How "wild" are hatchery salmon? Conservation policy and the contested framing of nature in Canada and the United States

The idea of the Anthropocene presents a paradox for conservation: to restore and protect wild species and ecosystems, greater human intervention is required through efforts such as artificial propagation. This paradox is evident in efforts to conserve Pacific salmon. Salmon hatcheries produce millions of salmon to augment wild populations and sustain fishing industries, but emerging knowledge about salmon genomics has called into question the "wildness" of hatchery salmon. This article examines how the scientific uncertainties regarding wild species are contested by a range of stakeholders and how particular frames become concretized in policy frameworks. Despite the significance of laws and policies to the governance of such hybrid species, they have received limited attention. Drawing on archival documents, legislation, policies, government reports, and media sources, we conduct a cross-national comparative analysis of how wildness is framed in policy debates in Canada and the United States. We find that hatchery-born salmon occupy a position at the threshold of scientific and cultural definitions of wildness and this ambiguity facilitates political contests among groups with divergent interests in conservation and views of the human-nature relationship. As a result, hatchery salmon have been regulated differently across time and geographic and jurisdictional space. These findings contribute to an expanding literature on conservation in the Anthropocene and managing wild species.