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A Phylogeny of Freshwater Eels Inferred from Mitochondrial Genes

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A Phylogeny of Freshwater Eels Inferred from Mitochondrial Genes

Auteurs : Yeong-Shin Lin [République populaire de Chine] ; Yu-Ping Poh [République populaire de Chine] ; Chyng-Shyan Tzeng [République populaire de Chine]

Source :

Molecular Phylogenetics and Evolution [ 1055-7903 ] ; 2001.

RBID : ISTEX:9F628C44FC2B90658A191E8C8D5F825C7C2B6C69

Descripteurs français

Wicri :
- topic : Anguilla, Eau douce.

English descriptors

KwdEn :
- Academic press, Alternative trees, Anguilla, Anguilla anguilla, Anguilla rostrata, Anguilla species, Anguillidae, Anguilliformes, Aoyama, Ariosoma shiroanago, Atlantic eels, Atlantic ocean, Barron, Bengalensis, Bicolor, Biol, Bootstrap values, Central american isthmus, Clade, Complete cytochrome, Congridae, Cytochrome, Dentition, Divergence, Divergence time, Divergence time estimation, Dorsal, Eel, Evol, Evolutionary history, Freshwater, Freshwater eels, Genus, Genus anguilla, Ishikawa, Japonica, Leptocephalus, Malgumora, Marmorata, Mitochondrial, Molecular data, Mossambica, Nucleic acids, Phylogenetic, Phylogenetic relationships, Phylogenetic tree, Phylogeny, Primer, Reinhardti, Rhode island, Rostrata, Rrna, Rrna gene, Rrna genes, Rrna sequences, Sargasso, Sequencing, Southern hemisphere, Substitution, Templeton, Templeton tests, Tethys, Tethys seaway, Topology, Transversional substitutions, Tree topology, Tsukamoto, Tzeng, Variegated, Variegated markings, Variegated species.
Teeft :
- Academic press, Alternative trees, Anguilla, Anguilla anguilla, Anguilla rostrata, Anguilla species, Anguillidae, Anguilliformes, Aoyama, Ariosoma shiroanago, Atlantic eels, Atlantic ocean, Barron, Bengalensis, Bicolor, Biol, Bootstrap values, Central american isthmus, Clade, Complete cytochrome, Congridae, Cytochrome, Dentition, Divergence, Divergence time, Divergence time estimation, Dorsal, Eel, Evol, Evolutionary history, Freshwater, Freshwater eels, Genus, Genus anguilla, Ishikawa, Japonica, Leptocephalus, Malgumora, Marmorata, Mitochondrial, Molecular data, Mossambica, Nucleic acids, Phylogenetic, Phylogenetic relationships, Phylogenetic tree, Phylogeny, Primer, Reinhardti, Rhode island, Rostrata, Rrna, Rrna gene, Rrna genes, Rrna sequences, Sargasso, Sequencing, Southern hemisphere, Substitution, Templeton, Templeton tests, Tethys, Tethys seaway, Topology, Transversional substitutions, Tree topology, Tsukamoto, Tzeng, Variegated, Variegated markings, Variegated species.

Abstract

Abstract: The genus Anguilla Shaw of Family Anguillidae consists entirely of freshwater eels, including 15 species and 2 subspecies. Conventionally, variegated markings and the length of the dorsal fin are the major morphological features used for reconstruction of phylogenetic relationships. The evolutionary history of these species remains unclear, especially for the Atlantic eels, whose habitats are far from the Metropolis in the Indo-Pacific region. This study reexamined the phylogenetic relationships of 12 Anguilla species by sequencing of the cytochrome b and 12S rRNA genes. In our analysis, species bearing similar coloration patterns or dorsal fin morphology are not necessarily clustered in the same clade, indicating that these morphological features might be unstable or might have occurred independently in different lineages during evolution. Combining our molecular data and geographical evidence, we speculate that (1) Anguilla first radiated about 20 million years ago, (2) the ancestors of Atlantic eels did not migrate by drifting through the Tethys Seaway at the leptocephali stage but instead trekked across the Central American Isthmus to the Sargasso Sea for spawning at the adult stage, and (3) multiple radiation events had occurred at the Metropolis during Anguilla evolution.

Url:

https://api.istex.fr/document/9F628C44FC2B90658A191E8C8D5F825C7C2B6C69/fulltext/pdf

DOI: 10.1006/mpev.2001.0969

Affiliations:

République populaire de Chine

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Abstract: The genus Anguilla Shaw of Family Anguillidae consists entirely of freshwater eels, including 15 species and 2 subspecies. Conventionally, variegated markings and the length of the dorsal fin are the major morphological features used for reconstruction of phylogenetic relationships. The evolutionary history of these species remains unclear, especially for the Atlantic eels, whose habitats are far from the Metropolis in the Indo-Pacific region. This study reexamined the phylogenetic relationships of 12 Anguilla species by sequencing of the cytochrome b and 12S rRNA genes. In our analysis, species bearing similar coloration patterns or dorsal fin morphology are not necessarily clustered in the same clade, indicating that these morphological features might be unstable or might have occurred independently in different lineages during evolution. Combining our molecular data and geographical evidence, we speculate that (1) Anguilla first radiated about 20 million years ago, (2) the ancestors of Atlantic eels did not migrate by drifting through the Tethys Seaway at the leptocephali stage but instead trekked across the Central American Isthmus to the Sargasso Sea for spawning at the adult stage, and (3) multiple radiation events had occurred at the Metropolis during Anguilla evolution.</div>
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A Phylogeny of Freshwater Eels Inferred from Mitochondrial Genes

A Phylogeny of Freshwater Eels Inferred from Mitochondrial Genes

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri