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<document id="014087A51E80E4EA4A261285485F9DCD" ID-DOI="10.1590/1982-0224-20170148" ID-GBIF-Dataset="6ed6d7fe-577a-4237-ab91-a8e4e8f879f1" ID-ISSN="1982-0224" ID-Zenodo-Dep="3709713" IM.metadata_requiresApprovalFor="plazi" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_requiresApprovalFor="plazi" checkinTime="1584124087752" checkinUser="carolina" docAuthor="Girardi, Simone C., Pavanelli, Carla S. &amp; Margarido, Vladimir P." docDate="2018" docId="AA5B879FFFAF4C703CD9FF614CD3FD7D" docLanguage="en" docName="NeotropIchthyol.16.2.e170148.pdf.imf" docOrigin="Neotropical Ichthyology 16 (2)" docStyle="DocumentStyle:85A40B78B715C4497F837D9D78407CE5.4:NeotropIchthyol.2003-2013.journal_article" docStyleId="85A40B78B715C4497F837D9D78407CE5" docStyleName="NeotropIchthyol.2003-2013.journal_article" docStyleVersion="4" docTitle="Pimelodus ortmanni Haseman 1911" docType="treatment" docVersion="6" lastPageNumber="10" masterDocId="5662FFE7FFA64C793C58FFD14D2AFF95" masterDocTitle="Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems" masterLastPageNumber="16" masterPageNumber="1" pageNumber="10" updateTime="1698727849928" updateUser="plazi" zenodo-license-document="CC-BY-4.0">
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<mods:title id="AF1146A21A12238068614EDB966AFD83">Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems</mods:title>
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<mods:namePart id="C46335A0D8D4894B794D3270E2505C98">Pavanelli, Carla S.</mods:namePart>
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<mods:title id="7DDF8F8CD854A8CFB695E4E14A7D3716">Neotropical Ichthyology</mods:title>
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<taxonomicName id="E5F24D0AFFAF4C703CD9FF614C43FF5D" ID-CoL="4HWMS" authorityName="Haseman" authorityYear="1911" box="[129,361,176,200]" class="Actinopterygii" family="Pimelodidae" genus="Pimelodus" kingdom="Animalia" order="Siluriformes" pageId="9" pageNumber="10" phylum="Chordata" rank="species" species="ortmanni">
<emphasis id="1086EA9BFFAF4C703CD9FF614C43FF5D" bold="true" box="[129,361,176,200]" italics="true" pageId="9" pageNumber="10">Pimelodus ortmanni</emphasis>
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The diploid number was also 56 chromosomes (
<quantity id="E50A9B6CFFAF4C703D7BFF014C71FF7D" box="[291,347,208,232]" metricMagnitude="1" metricUnit="m" metricValue="2.4" pageId="9" pageNumber="10" unit="m" value="24.0">24 m</quantity>
+ 18 sm + 8 st + 6 a) (
<figureCitation id="BAC92A0CFFAF4C703E0AFF014FB7FF7D" box="[594,669,208,232]" captionStart="Fig" captionStartId="6.[136,175,1821,1845]" captionTargetBox="[159,1428,183,1796]" captionTargetId="figure@6.[136,1459,174,1805]" captionTargetPageId="6" captionText="Fig. 1. Karyotypesarranged fromGiemsa-stained chromosomes.a. Pimelodusabsconditus; b. Pimelodusbritskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. Pairs of the AgNORs and B chromosomes are in the boxes. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709715" httpUri="https://zenodo.org/record/3709715/files/figure.png" pageId="9" pageNumber="10">Fig. 1f</figureCitation>
). Among one to four B chromosomes (micro-chromosomes and acrocentric) (
<figureCitation id="BAC92A0CFFAF4C703D48FEC14C71FEBD" box="[272,347,272,296]" captionStart="Fig" captionStartId="6.[136,175,1821,1845]" captionTargetBox="[159,1428,183,1796]" captionTargetId="figure@6.[136,1459,174,1805]" captionTargetPageId="6" captionText="Fig. 1. Karyotypesarranged fromGiemsa-stained chromosomes.a. Pimelodusabsconditus; b. Pimelodusbritskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. Pairs of the AgNORs and B chromosomes are in the boxes. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709715" httpUri="https://zenodo.org/record/3709715/files/figure.png" pageId="9" pageNumber="10">Fig. 1f</figureCitation>
) were observed in all specimens, with intra- and inter-individual variation (
<tableCitation id="6F700332FFAF4C703E57FEE14F7DFEDD" box="[527,599,304,328]" captionStart="Tab" captionStartId="9.[129,174,1527,1551]" captionTargetPageId="9" captionText="Tab. 4. Frequency of B chromosomes in Pimelodus ortmanni from the Iguaçu River. *Unidentified." httpUri="http://table.plazi.org/id/768D6601FFAF4C703CD9FA264983F99A" pageId="9" pageNumber="10" tableUuid="768D6601FFAF4C703CD9FA264983F99A">Tab. 4</tableCitation>
). The AgNORs were located in the terminal region of the long arm of a pair of subtelocentric chromosomes 24 (
<figureCitation id="BAC92A0CFFAF4C703DA4FEA14F6FFE1D" box="[508,581,368,392]" captionStart="Fig" captionStartId="6.[136,175,1821,1845]" captionTargetBox="[159,1428,183,1796]" captionTargetId="figure@6.[136,1459,174,1805]" captionTargetPageId="6" captionText="Fig. 1. Karyotypesarranged fromGiemsa-stained chromosomes.a. Pimelodusabsconditus; b. Pimelodusbritskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. Pairs of the AgNORs and B chromosomes are in the boxes. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709715" httpUri="https://zenodo.org/record/3709715/files/figure.png" pageId="9" pageNumber="10">Fig. 1f</figureCitation>
, box). C-banding revealed the existence of pale heterochromatin in the region of the telomeres and centromeres of some chromosomes, with more conspicuous heterochromatin being found in the telomeric region of short arm (pair 16) and long arm (pairs 10, 24 and 27), in both telomere (pair 5) and in the pericentromeric region of the long arm (pairs 17 and 18), while the B chromosomes are entirely heterochromatic (
<figureCitation id="BAC92A0CFFAF4C703CD0FDA14DF1FD1D" box="[136,219,624,648]" captionStart="Fig" captionStartId="7.[129,166,1847,1871]" captionTargetBox="[151,1418,179,1823]" captionTargetId="figure@7.[128,1451,174,1832]" captionTargetPageId="7" captionText="Fig.2. Karyotypesarranged from C-banded chromosomes.a. Pimelodusabsconditus; b. Pimelodus britskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. B chromosomes in the boxes. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709719" httpUri="https://zenodo.org/record/3709719/files/figure.png" pageId="9" pageNumber="10">Figs. 2f</figureCitation>
, 
<figureCitation id="BAC92A0CFFAF4C703CBCFDA14DDEFD1D" box="[228,244,624,648]" captionStart="Fig" captionStartId="9.[129,169,1393,1417]" captionTargetBox="[145,750,774,1370]" captionTargetId="figure@9.[129,768,774,1377]" captionTargetPageId="9" captionText="Fig. 4. C-banded metaphase of Pimelodus ortmanni. Arrows indicate the heterochromatic B chromosomes. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709723" httpUri="https://zenodo.org/record/3709723/files/figure.png" pageId="9" pageNumber="10">4</figureCitation>
). The 18S rDNA was located on the subtelocentric chromosome pair (24), which corresponds to the AgNORs, while the 5S rDNA was found in the pericentromeric region of the long arm of pair 18 (
<figureCitation id="BAC92A0CFFAF4C703DF9FD014CC6FD7D" box="[417,492,720,744]" captionStart="Fig" captionStartId="8.[136,179,1573,1597]" captionTargetBox="[136,1459,174,1558]" captionTargetId="figure@8.[136,1459,174,1558]" captionTargetPageId="8" captionText="Fig. 3. Karyotypes after FISH with 5S rDNA probes (red) and 18S rDNA probe (green). a. Pimelodus absconditus; b. Pimelodus britskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. Scales bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.3709721" httpUri="https://zenodo.org/record/3709721/files/figure.png" pageId="9" pageNumber="10">Fig. 3f</figureCitation>
)
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.
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