Supplementary material for PHEN-1291-R1.zipSperm measurement data, model outputs and R code for Messer and White-Cooper "Clustering sperm: A statistical approach to identify sperm morph numbers in the Drosophila obscura species group" (Manuscript ID: PHEN-1291.R1)

<p>The <em>Drosophila obscura</em> species group is sperm heteromorphic. One recent study found that <em>D. pseudoobscura</em> produces three sperm morphs, two parasperm and one eusperm, in contrast to the two morphs described in older studies of this species. Thus, the number of morphs made by some species in this clade is still in dispute. Here, we re-measure sperm of eight species including <em>D. pseudoobscura</em>. We used two statistical cluster analysis approaches to identify sperm morphs based on sperm and nucleus length, to test whether multiple parasperm morphs are present in more species than previously identified. This dataset includes the raw measurements, the R code for the statistical models, and the model ouputs. </p>