%0 Journal Article %A Galià-Camps, Carles %A Araujo Moreira, Ana Karla %A Carmona Barnosi, Leila %A Martín-Hervás Santos, María del Rosario %A Pola, Marta %A Palero, F. %A Cervera Currado, Juan Lucas %T New mitogenomes of Runcinidae and Facelinidae: two understudied heterobranch families (Mollusca: Gastropoda) %D 2024 %@ 2380-2359 %U http://hdl.handle.net/10498/34256 %X Here, we present the mitochondrial sequences of two sea slugs (Heterobranchia): Runcina aurata and Facelina auriculata, the latter being the type species of the family. The mitochondrial genomes are 14,282 and 14,171bp in length, respectively, with a complete set of 13 PCGs, 2 rRNAs, and 22 tRNAs. None of the mitogenomes show gene reorganization, keeping the standard mitogenomic structure of Heterobranchia. Nucleotide composition differs significantly between them, with R. aurata showing the most AT-rich mitogenome (25.7% GC content) reported to date in Heterobranchia, and F. auriculata showing a rich GC content (35%) compared with other heterobranch mitochondrial genomes. %K Mitochondrial genome %K phylogenomics %K neglected taxa %K type taxon %K systematics %K GC content %K specific primer design %~ Universidad de Cádiz