mitogenome

ABSTRACTThe populations of native iguanas in the Caribbean Lesser Antilles are threatened by the wide occur-rence and spread of non-native iguanas. Until recently, competitive hybridization was not believed tothreaten the Saba Green Iguana, a subpopulation ofIguana  iguana(Linnaeus, 1758) from the island ofSaba. However, the arrival of non-native iguanas has put the native population at risk, leading to achange in the conservation status of the Saba Green Iguana to Critically Endangered, according toguidelines from the International Union for the Conservation of Nature. Here, we generated the com-plete mitogenome of the Saba Green Iguana using Oxford Nanopore long-read technology. The mito-genome is 16,626 bp long and has 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and acontrol region (1194 bp). Noteworthy, this is only the second published mitogenome for theIguanaiguanaspecies complex, despite the known high intraspecific genetic variation.

The hydrozoan species Nemalecium lighti (Hargitt, 1924) is widely distributed in tropical marine waters around the world. Here we report the complete linear mitochondrial genome of N. lighti from Sint Eustatius (Lesser Antilles). The mitochondrial genome with a length of 14,320 bp encodes for 13 protein-coding genes, two tRNA genes, and two rRNA genes. Gene arrangement differs from that found in other species of the same taxonomic order and a phylogenetic analysis shows that based on mitochondrial genes, N. lighti clusters outside of the Leptothecata, rendering the order paraphyletic.