneous haemorrhage). charging into the trap walls) were documented in trapped wild boars with no or minor physical injuries (e.g. Behavioural alterations indicative of capture-induced stress (e.g. Trap-related pathological findings due to trauma were documented in 13 of the 20 subadults that were necropsied. It was more common for animals to charge against the mesh walls of the trap upon human approach compared to upon initial capture when the trap door closed. Single captured individuals showed more escape behaviours and reacted more strongly to external stimuli than individuals captured in a group. However, we only found a difference between the evening and morning in the Wilcoxon matched pairs test after the Sequential Bonferroni correction, where the wild boars spent more time foraging in the evening than in the morning. Using Friedman’s ANOVA, there was an overall difference in the time spent foraging. The wild boars spent less time resting in the evening than in the night and morning. Selected behavioural traits were compared with pathological changes (trap-related lesions) found at necropsy of the 20 subadults, to determine if these variables were useful proxies of capture-induced stress in wild boar. Behavioural assessments were conducted after filming 12 capture events of in total 38 wild boars (five adults, 20 subadults, 13 piglets). For improved animal welfare evaluation, our aim was to study wild boar behaviour during live-trapping in a 16 m 2 square corral-style trap. Approval of trap constructions is based on gross necropsy findings of 20 trapped and shot wild boars. Live-trap capture of wild boar ( Sus scrofa) followed by killing inside the trap by gunshot is a recently introduced but disputed hunting method in Sweden. Trap-capture of wild animals should minimise negative effects on animal welfare, irrespective of whether the animals are trapped for hunting, research, or management purposes. Wildlife traps are used in many countries without evaluation of their effect on animal welfare. The Creative Commons Public Domain Dedication waiver ( ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
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