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<mods:title id="41BDF3A9A6B66A1EB75D78729015BFDB">Deep-water ascidians from the south-western Atlantic (RV Dmitry Mendeleev, cruise 43 and Academic Kurchatov, cruise 11)</mods:title>
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<heading id="D0F87B09FF9DFFB2FE90FBEE1F2AFBDB" box="[345,797,1115,1139]" centered="true" fontSize="10" level="2" pageId="39" pageNumber="342" reason="2">
<taxonomicName id="4C0FB7E6FF9DFFB2FE90FBEE1F2AFBDB" ID-CoL="6BQQC" authority="Vinogradova, 1962" authorityName="Vinogradova" authorityYear="1962" box="[345,797,1115,1139]" class="Ascidiacea" family="Pyuridae" genus="Culeolus" kingdom="Animalia" order="Stolidobranchia" pageId="39" pageNumber="342" phylum="Chordata" rank="species" species="antarcticus">
<emphasis id="B97B1077FF9DFFB2FE90FBEE1E0DFBDB" bold="true" box="[345,570,1115,1139]" italics="true" pageId="39" pageNumber="342">Culeolus antarcticus</emphasis>
Vinogradova, 1962
</taxonomicName>
</heading>
</paragraph>
<paragraph id="8BB0CC65FF9DFFB2FDC8FBCE1E41FB3B" blockId="39.[93,1046,1147,1230]" box="[513,630,1147,1172]" pageId="39" pageNumber="342">(®gure 24)</paragraph>
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<treatmentCitation id="0AAEEA74FF9DFFB2FF94FB281E04FB1B" author="VINOGRADOVA, N. G." box="[93,563,1181,1203]" page="207" pageId="39" pageNumber="342" year="1962">
<taxonomicName id="4C0FB7E6FF9DFFB2FF94FB281E04FB1B" ID-CoL="6BQQC" authority="Vinogradova, 1962 b: 207" authorityName="Vinogradova" authorityPageNumber="207" authorityYear="1962" box="[93,563,1181,1203]" class="Ascidiacea" family="Pyuridae" genus="Culeolus" kingdom="Animalia" order="Stolidobranchia" pageId="39" pageNumber="342" phylum="Chordata" rank="species" species="antarcticus">
<emphasis id="B97B1077FF9DFFB2FF94FB281D1EFB1B" box="[93,297,1181,1203]" italics="true" pageId="39" pageNumber="342">Culeolus antarcticus</emphasis>
<bibRefCitation id="EF9EB194FF9DFFB2FEF8FB281E04FB1B" author="VINOGRADOVA, N. G." box="[305,563,1181,1203]" pageId="39" pageNumber="342" pagination="215" refId="ref25400" refString="VINOGRADOVA, N. G., 1962 b, Ascidiae simplices of the Indian part of the Antarctic, in Explorations of the Fauna of the Seas, 1 (9). Biological Results of the Soviet Antarctic Expedition (1955 ± 1958), 1, 196 ± 215 (in Russian)." type="journal article" year="1962">Vinogradova, 1962b: 207</bibRefCitation>
</taxonomicName>
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;
<treatmentCitation id="0AAEEA74FF9DFFB2FD8BFB281FA9FB1B" author="MONNIOT, C. &amp; MONNIOT, F." box="[578,926,1181,1203]" page="117" pageId="39" pageNumber="342" year="1982">
<bibRefCitation id="EF9EB194FF9DFFB2FD8BFB281FA9FB1B" author="MONNIOT, C. &amp; MONNIOT, F." box="[578,926,1181,1203]" pageId="39" pageNumber="342" pagination="95" refId="ref24297" refString="MONNIOT, C. and MONNIOT, F., 1982, Some antarctic deep-sea tunicates in the Smithsonian collections, Antarctic Research Series, 32, 95 ± 130." type="journal article" year="1982">Monniot and Monniot, 1982: 117</bibRefCitation>
</treatmentCitation>
;
<treatmentCitation id="0AAEEA74FF9DFFB2FC64FB281827FB1B" author="MONNIOT, C. &amp; MONNIOT, F." box="[941,1040,1181,1203]" page="31" pageId="39" pageNumber="342" year="1985">
<bibRefCitation id="EF9EB194FF9DFFB2FC64FB281827FB1B" author="MONNIOT, C. &amp; MONNIOT, F." box="[941,1040,1181,1203]" pageId="39" pageNumber="342" pagination="37" refId="ref24457" refString="MONNIOT, C. and MONNIOT, F., 1985 b, Nouvelles reAcoltes de Tuniciers benthiques profonds dans l'oceAan Atlantique, Bulletin du MuseAum national d'Histoire naturelle, Paris, (4), 7 A, 5 ± 37." type="journal article" year="1985">1985b: 31</bibRefCitation>
</treatmentCitation>
.
<treatmentCitation id="0AAEEA74FF9DFFB2FF94FB0D1D80FB66" author="DIEHL, M." box="[93,439,1208,1230]" page="147" pageId="39" pageNumber="342" year="1977">
<taxonomicName id="4C0FB7E6FF9DFFB2FF94FB0D1D80FB66" ID-CoL="6C2PV" authority=": Diehl, 1977: 147" authorityName="Diehl" authorityPageNumber="147" authorityYear="1977" box="[93,439,1208,1230]" class="Ascidiacea" family="Pyuridae" genus="Culeolus" kingdom="Animalia" order="Stolidobranchia" pageId="39" pageNumber="342" phylum="Chordata" rank="species" species="sluiteri">
<emphasis id="B97B1077FF9DFFB2FF94FB0D1CC8FB66" box="[93,255,1208,1230]" italics="true" pageId="39" pageNumber="342">Culeolus sluiteri</emphasis>
:
<bibRefCitation id="EF9EB194FF9DFFB2FEC4FB0D1D80FB66" author="DIEHL, M." box="[269,439,1208,1230]" pageId="39" pageNumber="342" pagination="139" refId="ref23133" refString="DIEHL, M., 1977, Ascidien des Argentinischen Schelfs aus den Grundtrawl-FaEngen des FFS`Walter Herwing' auf seiner dritten SuEdamerika-Expedition, Mitteilungen aus dem zoologischen Museum Hamburg, 74, 139 ± 153." type="journal article" year="1977">Diehl, 1977: 147</bibRefCitation>
</taxonomicName>
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.
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</paragraph>
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<paragraph id="8BB0CC65FF9DFFB2FF4FFB5D1CE0FA97" blockId="39.[93,1049,1256,1662]" pageId="39" pageNumber="342">
<emphasis id="B97B1077FF9DFFB2FF4FFB5D1D6CFAA8" box="[134,347,1256,1280]" italics="true" pageId="39" pageNumber="342">Material examined</emphasis>
. St.
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,
<specimenCount id="9D0907ECFF9DFFB2FDBDFB5D1F39FAA8" box="[628,782,1256,1280]" pageId="39" pageNumber="342" type="generic">one specimen</specimenCount>
; st.
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,
<specimenCount id="9D0907ECFF9DFFB2FF94FABD1CCAFAB7" box="[93,253,1287,1311]" pageId="39" pageNumber="342" type="generic">one specimen</specimenCount>
; st.
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,
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; st.
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, ®ve specimens.
</paragraph>
<paragraph id="8BB0CC65FF9DFFBDFF4FFAFD1E3CFAD7" blockId="39.[93,1049,1256,1662]" lastBlockId="40.[93,1049,1256,1662]" lastPageId="40" lastPageNumber="343" pageId="39" pageNumber="342">
<emphasis id="B97B1077FF9DFFB2FF4FFAFD1D33FAF7" box="[134,260,1352,1375]" italics="true" pageId="39" pageNumber="342">Description</emphasis>
. The body length is from
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and all the specimens have broken peduncles. The general body shape is similar in all specimens, the body being elongate and slightly tapering anteriorly. The thin and ®rm test is completely covered by small spherules. A few of these slightly protrude like small papillae, but in a
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specimen from st. 925, the papillae are longer and more numerous, giving the specimen a shaggy appearance. The postero-ventral crest is T-shaped (®gure 24A), it consists of a short mid-ventral branch and two lateral branches running obliquely from the most postero-ventral point of the body and ending some distance from the corners of the slit-like atrial aperture. The lateral branches are straight or their free ends slightly curved dorsally and posteriorly (but not ventrally as ®gured by
<bibRefCitation id="EF9EB194FF92FFBDFEC8FB5D1DDDFAA8" author="VINOGRADOVA, N. G." box="[257,490,1256,1280]" pageId="40" pageNumber="343" pagination="215" refId="ref25400" refString="VINOGRADOVA, N. G., 1962 b, Ascidiae simplices of the Indian part of the Antarctic, in Explorations of the Fauna of the Seas, 1 (9). Biological Results of the Soviet Antarctic Expedition (1955 ± 1958), 1, 196 ± 215 (in Russian)." type="journal article" year="1962">Vinogradova, 1962b</bibRefCitation>
). The mid-ventral branch is absent only in the smallest (
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) specimen. The postero-ventral crest has sometimes free papillae, or they are united along most of their length to form a solid lamella. Papillae are arranged in one line in most specimens, but are crowded and form a wide band in the`shaggy specimen referred above.
</paragraph>
<caption id="DF709CEDFF92FFBDFFA5FB2A183DFB1C" ID-DOI="http://doi.org/10.5281/zenodo.5362663" ID-Zenodo-Dep="5362663" box="[108,1034,1182,1204]" httpUri="https://zenodo.org/record/5362663/files/figure.png" pageId="40" pageNumber="343" startId="40.[108,124,1183,1204]" targetBox="[210,931,106,1155]" targetPageId="40">
<paragraph id="8BB0CC65FF92FFBDFFA5FB2A183DFB1C" blockId="40.[108,1034,1182,1204]" box="[108,1034,1182,1204]" pageId="40" pageNumber="343">
FIG. 23.
<taxonomicName id="4C0FB7E6FF92FFBDFF1AFB2A1E77FB1C" authority="Michaelsen, 1904" authorityName="Michaelsen" authorityYear="1904" box="[211,576,1182,1204]" class="Ascidiacea" family="Pyuridae" genus="Pyura" kingdom="Animalia" order="Stolidobranchia" pageId="40" pageNumber="343" phylum="Chordata" rank="species" species="bouvetensis">
<emphasis id="B97B1077FF92FFBDFF1AFB2A1DBFFB1C" box="[211,392,1182,1204]" italics="true" pageId="40" pageNumber="343">Pyura bouvetensis</emphasis>
<bibRefCitation id="EF9EB194FF92FFBDFE59FB2B1E77FB1C" author="MICHAELSEN, W." box="[400,576,1182,1204]" pageId="40" pageNumber="343" pagination="181" refId="ref23612" refString="MICHAELSEN, W., 1904, Die Stolidobranchiaten Ascidien der deutschen Tiefsee Expedition, Wissenschaftlichen Ergebnisse der Deutschen Tiefsee-Expedition, 7, 181 ± 260." type="journal article" year="1904">Michaelsen, 1904</bibRefCitation>
</taxonomicName>
: (A) intact specimen; (B) opened specimen.
</paragraph>
</caption>
<paragraph id="8BB0CC65FF92FFBDFF4FFA321FE3F9B6" blockId="40.[93,1049,1256,1662]" pageId="40" pageNumber="343">
About 22 large and heavily branched tentacles are present. In opened specimens they hide the whole prebranchial area and project beyond the rim of the branchial siphon. The branchial sac has usually six folds on each side, but only ®ve on the right side in the
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specimen from st. 908. The branchial formula of the ®gured specimen is: E2(3)2(4)2 (6)4 (7)3(7)4 (4)2DL3(5)5 (4)3(6)3(5)2 (3)1(4)2E.
</paragraph>
<paragraph id="8BB0CC65FF92FFBCFF4FF9931D5CFBB8" blockId="40.[93,1049,1256,1662]" lastBlockId="41.[93,1049,984,1455]" lastPageId="41" lastPageNumber="344" pageId="40" pageNumber="343">
One gonad is present on each side of the body, the left is in the gut loop. Each gonad consists of three to seven lobes; the number of lobes does not necessarily depend on body size as the two smallest specimens (10 and
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long) have seven lobes on the left gonad and three on the right, but the
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specimen has ®ve and four lobes, respectively.
</paragraph>
<caption id="DF709CEDFF93FFBCFF94FCC4182EFC2E" ID-DOI="http://doi.org/10.5281/zenodo.5299695" ID-Zenodo-Dep="5299695" box="[93,1049,880,902]" httpUri="https://zenodo.org/record/5299695/files/figure.png" pageId="41" pageNumber="344" startId="41.[93,109,881,902]" targetBox="[229,915,107,853]" targetPageId="41">
<paragraph id="8BB0CC65FF93FFBCFF94FCC4182EFC2E" blockId="41.[93,1049,880,902]" box="[93,1049,880,902]" pageId="41" pageNumber="344">
FIG. 24.
<taxonomicName id="4C0FB7E6FF93FFBCFF0CFCC51E60FC2E" authority="Vinogradova, 1962" authorityName="Vinogradova" authorityYear="1962" box="[197,599,880,902]" class="Ascidiacea" family="Pyuridae" genus="Culeolus" kingdom="Animalia" order="Stolidobranchia" pageId="41" pageNumber="344" phylum="Chordata" rank="species" species="antarcticus">
<emphasis id="B97B1077FF93FFBCFF0CFCC51DB8FC2E" box="[197,399,880,902]" italics="true" pageId="41" pageNumber="344">Culeolus antarcticus</emphasis>
Vinogradova, 1962
</taxonomicName>
: (A) intact specimen; (B) opened specimen.
</paragraph>
</caption>
<paragraph id="8BB0CC65FF93FFBCFF4FFBAD1FC4FB98" blockId="41.[93,1049,984,1455]" box="[134,1011,1048,1072]" pageId="41" pageNumber="344">The anal border is characteristic, with two ¯at lobes, each with a lobed rim.</paragraph>
<paragraph id="8BB0CC65FF93FFBCFF4FFB8D1CEFFB58" blockId="41.[93,1049,984,1455]" pageId="41" pageNumber="344">
<emphasis id="B97B1077FF93FFBCFF4FFB8D1CDEFBF8" box="[134,233,1080,1104]" italics="true" pageId="41" pageNumber="344">Remarks</emphasis>
. Although the postero-ventral crest may be solid or formed by papillae of various lengths, its general shape is constant and this is a good distinguishing character for the species. On the other hand, the presence or absence of other papillae on the body is variable. The presence of only one, usually long, gonad on each side of the body, and the shape of the anal border are other distinguishing characters.
</paragraph>
<paragraph id="8BB0CC65FF93FFBCFF4FFB4D1D61FAC7" blockId="41.[93,1049,984,1455]" pageId="41" pageNumber="344">
The species was initially described from the Indian sector of the Antarctic and then recorded from the south-east Paci®c and the south-west Atlantic, the Ross Sea; the most northern record is from the
<collectingRegion id="49CB0287FF93FFBCFDD3FA821E62FAE7" box="[538,597,1335,1359]" country="South Africa" name="Western Cape" pageId="41" pageNumber="344">Cape</collectingRegion>
Basin (33
<emphasis id="B97B1077FF93FFBCFD06FA821EEEFAE7" bold="true" box="[719,729,1335,1359]" italics="true" pageId="41" pageNumber="344">ss</emphasis>
N). It probably has a periantarcti c distribution.
</paragraph>
<paragraph id="8BB0CC65FF93FFBCFF4FFAC21CD0FA07" blockId="41.[93,1049,984,1455]" pageId="41" pageNumber="344">
This is the deepest record for this species, the greatest depth previously recorded was
<quantity id="4CF76180FF93FFBCFF58FA221CD4FA07" box="[145,227,1431,1455]" metricMagnitude="3" metricUnit="m" metricValue="4.82" pageId="41" pageNumber="344" unit="m" value="4820.0">4820 m</quantity>
.
</paragraph>
</subSubSection>
</treatment>
</document>