Evidence map›Paper›PMID 33574384›Full record

ArticleScientific reports2021

Shallow seamounts represent speciation islands for circumglobal yellowtail Seriola lalandi.

Sven Kerwath, Rouvay Roodt-Wilding, Toufiek Samaai, Henning Winker, Wendy West, Sheroma Surajnarayan, Belinda Swart, Aletta Bester-van der Merwe, Albrecht Götz, Stephen Lamberth and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Population Genetics ofEcology and evolution · 2026
    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

11 authors.

Sven KerwathFisheries Management, Department of Environment, Forestry and Fisheries, Private Bag X2, Vlaeberg, 8018, South Africa. SvenK@daff.gov.za.
Rouvay Roodt-WildingMolecular Breeding and Biodiversity Group, Department of Genetics, Stellenbosch University, Private Bag X1, Stellenbosch, South Africa.
Toufiek SamaaiDepartment of Biological Sciences, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa.
Henning WinkerFisheries Management, Department of Environment, Forestry and Fisheries, Private Bag X2, Vlaeberg, 8018, South Africa.
Wendy WestFisheries Management, Department of Environment, Forestry and Fisheries, Private Bag X2, Vlaeberg, 8018, South Africa.
Sheroma SurajnarayanDepartment of Environmental Sciences, University of South Africa, PO Box 392, Unisa, 003, South Africa.
Belinda SwartMolecular Breeding and Biodiversity Group, Department of Genetics, Stellenbosch University, Private Bag X1, Stellenbosch, South Africa.
Aletta Bester-van der MerweMolecular Breeding and Biodiversity Group, Department of Genetics, Stellenbosch University, Private Bag X1, Stellenbosch, South Africa.
Albrecht GötzElwandle Node, South African Environmental Observation Network (SAEON), PO Box 77000, Port Elizabeth, 6031, South Africa.
Stephen LamberthFisheries Management, Department of Environment, Forestry and Fisheries, Private Bag X2, Vlaeberg, 8018, South Africa.
Christopher WilkeFisheries Management, Department of Environment, Forestry and Fisheries, Private Bag X2, Vlaeberg, 8018, South Africa.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phenotypic plasticity in life-history traits in response to heterogeneous environments has been observed in a number of fishes. Conversely, genetic structure has recently been detected in even the most wide ranging pelagic teleost fish and shark species with massive dispersal potential, putting into question previous expectations of panmixia. Shallow oceanic seamounts are known aggregation sites for pelagic species, but their role in genetic structuring of widely distributed species remains poorly understood. The yellowtail kingfish (Seriola lalandi), a commercially valuable, circumglobal, epipelagic fish species occurs in two genetically distinct Southern Hemisphere populations (South Pacific and southern Africa) with low levels of gene-flow between the regions. Two shallow oceanic seamounts exist in the ocean basins around southern Africa; Vema and Walters Shoal in the Atlantic and Indian oceans, respectively. We analysed rare samples from these remote locations and from the South African continental shelf to assess genetic structure and population connectivity in S. lalandi and investigated life-history traits by comparing diet, age, growth and maturation among the three sites. The results suggest that yellowtail from South Africa and the two seamounts are genetically and phenotypically distinct. Rather than mere feeding oases, we postulate that these seamounts represent islands of breeding populations with site-specific adaptations.

Identifiers

PMID33574384
PMCPMC7878507

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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.