The thermal dependency of locomotor performance evolves rapidly within an invasive species

Ecology and Evolution
Georgia KosmalaRichard Shine

Abstract

Biological invasions can stimulate rapid shifts in organismal performance, via both plasticity and adaptation. We can distinguish between these two proximate mechanisms by rearing offspring from populations under identical conditions and measuring their locomotor abilities in standardized trials. We collected adult cane toads (Rhinella marina) from invasive populations that inhabit regions of Australia with different climatic conditions. We bred those toads and raised their offspring under common-garden conditions before testing their locomotor performance. At high (but not low) temperatures, offspring of individuals from a hotter location (northwestern Australia) outperformed offspring of conspecifics from a cooler location (northeastern Australia). This disparity indicates that, within less than 100 years, thermal performance in cane toads has adapted to the novel abiotic challenges that cane toads have encountered during their invasion of tropical Australia.

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Aug 10, 2017·Royal Society Open Science·Georgia KosmalaRichard Shine

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Citations

Jul 25, 2019·Biology Letters·Christopher R Friesen, Richard Shine
Sep 29, 2019·Scientific Reports·Gregory P BrownRichard Shine
Jun 17, 2020·Integrative and Comparative Biology·Roshmi R SarmaLee A Rollins
Jun 2, 2020·Journal of Thermal Biology·Óscar Romero-BáezFrancisco Javier Muñoz-Nolasco
Mar 4, 2021·The Journal of Experimental Biology·Carla WagenerJohn Measey
Aug 24, 2021·The Journal of Experimental Biology·Carla WagenerJohn Measey

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Software Mentioned

lme4
R Studio
R Core

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