Fig. 1From: Mind the gap! The mitochondrial control region and its power as a phylogenetic marker in echinoidsRepresentation of echinoid complete mitochondrial genomes assembled from NGS data, showing gene annotation and coverage. The annotated genomes are represented by four echinoid species: Hemicentrotus pulcherrimus, Strongylocentrotus fragilis, Mesocentrotus franciscanus, and Strongylocentrotus intermedius, corresponding to GenBank accession numbers: KC898202, KC898198, KC898199, and KC898200, respectively. Annotations are given at the outer margin of the external circle. Concentric circles represent the corresponding coverage for each of the represented species mitogenomes. Data was obtained from Kober and Bernardi [86, 87]. Enlarged segment illustrates the position of the various primers used in the current study. Coverage was calculated in BRIG [88], after read mapping with Bowtie2 [89] (using the predefined alignment threshold “very-sensitive”). Annotations are based on those for H. pulcherrimus (GenBank accession no. NC_023771) and radial plots generated using BRIGBack to article page