A predicted niche shift corresponds with increased thermal resistance in an invasive mite, Halotydeus destructor
By Matt Hill, Steven L. Chown, A. Hoffmann. 2013
97 citations recorded by the source corpus.
Aim Predicted distributions of invasive species are often not congruent between their realized native and introduced ranges, but the reasons for this are rarely investigated empirically. We tested for niche shift in an invasive species using a simple framework combining environmental niche models (ENMs) and nichelimiting thermal tolerance traits. Location Australia and South Africa. Methods The red-legged earth mite, Halotydeus destructor, native to South Africa, is a major agricultural pest in Australia and has expanded its range to areas not predictable from its native range in the last 40 years. Revisiting recently constructed ENMs for H. destructor, we select populations in both native and invasive ranges that appear to occupy different niches. We characterize thermal tolerance traits and test for acclimation patterns of cold tolerance of these H. destructor populations to test for niche shifts. Results Australian populations had an increased upper thermal threshold for movement and were able to recover from cold stress more rapidly than South African populations. Australian populations also differed in trait means from the likely source population in South Africa. Acclimation patterns were conserved across ranges for most populations, with 10 °C acclimation lowering the onset of and recovery from cold tolerance and 15 °C raising them when compared with field-acclimated populations. Main conclusions These results support the prediction, based on ENMs, that H. destructor may have undergone a niche shift by adapting to environmental conditions in Australia. The increase in thermal resistance has implications for how this invasive species will respond to future climate change.
Subfields: Ecological Modeling, Ecology, Insect Science
View Paper: https://www.semanticscholar.org/paper/0fe08ae9347f768436574182233cf2cb817103c8
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Ecological Modeling
In Ecology
Citations in the corpus
- Niche breadth predicts geographical range size: a general ecological pattern. (2013, result): “This is supported by recent evidence of rapid shifts in habitat specificity among birds (Barnagaud et al. 2011) and niche expansion following invasion in mites (Hill et al. 2013).”
- Evolution of Ecological Niche Breadth (2017, background): “As an example of the first scenario, Hill et al. (2013) found that invasive populations of the red-legged earth mite (Halotydeus destructor) had greater heat tolerance (measured experimentally) than populations in the native South African range.”