Introgressive hybridization between the Atlantic and Pacific herrings (Clupea harengus and C. pallasii) in the north of Europe.
(2015) In Marine Biology 162. p.39-54- Abstract
- We present evidence of mitochondrial and nuclear introgression from the Atlantic herring Clupea harengus into the Pacific herring C. pallasii in northern European seas, where the two species have come into secondary contact following the post-glacial trans-Arctic invasion of Pacific herring to the Atlantic realm. Although the breeding areas of the two species are thought to be separate, 7 % of the resident Pacific herring in samples from the White Sea were found to possess Atlantic herring mitochondria. The percentage was even higher (21 %) in the local Balsfjord stock of the Norwegian Sea, whereas it was nil in Pechora Sea samples. Similar or somewhat lower levels of genomic admixture were estimated from four diagnostic or nearly... (More)
- We present evidence of mitochondrial and nuclear introgression from the Atlantic herring Clupea harengus into the Pacific herring C. pallasii in northern European seas, where the two species have come into secondary contact following the post-glacial trans-Arctic invasion of Pacific herring to the Atlantic realm. Although the breeding areas of the two species are thought to be separate, 7 % of the resident Pacific herring in samples from the White Sea were found to possess Atlantic herring mitochondria. The percentage was even higher (21 %) in the local Balsfjord stock of the Norwegian Sea, whereas it was nil in Pechora Sea samples. Similar or somewhat lower levels of genomic admixture were estimated from four diagnostic or nearly diagnostic nuclear allozyme loci. The absences of inter-locus and cytonuclear disequilibria, together with the patterns of mtDNA haplotype diversity, suggest recurrent backcrossing and hybridization over a long period in the post-glacial time frame. From a reassessment of published allozyme data, a hypothesis is presented that the patterns of intra-species geographical variation previously recorded in North European herrings may largely reflect varying levels of introgression. The study presents new information on the processes that affect the genetic structure of one of the most abundant fishes of the northern seas. It also adds to the knowledge on the occurrence of inter-species gene flow in marine fishes and on the consequences of trans-Arctic biotic invasions (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/29801678-c345-42c3-9f7f-ab90b6bb07db
- author
- Laakkonen, Hanna LU ; Strelkov, Petr ; Lajus, Dmitry L. and Väinölä, Risto
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Secondary Contact, Allozyme Locus, Gene Frequency Difference, Electronic Supplement Table, Allozyme Data
- in
- Marine Biology
- volume
- 162
- pages
- 39 - 54
- publisher
- Springer
- external identifiers
-
- scopus:84922076295
- ISSN
- 1432-1793
- DOI
- 10.1007/s00227-014-2564-x
- language
- English
- LU publication?
- yes
- id
- 29801678-c345-42c3-9f7f-ab90b6bb07db
- date added to LUP
- 2018-05-16 14:22:48
- date last changed
- 2022-01-31 03:28:41
@article{29801678-c345-42c3-9f7f-ab90b6bb07db,
abstract = {{We present evidence of mitochondrial and nuclear introgression from the Atlantic herring Clupea harengus into the Pacific herring C. pallasii in northern European seas, where the two species have come into secondary contact following the post-glacial trans-Arctic invasion of Pacific herring to the Atlantic realm. Although the breeding areas of the two species are thought to be separate, 7 % of the resident Pacific herring in samples from the White Sea were found to possess Atlantic herring mitochondria. The percentage was even higher (21 %) in the local Balsfjord stock of the Norwegian Sea, whereas it was nil in Pechora Sea samples. Similar or somewhat lower levels of genomic admixture were estimated from four diagnostic or nearly diagnostic nuclear allozyme loci. The absences of inter-locus and cytonuclear disequilibria, together with the patterns of mtDNA haplotype diversity, suggest recurrent backcrossing and hybridization over a long period in the post-glacial time frame. From a reassessment of published allozyme data, a hypothesis is presented that the patterns of intra-species geographical variation previously recorded in North European herrings may largely reflect varying levels of introgression. The study presents new information on the processes that affect the genetic structure of one of the most abundant fishes of the northern seas. It also adds to the knowledge on the occurrence of inter-species gene flow in marine fishes and on the consequences of trans-Arctic biotic invasions}},
author = {{Laakkonen, Hanna and Strelkov, Petr and Lajus, Dmitry L. and Väinölä, Risto}},
issn = {{1432-1793}},
keywords = {{Secondary Contact; Allozyme Locus; Gene Frequency Difference; Electronic Supplement Table; Allozyme Data}},
language = {{eng}},
pages = {{39--54}},
publisher = {{Springer}},
series = {{Marine Biology}},
title = {{Introgressive hybridization between the Atlantic and Pacific herrings (Clupea harengus and C. pallasii) in the north of Europe.}},
url = {{http://dx.doi.org/10.1007/s00227-014-2564-x}},
doi = {{10.1007/s00227-014-2564-x}},
volume = {{162}},
year = {{2015}},
}