Journal article

Dispersal traits may reflect dispersal distances, but dispersers may not connect populations demographically

Jill Lancaster, Barbara J Downes

Oecologia | Springer | Published : 2017


Ecological traits that reflect movement potential are often used as proxies for measured dispersal distances. Whether such traits reflect actual dispersal is often untested. Such tests are important because maximum dispersal distances may not be achieved and many dispersal events may be unsuccessful (without reproduction). For insects, many habitat patches harbour ‘resident’ species that are present as larvae (sedentary) and adults (winged and dispersing), and ‘itinerant’ species present only as adults that have dispersed from elsewhere and fail to reproduce. We tested whether itinerancy patterns were temporally consistent, and whether itinerant and resident species differed in wing morpholo..

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Awarded by Australian Research Council

Funding Acknowledgements

We thank the many people who helped with field collections at various times, including Claire Allison, Wim Bovill, Alena Glaister, Steve Horn, Ashley Macqueen, Bobbi Peckarsky, Jared Polkinghorne, Bob Smith and Allyson Yarra. We are deeply indebted to Wim Bovill and Alena Glaister for their stellar assistance with identifications. This project was supported by a Discovery Grant from the Australian Research Council (DP120103145) awarded to JL and BJD. Adult sampling in 2015 was carried out in conjunction with an NSF Postdoctoral Extension awarded to R. Smith and hosted by the University of Melbourne.