Circumpolar genetic population structure of capelin Mallotus villosus

Præbel, Kim; Westgaard, Jon‐Ivar; Fevolden, Svein-Erik; Christiansen, Jørgen S.

doi:10.3354/meps07363

Cited by 32 publications

(28 citation statements)

References 46 publications

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“…The presence of a CO1 sequence from Davis Strait in the same clade as those from the Chukchi and Bering Seas supports Dodson et al's (2007) hypothesized distribution pattern for the Arctic clade, from the Bering Sea to the Labrador Sea via the Beaufort Sea and Canadian Arctic. The microsatellite study by Praebel et al (2008) showed complementary fine-scale structuring of M. villosus but did not include samples from within the greater portion of the geographic range of Dodson et al's (2007) Arctic clade.…”

Section: Osmeridae (Smelts)mentioning

confidence: 96%

“…Recently, several lines of evidence have been applied in analyses of capelin relationships (e.g., Stergiou 1989;Dodson et al 2007;Praebel et al 2008;Skurikhina et al 2010). Four highly divergent mitochondrial-DNA (mtDNA) clades were revealed in M. villosus from the North Atlantic, North Pacific, and Arctic Oceans by Dodson et al's (2007) analysis.…”

Section: Osmeridae (Smelts)mentioning

confidence: 99%

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Biodiversity of arctic marine fishes: taxonomy and zoogeography

2010

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Taxonomic and distributional information on each fish species found in arctic marine waters is reviewed, and a list of families and species with commentary on distributional records is presented. The list incorporates results from examination of museum collections of arctic marine fishes dating back to the 1830s. It also incorporates results from DNA barcoding, used to complement morphological characters in evaluating problematic taxa and to assist in identification of specimens collected in recent expeditions. Barcoding results are depicted in a neighbor-joining tree of 880 CO1 (cytochrome c oxidase 1 gene) sequences distributed among 165 species from the arctic region and adjacent waters, and discussed in the family reviews. Using our definition of the arctic region, we count 242 species with documented presence, if 12 species that likely are synonyms are excluded. The 242 species are distributed among 45 families.Six families in Cottoidei with 72 species and five in Zoarcoidei with 55 species account for more than half (52.5%) the species. This study produced CO1 sequences for 106 of the 242 species. Sequence variability in the barcode region permits discrimination of all species. The average sequence variation within species was 0.3% (range 0-3.5%), while the average genetic distance between congeners was 4.7% (range 3.7-13.3%). The CO1 sequences support taxonomic separation of some species, such as Osmerus dentex and O. mordax and Liparis bathyarcticus and L. gibbus; and synonymy of others, like Myoxocephalus verrucosus in M. scorpius and Gymnelus knipowitschi in G. hemifasciatus. They sometimes revealed the presence of additional species that were not entirely expected, such as an unidentified species of Ammodytes in the western Gulf of Alaska, most likely A. personatus; and an unidentified Icelus species of the I. spatula complex with populations in the western Gulf of Alaska and the northern Bering and Chukchi Seas which could be a new species or a species in synonymy. Reviewing distribution, we found that for 24 species the patterns assigned by authors understated historical presence in the arctic region, and for 12 species they overstated presence. For instance, Hippoglossoides robustus is counted as an arctic-boreal species rather than predominantly boreal, and Artediellus uncinatus as predominantly arctic rather than predominantly boreal. Species with arctic, predominantly arctic, or arctic-boreal distributions composed 41% of the 242 species in the region, and predominantly boreal, boreal, and widely distributed species composed 59%. For some continental shelf species, such as the primarily amphiboreal Eumesogrammus praecisus and Leptoclinus maculatus, distributions appear to reflect changes, including reentry into Arctic seas and reestablishment of continuous ranges, that zoogeographers believe have been going on since the end of land bridge and glacial times. This article belongs to the special issue "Arctic Ocean Diversity Synthesis"Electronic supplementary material The online version of this arti...

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Section: Osmeridae (Smelts)mentioning

confidence: 96%

Section: Osmeridae (Smelts)mentioning

confidence: 99%

Biodiversity of arctic marine fishes: taxonomy and zoogeography

2010

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“…Capelin spend most of their life feeding in offshore waters; at maturation, they undergo extensive inshore migrations to spawning grounds at either beach or demersal (at depths of up to 90 m) sites (Carscadden and Nakashima 1997). Previous genetic studies concluded that capelin in the north Atlantic are subdivided into two distinct clades: the northwest Atlantic (Newfoundland, St. Lawrence Estuary, and Hudson's Bay) and the northeast Atlantic (Iceland and Barents Sea) (e.g., Dodson et al 2007;Praebel et al 2008;Colbeck et al 2011). These geographically delineated clades show differences in vertebral number, fecundity, egg size, and spawning mode (Stergiou 1989).…”

Section: Introductionmentioning

confidence: 97%

“…In contrast to cod and herring (for which there are at least 20-50 published genetic studies on a variety of spatial scales; Reiss et al 2009), fewer than 10 population genetic studies have been conducted on capelin in the north Atlantic. The majority of these investigations have been on scales spanning their north Atlantic distribution (e.g., Praebel et al 2008;Colbeck et al 2011) or using mitochondrial DNA (mtDNA) markers (e.g., Dodson et al 1991Dodson et al , 2007, restricting their potential to examine finer scale reproductive units, such as between habitat types in close geographic proximity. Whereas mtDNA tends to show historic patterns of reproductive isolation and colonization, microsatellites have a relatively fast mutation rate that makes them effective for detecting recent, fine-scale divergence (Selkoe and Toonen 2006).…”

Section: Introductionmentioning

confidence: 99%

Lack of genetic divergence in capelin (Mallotusvillosus) spawning at beach versus subtidal habitats in coastal embayments of Newfoundland

et al. 2014

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Capelin (Mallotus villosus (Müller, 1776)), a focal forage fish in the north Atlantic, spawn on both beach and demersal (deep-water) sites throughout their circumpolar distribution. Although these habitats rarely occur in close proximity, demersal spawning sites within 4 km of beach spawning sites (subtidal) have recently been discovered in two coastal embayments in Newfoundland, Canada. The physical environment differs considerably between beach and subtidal spawning sites, creating the potential for local adaptation and genetic divergence of capelin from the two habitats, but this has never been investigated on a fine spatial scale. We use eight microsatellite loci to test for genetic divergence between capelin spawning at beach and subtidal sites within these two coastal regions in Newfoundland. We found no genetic differentiation between fish spawning at beach and subtidal sites or between the two regions. The results from this fine-scale study are in agreement with the lack of habitat-based structure reported in other studies examining beach and demersal sites separated by a larger geographic area. We suggest that instead of showing site fidelity and local adaptation, the facultative use of alternate spawning habitats may be a more successful strategy in an unpredictable environment.

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“…1) has several capelin populations: a number of small populations inhabiting fjords of the northern coast of Norway, and a large oceanic population with maturing individuals only migrating to the coast for spawning. Despite clear differences in life-history traits between coastal populations and the large oceanic population , no obvious genetic segregation between them has been detected (Mork and Friis-Sørensen 1983;Praebel et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Temporal stability of the maturation schedule of capelinMallotus villosusin the Barents Sea

Baulier

Heino

Gjøsæter

2012

Aquat. Living Resour.

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-Capelin in the Barents Sea are primarily harvested in a terminal fishery that targets maturing individuals. Theory predicts that, in a semelparous population (i.e., one in which reproduction is seasonal, synchronous, and followed by parental mortality), an unselective, terminal fishery (i.e., one in which most of the fish that are not caught will not have a new spawning opportunity) does not generate strong selection for changed age and size at maturation. The probabilistic maturation reaction norm (PMRN) method was applied to test this prediction and to detect possible temporal changes in length at maturation of Barents Sea capelin between 1978 and 2008. Maturation reaction norms suggest that maturation is age-independent in capelin, but that males require a larger size to attain the same maturation probability as females. No temporal trends in length at maturation could be detected, thus confirming the theoretical prediction. Furthermore, none of the candidate environmental variables tested to explain the temporal variability in length at maturation (water temperature and capelin biomass) consistently showed a significant correlation with the PMRN midpoints.

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Circumpolar genetic population structure of capelin Mallotus villosus

Cited by 32 publications

References 46 publications

Biodiversity of arctic marine fishes: taxonomy and zoogeography

Biodiversity of arctic marine fishes: taxonomy and zoogeography

Lack of genetic divergence in capelin (Mallotusvillosus) spawning at beach versus subtidal habitats in coastal embayments of Newfoundland

Temporal stability of the maturation schedule of capelinMallotus villosusin the Barents Sea

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