2025-08-20 ミシガン大学
These maps show snapshots of wolves hunted per county over time during the study period. Image credit: From LM Merz et al., Sci. Adv., 2025 (DOI: 10.1126/sciadv.adu8945). This work is licensed under CC BY (https://creativecommons.org/licenses/by/4.0/).
<関連情報>
- https://news.umich.edu/hunting-wolves-reduces-livestock-deaths-measurably-but-minimally-according-to-new-study/
- https://www.science.org/doi/10.1126/sciadv.adu8945
合法化されたオオカミ狩猟がヒトとオオカミの相互作用に及ぼす捉えどころのない影響 Elusive effects of legalized wolf hunting on human-wolf interactions
Leandra M. Merz, Bernhard Clemm von Hohenberg, Nicolas T. Bergmann, Jeremy T. Bruskotter, and Neil H. Carter
Science Advances Published:20 Aug 2025
DOI:https://doi.org/10.1126/sciadv.adu8945
Abstract
Expanding gray wolf (Canis lupus) populations in Europe and North America contribute to increased risks of livestock predation, which can threaten human livelihoods and lead government agencies to target wolves for lethal removal. Public wolf hunting is a highly contentious strategy for mitigating these risks, yet few empirical studies examine its effectiveness in doing so. Using difference-in-differences and structural equation modeling of data from the northwestern US between 2005 and 2021, we analyzed impacts of wolf hunting on livestock predation by wolves and government removal of wolves in the same year and with a 1-year time lag while controlling for social and environmental variables. We found that public wolf hunting had a small negative effect on livestock predation but had no effect on government lethal removal of wolves in the same or subsequent years. Our findings challenge the assumption that wolf hunting is an effective management strategy for reducing livestock predation and lethal removal.
