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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.641.10346" ID-PMC="PMC5240348" ID-Pensoft-Pub="1313-2970-641-1" ID-Pensoft-UUID="BB707A65FFDFFFFBFFFE8B61FFD5FF91" ID-PubMed="28138291" ID-Zenodo-Dep="579464" ID-ZooBank="903D6413C8024864A662D71C50740E2D" ModsDocID="1313-2970-641-1" checkinTime="1481788285262" checkinUser="pensoft" docAuthor="Low, Martyn E. Y., Sinniger, Frederic &amp; Reimer, James Davis" docDate="2016" docId="89C1FF4D490021D7A0D92719A98A3134" docLanguage="en" docName="ZooKeys 641: 1-80" docOrigin="ZooKeys 641" docPubDate="2016-12-14" docSource="http://dx.doi.org/10.3897/zookeys.641.10346" docTitle="Isozoanthus Carlgren, in Chun 1903" docType="treatment" docVersion="7" id="BB707A65FFDFFFFBFFFE8B61FFD5FF91" lastPageNumber="16" masterDocId="BB707A65FFDFFFFBFFFE8B61FFD5FF91" masterDocTitle="The order Zoantharia Rafinesque, 1815 (Cnidaria, Anthozoa: Hexacorallia): supraspecific classification and nomenclature" masterLastPageNumber="80" masterPageNumber="1" pageNumber="15" updateTime="1668163821031" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>The order Zoantharia Rafinesque, 1815 (Cnidaria, Anthozoa: Hexacorallia): supraspecific classification and nomenclature</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Low, Martyn E. Y.</mods:namePart>
<mods:affiliation>Lee Kong Chian Museum of Natural History, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore &amp; former address: Department of Marine and Environmental Sciences, Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903 - 0213, Japan</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sinniger, Frederic</mods:namePart>
<mods:affiliation>Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa 905 - 0227, Japan</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Reimer, James Davis</mods:namePart>
<mods:affiliation>Molecular Invertebrate Systematics and Ecology (MISE) Laboratory, Department of Marine and Environmental Sciences, Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903 - 0213, Japan; and Tropical Biosphere Research Center, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903 - 0213, Japan</mods:affiliation>
<mods:nameIdentifier type="email">jreimer@sci.u-ryukyu.ac.jp</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>ZooKeys</mods:title>
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<mods:date>2016</mods:date>
<mods:detail type="pubDate">
<mods:number>2016-12-14</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>641</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>80</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.641.10346</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.641.10346</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-641-1</mods:identifier>
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<treatment ID-GBIF-Taxon="127892772" LSID="urn:lsid:plazi:treatment:89C1FF4D490021D7A0D92719A98A3134" httpUri="http://treatment.plazi.org/id/89C1FF4D490021D7A0D92719A98A3134" lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15">
<subSubSection pageId="14" pageNumber="15" type="nomenclature">
<paragraph pageId="14" pageNumber="15">
<taxonomicName LSID="89C1FF4D-4900-21D7-A0D9-2719A98A3134" authority="Carlgren, in Chun, 1903" authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="genus">Isozoanthus Carlgren, in Chun, 1903</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="15" type="reference_group">
<paragraph pageId="14" pageNumber="15">
<taxonomicName authority="" class="Anthozoa" family="Parazoanthidae" genus="Polythoa" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Polythoa (Taeniothoa)" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="subGenus" subGenus="Taeniothoa">Polythoa (Taeniothoa)</taxonomicName>
Andres, 1883a: 521, 532 [
<emphasis italics="true" pageId="14" pageNumber="15">nomen oblitum</emphasis>
].
</paragraph>
<paragraph pageId="14" pageNumber="15">
<taxonomicName authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="genus">Isozoanthus</taxonomicName>
Carlgren, in Chun, 1903: 520 [
<emphasis italics="true" pageId="14" pageNumber="15">nomen protectum</emphasis>
].
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="15" type="type species">
<paragraph pageId="14" pageNumber="15">Type species.</paragraph>
<paragraph pageId="14" pageNumber="15">
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="14" pageNumber="15">Isozoanthus giganteus</emphasis>
</taxonomicName>
Carlgren, in Chun, 1903, by monotypy (Articles 68.3, 68.3.1, ICZN, 1999: 71).
</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="15" type="gender">
<paragraph pageId="14" pageNumber="15">Gender.</paragraph>
<paragraph pageId="14" pageNumber="15">Masculine.</paragraph>
</subSubSection>
<subSubSection pageId="14" pageNumber="15" type="diagnosis">
<paragraph pageId="14" pageNumber="15">Diagnosis.</paragraph>
<paragraph pageId="14" pageNumber="15">
Macrocnemic zoanthids with a marginal endodermal sphincter muscle (=cteniform endodermal [
<bibRefCitation DOI="https://doi.org/10.1186/s12862-015-0406-1" author="Swain, TD" pageId="35" pageNumber="36" refId="B284" refString="Swain, TD, Schellinger, JL, Strimaitis, AM, Reuter, KE, 2015. Evolution of anthozoan polyp retraction mechanisms: convergent functional morphology and evolutionary allometry of the marginal musculature in order Zoanthidea (Cnidaria: Anthozoa: Hexacorallia). BMC Evolutionary Biology 15(123): 1-19. https://doi.org/10.1186/s12862-015-0406-1" title="Evolution of anthozoan polyp retraction mechanisms: convergent functional morphology and evolutionary allometry of the marginal musculature in order Zoanthidea (Cnidaria: Anthozoa: Hexacorallia). BMC Evolutionary Biology 15 (123): 1 - 19." url="https://doi.org/10.1186/s12862-015-0406-1" year="2015">Swain et al. 2015</bibRefCitation>
]) and inconspicouous mesogleal ring-sinus.
</paragraph>
</subSubSection>
<subSubSection lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15" type="remarks">
<paragraph pageId="14" pageNumber="15">Remarks.</paragraph>
<paragraph pageId="14" pageNumber="15">
The genus
<taxonomicName authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="genus">
<emphasis italics="true" pageId="14" pageNumber="15">Isozoanthus</emphasis>
</taxonomicName>
was first made available in Carlgren (in
<bibRefCitation author="Chun, C" pageId="23" pageNumber="24" refId="B57" refString="Chun, C, 1903. Aus den Tiefen des Weltmeeres. Schilderungen von der Deutschen Tiefsee-Expedition. Zweite umgearbeitete und Stark vermehrte Auflage. Gustav Fischer, Jena, ix + 592 pp., 482 figs., 46 pls., 3 maps. [15 Apr 1903 (Hallier 1903: 63)]" title="Aus den Tiefen des Weltmeeres. Schilderungen von der Deutschen Tiefsee-Expedition. Zweite umgearbeitete und Stark vermehrte Auflage. Gustav Fischer, Jena, ix + 592 pp., 482 figs., 46 pls., 3 maps. [15 Apr 1903 (Hallier 1903: 63)]" year="1903">Chun 1903</bibRefCitation>
: 520). The type species by monotypy is
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="14" pageNumber="15">Isozoanthus giganteus</emphasis>
</taxonomicName>
(first very briefly diagnosed and figured by Carlgren (in
<bibRefCitation author="Chun, C" pageId="23" pageNumber="24" refId="B57" refString="Chun, C, 1903. Aus den Tiefen des Weltmeeres. Schilderungen von der Deutschen Tiefsee-Expedition. Zweite umgearbeitete und Stark vermehrte Auflage. Gustav Fischer, Jena, ix + 592 pp., 482 figs., 46 pls., 3 maps. [15 Apr 1903 (Hallier 1903: 63)]" title="Aus den Tiefen des Weltmeeres. Schilderungen von der Deutschen Tiefsee-Expedition. Zweite umgearbeitete und Stark vermehrte Auflage. Gustav Fischer, Jena, ix + 592 pp., 482 figs., 46 pls., 3 maps. [15 Apr 1903 (Hallier 1903: 63)]" year="1903">Chun 1903</bibRefCitation>
: 520, unnumbered fig.).
<normalizedToken originalValue="Carlgrens">Carlgren's</normalizedToken>
(in Nordgaard 1905: 159) use of &quot;
<taxonomicName authorityName="Danielssen" authorityYear="1890" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus (Epizoanthus) arborescens" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="species" species="arborescens" subGenus="Epizoanthus">Isozoanthus (Epizoanthus) arborescens</taxonomicName>
&quot; and subsequent designation (i.e.
<bibRefCitation author="Carlgren, O" pageId="22" pageNumber="23" refId="B46" refString="Carlgren, O, 1913. Zoantharia. The Danish Ingolf Expedition 5(4): [1], 1-62, [1], pls. 1-7." title="Zoantharia. The Danish Ingolf Expedition 5 (4): [1], 1 - 62, [1], pls. 1 - 7." year="1913">Carlgren 1913</bibRefCitation>
: 39) of
<taxonomicName authorityName="Danielssen" authorityYear="1890" class="Anthozoa" family="Epizoanthidae" genus="Epizoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Epizoanthus arborescens" order="Zoantharia" pageId="14" pageNumber="15" phylum="Cnidaria" rank="species" species="arborescens">
<emphasis italics="true" pageId="14" pageNumber="15">Epizoanthus arborescens</emphasis>
</taxonomicName>
(Danielssen, 1890) as type species are thus invalid (Article 67.2,
<bibRefCitation author="ICZN" pageId="27" pageNumber="28" refId="B153" refString="ICZN, International Commission on Zoological Nomenclature, 1999. (1999) International Code of Zoological Nomenclature. Fourth Edition. The International Trust for Zoological Nomenclature, London, xxix + 306 pp." title="(1999) International Code of Zoological Nomenclature. Fourth Edition. The International Trust for Zoological Nomenclature, London, xxix + 306 pp." year="1999">ICZN 1999</bibRefCitation>
: 66, 67) (see also
<bibRefCitation DOI="https://doi.org/10.1080/00785236.1999.10409428" author="Williams, RB" pageId="36" pageNumber="37" refId="B301" refString="Williams, RB, 2000. A redescription of the zoanthid Isozoanthus sulcatus (Gosse, 1859), with notes on its nomenclature, systematics, behaviour, habitat and geographical distribution. Ophelia 52(3): 193-206. https://doi.org/10.1080/00785236.1999.10409428" title="A redescription of the zoanthid Isozoanthus sulcatus (Gosse, 1859), with notes on its nomenclature, systematics, behaviour, habitat and geographical distribution. Ophelia 52 (3): 193 - 206." url="https://doi.org/10.1080/00785236.1999.10409428" year="2000">Williams 2000</bibRefCitation>
: 195).
</paragraph>
<paragraph pageId="15" pageNumber="16">
<pageBreakToken pageId="15" pageNumber="16" start="start">The</pageBreakToken>
status of this genus is currently very confused. With the utility of the characters of the sphincter muscle in zoantharians in question (see
<bibRefCitation DOI="https://doi.org/10.1111/j.1365-294x.2010.04672.x" author="Swain, TD" pageId="35" pageNumber="36" refId="B282" refString="Swain, TD, 2010. Evolutionary transitions in symbioses: dramatic reductions in bathymetric and geographic ranges of Zoanthidea coincide with loss of symbioses with invertebrates. Molecular Ecology 19(12): 2587-598. https://doi.org/10.1111/j.1365-294x.2010.04672.x" title="Evolutionary transitions in symbioses: dramatic reductions in bathymetric and geographic ranges of Zoanthidea coincide with loss of symbioses with invertebrates. Molecular Ecology 19 (12): 2587 - 598." url="https://doi.org/10.1111/j.1365-294x.2010.04672.x" year="2010">Swain 2010</bibRefCitation>
,
<bibRefCitation DOI="https://doi.org/10.1007/s12526-009-0034-3" author="Sinniger, F" pageId="35" pageNumber="36" refId="B271" refString="Sinniger, F, Reimer, JD, Pawlowski, J, 2010a. The Parazoanthidae (Hexacorallia: Zoantharia) DNA taxonomy: description of two new genera. Marine Biodiversity 40(1): 57-70. https://doi.org/10.1007/s12526-009-0034-3" title="The Parazoanthidae (Hexacorallia: Zoantharia) DNA taxonomy: description of two new genera. Marine Biodiversity 40 (1): 57 - 70." url="https://doi.org/10.1007/s12526-009-0034-3" year="2010 a">Sinniger et al. 2010a</bibRefCitation>
), it is clear that more research is needed to clarify the diagnosis and taxonomic position of
<taxonomicName authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="genus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus</emphasis>
</taxonomicName>
. The taxonomy is further complicated by the recently described species (the hydroid-associated
<taxonomicName baseAuthorityName="Swain" baseAuthorityYear="2009" class="Anthozoa" family="Hydrozoanthidae" genus="Hydrozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrozoanthus antumbrosus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="antumbrosus">
<emphasis italics="true" pageId="15" pageNumber="16">Hydrozoanthus antumbrosus</emphasis>
</taxonomicName>
(Swain, 2009) originally described within
<taxonomicName authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="genus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus</emphasis>
</taxonomicName>
), and the octocoral-associated
<taxonomicName class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus primonodius" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="primonodius">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus primonodius</emphasis>
</taxonomicName>
Carreiro-Silva, Braga-Henriques, Sampaio, de Matos, Porteiro &amp;
<normalizedToken originalValue="Ocaña">Ocana</normalizedToken>
, 2010) clearly belong to other genera based on ecology and morphology. Furthermore, only limited molecular data is available for the type species
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus giganteus</emphasis>
</taxonomicName>
. Data in
<bibRefCitation DOI="https://doi.org/10.1111/j.1365-294x.2010.04672.x" author="Swain, TD" pageId="35" pageNumber="36" refId="B282" refString="Swain, TD, 2010. Evolutionary transitions in symbioses: dramatic reductions in bathymetric and geographic ranges of Zoanthidea coincide with loss of symbioses with invertebrates. Molecular Ecology 19(12): 2587-598. https://doi.org/10.1111/j.1365-294x.2010.04672.x" title="Evolutionary transitions in symbioses: dramatic reductions in bathymetric and geographic ranges of Zoanthidea coincide with loss of symbioses with invertebrates. Molecular Ecology 19 (12): 2587 - 598." url="https://doi.org/10.1111/j.1365-294x.2010.04672.x" year="2010">Swain (2010)</bibRefCitation>
indicate that
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus giganteus</emphasis>
</taxonomicName>
is highly divergent from both the well-researched species of
<taxonomicName authorityName="Carlgren, in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="genus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus</emphasis>
</taxonomicName>
-
<taxonomicName class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus sulcatus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="sulcatus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus sulcatus</emphasis>
</taxonomicName>
(Gosse, 1859)-and all known zoantharians. Recent work by
<bibRefCitation DOI="https://doi.org/10.1111/zoj.12075" author="Fujii, T" pageId="24" pageNumber="25" refId="B106" refString="Fujii, T, Reimer, JD, 2013. A new family of diminutive zooxanthellate zoanthids (Hexacorallia: Zoantharia). Zoological Journal of the Linnean Society 169(5): 509-522. https://doi.org/10.1111/zoj.12075" title="A new family of diminutive zooxanthellate zoanthids (Hexacorallia: Zoantharia). Zoological Journal of the Linnean Society 169 (5): 509 - 522." url="https://doi.org/10.1111/zoj.12075" year="2013">Fujii and Reimer (2013)</bibRefCitation>
shows that
<taxonomicName class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus sulcatus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="sulcatus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus sulcatus</emphasis>
</taxonomicName>
is likely within the
<taxonomicName family="Nanazoanthidae" lsidName="" pageId="15" pageNumber="16" rank="family">Nanazoanthidae</taxonomicName>
Fujii &amp; Reimer, 2013. However, as additional information on
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus giganteus</emphasis>
</taxonomicName>
is lacking, the diagnosis is retained with the caveat that any assignment of species to this genus should include: 1) phylogenetic confirmation of a close relationship with
<taxonomicName authorityName="Carlgren in Chun" authorityYear="1903" class="Anthozoa" family="Parazoanthidae" genus="Isozoanthus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isozoanthus giganteus" order="Zoantharia" pageId="15" pageNumber="16" phylum="Cnidaria" rank="species" species="giganteus">
<emphasis italics="true" pageId="15" pageNumber="16">Isozoanthus giganteus</emphasis>
</taxonomicName>
; and 2) the elimination of any possibility that the species in question does not belong to another parazoanthid genera based on morphology, ecological associations, and/or habitat.
</paragraph>
</subSubSection>
</treatment>
</document>