Evidence map›Paper›PMID 41133823›Full record

ArticleGlobal change biology2025

Sex-Linked Differentiation in Commercially Exploited Fishes: Rethinking Population Structure in Dynamic Marine Environments.

Courtney E C Gardiner, Sophie von der Heyden, Conrad A Matthee, Einar E Nielsen, José M Pujolar, Rita Castilho, Regina L Cunha, Joana I Robalo, Deon Durholtz, Tracey P Fairweather and 2 more

Abstract read
In one paragraph

Article in Global change biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Courtney E C GardinerEvolutionary Genomics Group, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.
Sophie von der HeydenEvolutionary Genomics Group, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.
Conrad A MattheeEvolutionary Genomics Group, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.
Einar E NielsenNational Institute of Aquatic Resources, Technical University of Denmark, Silkeborg, Denmark.
José M PujolarCentre for Gelatinous Plankton Ecology and Evolution, Technical University of Denmark, Kongens Lyngby, Denmark.
Rita CastilhoUniversity of Algarve, Faro, Portugal.
Regina L CunhaUniversity of Algarve, Faro, Portugal.
Joana I RobaloMarine and Environmental Sciences Centre (MARE), Aquatic Research Network (ARNET), Instituto Universitário de Ciências Psicológicas (ISPA), Lisbon, Portugal.
Deon DurholtzDepartment of Forestry, Fisheries, and the Environment (DFFE), Cape Town, South Africa.
Tracey P FairweatherDepartment of Forestry, Fisheries, and the Environment (DFFE), Cape Town, South Africa.ORCID 0000-0002-4251-868X
Johannes N KathenaMinistry of Fisheries and Marine Resources (MFMR), Swakopmund, Namibia.
Romina HenriquesSchool for Climate Studies, Stellenbosch University, Stellenbosch, South Africa.

Funding

Fundação para a Ciência e a Tecnologia LA/P/0101/2020Fundação para a Ciência e a Tecnologia UIDB/04326/2020Fundação para a Ciência e a Tecnologia UIDP/04326/2020Fundação para a Ciência e Tecnologia LA/P/0069/20Fundação para a Ciência e Tecnologia MARE/UIDB/MAR/04292Fundação para a Ciência e Tecnologia MARE/UIDP/04292Innovation Fund Denmark 0156-00018B
6 · The paper itself

Abstract

Understanding how genomic structure links with ecological and evolutionary processes is critical for forecasting species responses to dynamic marine environments, especially in commercially exploited marine species, where fishing pressure can impact genomic integrity. Here we investigate Merluccius paradoxus, a commercially exploited demersal fish that appears to be undergoing a range expansion along the southern African coastline. Using whole-genome sequence data of individuals from across the species' distribution (n = 37), we reveal that sex-linked divergence, rather than geography, is the principal driver of genomic variation, challenging conventional assumptions of regional geographic population structure. Divergence was concentrated on autosomal regions (primarily large regions on Chromosomes 1 and 2), rather than known sex-determining (SD) regions (Chromosome 9), and did not have structural variants or extended linkage disequilibrium (LD). Instead, patterns were consistent with sex-specific directional selection acting on genes enriched for neuronal function, metabolism and muscle development, traits that are likely linked to behaviour, physiology and environmental tolerance. Males had reduced nucleotide diversity (π), low observed heterozygosity (H

Indexed as

GadiformesGenetic VariationSex DifferentiationAnimalsFemaleFisheriesGenomeMalefisheries managementlocal adaptationmarine genomicsMerluccius paradoxuspopulation genomicssoutheastern Atlanticwhole‐genome sequencing

Identifiers

PMID41133823
PMCPMC12551363

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.