Nuclear gene-inferred phylogenies resolve the relationships of the enigmatic Pygmy Sunfishes, Elassoma (Teleostei: Percomorpha)

Thomas Near, Michael Sandel, Kristen Kuhn, Peter Unmack, Peter Wainwright, Wm. Leo Smith

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Elassoma, the Pygmy Sunfishes, has long proven difficult to classify among the more than 15,000 species of percomorph fishes. Hypotheses dating to the 19th Century include Elassoma in Centrarchidae or in the monogeneric Elassomatidae, and more recent phylogenetic hypotheses have classified Elassoma in Smegmamorpha that also contained Synbranchiformes, Mugiliformes, Gasterosteiformes, and Atherinomorpha. No published phylogenetic analysis of morphological or molecular data has supported the monophyly of Smegmamorpha, or a consistent resolution of Elassoma relationships. In this study, we investigated the phylogenetic relationships of Elassoma and test the monophyly of Smegmamorpha with a nucleotide dataset comprising 10 protein-coding nuclear genes sampled from 65 percomorph species. Maximum likelihood analyses of each individual gene and the concatenated 10 genes all result in strong support for a clade composed of Elassoma and Centrarchidae, and no analysis supports monophyly of Smegmamorpha. Based on these results, a rank-free phylogenetic definition of Centrarchidae is presented that includes Elassoma, and the continued recognition of Smegmamorpha is discouraged. We discuss the implications of these phylogenetic analyses for relationships of several other percomorph lineages, including Kyphosidae, Terapontidae, Kuhliidae, Cheilodactylidae, Percichthyidae, Howellidae, Enoplosidae, Sinipercidae, and Cirrhitidae.
Original languageEnglish
Pages (from-to)388-395
Number of pages8
JournalMolecular Phylogenetics and Evolution
Volume63
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Smegmamorpha
Perciformes
Phylogeny
phylogeny
phylogenetics
Centrarchidae
gene
Genes
monophyly
genes
Mugiliformes
Gasterosteiformes
Synbranchiformes
Terapontidae
Kyphosidae
Percichthyidae
Nuclear Proteins
Elassoma
Fishes
Nucleotides

Cite this

Near, Thomas ; Sandel, Michael ; Kuhn, Kristen ; Unmack, Peter ; Wainwright, Peter ; Smith, Wm. Leo. / Nuclear gene-inferred phylogenies resolve the relationships of the enigmatic Pygmy Sunfishes, Elassoma (Teleostei: Percomorpha). In: Molecular Phylogenetics and Evolution. 2012 ; Vol. 63. pp. 388-395.
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abstract = "Elassoma, the Pygmy Sunfishes, has long proven difficult to classify among the more than 15,000 species of percomorph fishes. Hypotheses dating to the 19th Century include Elassoma in Centrarchidae or in the monogeneric Elassomatidae, and more recent phylogenetic hypotheses have classified Elassoma in Smegmamorpha that also contained Synbranchiformes, Mugiliformes, Gasterosteiformes, and Atherinomorpha. No published phylogenetic analysis of morphological or molecular data has supported the monophyly of Smegmamorpha, or a consistent resolution of Elassoma relationships. In this study, we investigated the phylogenetic relationships of Elassoma and test the monophyly of Smegmamorpha with a nucleotide dataset comprising 10 protein-coding nuclear genes sampled from 65 percomorph species. Maximum likelihood analyses of each individual gene and the concatenated 10 genes all result in strong support for a clade composed of Elassoma and Centrarchidae, and no analysis supports monophyly of Smegmamorpha. Based on these results, a rank-free phylogenetic definition of Centrarchidae is presented that includes Elassoma, and the continued recognition of Smegmamorpha is discouraged. We discuss the implications of these phylogenetic analyses for relationships of several other percomorph lineages, including Kyphosidae, Terapontidae, Kuhliidae, Cheilodactylidae, Percichthyidae, Howellidae, Enoplosidae, Sinipercidae, and Cirrhitidae.",
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Nuclear gene-inferred phylogenies resolve the relationships of the enigmatic Pygmy Sunfishes, Elassoma (Teleostei: Percomorpha). / Near, Thomas; Sandel, Michael; Kuhn, Kristen; Unmack, Peter; Wainwright, Peter; Smith, Wm. Leo.

In: Molecular Phylogenetics and Evolution, Vol. 63, 2012, p. 388-395.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nuclear gene-inferred phylogenies resolve the relationships of the enigmatic Pygmy Sunfishes, Elassoma (Teleostei: Percomorpha)

AU - Near, Thomas

AU - Sandel, Michael

AU - Kuhn, Kristen

AU - Unmack, Peter

AU - Wainwright, Peter

AU - Smith, Wm. Leo

PY - 2012

Y1 - 2012

N2 - Elassoma, the Pygmy Sunfishes, has long proven difficult to classify among the more than 15,000 species of percomorph fishes. Hypotheses dating to the 19th Century include Elassoma in Centrarchidae or in the monogeneric Elassomatidae, and more recent phylogenetic hypotheses have classified Elassoma in Smegmamorpha that also contained Synbranchiformes, Mugiliformes, Gasterosteiformes, and Atherinomorpha. No published phylogenetic analysis of morphological or molecular data has supported the monophyly of Smegmamorpha, or a consistent resolution of Elassoma relationships. In this study, we investigated the phylogenetic relationships of Elassoma and test the monophyly of Smegmamorpha with a nucleotide dataset comprising 10 protein-coding nuclear genes sampled from 65 percomorph species. Maximum likelihood analyses of each individual gene and the concatenated 10 genes all result in strong support for a clade composed of Elassoma and Centrarchidae, and no analysis supports monophyly of Smegmamorpha. Based on these results, a rank-free phylogenetic definition of Centrarchidae is presented that includes Elassoma, and the continued recognition of Smegmamorpha is discouraged. We discuss the implications of these phylogenetic analyses for relationships of several other percomorph lineages, including Kyphosidae, Terapontidae, Kuhliidae, Cheilodactylidae, Percichthyidae, Howellidae, Enoplosidae, Sinipercidae, and Cirrhitidae.

AB - Elassoma, the Pygmy Sunfishes, has long proven difficult to classify among the more than 15,000 species of percomorph fishes. Hypotheses dating to the 19th Century include Elassoma in Centrarchidae or in the monogeneric Elassomatidae, and more recent phylogenetic hypotheses have classified Elassoma in Smegmamorpha that also contained Synbranchiformes, Mugiliformes, Gasterosteiformes, and Atherinomorpha. No published phylogenetic analysis of morphological or molecular data has supported the monophyly of Smegmamorpha, or a consistent resolution of Elassoma relationships. In this study, we investigated the phylogenetic relationships of Elassoma and test the monophyly of Smegmamorpha with a nucleotide dataset comprising 10 protein-coding nuclear genes sampled from 65 percomorph species. Maximum likelihood analyses of each individual gene and the concatenated 10 genes all result in strong support for a clade composed of Elassoma and Centrarchidae, and no analysis supports monophyly of Smegmamorpha. Based on these results, a rank-free phylogenetic definition of Centrarchidae is presented that includes Elassoma, and the continued recognition of Smegmamorpha is discouraged. We discuss the implications of these phylogenetic analyses for relationships of several other percomorph lineages, including Kyphosidae, Terapontidae, Kuhliidae, Cheilodactylidae, Percichthyidae, Howellidae, Enoplosidae, Sinipercidae, and Cirrhitidae.

KW - Phylogeny

KW - Nuclear gene

KW - Actinopterygii

KW - Teleostei

KW - Elassoma

KW - Smegmamorpha

KW - Percomorpha.

U2 - 10.1016/j.ympev.2012.01.011

DO - 10.1016/j.ympev.2012.01.011

M3 - Article

VL - 63

SP - 388

EP - 395

JO - Molecular Phylogenetics and Evolution

JF - Molecular Phylogenetics and Evolution

SN - 1055-7903

ER -