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130 lines
16 KiB
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<document id="F49F24C2E9DBA0FC1E0AF63FBD5F6FE5" ID-CLB-Dataset="7983" ID-DOI="10.11646/zootaxa.4876.1.1" ID-GBIF-Dataset="4ee8b608-7c73-4980-9e86-3e3719e91c7f" ID-ISSN="1175-5326" ID-Zenodo-Dep="4423612" ID-ZooBank="190EC586-E14B-4AEF-A5EF-3DA401656159" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1610025002304" checkinUser="plazi" docAuthor="Moreira, Camila Do Nascimento, Ventura, Karen, Percequillo, Alexandre Reis & Yonenaga-Yassuda, Yatiyo" docDate="2020" docId="03A587ED3210FFFA83E9FC4C2E12F852" docLanguage="en" docName="zootaxa.4876.1.1.pdf" docOrigin="Zootaxa 4876 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Oecomys bicolor" docType="treatment" docVersion="9" lastPageNumber="48" masterDocId="FF9CFF95323FFFD5837EFFC72C2BFFC7" masterDocTitle="A review on the cytogenetics of the tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae), with the description of new karyotypes" masterLastPageNumber="111" masterPageNumber="1" pageNumber="48" updateTime="1698923325624" updateUser="ExternalLinkService">
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<mods:title id="B758D8B0FF7BEE8F1C31E61B05539C93">A review on the cytogenetics of the tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae), with the description of new karyotypes</mods:title>
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<mods:namePart id="B222004732D27E56C6D5C796F36850D5">Moreira, Camila Do Nascimento</mods:namePart>
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<mods:namePart id="D9528F1F8414A7CA11950EDC85F66A63">Ventura, Karen</mods:namePart>
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<mods:namePart id="EE6D9DD087B42005DDAD4ADB580495B3">Percequillo, Alexandre Reis</mods:namePart>
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<mods:nameIdentifier id="3120D06A1851434D6C3D0B0C8D7E4E74" type="email">cmoreirabio@gmail.com</mods:nameIdentifier>
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<mods:namePart id="3C7F184B01B7D15EE382318A252CB544">Yonenaga-Yassuda, Yatiyo</mods:namePart>
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<mods:title id="182A520D7EEDB405A32892FFA8FFED81">Zootaxa</mods:title>
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<mods:date id="B917F905FB6B839D5AC2E2366B30315C">2020</mods:date>
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<mods:number id="697C1EA23E78404546DEBF1AE58DB4E4">2020-11-06</mods:number>
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<treatment id="03A587ED3210FFFA83E9FC4C2E12F852" ID-DOI="http://doi.org/10.5281/zenodo.4424162" ID-GBIF-Taxon="179917905" ID-Zenodo-Dep="4424162" LSID="urn:lsid:plazi:treatment:03A587ED3210FFFA83E9FC4C2E12F852" httpUri="http://treatment.plazi.org/id/03A587ED3210FFFA83E9FC4C2E12F852" lastPageNumber="48" pageId="47" pageNumber="48">
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<subSubSection id="C31665703210FFFA83E9FC4C2E51FB2E" pageId="47" pageNumber="48" type="nomenclature">
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<paragraph id="8BB336FB3210FFFA83E9FC4C2D7DFC62" blockId="47.[151,1437,907,1941]" box="[151,342,907,933]" pageId="47" pageNumber="48">
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<heading id="D0FB81973210FFFA83E9FC4C2D7DFC62" box="[151,342,907,933]" fontSize="11" level="2" pageId="47" pageNumber="48" reason="5">
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<taxonomicName id="4C0C4D783210FFFA83E9FC4C2D7DFC62" baseAuthorityName="Tomes" baseAuthorityYear="1860" box="[151,342,907,933]" class="Mammalia" family="Muridae" genus="Oecomys" kingdom="Animalia" order="Rodentia" pageId="47" pageNumber="48" phylum="Chordata" rank="species" species="bicolor">
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<emphasis id="B978EAE93210FFFA83E9FC4C2D7DFC62" box="[151,342,907,933]" italics="true" pageId="47" pageNumber="48">Oecomys bicolor</emphasis>
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<paragraph id="8BB336FB3210FFFA83B9FC682E51FB2E" blockId="47.[151,1437,907,1941]" pageId="47" pageNumber="48">
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Karyotype: 2n = 80 and FN = 140. Autosomal complement: 19 metacentric and submetacentric pairs medium to small decreasing in size, 12 subtelocentric pairs medium to small decreasing in size, and eight acrocentric pairs medium to small decreasing in size. Sex chromosomes: X, a large metacentric (the largest chromosome of the complement); Y, a small chromosome that appears to be acrocentric (
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<bibRefCitation id="EF9D4B0A3210FFFA80DFFBDC2847FBF2" author="Patton, J. L. & Silva, M. N. & Malcolm, J. R." box="[929,1132,1051,1077]" pageId="47" pageNumber="48" pagination="1 - 306" refId="ref71077" refString="Patton, J. L., Silva, M. N. & Malcolm, J. R. (2000) Mammals of the Rio Jurua and the evolutionary and ecological diversification of Amazonia. Bulletin of the American Museum of Natural History, 244, 1 - 306. https: // doi. org / 10.1206 / 0003 - 0090 (2000) 244 % 3 C 0001: MOTRJA % 3 E 2.0. CO; 2" type="journal article" year="2000">
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Patton
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<emphasis id="B978EAE93210FFFA808FFBDC2808FBF2" box="[1009,1059,1051,1077]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. 2000
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</bibRefCitation>
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, pp. 127, Fig. 87). Another fundamental number of 134 or 136 was reported by
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<bibRefCitation id="EF9D4B0A3210FFFA8195FBF82821FB9D" author="Gardner, A. L. & Patton, J. L." box="[747,1034,1087,1114]" pageId="47" pageNumber="48" pagination="1 - 48" refId="ref67114" refString="Gardner, A. L. & Patton, J. L. (1976) Karyotypic variation in Oryzomyine rodents (Cricetinae) with comments on chromosomal evolution in the Neotropical Cricetine complex. Occasional papers of the Museum of Zoology, 49, 1 - 48." type="journal article" year="1976">Gardner & Patton (1976)</bibRefCitation>
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, which was reported with three additional pairs of uniarmed and three less biarmed autosomal elements. However, according to
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<bibRefCitation id="EF9D4B0A3210FFFA87BFFBA429B7FBBA" author="Patton, J. L. & Silva, M. N. & Malcolm, J. R." box="[1217,1436,1123,1149]" pageId="47" pageNumber="48" pagination="1 - 306" refId="ref71077" refString="Patton, J. L., Silva, M. N. & Malcolm, J. R. (2000) Mammals of the Rio Jurua and the evolutionary and ecological diversification of Amazonia. Bulletin of the American Museum of Natural History, 244, 1 - 306. https: // doi. org / 10.1206 / 0003 - 0090 (2000) 244 % 3 C 0001: MOTRJA % 3 E 2.0. CO; 2" type="journal article" year="2000">
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Patton
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<emphasis id="B978EAE93210FFFA866FFBA42968FBBA" box="[1297,1347,1123,1149]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. (2000)
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</bibRefCitation>
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distinctions between the morphological categories can be quite difficult with such small chromosomes, and not too much emphasis should be placed on the presumptive differences between these two karyotypes. G-banding karyotype was performed by
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<bibRefCitation id="EF9D4B0A3210FFFA82DEFB082E5CFB2E" author="Baker, R. J. & Koop, B. F. & Haiduk, M. W." box="[416,631,1231,1257]" pageId="47" pageNumber="48" pagination="403 - 416" refId="ref64229" refString="Baker, R. J., Koop, B. F. & Haiduk, M. W. (1983) Resolving systematic relationships with G-bands: a study of five genera of South American Cricetine rodents. Systematic zoology, 32 (4), 403 - 416. https: // doi. org / 10.2307 / 2413167" type="journal article" year="1983">
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Baker
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<emphasis id="B978EAE93210FFFA8297FB082E30FB2E" box="[489,539,1231,1257]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. (1983)
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</bibRefCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C31665703210FFFA83B9FB342E12F852" pageId="47" pageNumber="48" type="description">
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<paragraph id="8BB336FB3210FFFA83B9FB342E5CF979" blockId="47.[151,1437,907,1941]" pageId="47" pageNumber="48">
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Another karyotype was applied for this species by
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<bibRefCitation id="EF9D4B0A3210FFFA806DFB342866FAC9" author="Gomes-Junior, R. G. & Schneider, C. H. & Lira, T. & Carvalho, N. D. M. & Feldberg, E. & Silva, M. N. F. & Gross, M. C." box="[787,1101,1267,1294]" pageId="47" pageNumber="48" pagination="401 - 426" refId="ref67406" refString="Gomes-Junior, R. G., Schneider, C. H., Lira, T., Carvalho, N. D. M., Feldberg, E., Silva, M. N. F. & Gross, M. C. (2016) Intense genomic reorganization in the genus Oecomys (Rodentia, Sigmodontinae): comparison between DNA barcoding and mapping of repetitive elements in three species of the Brazilian Amazon. Comparative cytogenetics, 10 (3), 401 - 426. https: // doi. org / 10.3897 / compcytogen. v 10 i 3.8306" type="journal article" year="2016">
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Gomes-Júnior
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<emphasis id="B978EAE93210FFFA80C5FB342FC4FACA" box="[955,1007,1267,1293]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. (2016)
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</bibRefCitation>
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. Karyotype: 2n = 80 and FN = 142. Autosomal complement: nine metacentric pairs medium to small decreasing in size, five submetacentric pairs medium to small decreasing in size, 18 subtelocentric pairs (one large and the remaining medium to small decreasing in size), and seven acrocentric pairs medium to small decreasing in size. Sex chromosomes: X, a large submetacentric (the largest chromosome of the complement); Y, a medium subtelocentric. C-banding metaphases exhibited blocks of constitutive heterochromatin on the pericentromeric region of all autosomes, in the majority of metacentric and submetacentric the C-band extends to the short arm. The X chromosome presented the short arm entirely heterochromatic. The Y chromosome presented the long arm entirely heterochromatic. G-banding was also performed. NORs were localized at the telomeric regions of the short arms of seven chromosomes of medium and small size. FISH with 18S rDNA revealed signals at the telomeric regions of the short arms of 12 medium to small autosomal pairs, while FISH with 5S rDNA revealed signals at the pericentromeric region of medium pair. FISH with telomeric sequences revealed signals exclusively at the ends of all chromosome arms and no interstitial signals were observed (
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<bibRefCitation id="EF9D4B0A3210FFFA8236F9642E47F979" author="Gomes-Junior, R. G. & Schneider, C. H. & Lira, T. & Carvalho, N. D. M. & Feldberg, E. & Silva, M. N. F. & Gross, M. C." box="[328,620,1699,1726]" pageId="47" pageNumber="48" pagination="401 - 426" refId="ref67406" refString="Gomes-Junior, R. G., Schneider, C. H., Lira, T., Carvalho, N. D. M., Feldberg, E., Silva, M. N. F. & Gross, M. C. (2016) Intense genomic reorganization in the genus Oecomys (Rodentia, Sigmodontinae): comparison between DNA barcoding and mapping of repetitive elements in three species of the Brazilian Amazon. Comparative cytogenetics, 10 (3), 401 - 426. https: // doi. org / 10.3897 / compcytogen. v 10 i 3.8306" type="journal article" year="2016">
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Gomes-Júnior
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<emphasis id="B978EAE93210FFFA828EF9642E0AF97A" box="[496,545,1699,1725]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. 2016
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</bibRefCitation>
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).
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</paragraph>
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<paragraph id="8BB336FB3210FFFA83B9F9002E12F852" blockId="47.[151,1437,907,1941]" pageId="47" pageNumber="48">
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Two more karyotypes, with 2n = 54 and FN = 82, and 2n = 82 and FN = 116, were attributed to this species by
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<bibRefCitation id="EF9D4B0A3210FFFA83E9F92C2DE0F8C1" author="Gomes-Junior, R. G. & Schneider, C. H. & Lira, T. & Carvalho, N. D. M. & Feldberg, E. & Silva, M. N. F. & Gross, M. C." box="[151,459,1771,1798]" pageId="47" pageNumber="48" pagination="401 - 426" refId="ref67406" refString="Gomes-Junior, R. G., Schneider, C. H., Lira, T., Carvalho, N. D. M., Feldberg, E., Silva, M. N. F. & Gross, M. C. (2016) Intense genomic reorganization in the genus Oecomys (Rodentia, Sigmodontinae): comparison between DNA barcoding and mapping of repetitive elements in three species of the Brazilian Amazon. Comparative cytogenetics, 10 (3), 401 - 426. https: // doi. org / 10.3897 / compcytogen. v 10 i 3.8306" type="journal article" year="2016">
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Gomes-Júnior
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<emphasis id="B978EAE93210FFFA8240F92C2D5AF8C2" box="[318,369,1771,1797]" italics="true" pageId="47" pageNumber="48">et al</emphasis>
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. (2016)
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</bibRefCitation>
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(unpublished data from T. Lira), based on molecular data. However, these karyotypes were distinctly from those previously reported to this species. Thus, we suggested a more detailed analyses, using morphological and molecular data combined, in the specimens studied by T. Lira, in order to correctly identify these specimens. Finally, these variation in diploid and fundamental number of
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<taxonomicName id="4C0C4D783210FFFA80B3F890286BF8B6" baseAuthorityName="Tomes" baseAuthorityYear="1860" box="[973,1088,1879,1905]" class="Mammalia" family="Muridae" genus="Oecomys" kingdom="Animalia" order="Rodentia" pageId="47" pageNumber="48" phylum="Chordata" rank="species" species="bicolor">
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<emphasis id="B978EAE93210FFFA80B3F890286BF8B6" box="[973,1088,1879,1905]" italics="true" pageId="47" pageNumber="48">O. bicolor</emphasis>
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</taxonomicName>
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occurs in different localities of Amazon rainforest (
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<tableCitation id="C68E03403210FFFA8209F8BC2DE7F852" box="[375,460,1915,1941]" captionStart="TABLE 8" captionStartId="48.[151,239,543,569]" captionTargetPageId="48" captionText="TABLE 8. Karyotype data of genus Oecomys. Species, diploid (2n) and fundamental (FN) numbers, collection localities, geographic coordinates and reference." pageId="47" pageNumber="48">Table 8</tableCitation>
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,
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<figureCitation id="13372A7E3210FFFA82A7F8BC2E07F852" box="[473,556,1915,1941]" captionStart="FIGURE 12" captionStartId="52.[151,250,1101,1125]" captionTargetBox="[158,1428,188,1071]" captionTargetId="figure-17@52.[151,1436,181,1077]" captionTargetPageId="52" captionText="FIGURE 12. Distribution of diploid and fundamental number of karyotyped specimens of genus Oecomys. (▲) O. auyantepui; (○) O. bicolor; (□) O. cleberi; (■) O. franciscorum; (ê) O. roberti; (l) Oecomys sp. 1; (r) Oecomys sp. 2." figureDoi="http://doi.org/10.5281/zenodo.4423645" httpUri="https://zenodo.org/record/4423645/files/figure.png" pageId="47" pageNumber="48">Fig. 12</figureCitation>
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).
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</paragraph>
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</treatment>
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