The mitochondrial genome of the deep-sea pyramid urchin <i>Echinocrepis rostrata</i> (Echinoidea: Holasteroida: Pourtalesiidae)

2024/03/03 by Matthew Stephenson, Avery S. Hiley, Greg W. Rouse +1 · 1 voice
Agricultural and Biological Sciences · Environmental Science · Earth and Planetary Sciences · #Echinoderm biology and ecology #Coral and Marine Ecosystems Studies #Marine Biology and Ecology Research

paper · pdf · doi:10.1080/23802359.2024.2333572

openalex publication_date 2024/03/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/15

Abstract

We present the mitochondrial genome of the deep-sea, epibenthic, irregular echinoid Echinocrepis rostrata, representing the first sequenced mitogenome of the order Holasteroida. The length of the complete E. rostrata mitochondrial genome is 15,716 base pairs, and its GC content is 34.87%. It contains 13 protein-coding genes, two rRNA genes, and 22 tRNA genes, whose order is identical to that of all other available echinoid mitogenomes. Phylogenetic analysis of available mitochondrial genomes, based on all coding loci, places E. rostrata as the sister group to spatangoids (heart urchins).

Citations

• MAFFT Multiple Sequence Alignment Software Version 7: Improvements in Performance and Usability
• IQ-TREE 2: New Models and Efficient Methods for Phylogenetic Inference in the Genomic Era
• MitoFinder: Efficient automated large‐scale extraction of mitogenomic data in target enrichment phylogenomics

Discussions

• Most sea urchin genetic research focuses on globe-shaped species, but thanks to Matthew Stephenson in the Greg Rouse lab @scrippsocean.bsky.social, we have the 1st mitochondrial genome for an “irregul [bsky, 2 points, 0 comments]

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