Allozyme and mitochondrial DNA variation in orange roughy, Hoplostethus atlanticus (Teleostei: Trachichthyidae): little differentiation between Australian and North Atlantic populations

Elliott, Nicholas; Smolenski, Adam J.; Ward, R. D.

doi:10.1007/bf00354326

Cited by 29 publications

(14 citation statements)

References 33 publications

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“…Genetic homogeneity, or near-homogeneity, is not uncommon. For example, the deep sea orange roughy (Hoplostethus atlanticus) showed F ST values of only 0.010 (allozymes) and 0.008 (mtDNA) between Australian and North Atlantic samples separated by about 22,000 km (Elliott et al, 1994). Similar findings were reported for another deep sea species, Beryx splendens (Hoarau and Borsa, 2000).…”

Section: Marine Fishsupporting

confidence: 79%

The importance of identifying spatial population structure in restocking and stock enhancement programmes

2006

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Section: Marine Fishsupporting

confidence: 79%

The importance of identifying spatial population structure in restocking and stock enhancement programmes

2006

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“…One of the species barcoded here, Hoplostethus atlanticus (orange roughy), showed only 0.18% divergence between 77 Australian specimens and 96 North Atlantic specimens in a mtDNA RFLP study (Elliott et al 1994, also see Smith 1986). The similarly deep-sea Beryx cf.…”

Section: Discussionmentioning

confidence: 84%

DNA barcoding of shared fish species from the North Atlantic and Australasia: minimal divergence for most taxa, but Zeus faber and Lepidopus caudatus each probably constitute two species

Ward

Costa²,

Holmes³

et al. 2008

Aquat. Biol.

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Fifteen fish species, totalling 149 specimens, were cytochrome c oxidase I sequencedbarcoded -from Northern (Atlantic and Mediterranean) and Southern (Australasian) Hemisphere waters. Thirteen species showed no significant evidence of spatial genetic differentiation for this gene, although small sample sizes reduced statistical power. For marine fish, barcodes collected in one part of a species range are likely to be useful as identifiers in all other parts of its range. Two species did show striking north-south differentiation, with F ST values of 0.84 and 0.96 (both p << 0.001). One of these, the silver scabbardfish Lepidopus caudatus, showed 2.75% genetic distance between northern and southern clades. The other, John dory Zeus faber, showed 7.44% differentiation between northern and southern clades. All specimens of these 2 species fell correctly into the northern or southern clade. We suggest that both taxa conceal a currently unrecognised, cryptic species, and recommend further taxonomic and genetic investigation.

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“…A populations share a recent evolutionary history at the worldwide scale, which in turn implies inter-oceanic gene flow. Some other deep-sea fishes (Coryphaenoides armatus, Hoplostethus atlanticus) also show remarkable genetic homogeneity at the inter-oceanic scale [4][5][6]. In deep-sea species such as B. splendens, gene flow can be due to recent or present stepwise migration along oceanic ridges and continental margins, or to transoceanic expansion of the species' range.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies have reported genetic differences at the regional scale, as in the hoki Macruronus novaezelandiae [3]. Other studies have revealed remarkable homogeneity at a global scale, as in the orange roughy Hoplostethus atlanticus and in C. armatus [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Extensive gene flow within sibling species in the deep-sea fish Beryx splendens

Hoarau

Borsa

2000

Comptes Rendus de l'Académie des Sciences - Series III - Scienc

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-Molecular markers allow insights into the population biology and ecology of deep-sea organisms, which are usually hardly accessible to direct observation and poorly known. Such a study was undertaken here for the deep-sea fish Beryx splendens, a species of growing interest to fisheries. B. splendens populations were sampled on seamounts and continental margins in the southwestern Pacific (New Caledonia, New Zealand, southeastern Australia) and in the northeastern Atlantic. Two hundred and fifty individuals were characterised by their single-strand DNA conformation (SSCP) of a z 360-base-pair (bp) fragment of the mitochondrial cytochrome b gene, amplified by the polymerase chain reaction (PCR). Two major SSCP haplotypes were observed in New Caledonia, a and w, whose frequencies were negatively correlated along a north-to-south cline. All SSCP haplotypes in the total sample were sequenced on 273 bp. The phylogenetic tree of B. splendens haplotype sequences, rooted by two B. decadactylus sequences, showed that a and w belong to distinct mitochondrial clades, A and W, which are separated by z 4-6 % nucleotide divergence. Thirty individuals from New Caledonia were characterised by their DNA fingerprint from arbitrary-primed PCR. The distribution of individualpairwise similarity indices was strongly bimodal. The larger similarity values all corresponded to comparisons within a clade (A or W) while the lower values were all between clades. Therefore, there was a strict association between the mitochondrial type and the DNA (presumably, nuclear DNA) fingerprint of an individual. Altogether, these results point to the existence of two biological species (sp. A and sp. W) within the current taxon B. splendens. No within-species differentiation was detected at the regional scale (New Caledonia). A remarkable result is that the three cytochrome b haplotypes of northeastern Atlantic B. cf. splendens sp. A were also the three commonest in the southwestern Pacific populations of this species. Such a level of homogeneity in the distribution of haplotypes suggests there is, or recently has been, gene flow at the inter-oceanic scale.Beryx splendens / geographic structure / systematics / cytochrome b / DNA fingerprints Résumé -Flux géniques élevés chez deux espèces jumelles identifiées chez le poisson de profondeur Beryx splendens. Les marqueurs génétiques moléculaires permettent d'aborder la biologie et l'écologie des populations d'organismes des grands fonds marins, peu accessibles à l'observation directe et en général mal connus. Une telle étude a été ici entreprise chez le poisson de profondeur Beryx splendens, espèce d'intérêt halieutique croissant, dont les populations ont été échantillonnées sur les monts sousmarins et les marges continentales dans le Pacifique Sud-Ouest (Nouvelle-Calédonie, Nouvelle-Zélande, Australie du Sud-Est) et dans l'Atlantique Nord-Est. Deux-cent cinquante individus ont été caractérisés par la conformation ADN simple-brin (SSCP) d'un fragment de z 360 paires de bases (pb) du gène mitochond...

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Allozyme and mitochondrial DNA variation in orange roughy, Hoplostethus atlanticus (Teleostei: Trachichthyidae): little differentiation between Australian and North Atlantic populations

Cited by 29 publications

References 33 publications

The importance of identifying spatial population structure in restocking and stock enhancement programmes

The importance of identifying spatial population structure in restocking and stock enhancement programmes

DNA barcoding of shared fish species from the North Atlantic and Australasia: minimal divergence for most taxa, but Zeus faber and Lepidopus caudatus each probably constitute two species

Extensive gene flow within sibling species in the deep-sea fish Beryx splendens

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