Reassessment of morphological characteristics in freshwater eels (genus Anguilla, Anguillidae) shows congruence with molecular phylogeny estimates
Identifieur interne : 002A54 ( Istex/Curation ); précédent : 002A53; suivant : 002A55Reassessment of morphological characteristics in freshwater eels (genus Anguilla, Anguillidae) shows congruence with molecular phylogeny estimates
Auteurs : Yeong-Shin Lin [Taïwan] ; Chyng-Shyan Tzeng [Taïwan] ; Jenn-Kang Hwang [Taïwan]Source :
- Zoologica Scripta [ 0300-3256 ] ; 2005-05.
Descripteurs français
English descriptors
- KwdEn :
- Anguilla, Aoyama, Atlantic eels, Australis, Branch length, Cladistic methods, Dentition, Distance matrix, Dorsal, Eel, Evolution strategy, Evolutionary trees, External nodes, Feature space, Freshwater, Freshwater eels, Genus, Genus anguilla, Groove, Interioris, Internal nodes, Japonica, Malgumora, Mandibular bands, Maxillary, Minnet, Minnet tree, Molecular biology, Molecular data, Molecular phylogenetics, Molecular phylogeny, Morphological, Morphological characteristics, Morphological data, Morphometric, Morphometric data, Node, Norwegian, Norwegian academy, Numerical taxonomy, Otus, Phylogenetic, Phylogenetic relationships, Phylogenetic synopsis, Phylogenetic tree, Phylogenetic trees, Phylogeny, Preanal length, Scale bars, Scripta, Short dorsal, Systematic biology, Total length variation, Variegated, Variegated markings, Zoologica, Zoologica scripta.
- Teeft :
- Anguilla, Aoyama, Atlantic eels, Australis, Branch length, Cladistic methods, Dentition, Distance matrix, Dorsal, Eel, Evolution strategy, Evolutionary trees, External nodes, Feature space, Freshwater, Freshwater eels, Genus, Genus anguilla, Groove, Interioris, Internal nodes, Japonica, Malgumora, Mandibular bands, Maxillary, Minnet, Minnet tree, Molecular biology, Molecular data, Molecular phylogenetics, Molecular phylogeny, Morphological, Morphological characteristics, Morphological data, Morphometric, Morphometric data, Node, Norwegian, Norwegian academy, Numerical taxonomy, Otus, Phylogenetic, Phylogenetic relationships, Phylogenetic synopsis, Phylogenetic tree, Phylogenetic trees, Phylogeny, Preanal length, Scale bars, Scripta, Short dorsal, Systematic biology, Total length variation, Variegated, Variegated markings, Zoologica, Zoologica scripta.
Abstract
The morphology‐based phylogeny of freshwater eels, proposed by V. Ege in 1939, has been accepted as the basis of eel classification since that time. However, this has been called into question by recent molecular studies. Most of the morphological characteristics recognized by Ege are morphometric. Since methods for the application of morphometric data to phylogeny construction have not been fully established, it is unclear whether the observed discrepancies between morphological and molecular data arise from intrinsic differences or from flawed analyses. Here, we have used two methods to assemble evolutionary trees from distance matrices constructed according to Ege's data, the neighbor‐joining (NJ) method and the minimum network (MinNet) method; the latter is based on an evolutionary algorithm. After reanalysing Ege's morphological data, we found that both methods gave results consistent with those based on molecular data, although not with Ege's original classification. Therefore, we speculate that some morphological features Ege used to subdivide the eel groups may not be synapomorphic as he proposed, but symplesiomorphic or convergent . The method developed here may prove useful for constructing phylogeny for taxon groups where only continuous morphometric characteristics are recognized, such as the freshwater eels.
Url:
DOI: 10.1111/j.1463-6409.2005.00192.x
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Yeong-Shin Lin<affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: leucine.bt90g@nctu.edu.twjkhwang@faculty.nctu.edu.tw</mods:affiliation><country wicri:rule="url">Taïwan</country></affiliation><affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: leucine.bt90g@nctu.edu.twjkhwang@faculty.nctu.edu.tw</mods:affiliation><country wicri:rule="url">Taïwan</country></affiliation><affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: leucine.bt90g@nctu.edu.twjkhwang@faculty.nctu.edu.tw</mods:affiliation><country wicri:rule="url">Taïwan</country></affiliation>Le document en format XML
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last="Tzeng">Chyng-Shyan Tzeng</name><affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: leucine.bt90g@nctu.edu.twjkhwang@faculty.nctu.edu.tw</mods:affiliation><country wicri:rule="url">Taïwan</country></affiliation></author><author><name sortKey="Hwang, Jenn Ang" sort="Hwang, Jenn Ang" uniqKey="Hwang J" first="Jenn-Kang" last="Hwang">Jenn-Kang Hwang</name><affiliation><mods:affiliation></mods:affiliation><wicri:noCountry code="syntax">???</wicri:noCountry></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: leucine.bt90g@nctu.edu.twjkhwang@faculty.nctu.edu.tw</mods:affiliation><country wicri:rule="url">Taïwan</country></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Zoologica Scripta</title><title level="j" type="alt">ZOOLOGICA SCRIPTA</title><idno type="ISSN">0300-3256</idno><idno type="eISSN">1463-6409</idno><imprint><biblScope unit="vol">34</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="225">225</biblScope><biblScope unit="page" to="234">234</biblScope><biblScope unit="page-count">10</biblScope><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2005-05">2005-05</date></imprint><idno type="ISSN">0300-3256</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0300-3256</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anguilla</term><term>Aoyama</term><term>Atlantic eels</term><term>Australis</term><term>Branch length</term><term>Cladistic methods</term><term>Dentition</term><term>Distance matrix</term><term>Dorsal</term><term>Eel</term><term>Evolution strategy</term><term>Evolutionary trees</term><term>External nodes</term><term>Feature space</term><term>Freshwater</term><term>Freshwater eels</term><term>Genus</term><term>Genus anguilla</term><term>Groove</term><term>Interioris</term><term>Internal nodes</term><term>Japonica</term><term>Malgumora</term><term>Mandibular bands</term><term>Maxillary</term><term>Minnet</term><term>Minnet tree</term><term>Molecular biology</term><term>Molecular data</term><term>Molecular phylogenetics</term><term>Molecular phylogeny</term><term>Morphological</term><term>Morphological characteristics</term><term>Morphological data</term><term>Morphometric</term><term>Morphometric data</term><term>Node</term><term>Norwegian</term><term>Norwegian academy</term><term>Numerical taxonomy</term><term>Otus</term><term>Phylogenetic</term><term>Phylogenetic relationships</term><term>Phylogenetic synopsis</term><term>Phylogenetic tree</term><term>Phylogenetic trees</term><term>Phylogeny</term><term>Preanal length</term><term>Scale bars</term><term>Scripta</term><term>Short dorsal</term><term>Systematic biology</term><term>Total length variation</term><term>Variegated</term><term>Variegated markings</term><term>Zoologica</term><term>Zoologica scripta</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Anguilla</term><term>Aoyama</term><term>Atlantic eels</term><term>Australis</term><term>Branch length</term><term>Cladistic methods</term><term>Dentition</term><term>Distance matrix</term><term>Dorsal</term><term>Eel</term><term>Evolution strategy</term><term>Evolutionary trees</term><term>External nodes</term><term>Feature space</term><term>Freshwater</term><term>Freshwater eels</term><term>Genus</term><term>Genus anguilla</term><term>Groove</term><term>Interioris</term><term>Internal nodes</term><term>Japonica</term><term>Malgumora</term><term>Mandibular bands</term><term>Maxillary</term><term>Minnet</term><term>Minnet tree</term><term>Molecular biology</term><term>Molecular data</term><term>Molecular phylogenetics</term><term>Molecular phylogeny</term><term>Morphological</term><term>Morphological characteristics</term><term>Morphological data</term><term>Morphometric</term><term>Morphometric data</term><term>Node</term><term>Norwegian</term><term>Norwegian academy</term><term>Numerical taxonomy</term><term>Otus</term><term>Phylogenetic</term><term>Phylogenetic relationships</term><term>Phylogenetic synopsis</term><term>Phylogenetic tree</term><term>Phylogenetic trees</term><term>Phylogeny</term><term>Preanal length</term><term>Scale bars</term><term>Scripta</term><term>Short dorsal</term><term>Systematic biology</term><term>Total length variation</term><term>Variegated</term><term>Variegated markings</term><term>Zoologica</term><term>Zoologica scripta</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Anguilla</term><term>Eau douce</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The morphology‐based phylogeny of freshwater eels, proposed by V. Ege in 1939, has been accepted as the basis of eel classification since that time. However, this has been called into question by recent molecular studies. Most of the morphological characteristics recognized by Ege are morphometric. Since methods for the application of morphometric data to phylogeny construction have not been fully established, it is unclear whether the observed discrepancies between morphological and molecular data arise from intrinsic differences or from flawed analyses. Here, we have used two methods to assemble evolutionary trees from distance matrices constructed according to Ege's data, the neighbor‐joining (NJ) method and the minimum network (MinNet) method; the latter is based on an evolutionary algorithm. After reanalysing Ege's morphological data, we found that both methods gave results consistent with those based on molecular data, although not with Ege's original classification. Therefore, we speculate that some morphological features Ege used to subdivide the eel groups may not be synapomorphic as he proposed, but symplesiomorphic or convergent . The method developed here may prove useful for constructing phylogeny for taxon groups where only continuous morphometric characteristics are recognized, such as the freshwater eels.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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