Inference of phylogenetic relationships within Fabriciidae (Sabellida, Annelida) using molecular and morphological data
Identifieur interne : 000719 ( Istex/Corpus ); précédent : 000718; suivant : 000720Inference of phylogenetic relationships within Fabriciidae (Sabellida, Annelida) using molecular and morphological data
Auteurs : Danwei Huang ; Kirk Fitzhugh ; Greg W. RouseSource :
- Cladistics [ 0748-3007 ] ; 2011-08.
Abstract
Cladistic relationships among fabriciids have to date been explored in the context of adult morphology, but resolution has been declining as more species are described. In this study, we incorporated data on the reproductive system, including features related to the male sperm and sperm storage by females, to supplement existing data on adult morphology (for a total of 50 characters). Three nuclear DNA markers (18S rDNA approximately 1800 bp, the D1 region of 28S rDNA approximately 320 bp, and histone H3 approximately 330 bp) were sequenced from 21 species of fabriciids. We assessed the phylogeny of Fabriciidae based on an integrative analysis of these morphological and molecular characters. Our results show that, in addition to three previously recovered apomorphies for Fabriciidae (absence of ventral lips, modification of abdominal uncini to an elongate manubrium, and presence of branchial hearts), six more apomorphies associated with the reproductive system can be used to support this clade—spermiogenesis only in the thorax, spermiogenesis in large clusters with a central cytophore, single dorsal sperm duct, sperm nuclear projection, thickening of the sperm nuclear membrane and the sperm extra‐axonemal sheath. The results require the erection of two new genera and two new species, which are described. © The Willi Hennig Society 2010.
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DOI: 10.1111/j.1096-0031.2010.00343.x
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<front><div type="abstract" xml:lang="en">Cladistic relationships among fabriciids have to date been explored in the context of adult morphology, but resolution has been declining as more species are described. In this study, we incorporated data on the reproductive system, including features related to the male sperm and sperm storage by females, to supplement existing data on adult morphology (for a total of 50 characters). Three nuclear DNA markers (18S rDNA approximately 1800 bp, the D1 region of 28S rDNA approximately 320 bp, and histone H3 approximately 330 bp) were sequenced from 21 species of fabriciids. We assessed the phylogeny of Fabriciidae based on an integrative analysis of these morphological and molecular characters. Our results show that, in addition to three previously recovered apomorphies for Fabriciidae (absence of ventral lips, modification of abdominal uncini to an elongate manubrium, and presence of branchial hearts), six more apomorphies associated with the reproductive system can be used to support this clade—spermiogenesis only in the thorax, spermiogenesis in large clusters with a central cytophore, single dorsal sperm duct, sperm nuclear projection, thickening of the sperm nuclear membrane and the sperm extra‐axonemal sheath. The results require the erection of two new genera and two new species, which are described. © The Willi Hennig Society 2010.</div>
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<supportingInformation><p><b>Fig. S1.</b>
Most parsimonious trees obtained from pruned molecular datasets under default and reduced stringencies of Gblocks 0.91b. Numbers above each branch denote support values: maximum parsimony jackknife ≥ 50 followed by maximum likelihood bootstrap ≥50 and Bayesian posterior probability ≥ 0.9. #, jackknife/bootstrap values of 100 and posterior probability of 1.</p>
<p><b>Fig. S2.</b>
Strict consensus tree from analysis of combined molecular and morphology data showing partitioned Bremer support values for each partition (18S/28S D1/histone H3/morphology).</p>
<p><b>Fig. S3.</b>
Strict consensus tree of 100 000 most parsimonious topologies (tree length = 5789) from analysis of combined molecular and morphology data using full complement of taxa examined in this study. Number above each branch represents maximum parsimony jackknife ≥ 50; value below indicates Bayesian posterior probability ≥ 0.9.</p>
<p><b>Fig. S4.</b>
Results of energy‐dispersive spectroscopy carried out on three tissue types in <i>Echinofabricia alata</i>
new comb. (voucher SIO A1802). The spicules characteristic of <i>Echinofabricia</i>
show enhanced signatures of phosphorus and calcium relative to a chaeta and epidermis.</p>
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<abstract lang="en">Cladistic relationships among fabriciids have to date been explored in the context of adult morphology, but resolution has been declining as more species are described. In this study, we incorporated data on the reproductive system, including features related to the male sperm and sperm storage by females, to supplement existing data on adult morphology (for a total of 50 characters). Three nuclear DNA markers (18S rDNA approximately 1800 bp, the D1 region of 28S rDNA approximately 320 bp, and histone H3 approximately 330 bp) were sequenced from 21 species of fabriciids. We assessed the phylogeny of Fabriciidae based on an integrative analysis of these morphological and molecular characters. Our results show that, in addition to three previously recovered apomorphies for Fabriciidae (absence of ventral lips, modification of abdominal uncini to an elongate manubrium, and presence of branchial hearts), six more apomorphies associated with the reproductive system can be used to support this clade—spermiogenesis only in the thorax, spermiogenesis in large clusters with a central cytophore, single dorsal sperm duct, sperm nuclear projection, thickening of the sperm nuclear membrane and the sperm extra‐axonemal sheath. The results require the erection of two new genera and two new species, which are described. © The Willi Hennig Society 2010.</abstract>
<relatedItem type="host"><titleInfo><title>Cladistics</title>
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<note type="content"> Fig. S1. Most parsimonious trees obtained from pruned molecular datasets under default and reduced stringencies of Gblocks 0.91b. Numbers above each branch denote support values: maximum parsimony jackknife ≥ 50 followed by maximum likelihood bootstrap ≥50 and Bayesian posterior probability ≥ 0.9. #, jackknife/bootstrap values of 100 and posterior probability of 1. Fig. S2. Strict consensus tree from analysis of combined molecular and morphology data showing partitioned Bremer support values for each partition (18S/28S D1/histone H3/morphology). Fig. S3. Strict consensus tree of 100 000 most parsimonious topologies (tree length = 5789) from analysis of combined molecular and morphology data using full complement of taxa examined in this study. Number above each branch represents maximum parsimony jackknife ≥ 50; value below indicates Bayesian posterior probability ≥ 0.9. Fig. S4. Results of energy‐dispersive spectroscopy carried out on three tissue types in Echinofabricia alata new comb. (voucher SIO A1802). The spicules characteristic of Echinofabricia show enhanced signatures of phosphorus and calcium relative to a chaeta and epidermis. Fig. S1. Most parsimonious trees obtained from pruned molecular datasets under default and reduced stringencies of Gblocks 0.91b. Numbers above each branch denote support values: maximum parsimony jackknife ≥ 50 followed by maximum likelihood bootstrap ≥50 and Bayesian posterior probability ≥ 0.9. #, jackknife/bootstrap values of 100 and posterior probability of 1. Fig. S2. Strict consensus tree from analysis of combined molecular and morphology data showing partitioned Bremer support values for each partition (18S/28S D1/histone H3/morphology). Fig. S3. Strict consensus tree of 100 000 most parsimonious topologies (tree length = 5789) from analysis of combined molecular and morphology data using full complement of taxa examined in this study. Number above each branch represents maximum parsimony jackknife ≥ 50; value below indicates Bayesian posterior probability ≥ 0.9. Fig. S4. Results of energy‐dispersive spectroscopy carried out on three tissue types in Echinofabricia alata new comb. (voucher SIO A1802). The spicules characteristic of Echinofabricia show enhanced signatures of phosphorus and calcium relative to a chaeta and epidermis. Fig. S1. Most parsimonious trees obtained from pruned molecular datasets under default and reduced stringencies of Gblocks 0.91b. Numbers above each branch denote support values: maximum parsimony jackknife ≥ 50 followed by maximum likelihood bootstrap ≥50 and Bayesian posterior probability ≥ 0.9. #, jackknife/bootstrap values of 100 and posterior probability of 1. Fig. S2. Strict consensus tree from analysis of combined molecular and morphology data showing partitioned Bremer support values for each partition (18S/28S D1/histone H3/morphology). Fig. S3. Strict consensus tree of 100 000 most parsimonious topologies (tree length = 5789) from analysis of combined molecular and morphology data using full complement of taxa examined in this study. Number above each branch represents maximum parsimony jackknife ≥ 50; value below indicates Bayesian posterior probability ≥ 0.9. Fig. S4. Results of energy‐dispersive spectroscopy carried out on three tissue types in Echinofabricia alata new comb. (voucher SIO A1802). The spicules characteristic of Echinofabricia show enhanced signatures of phosphorus and calcium relative to a chaeta and epidermis. Fig. S1. Most parsimonious trees obtained from pruned molecular datasets under default and reduced stringencies of Gblocks 0.91b. Numbers above each branch denote support values: maximum parsimony jackknife ≥ 50 followed by maximum likelihood bootstrap ≥50 and Bayesian posterior probability ≥ 0.9. #, jackknife/bootstrap values of 100 and posterior probability of 1. Fig. S2. Strict consensus tree from analysis of combined molecular and morphology data showing partitioned Bremer support values for each partition (18S/28S D1/histone H3/morphology). Fig. S3. Strict consensus tree of 100 000 most parsimonious topologies (tree length = 5789) from analysis of combined molecular and morphology data using full complement of taxa examined in this study. Number above each branch represents maximum parsimony jackknife ≥ 50; value below indicates Bayesian posterior probability ≥ 0.9. Fig. S4. Results of energy‐dispersive spectroscopy carried out on three tissue types in Echinofabricia alata new comb. (voucher SIO A1802). The spicules characteristic of Echinofabricia show enhanced signatures of phosphorus and calcium relative to a chaeta and epidermis.Supporting Info Item: Supporting info item - </note>
<identifier type="ISSN">0748-3007</identifier>
<identifier type="eISSN">1096-0031</identifier>
<identifier type="DOI">10.1111/(ISSN)1096-0031</identifier>
<identifier type="PublisherID">CLA</identifier>
<part><date>2011</date>
<detail type="volume"><caption>vol.</caption>
<number>27</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>4</number>
</detail>
<extent unit="pages"><start>356</start>
<end>379</end>
<total>24</total>
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<identifier type="DOI">10.1111/j.1096-0031.2010.00343.x</identifier>
<identifier type="ArticleID">CLA343</identifier>
<accessCondition type="use and reproduction" contentType="copyright">© The Willi Hennig Society 2010</accessCondition>
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