Figure 1.
Scanning Electron Microscopy (SEM) pictures of various specimens of Elphidium macellum.
Different individuals are shown on lateral (A–F) or on peripheral (G–J) view. For details about the terminology used to describe the important morphological characters, see Figure S1.
Figure 2.
Elphidiids complete SSU rDNA phylogeny.
Bayesian phylogeny implemented using the GTR+Γ model of evolution. RAxML bootstrap values and MrBayes posterior probabilities are shown at the nodes and solid circles indicate maximum node support (100/1.0). For each sequence, the DNA number is followed by the sampling location: CA (Halifax), RU (White Sea), NL (North Sea), CH (Patagonia), MED (Mediterranean Sea) and BRET (Brittany) and by the GenBank accession number.
Figure 3.
Predicted secondary structure of the partial SSU rRNA molecule of Elphidium macellum.
The numbers correspond to the helices forming the region or located next to it. The six hyper-variable expansion segments found in eukaryotes (e) and those specific to foraminifera (f) are shown in black boxes. For each expansion segment specific to foraminifera, the ESPs are represented in separate colour boxes, where the variable positions of the rRNA molecule are shown in grey boxes. Different colours are used to characterize the different ESPs and the same colour code is used to show the ribotypical diversity in Figure 4.
Figure 4.
Ribotypical diversity in Elphidium macellum.
The 12 different ribotypes composed of all different combinations of ESPs per locus are shown (A) and classified by abundance. The different colours used to characterize the different ESPs are the same used in Figure 3. In a total of 70 clones, the abundance of each ribotype is shown (B) and ranges from 26 for the ribotype number 1 to 0 for the ribotype number 12, which is not recovered in our analysis.