Phylogenetic position of the cryopelagic codfish genus Arctogadus Drjagin, 1932 based on partial mitochondrial cytochrome b sequences

Møller, Peter Rask; Jordan, Anders D.; Gravlund, Peter; Steffensen, John F.

doi:10.1007/s00300-001-0348-5

Cited by 34 publications

(18 citation statements)

References 14 publications

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“…Microsatellites are used for population genetic analysis but are seldom used alone for species hypothesis testing. The barcode sequences from a large number of both putative species, G. macrocephalus and G. ogac (Figure 6), show little variability and support earlier studies indicating that, at most, G. ogac is a subspecies of G. macrocephalus (Carr et al, 1999;Møller et al, 2002). Thus, G. macrocephalus is not endemic to the Pacific but has a distribution extending from the western and eastern Pacific through the Bering, Chukchi, and Beaufort Seas across the Arctic to eastern Canada and Greenland.…”

Section: Advances and Remaining Problems In Determining The Biodiverssupporting

confidence: 76%

Ichthyofaunal Baselines in the Pacific Arctic Region and RUSALCA Study Area

Mecklenburg¹,

Steinke²

2015

Oceanog

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Section: Advances and Remaining Problems In Determining The Biodiverssupporting

confidence: 76%

Ichthyofaunal Baselines in the Pacific Arctic Region and RUSALCA Study Area

Mecklenburg¹,

Steinke²

2015

Oceanog

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“…as the sister group to the remaining gadines examined and Microgadus spp. sensu lato (including Eleginus) as the sister group to the remaining 6 genera (not including Arctogadus; but see Møller et al 2002), though its relationship to Pollachius was not supported by bootstrap analysis. However, Pogson and Mesa (2004) and Teletchea et al (2006) confirm these relationships of Trisopterus and Microgadus to the remaining genera.…”

Section: Genomic Phylogenetic Resultsmentioning

confidence: 97%

“…Bootstrap support greater than 95% was obtained for no more than 4 of the 10 nodes, and only a single node was supported at this highest level of consensus and consistency by all 3 methods. Subsequently, Møller et al (2002) added data on Arctogadus and Pogson and Mesa (2004), based on 2 nuclear loci, and Teletchea et al (2006), based on 1530 bp of mtDNA sequence, both obtained improved bootstrap for some of these relationships (see Discussion); however, discrepancies still remain and neither study focused on the biogeographic and taxonomic questions raised by the phylogeny of this group.…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial genomics of gadine fishes: implications for taxonomy and biogeographic origins from whole-genome data sets

Coulson

Marshall

Pepin

et al. 2006

Genome

139

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Phylogenetic analysis of 13 substantially complete mitochondrial DNA genome sequences (14,036 bp) from 10 taxa of gadine codfishes and pollock provides highly corroborated resolution of outstanding questions on their biogeographic evolution. Of 6 resolvable nodes among species, 4 were supported by >95% of bootstrap replications in parsimony, distance, likelihood, and similarly high posterior probabilities in bayesian analyses, one by 85%-95% according to the method of analysis, and one by 99% by one method and a majority of the other two. The endemic Pacific species, walleye pollock (Theragra chalcogramma), is more closely related to the endemic Atlantic species, Atlantic cod (Gadus macrocephalus), than either is to a second Pacific endemic, Pacific cod (Gadus macrocephalus). The walleye pollock should thus be referred to the genus Gadus as originally described (Gadus chalcogrammus Pallas 1811). Arcto-Atlantic Greenland cod, previously regarded as a distinct species (G. ogac), are a genomically distinguishable subspecies within pan-Pacific G. macrocephalus. Of the 2 endemic Arctic Ocean genera, Polar cod (Boreogadus) as the outgroup to Arctic cod (Arctogadus) and Gadus sensu lato is more strongly supported than a pairing of Boreogadus and Arctogadus as sister taxa. Taking into consideration historical patterns of hydrogeography, we outline a hypothesis of the origin of the 2 endemic Pacific species as independent but simultaneous invasions through the Bering Strait from an Arcto-Atlantic ancestral lineage. In contrast to the genome data, the complete proteome sequence (3830 amino acids) resolved only 3 nodes with >95% confidence, and placed Alaska pollock outside the Gadus clade owing to reversal mutations in the ND5 locus that restore ancestral, non-Gadus, amino acid residues in that species.

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“…This is mostly due to the troublesome nature of character polarity and homology in these fishes, in turn related to the high level of homoplasy and the number of reversals and losses in character states (see Dunn 1989). In the last decade, several molecular phylogenies focusing on gadid intrarelationships appeared (Carr et al 1999;Møller et al 2002;Pogson & Mesa 2004;Bakke & Johansen 2005;Coulson et al 2006;Teletchea et al 2006;von der Heyden & Matthee 2008;Roa-Varón & Ortí 2009). Teletchea et al (2006) based on the combined morphological-molecular approach recognized four subfamilies within the Gadidae, namely the Gadinae, Gaidropsarinae, Lotinae and Phycinae.…”

Section: Discussionmentioning

confidence: 99%

The Miocene gadid fishPalimphemus ancepsKner, 1862: a reappraisal

2012

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The gadid fish Palimphemus anceps Kner, 1862 is redescribed in detail based on 43 specimens from the Miocene deposits of St. Margarethen, in the Eisenstadt-Sopron Basin, Burgenland, Austria. The morphoanatomical analysis of the material referred to Palimphemus anceps revealed that it can be distinguished from other members of the family Gadidae Rafinesque, 1810 by a unique combination of characters, including: elongated and laterally compressed body, head length about ⅓ of SL, large massive neurocranium with outer margins of the frontals thickened and ornamented by longitudinal pits and ridges along the ventral surface, hyomandibula with large ventrally directed preopercular process, opercle with a thick horizontal rib arising from the articular condyle, anal-fin insertion well behind the first dorsal-fin origin; preanal distance exceeding the base length of the first anal fin, length of the first anal-fin base reduced, 45-46 (18 + 27/28) vertebrae, third dorsal fin with 17-21 rays, first anal fin with 18-21 rays, second anal fin with 18-19 rays, caudal fin with 41-43 rays, and pectoral fin with 15-18 rays. Palimphemus anceps appears to be a basal gadine closely related to the genus Micromesistius Gill, 1867. Like other basal gadine genera-Gadiculus Guichenot, 1850, Micromesistius and Trisopterus Rafinesque, 1814-Palimphemus anceps possibly was a thermophilous gadid that inhabited the shallow waters of the central Paratethys during the Middle Miocene.

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Phylogenetic position of the cryopelagic codfish genus Arctogadus Drjagin, 1932 based on partial mitochondrial cytochrome b sequences

Cited by 34 publications

References 14 publications

Ichthyofaunal Baselines in the Pacific Arctic Region and RUSALCA Study Area

Ichthyofaunal Baselines in the Pacific Arctic Region and RUSALCA Study Area

Mitochondrial genomics of gadine fishes: implications for taxonomy and biogeographic origins from whole-genome data sets

The Miocene gadid fishPalimphemus ancepsKner, 1862: a reappraisal

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