Schusteria ugraseni

Pfingstl, Tobias, Wagner, MaXimilian, Hugo-Coetzee, Julia Baumann Elizabeth A., Neethling, Jan Andries & Bardel-Kahr, Iris, 2022, Contrasting phylogeographic patterns of intertidal mites (Acari, Oribatida) along the South African shoreline, Organisms Diversity & Evolution (New York, N. Y.) 22 (3), pp. 789-801 : 797-798

Schusteria ugraseni

The populations of S. ugraseni also overlapped to a large degree in NMDS on both sexes ( Fig. 7 ). In the size-corrected data on females, the population from Winterstrand was separated from the other populations. The same trend was recognizable in raw data of females and in raw and size-corrected data of males, although the separation was less pronounced and the overlaps were larger in these cases.

LDAs on raw and size-corrected data on both sexes of S. ugraseni showed a clear separation of the population from Winterstrand and the other populations, which was furthermore more pronounced in males than in females ( Fig. 7 ). The population from Winterstrand was in all LDAs separated from the others on axis 1. The power of classification by LDA was higher in females than in males, and in both sexes, it was higher in the size-corrected data. In females, 40% were correctly classified in raw data and 51.43% in size-corrected data; in males, LDA correctly classified 14.81% in raw data and 25.93% in size-corrected data.

In females, the populations from Sheffield and Umkomaas clustered together in both raw and size-corrected data, albeit with only small overlapping areas ( Fig. 7 ). They were separated from the population from Umdloti on axis 2. PERMANOVA on raw and size-corrected data of female populations revealed significant differences (p <0.01) between at least one of the populations and the others. In pairwise comparisons, there were significant differences (p <0.05) between Winterstrand and Umdloti in raw data and between Winterstrand and each other population in size-corrected data .

In males, Sheffield and Umdloti clustered together in both raw and size-corrected data. The population from Umkomaas was separated from the other populations on axis 2, and the separation was more pronounced in the LDA on size-corrected data. Variables with highest loading in females were dbi, nwdp, and gw for axis 1 and dbi and nwdp for axis 2 in the raw data, and dbi, cw, and gw for axis 1 and dbi and nwdp for axis 2 in the size-corrected data. In males, the variables with highest loadings were bl, nwdp, and gw for axis 1 and gl, gw, al, and aw for axis 2 in the raw data. In size-corrected data, variables with highest loadings were dPtI and dbi for axis 1 and nwdp and gl for axis 2 (Supporting Table S4). PERMANOVA on male populations revealed no significant differences in raw data and significant (p <0.05) differences between at least one of the populations and the others in size-corrected data .

Significant differences (p <0.05) in dispersion were present between the populations from Umkomaas and Winterstrand in both sexes, but only in the size-corrected data. In both sexes, the dispersion was larger in Winterstrand than in Umkomaas.

Figures

Fig. 7 Graphs showing results of multivariate analyses performed on size-corrected data of four different Schusteria ugraseni populations; left side non-metric multidimensional scaling (NMDS), right side linear discriminant analysis (LDA)