Fortuynia

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 : 794-795

Fortuynia e. micromorpha

The populations of F. e. micromorpha were overlapping in NMDS conducted on females as well as on males ( Fig. 5 ). This was true for the raw data as well as for the size-corrected data, although in size-corrected data of females a separation between the population from Umdloti and the populations from Umkomaas and Mtwalume (and partly also Sheffield) was present.

LDAs on both raw and size-corrected data of F. e. micromorpha females revealed a separation caused by the first two axes between the populations from Umdloti, Umkomaas, Mtwalume, and Sheffield, whereas the latter two formed a cluster in the size-corrected data ( Fig. 5 ). The variables with highest loadings (and thus most responsible for separation between populations) in the raw data were nwda, nwdp, and dcg on axis 1 and ll, nwda, gl, al, and aw on axis 2. In the size-corrected data, highest loadings were present in nwda on axis 1 and in nwda and nwdp on axis 2 (Supporting Table S 2). The power of classification by LDA was low: 10% of specimens in raw and 15% in size-corrected data were correctly classified. In accordance with this result, PERMANOVA on both raw and size-corrected data revealed no significant differences between the female populations .

In contrast to the females, the males from the four populations of F. e. micromorpha were not clearly separated by LDA. In both raw and size-corrected data, small overlapping areas were present between the populations. In the raw data, variables with highest loadings were ll and dcg on axis 1 and nwdp and nwdm on axis 2. Variables with highest loadings in size-corrected data were ll and dcg on axis 1 and ll and nwdp on axis 2 (Supporting Table S2). The power of classification by LDA was better than in females; 39.39% were correctly classified in raw and 36.36% in size-corrected data. PERMANOVA showed that there were significant differences (p <0.01) between at least one of the male populations and the others in both raw and size-corrected data. Pairwise comparisons of the populations revealed significant differences (Bonferroni corrected p value p <0.05) only between the populations from Umdloti and Umkomaas in size-corrected data.

Significant differences between the dispersion of populations could not be detected in any sex, or in raw or size-corrected data.

Figures

Fig. 5 Graphs showing results of multivariate analyses performed on size-corrected data of four different Fortuynia e. micromorpha populations; left side non-metric multidimensional scaling (NMDS), right side linear discriminant analysis (LDA)