A measurement of dispersal in the grasshopper Podisma pedestris (Orthoptera: Acrididae) Barton, Nicholas H ; https://orcid.org/0000-0002-8548-5240 Hewitt, Godfrey The dispersal rate of the grasshopper Podisma pedestris has been measured, with the aim of interpreting the width of a chromosomal cline. 171 adults were marked individually, and released within the cline. 169 movements were seen over three subsequent scorings; the distribution of distances, after correction for the loss of long distance dispersants, was close to a normal curve, but there was an initial shift of ten metres, perhaps towards a better habitat. The linear variance increased at about 214 m2 day- 1, which corresponds to a standard deviation of 207 m gen- 1/2 over a 20 day life span. Statistical uncertainty in this estimate can be expressed using a distribution-free maximum likelihood method, which gives support limits of 186- 270 m gen- 1/2. However, the main errors come from extrapolating from this experiment to the cline as a whole. Springer Nature 1982 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/3669 Barton NH, Hewitt G. A measurement of dispersal in the grasshopper Podisma pedestris (Orthoptera: Acrididae). <i>Heredity</i>. 1982;48(2):237-249. doi:<a href="https://doi.org/10.1038/hdy.1982.29">10.1038/hdy.1982.29</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1038/hdy.1982.29 info:eu-repo/semantics/altIdentifier/issn/0018-067X info:eu-repo/semantics/altIdentifier/e-issn/1365-2540 info:eu-repo/semantics/openAccess