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Jason J. Kolbe, Paul S. VanMiddlesworth, Neil Losin, Nathan Dappen and Jonathan B. Losos Climatic niche shift predicts thermal trait response in one but not both introductions of the Puerto Rican lizard Anolis cristatellus to Miami, Florida, USA Ecology and Evolution 2

Version of Record online: 12 JUN 2012 | DOI: 10.1002/ece3.263

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Global change is predicted to alter environmental conditions for populations in numerous ways: for example, invasive species often experience substantial shifts in climatic conditions during introduction from their native to non-native ranges. We combined modeling, field data, and a laboratory experiment to test for changing thermal tolerances during the introduction of the tropical lizard Anolis cristatellus from Puerto Rico to Miami, FL. As predicted from the changing thermal environment, laboratory acclimation and field acclimatization showed that the introduced South Miami population of A. cristatellus has diverged from its native-range source population by acquiring low-temperature acclimation ability.

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