Management of Biological Invasions (2018) Volume 9, Issue 3: 369–377 DOI: https://doi.org/10.3391/mbi.2018.9.3.18 Open Access © 2018 The Author(s). Journal compilation © 2018 REABIC Research Article Exotic predators may threaten another island ecosystem: A comprehensive assessment of python and boa reports from the Florida Keys Emma B. Hanslowe1,4,*, James G. Duquesnel1, Ray W. Snow2, Bryan G. Falk1,2, Amy A. Yackel Adams1, Edward F. Metzger III3, Michelle A.M. Collier2 and Robert N. Reed1 1U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526, USA 2South Florida Natural Resources Center, Everglades National Park, 40001 State Road 9336, Homestead, Florida 33034, USA 3Fort Lauderdale Research and Education Center, University of Florida, 3205 College Avenue, Fort Lauderdale, Florida 33314, USA 4Department of Fish, Wildlife, and Conservation Biology, Colorado State University, 1417 Campus Delivery, Fort Collins, Colorado 80523, USA Author e-mails:
[email protected] (EBH),
[email protected] (JGD),
[email protected] (RWS),
[email protected] (BGF),
[email protected] (AYA),
[email protected] (EFMIII),
[email protected] (MAMC),
[email protected] (RNR) *Corresponding author Received: 6 April 2018 / Accepted: 10 July 2018 / Published online: 31 August 2018 Handling editor: Luis Reino Abstract Summarizing historical records of potentially invasive species increases understanding of propagule pressure, spatiotemporal trends, and establishment risk of these species. We compiled records of non-native pythons and boas from the Florida Keys, cross-referenced them to eliminate duplicates, and categorized each record’s credibility. We report on 159 observations of six python and boa species in the Florida Keys over the past 17 years.