The complete annotated mitochondrial genome of <i>Cerastoderma glaucum</i> (Bruguière, 1789) from the Baltic Sea

<i>Cerastoderma glaucum is a key</i> intertidal bivalve in the north-east Atlantic<i>,</i> serving as a trophic resource for fish and birds. Its mitochondrial genome comprises 14,953 bp, encoding 13 protein-coding genes, 2 rRNA genes, and 22 tRNA genes. Gene structure resembles <i>Cerastoderma edule</i> but lacks an additional methionine tRNA. Phylogenetic analysis revealed close affinity between Baltic and English samples (p-distance = 0.027). No mitochondrial heteroplasmy was detected in mature male gonads, suggesting <i>C. glaucum</i> is not a doubly uniparental inheritance (DUI) species. These findings contribute to understanding mitogenomic variation and reproductive biology in bivalves inhabiting dynamic coastal ecosystems .