Salmoniformes: A Marine or Freshwater Origin?

The long-lasting discussion about the marine or freshwater genesis of Salmoniformes is still unsettled. No convincing evidence of either point of view has been found so far. The arguments for the freshwater origin of salmoniforms are analyzed using the “probabilistic” method of phylogenetic reconstr...

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Bibliographic Details
Published in:Russian journal of marine biology 2022-12, Vol.48 (7), p.541-546
Main Author: Dolganov, V. N.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cretaceous
Eocene
Fresh water
Freshwater
Freshwater & Marine Ecology
Genetic analysis
Inland water environment
Life Sciences
Original Papers
Palaeocene
Paleocene
Phylogenetics
Phylogeny
Salmoniformes
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Summary:The long-lasting discussion about the marine or freshwater genesis of Salmoniformes is still unsettled. No convincing evidence of either point of view has been found so far. The arguments for the freshwater origin of salmoniforms are analyzed using the “probabilistic” method of phylogenetic reconstruction and genetic approach. The analysis shows that the arguments set forth cannot be considered as evidence for the freshwater genesis of this taxon. The lack of actual facts and theoretical bases of the ancient freshwater residence of Salmoniformes makes it difficult to prove that they acquired a freshwater lifestyle in the Cretaceous–Paleocene just to become anadromous again in the Eocene.
ISSN:1063-0740
1608-3377
DOI:10.1134/S1063074022070033