article published yes Nicholas H Barton author 4880FE40-F248-11E8-B48F-1D18A9856A870000-0002-8548-5240 Godfrey Hewitt author 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 Nature1982 eng 0018-067X 1365-254010.1038/hdy.1982.29 482237 - 249 yes N.H. Barton, G. Hewitt, Heredity 48 (1982) 237–249. Barton, Nicholas H., and Godfrey Hewitt. “A Measurement of Dispersal in the Grasshopper Podisma Pedestris (Orthoptera: Acrididae).” <i>Heredity</i>, vol. 48, no. 2, Springer Nature, 1982, pp. 237–49, doi:<a href="https://doi.org/10.1038/hdy.1982.29">10.1038/hdy.1982.29</a>. Barton NH, Hewitt G. 1982. A measurement of dispersal in the grasshopper Podisma pedestris (Orthoptera: Acrididae). Heredity. 48(2), 237–249. Barton, N. H., &#38; Hewitt, G. (1982). A measurement of dispersal in the grasshopper Podisma pedestris (Orthoptera: Acrididae). <i>Heredity</i>. Springer Nature. <a href="https://doi.org/10.1038/hdy.1982.29">https://doi.org/10.1038/hdy.1982.29</a> 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> N. H. Barton and G. Hewitt, “A measurement of dispersal in the grasshopper Podisma pedestris (Orthoptera: Acrididae),” <i>Heredity</i>, vol. 48, no. 2. Springer Nature, pp. 237–249, 1982. Barton, Nicholas H, and Godfrey Hewitt. “A Measurement of Dispersal in the Grasshopper Podisma Pedestris (Orthoptera: Acrididae).” <i>Heredity</i>. Springer Nature, 1982. <a href="https://doi.org/10.1038/hdy.1982.29">https://doi.org/10.1038/hdy.1982.29</a>. 36692018-12-11T12:04:32Z2022-01-21T12:31:06Z