Molecules, morphology, missing data and the phylogenetic position of a recently extinct madtom catfish (Actinopterygii: Ictaluridae)

Jacob J.D. Egge, Andrew M Simons

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Taxa missing large amounts of data pose challenges that may hinder the recovery of a well-resolved, accurate phylogeny and leave questions surrounding their phylogenetic position. Systematists commonly have to contend with one or two species in a group for which there is little or no material available suitable for recovering molecular data. It is unclear whether these taxa can be better placed using analyses based on morphological data only, or should be included in broader analyses based on both morphological and molecular data. The extinct madtom catfish Noturus trautmani is known from few specimens for which molecular data are unavailable. We included this taxon in parsimony and Bayesian analyses of relationships of madtom catfishes based on a combination of morphological and molecular data. Results indicate that using a combination of morphological and molecular data does a better job at providing a phylogenetic placement for N. trautmani than morphology alone, even though it is missing all of its molecular characters. We provide a novel hypothesis of relationships among Noturus species and recommendations for classification within the group.

Original languageEnglish (US)
Pages (from-to)60-75
Number of pages16
JournalZoological Journal of the Linnean Society
Volume155
Issue number1
DOIs
StatePublished - Jan 1 2009

Fingerprint

Ictaluridae
Actinopterygii
catfish
phylogenetics
phylogeny
Noturus

Keywords

  • Combined Bayesian analysis
  • Noturus
  • Systematics

Cite this

@article{7503f1299bba42f18890b293cb2f1eb7,
title = "Molecules, morphology, missing data and the phylogenetic position of a recently extinct madtom catfish (Actinopterygii: Ictaluridae)",
abstract = "Taxa missing large amounts of data pose challenges that may hinder the recovery of a well-resolved, accurate phylogeny and leave questions surrounding their phylogenetic position. Systematists commonly have to contend with one or two species in a group for which there is little or no material available suitable for recovering molecular data. It is unclear whether these taxa can be better placed using analyses based on morphological data only, or should be included in broader analyses based on both morphological and molecular data. The extinct madtom catfish Noturus trautmani is known from few specimens for which molecular data are unavailable. We included this taxon in parsimony and Bayesian analyses of relationships of madtom catfishes based on a combination of morphological and molecular data. Results indicate that using a combination of morphological and molecular data does a better job at providing a phylogenetic placement for N. trautmani than morphology alone, even though it is missing all of its molecular characters. We provide a novel hypothesis of relationships among Noturus species and recommendations for classification within the group.",
keywords = "Combined Bayesian analysis, Noturus, Systematics",
author = "Egge, {Jacob J.D.} and Simons, {Andrew M}",
year = "2009",
month = "1",
day = "1",
doi = "10.1111/j.1096-3642.2008.00432.x",
language = "English (US)",
volume = "155",
pages = "60--75",
journal = "Zoological Journal of the Linnean Society",
issn = "0024-4082",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Molecules, morphology, missing data and the phylogenetic position of a recently extinct madtom catfish (Actinopterygii

T2 - Ictaluridae)

AU - Egge, Jacob J.D.

AU - Simons, Andrew M

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Taxa missing large amounts of data pose challenges that may hinder the recovery of a well-resolved, accurate phylogeny and leave questions surrounding their phylogenetic position. Systematists commonly have to contend with one or two species in a group for which there is little or no material available suitable for recovering molecular data. It is unclear whether these taxa can be better placed using analyses based on morphological data only, or should be included in broader analyses based on both morphological and molecular data. The extinct madtom catfish Noturus trautmani is known from few specimens for which molecular data are unavailable. We included this taxon in parsimony and Bayesian analyses of relationships of madtom catfishes based on a combination of morphological and molecular data. Results indicate that using a combination of morphological and molecular data does a better job at providing a phylogenetic placement for N. trautmani than morphology alone, even though it is missing all of its molecular characters. We provide a novel hypothesis of relationships among Noturus species and recommendations for classification within the group.

AB - Taxa missing large amounts of data pose challenges that may hinder the recovery of a well-resolved, accurate phylogeny and leave questions surrounding their phylogenetic position. Systematists commonly have to contend with one or two species in a group for which there is little or no material available suitable for recovering molecular data. It is unclear whether these taxa can be better placed using analyses based on morphological data only, or should be included in broader analyses based on both morphological and molecular data. The extinct madtom catfish Noturus trautmani is known from few specimens for which molecular data are unavailable. We included this taxon in parsimony and Bayesian analyses of relationships of madtom catfishes based on a combination of morphological and molecular data. Results indicate that using a combination of morphological and molecular data does a better job at providing a phylogenetic placement for N. trautmani than morphology alone, even though it is missing all of its molecular characters. We provide a novel hypothesis of relationships among Noturus species and recommendations for classification within the group.

KW - Combined Bayesian analysis

KW - Noturus

KW - Systematics

UR - http://www.scopus.com/inward/record.url?scp=58149352820&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149352820&partnerID=8YFLogxK

U2 - 10.1111/j.1096-3642.2008.00432.x

DO - 10.1111/j.1096-3642.2008.00432.x

M3 - Article

AN - SCOPUS:58149352820

VL - 155

SP - 60

EP - 75

JO - Zoological Journal of the Linnean Society

JF - Zoological Journal of the Linnean Society

SN - 0024-4082

IS - 1

ER -