ArticleBMC genetics2018
Analysis of coastal cod (Gadus morhua L.) sampled on spawning sites reveals a genetic gradient throughout Norway's coastline.
Article in BMC genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 39 citations in OpenAlex.
- Coexisting Atlantic Cod Ecotypes in the Barents Sea: An Issue for Managing Fisheries.Evolutionary applications · 2026Article
- Genetics in the Ocean's Twilight Zone: Population Structure of the Silvery Lightfish Across Its Distribution Range.Evolutionary applications · 2026Article
- Spatio-temporal analysis of genetic diversity in the sibling species Contracaecum osculatum sp. B: a tool for monitoring trophic-web dynamics in Arctic Sea waters.Parasitology research · 2025Article
- Haemoglobin revisited: delineating population structure with the world's first molecular genetic marker used in fisheries research.Royal Society open science · 2025Article
- Article
- Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Evolutionary applications · 2022Article
- Genome-wide analysis reveals the genetic stock structure of hoki (Evolutionary applications · 2021Article
- Genomic analysis reveals neutral and adaptive patterns that challenge the current management regime for East Atlantic codEvolutionary applications · 2020Article
- Genome wide analysis reveals genetic divergence between Goldsinny wrasse populations.BMC genetics · 2020Article
- The pantophysin gene and its relationship with survival in early life stages of Atlantic cod.Royal Society open science · 2020Article
- Genetic analysis redraws the management boundaries for the European sprat.Evolutionary applications · 2020Article
- SNP genotyping reveals substructuring in weakly differentiated populations of Atlantic cod (Gadus morhua) from diverse environments in the Baltic Sea.Scientific reports · 2020Article
- Weak genetic structure despite strong genomic signal in lesser sandeel in the North Sea.Evolutionary applications · 2020Article
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Authors and funding
8 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAtlantic cod (Gadus morhua L.) has formed the basis of many economically significant fisheries in the North Atlantic, and is one of the best studied marine fishes, but a legacy of overexploitation has depleted populations and collapsed fisheries in several regions. Previous studies have identified considerable population genetic structure for Atlantic cod. However, within Norway, which is the country with the largest remaining catch in the Atlantic, the population genetic structure of coastal cod (NCC) along the entire coastline has not yet been investigated. We sampled > 4000 cod from 55 spawning sites. All fish were genotyped with 6 microsatellite markers and Pan I (Dataset 1). A sub-set of the samples (1295 fish from 17 locations) were also genotyped with an additional 9 microsatellites (Dataset 2). Otoliths were read in order to exclude North East Arctic Cod (NEAC) from the analyses, as and where appropriate.
resultsWe found no difference in genetic diversity, measured as number of alleles, allelic richness, heterozygosity nor effective population sizes, in the north-south gradient. In both data sets, weak but significant population genetic structure was revealed (Dataset 1: global F
conclusionWe conclude that Norwegian coastal cod displays significant population genetic structure throughout its entire range, that follows a trend of isolation by distance. Furthermore, we suggest that a gradient of genetic introgression between NEAC and NCC contributes to the observed population genetic structure. The current management regime for coastal cod in Norway, dividing it into two stocks at 62°N, represents a simplification of the level of genetic connectivity among coastal cod in Norway, and needs revision.
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