Abstract
While the impacts of black (Rattusrattus) and brown (Rattusnorvegicus) rats on human society are well documented—including the spread of disease, broad-scale environmental destruction, and billions spent annually on animal control—little is known about their ecology and behavior in urban areas due to the challenges of studying animals in city environments. We use isotopic and ZooMS analysis of archaeological (1550s–1900 CE) rat remains from eastern North America to provide a large-scale framework for species arrival, interspecific competition, and dietary ecology. Brown rats arrived earlier than expected and rapidly outcompeted black rats in coastal urban areas. This replacement happened despite evidence that the two species occupy different trophic positions. Findings include the earliest molecularly confirmed brown rat in the Americas and show a deep ecological structure to how rats exploit human-structured areas, with implications for understanding urban zoonosis, rat management, and ecosystem planning as well as broader themes of rat dispersal, phylogeny, evolutionary ecology, and climate impacts.
Original language | English |
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Article number | eadm6755 |
Number of pages | 11 |
Journal | Science Advances |
Volume | 10 |
Issue number | 14 |
DOIs | |
Publication status | Published - 3 Apr 2024 |
Bibliographical note
Funding Information:this project was supported by the Social Science and humanities Research council of canada (Banting postdoctoral fellowship, to e.G.), the leverhulme trust and British Academy (leverhulme/BA Small Grant, to e.G.), the Wenner-Gren Foundation (fieldwork dissertation grant, to e.G.), and United Kingdom Research and innovation (Frontiers in Research grant, to d.O. and e.G.). charleston data were collected in part by a US national Science Foundation Award (BcS #1920835, to B.P.-Z.).
Publisher Copyright:
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