Extreme Mitogenomic Variation in Natural Populations of Chaetognaths.

ABSTRACT: The extent of within-species genetic variation across the diversity of animal life is an underexplored problem in ecology and evolution. Although neutral genetic variation should scale positively with population size, mitochondrial diversity levels are believed to show little variation across animal species. Here, we report an unprecedented case of extreme mitochondrial diversity within natural populations of two morphospecies of chaetognaths (arrow worms). We determine that this diversity is composed of deep sympatric mitochondrial lineages, which are in some cases as divergent as human and platypus. Additionally, based on 54 complete mitogenomes, we observed mitochondrial gene order differences between several of these lineages. We examined nuclear divergence patterns (18S, 28S, and an i

SUBMITTER: Marletaz F 

PROVIDER: S-EPMC5470650 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature