Different roles of the Amazon-Orinoco barrier on the genetic structure of two sardine genera from the Western Atlantic Ocean

Three sardine species of Harengula and one of Opisthonema (Clupeiformes, Clupeidae) are known in the Western Atlantic, where the Amazon-Orinoco plume has been recognized as a major biogeographic barrier, albeit permeable to larger and generalist species. Here we used mitochondrial cox1 gene DNA sequ...

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Bibliographic Details
Published in:Hydrobiologia 2024-06, Vol.851 (10), p.2429-2445
Main Authors: Ferreira-Araújo, Thais, Hollanda-Carvalho, Pedro, Di Dario, Fabio, Mendes, Liana de Figueiredo, Oliveira, Claudio, Gasparini, João Luiz, Rotundo, Matheus Marcos, Macieira, Raphael M., Lima, Sergio Maia Queiroz
Format: Article
Language:English
Subjects:
Artisanal fisheries
Biogeography
Biomedical and Life Sciences
DNA sequences
Ecology
Fisheries
Fisheries management
Fishery management
Freshwater
Freshwater & Marine Ecology
Gene sequencing
Genetic structure
Harengula
Inland water environment
Life Sciences
Marine ecosystems
Marine fishes
Marine resources
Mitochondrial DNA
Nucleotide sequence
Opisthonema
Population structure
Primary Research Paper
Sardines
Speciation
Strategic management
Zoology
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Summary:Three sardine species of Harengula and one of Opisthonema (Clupeiformes, Clupeidae) are known in the Western Atlantic, where the Amazon-Orinoco plume has been recognized as a major biogeographic barrier, albeit permeable to larger and generalist species. Here we used mitochondrial cox1 gene DNA sequences to check the lineage delimitation of both genera, testing the influence of the Amazon-Orinoco barrier (AOB) and marine provinces on their phylogeographic structure. Results indicate that the two genera are differently affected by the AOB, including cryptic speciation in Harengula and population structure in Opisthonema . Harengula show a broad distribution in the Brazilian Province (BRA) distinct from H. clupeola and H. jaguana from the Greater Caribbean Region (GCR). Divergence time between Harengula from the GCR vs . BRA was estimated as about 2.4 Mya, which coincides with the period of increasing sediment and freshwater discharge of the Amazon River in the Atlantic. Results also indicate the existence of a single species of Opisthonema , albeit with population structuring related to the marine provinces. Since species of both genera are relevant to artisanal fisheries and the maintenance of oceanic ecosystems, these results may help in fisheries management of these important marine resources.
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-023-05468-0