Cristin-resultat-ID: 1823823
Sist endret: 19. februar 2021, 12:53
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry

Bidragsytere:
  • Marvin Choquet
  • Gauthier Burckard
  • Stig Skreslet
  • Galice Guillaume Hoarau og
  • Janne E. Søreide

Tidsskrift

Limnology and Oceanography
ISSN 0024-3590
e-ISSN 1939-5590
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2020
Open Access

Importkilder

Scopus-ID: 2-s2.0-85089441358

Beskrivelse Beskrivelse

Tittel

No evidence for hybridization between Calanus finmarchicus and Calanus glacialis in a subarctic area of sympatry

Sammendrag

In the North Atlantic and the Arctic Ocean, four species of the copepod genus Calanus dominate the zooplankton biomass. Because of their morphological resemblance, knowledge of their respective distribution range has long been biased by misidentification, until the recent use of molecular tools uncovered numerous areas of sympatry. As hybridization between Calanus finmarchicus and Calanus glacialis has been claimed in the East‐Canadian Arctic based on microsatellites, we investigated further the potential for interbreeding in newly uncovered areas of sympatry. Calanus species and stage composition were analyzed during winter in two Norwegian subarctic fjords, using molecular markers developed specifically for species identification and hybrid detection between C. finmarchicus and C. glacialis. Overall, C. glacialis were the most abundant throughout the winter, followed by C. finmarchicus and Calanus hyperboreus with only a few records of Calanus helgolandicus. The presence of C. glacialis, C. hyperboreus, and C. finmarchicus' nauplii was recorded, indicating that these species reproduce locally. In January and February, the simultaneous occurrence of males and females of both C. finmarchicus and C. glacialis suggested a potential for interspecies mating. However, genetic admixture tests performed on all 1126 individuals revealed no signal of hybridization, implying a strong reproductive isolation mechanism. We conclude that no evidence supports a potential for hybridization between C. finmarchicus and C. glacialis.

Bidragsytere

Marvin Choquet

  • Tilknyttet:
    Forfatter
    ved Fakultet for biovitenskap og akvakultur ved Nord universitet
  • Tilknyttet:
    Forfatter
    ved Avdeling for arktisk biologi ved Universitetssenteret på Svalbard

Gauthier Burckard

  • Tilknyttet:
    Forfatter
Inaktiv cristin-person

Stig Skreslet

  • Tilknyttet:
    Forfatter
    ved Fakultet for biovitenskap og akvakultur ved Nord universitet

Galice Guillaume Hoarau

  • Tilknyttet:
    Forfatter
    ved Fakultet for biovitenskap og akvakultur ved Nord universitet

Janne Søreide

Bidragsyterens navn vises på dette resultatet som Janne E. Søreide
  • Tilknyttet:
    Forfatter
    ved Avdeling for arktisk biologi ved Universitetssenteret på Svalbard
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