treatments-xml/data/76/2C/87/762C8786FFF3FFA72390FB6BA6165CD9.xml
2024-06-21 12:40:43 +02:00

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<mods:title id="34AEFC34BD0508059BE9DCBDD6FC82C4">Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata</mods:title>
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<treatment id="762C8786FFF3FFA72390FB6BA6165CD9" ID-DOI="http://doi.org/10.5281/zenodo.7277553" ID-GBIF-Taxon="203932748" ID-Zenodo-Dep="7277553" LSID="urn:lsid:plazi:treatment:762C8786FFF3FFA72390FB6BA6165CD9" httpUri="http://treatment.plazi.org/id/762C8786FFF3FFA72390FB6BA6165CD9" lastPageNumber="427" pageId="26" pageNumber="427">
<subSubSection id="B69F651BFFF3FFA72390FB6BA5465FEC" box="[151,625,1158,1185]" pageId="26" pageNumber="427" type="nomenclature">
<paragraph id="FE3A3690FFF3FFA72390FB6BA5465FEC" blockId="26.[151,625,1158,1185]" box="[151,625,1158,1185]" pageId="26" pageNumber="427">
<heading id="A57281FCFFF3FFA72390FB6BA5465FEC" bold="true" box="[151,625,1158,1185]" fontSize="11" level="1" pageId="26" pageNumber="427" reason="1">
<taxonomicName id="39854D13FFF3FFA72390FB6BA5465FEC" ID-CoL="84TC8" authority="Hirose &amp; Mawatari, 2011" authorityName="Hirose &amp; Mawatari" authorityYear="2011" box="[151,625,1158,1185]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="genus">
<emphasis id="CCF1EA82FFF3FFA72390FB6BA5465FEC" bold="true" box="[151,625,1158,1185]" pageId="26" pageNumber="427">
<emphasis id="CCF1EA82FFF3FFA72390FB6BA60B5FED" bold="true" box="[151,316,1158,1185]" italics="true" pageId="26" pageNumber="427">Rumarcanella</emphasis>
Hirose &amp; Mawatari, 2011
</emphasis>
</taxonomicName>
</heading>
</paragraph>
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<subSubSection id="B69F651BFFF3FFA72390FB22A6165CD9" pageId="26" pageNumber="427" type="discussion">
<paragraph id="FE3A3690FFF3FFA72390FB22A49C5E35" blockId="26.[151,1437,1231,1941]" pageId="26" pageNumber="427">
The genus
<taxonomicName id="39854D13FFF3FFA72214FB22A6865FA5" authorityName="Hirose &amp; Mawatari" authorityYear="2011" box="[275,433,1231,1257]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="genus">
<emphasis id="CCF1EA82FFF3FFA72214FB22A6865FA5" box="[275,433,1231,1257]" italics="true" pageId="26" pageNumber="427">Rumarcanella</emphasis>
</taxonomicName>
is the first ever to be based primarily on a single feature of the statoblast: the presence of hypertubercles. A hypertubercle may be defined as a small tubercle that sits atop a larger tubercle, generally seen on the floatoblast fenestra, but occasionally also found on the sessoblast frontal valve. Other characteristics of the genus include a colony “ entirely adherent, composed of narrow, branching tubes, weakly chitinized; ectocyst thin, transparent, with almost no encrustation” (
<bibRefCitation id="9A144B61FFF3FFA72174FAB2A4A85E35" author="Hirose, M. &amp; Mawatari, S. F." box="[627,927,1375,1401]" pageId="26" pageNumber="427" pagination="1 - 19" refId="ref20431" refString="Hirose, M. &amp; Mawatari, S. F. (2011 b) Freshwater Bryozoa of Okinawa, Japan, with descriptions of Rumarcanella gen. nov. (Phylactolaemata: Plumatellidae) and two new species. Zootaxa, 2732 (1), 1 - 19. https: // doi. org / 10.11646 / zootaxa. 2732.1.1" type="journal article" year="2011">Hirose &amp; Mawatari 2011b</bibRefCitation>
).
</paragraph>
<paragraph id="FE3A3690FFF3FFA723C0FA6EA44C5EA9" blockId="26.[151,1437,1231,1941]" pageId="26" pageNumber="427">
Hypertubercles were first noticed in
<taxonomicName id="39854D13FFF3FFA72187FA6EA4EB5ED1" authority="(Toriumi, 1952)" baseAuthorityName="Toriumi" baseAuthorityYear="1952" box="[640,988,1410,1437]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="vorstmani">
<emphasis id="CCF1EA82FFF3FFA72187FA6EA4215ED0" box="[640,790,1411,1436]" italics="true" pageId="26" pageNumber="427">R. vorstmani</emphasis>
(
<bibRefCitation id="9A144B61FFF3FFA7202DFA6EA4E45ED1" author="Toriumi, M." box="[810,979,1410,1437]" pageId="26" pageNumber="427" pagination="264 - 269" refId="ref23226" refString="Toriumi, M. (1952) Taxonomical study on fresh-water Bryozoa IV. On Plumatella javanica Kraepelin reported by Vorstman in 1928. The Science Reports of the Tohoku University, Series 4, Biology, 19 (3), 264 - 269." type="journal article" year="1952">Toriumi, 1952</bibRefCitation>
)
</taxonomicName>
and
<taxonomicName id="39854D13FFF3FFA72718FA6EA26D5ED1" authority="(Toriumi, 1941)" baseAuthorityName="Toriumi" baseAuthorityYear="1941" box="[1055,1370,1411,1437]" class="Phylactolaemata" family="Plumatellidae" genus="Hyalinella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="minuta">
<emphasis id="CCF1EA82FFF3FFA72718FA6EA3A55ED0" box="[1055,1170,1411,1436]" italics="true" pageId="26" pageNumber="427">R. minuta</emphasis>
(Toriumi, 1941)
</taxonomicName>
, now synonymized under
<taxonomicName id="39854D13FFF3FFA72279FA4AA5145E8D" baseAuthorityName="Annandale" baseAuthorityYear="1911" box="[382,547,1447,1473]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="himalayana">
<emphasis id="CCF1EA82FFF3FFA72279FA4AA5145E8D" box="[382,547,1447,1473]" italics="true" pageId="26" pageNumber="427">R. himalayana</emphasis>
</taxonomicName>
. The list was later expanded to include two new species,
<taxonomicName id="39854D13FFF3FFA727BDFA4AA6615EA9" authority="Hirose &amp; Mawatari, 2011 b" authorityName="Hirose &amp; Mawatari" authorityYear="2011" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="gusuku">
<emphasis id="CCF1EA82FFF3FFA727BDFA4AA21D5E8D" box="[1210,1322,1447,1473]" italics="true" pageId="26" pageNumber="427">R. gusuku</emphasis>
<bibRefCitation id="9A144B61FFF3FFA72634FA4AA6615EA9" author="Hirose, M. &amp; Mawatari, S. F." pageId="26" pageNumber="427" pagination="1 - 19" refId="ref20431" refString="Hirose, M. &amp; Mawatari, S. F. (2011 b) Freshwater Bryozoa of Okinawa, Japan, with descriptions of Rumarcanella gen. nov. (Phylactolaemata: Plumatellidae) and two new species. Zootaxa, 2732 (1), 1 - 19. https: // doi. org / 10.11646 / zootaxa. 2732.1.1" type="journal article" year="2011">Hirose &amp; Mawatari, 2011b</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="39854D13FFF3FFA7228BFA26A4405EA9" authority="Hirose &amp; Mawatari, 2011 b" authorityName="Hirose &amp; Mawatari" authorityYear="2011" box="[396,887,1483,1509]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="yanbaruensis">
<emphasis id="CCF1EA82FFF3FFA7228BFA26A5775EA9" box="[396,576,1483,1509]" italics="true" pageId="26" pageNumber="427">R. yanbaruensis</emphasis>
<bibRefCitation id="9A144B61FFF3FFA72140FA26A4405EA9" author="Hirose, M. &amp; Mawatari, S. F." box="[583,887,1483,1509]" pageId="26" pageNumber="427" pagination="1 - 19" refId="ref20431" refString="Hirose, M. &amp; Mawatari, S. F. (2011 b) Freshwater Bryozoa of Okinawa, Japan, with descriptions of Rumarcanella gen. nov. (Phylactolaemata: Plumatellidae) and two new species. Zootaxa, 2732 (1), 1 - 19. https: // doi. org / 10.11646 / zootaxa. 2732.1.1" type="journal article" year="2011">Hirose &amp; Mawatari, 2011b</bibRefCitation>
</taxonomicName>
.
</paragraph>
<paragraph id="FE3A3690FFF3FFA723C0FA02A35B5DD5" blockId="26.[151,1437,1231,1941]" pageId="26" pageNumber="427">
This genus is considered problematic due to the likelihood that hypertubercles may not be a reliable unifying feature. For example, the floatoblasts of
<taxonomicName id="39854D13FFF3FFA72176F9FEA4115D60" authorityName="Wood" authorityYear="2022" box="[625,806,1555,1581]" class="Phylactolaemata" family="Plumatellidae" genus="Plumatella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="species" species="raoi">
<emphasis id="CCF1EA82FFF3FFA72176F9FEA4115D60" box="[625,806,1555,1581]" italics="true" pageId="26" pageNumber="427">Plumatella raoi</emphasis>
</taxonomicName>
also have hypertubercles, but the colony features free branches, not the “entirely adherent branches specified in the genus description. Therefore, we must either broaden the genus definition, or else recognize that hypertubercles do not occur exclusively in this genus. In fact, they may commonly occur in any species where the statoblast tubercles are especially prominent.
</paragraph>
<paragraph id="FE3A3690FFF3FFA723C0F94EA37A5C65" blockId="26.[151,1437,1231,1941]" pageId="26" pageNumber="427">
<bibRefCitation id="9A144B61FFF3FFA723C0F94EA53D5DF1" author="Hirose, M. &amp; Mawatari, S. F." box="[199,522,1699,1725]" pageId="26" pageNumber="427" pagination="1 - 19" refId="ref20431" refString="Hirose, M. &amp; Mawatari, S. F. (2011 b) Freshwater Bryozoa of Okinawa, Japan, with descriptions of Rumarcanella gen. nov. (Phylactolaemata: Plumatellidae) and two new species. Zootaxa, 2732 (1), 1 - 19. https: // doi. org / 10.11646 / zootaxa. 2732.1.1" type="journal article" year="2011">Hirose &amp; Mawatari (2011b)</bibRefCitation>
provided genetic evidence that four
<taxonomicName id="39854D13FFF3FFA720BFF94EA3865DF1" box="[952,1201,1699,1725]" pageId="26" pageNumber="427">
<emphasis id="CCF1EA82FFF3FFA720BFF94EA3615DF1" box="[952,1110,1699,1725]" italics="true" pageId="26" pageNumber="427">Rumarcanella</emphasis>
species
</taxonomicName>
with hypertubercles can be grouped in a single clade within a field that includes common plumatellids and fredericellids. This is useful information. However, it is possible that other species, with similar features but lacking statoblast hypertubercles, may also fall within the clade. Here again molecular studies could prove very useful.
</paragraph>
<paragraph id="FE3A3690FFF3FFA723C0F8DEA6165CD9" blockId="26.[151,1437,1231,1941]" pageId="26" pageNumber="427">
In time the definition of genus
<taxonomicName id="39854D13FFF3FFA72110F8DEA5825C01" authorityName="Hirose &amp; Mawatari" authorityYear="2011" box="[535,693,1843,1869]" class="Phylactolaemata" family="Plumatellidae" genus="Rumarcanella" kingdom="Animalia" order="Plumatellida" pageId="26" pageNumber="427" phylum="Bryozoa" rank="genus">
<emphasis id="CCF1EA82FFF3FFA72110F8DEA5825C01" box="[535,693,1843,1869]" italics="true" pageId="26" pageNumber="427">Rumarcanella</emphasis>
</taxonomicName>
may be modified in ways that place less reliance on hypertubercles. Until then it should remain as an interesting concept, but one that allows certain species with hypertubercles
<emphasis id="CCF1EA82FFF3FFA7265BF8BAA2B75C3C" box="[1372,1408,1879,1904]" italics="true" pageId="26" pageNumber="427">not</emphasis>
to be included.
</paragraph>
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