Global connections with some genomic differentiation occur between Indo‐Pacific and Atlantic Ocean wahoo, a large circumtropical pelagic fish

  title={Global connections with some genomic differentiation occur between Indo‐Pacific and Atlantic Ocean wahoo, a large circumtropical pelagic fish},
  author={Isabel Haro-Bilbao and Cynthia Riginos and John D. Baldwin and Mitchell T. Zischke and Ian R. Tibbetts and Joshua A. Thia and Giacomo Bernardi},
  journal={Journal of Biogeography},
Aim: Globally distributed pelagic fishes are typified by very low to negligible genetic differentiation at oceanic scales arising from high gene flow and (or) large population sizes. However, genomic approaches employing thousands of loci to characterise genetic variation can illuminate subtle patterns of genetic structure and facilitate demographic inference, such that effects arising from gene flow and population size can be partially decoupled. We used a population genomics approach to… Expand


Genome‐wide SNPs resolve spatiotemporal patterns of connectivity within striped marlin (Kajikia audax), a broadly distributed and highly migratory pelagic species
It is demonstrated that species capable of long‐distance dispersal in environments lacking obvious physical barriers to movement can display substantial population subdivision that persists over multiple generations and that may be facilitated by both neutral and adaptive processes. Expand
Genomic Differentiation and Demographic Histories of Atlantic and Indo-Pacific Yellowfin Tuna (Thunnus albacares) Populations
Recent developments in the field of genomics have provided new and powerful insights into population structure and dynamics that are essential for the conservation of biological diversity. As aExpand
RAD SNP markers as a tool for conservation of dolphinfish Coryphaena hippurus in the Mediterranean Sea: Identification of subtle genetic structure and assessment of populations sex-ratios.
A weak signature of genetic differentiation of the population closer to Gibraltar Strait in comparison to other Mediterranean populations, which might be related to introgression of individuals from Atlantic is identified. Expand
The molecular biogeography of the Indo‐Pacific: Testing hypotheses with multispecies genetic patterns
Although there is support for three previously described barriers, phylogeographic discordance in the Indo-Pacific Ocean indicates incongruity between processes shaping the distributions of diversity at the species and population levels. Expand
High connectivity on a global scale in the pelagic wahoo, Acanthocybium solandri (tuna family Scombridae)
The population genetic structure and phylogeography of wahoo were investigated on a global scale with intron six of lactate dehydrogenase‐A and mtDNA cytochrome b and this is the first example of a vertebrate with a single globally distributed population, a finding the authors attribute to extensive dispersal at all life stages. Expand
Model‐based demographic inference of introgression history in European whitefish species pairs'
The analyses reveal how the interplay between demography, selection and historical contingency has influenced the levels of diversity observed in previous whitefish phylogeographic studies and provides new insights into the historical demographic and selective processes that shaped the divergence associated with ecological speciation in European whitefish. Expand
Genetic Divergence, Reproductive Isolation, and Marine Speciation
Such studies show how a focus on the physiology, ecology, or sensory biology of reproductive isolation can help uncover the influence of particular genetic changes on reproductive isolation for marine (or terrestrial) taxa. Expand
Inferring the demographic history underlying parallel genomic divergence among pairs of parasitic and nonparasitic lamprey ecotypes
The results suggest that heterogeneous genomic differentiation and parallelism among replicate ecotype pairs have partly emerged through restricted introgression in genomic islands. Expand
Population genetic and phylogeographic structure of wahoo, Acanthocybium solandri, from the western central Atlantic and central Pacific Oceans
Given the level of geographic and individual sampling, wahoo thus far represent the sole example of a scombroid or xiphioid fish exhibiting coarse-grain genetic homogeneity across a broad, inter-oceanic range despite a deeply coalescing genealogical structure. Expand
Adaptive markers distinguish North and South Pacific Albacore amid low population differentiation
No genetic evidence was found for population substructure within the North Pacific, and no loci appeared to distinguish males from females, but potential functions for the putatively adaptive loci were identified and an annotated Albacore genome is required. Expand