Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species
The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular an...
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| Veröffentlicht in: | Journal of genetics 2012-12, Vol.91 (3), p.265-277 |
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| creator | ROSA, C. C FLORES, T PIECZARKA, J. C ROSSI, R. V SAMPAIO, M. I. C RISSINO, J. D AMARAL, P. J. S NAGAMACHI, C. Y |
| description | The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species. |
| doi_str_mv | 10.1007/s12041-012-0182-2 |
| format | Article |
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C ; FLORES, T ; PIECZARKA, J. C ; ROSSI, R. V ; SAMPAIO, M. I. C ; RISSINO, J. D ; AMARAL, P. J. S ; NAGAMACHI, C. Y</creator><creatorcontrib>ROSA, C. C ; FLORES, T ; PIECZARKA, J. C ; ROSSI, R. V ; SAMPAIO, M. I. C ; RISSINO, J. D ; AMARAL, P. J. S ; NAGAMACHI, C. Y</creatorcontrib><description>The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species.</description><identifier>ISSN: 0022-1333</identifier><identifier>EISSN: 0973-7731</identifier><identifier>DOI: 10.1007/s12041-012-0182-2</identifier><identifier>PMID: 23271012</identifier><language>eng</language><publisher>India: Springer-Verlag</publisher><subject>Animal Genetics and Genomics ; Animals ; Biomedical and Life Sciences ; Chromosomes ; Chromosomes, Mammalian - genetics ; Cytochromes b - genetics ; cytotypes ; Differentiation ; DNA, Mitochondrial - chemistry ; DNA, Mitochondrial - genetics ; Evolutionary Biology ; forests ; Genetic diversity ; Genetic research ; Geography ; Karyotype ; karyotyping ; Life Sciences ; Microbial Genetics and Genomics ; Molecular Sequence Data ; Morphology ; Phylogenetics ; Phylogeny ; Plant Genetics and Genomics ; reproductive isolation ; Research Article ; Rodentia ; Rodents ; Sequence Analysis, DNA ; Sigmodontinae ; Sigmodontinae - anatomy & histology ; Sigmodontinae - classification ; Sigmodontinae - genetics ; South America ; Species Specificity</subject><ispartof>Journal of genetics, 2012-12, Vol.91 (3), p.265-277</ispartof><rights>Indian Academy of Sciences 2012</rights><rights>COPYRIGHT 2012 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c496t-1f64545b3e76e32d6d78fbf19692a7a02ba0f3adbe9639e3e3a570c7385da8a3</citedby><cites>FETCH-LOGICAL-c496t-1f64545b3e76e32d6d78fbf19692a7a02ba0f3adbe9639e3e3a570c7385da8a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12041-012-0182-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12041-012-0182-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23271012$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>ROSA, C. C</creatorcontrib><creatorcontrib>FLORES, T</creatorcontrib><creatorcontrib>PIECZARKA, J. C</creatorcontrib><creatorcontrib>ROSSI, R. V</creatorcontrib><creatorcontrib>SAMPAIO, M. I. C</creatorcontrib><creatorcontrib>RISSINO, J. D</creatorcontrib><creatorcontrib>AMARAL, P. J. S</creatorcontrib><creatorcontrib>NAGAMACHI, C. Y</creatorcontrib><title>Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species</title><title>Journal of genetics</title><addtitle>J Genet</addtitle><addtitle>J Genet</addtitle><description>The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species.</description><subject>Animal Genetics and Genomics</subject><subject>Animals</subject><subject>Biomedical and Life Sciences</subject><subject>Chromosomes</subject><subject>Chromosomes, Mammalian - genetics</subject><subject>Cytochromes b - genetics</subject><subject>cytotypes</subject><subject>Differentiation</subject><subject>DNA, Mitochondrial - chemistry</subject><subject>DNA, Mitochondrial - genetics</subject><subject>Evolutionary Biology</subject><subject>forests</subject><subject>Genetic diversity</subject><subject>Genetic research</subject><subject>Geography</subject><subject>Karyotype</subject><subject>karyotyping</subject><subject>Life Sciences</subject><subject>Microbial Genetics and Genomics</subject><subject>Molecular Sequence Data</subject><subject>Morphology</subject><subject>Phylogenetics</subject><subject>Phylogeny</subject><subject>Plant Genetics and Genomics</subject><subject>reproductive isolation</subject><subject>Research Article</subject><subject>Rodentia</subject><subject>Rodents</subject><subject>Sequence Analysis, DNA</subject><subject>Sigmodontinae</subject><subject>Sigmodontinae - anatomy & histology</subject><subject>Sigmodontinae - classification</subject><subject>Sigmodontinae - genetics</subject><subject>South America</subject><subject>Species Specificity</subject><issn>0022-1333</issn><issn>0973-7731</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkl1rFDEUhgdRbF39Ad5owJsKTs3HbDLTu6XUKhQKbr0OZzIn05SZZE1minvtH2_WrZ-IEkJOcp73kJO8RfGc0WNGqXqbGKcVKynjeda85A-KQ9ooUSol2MMcU85LJoQ4KJ6kdLPbKsofFwdccMWy7LD4eo4eJ2cI-I6MIW6uwxB6Z2AgtxAdtG5w05Y4T9Zhnq7JasSYs57E0KGfyCWaMG4TOVq7fgxd8JPzgG_Ix29pB69PCN66HBskNkQCJPObAb-QYEnaoHGYnhaPLAwJn92vi-Lq3dnV6fvy4vL8w-nqojRVI6eSWVktq2UrUEkUvJOdqm1rWSMbDgoob4FaAV2LjRQNChSwVNQoUS87qEEsiqN92U0Mn2dMkx5dMjgM4DHMSbOq4ZJKKen_Ua6Eok2Vn3ZRvPoDvQlz9LmPHVWruhIV_Un1MKB23oYpgtkV1SvFVM0UFypTx3-h8uhwdCZ4tC6f_yZge4GJIaWIVm-iGyFuNaN6ZxG9t4jOf613FtE8a17cX3huR-x-KL57IgN8D6Sc8j3GXzr6R9WXe5GFoKGPLulPa07ZklJGeS0rcQfdpM2_</recordid><startdate>20121201</startdate><enddate>20121201</enddate><creator>ROSA, C. 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C</au><au>FLORES, T</au><au>PIECZARKA, J. C</au><au>ROSSI, R. V</au><au>SAMPAIO, M. I. C</au><au>RISSINO, J. D</au><au>AMARAL, P. J. S</au><au>NAGAMACHI, C. Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species</atitle><jtitle>Journal of genetics</jtitle><stitle>J Genet</stitle><addtitle>J Genet</addtitle><date>2012-12-01</date><risdate>2012</risdate><volume>91</volume><issue>3</issue><spage>265</spage><epage>277</epage><pages>265-277</pages><issn>0022-1333</issn><eissn>0973-7731</eissn><abstract>The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species.</abstract><cop>India</cop><pub>Springer-Verlag</pub><pmid>23271012</pmid><doi>10.1007/s12041-012-0182-2</doi><tpages>13</tpages></addata></record> |
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| ispartof | Journal of genetics, 2012-12, Vol.91 (3), p.265-277 |
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| language | eng |
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| source | MEDLINE; Indian Academy of Sciences; EZB-FREE-00999 freely available EZB journals; SpringerLink Journals - AutoHoldings |
| subjects | Animal Genetics and Genomics Animals Biomedical and Life Sciences Chromosomes Chromosomes, Mammalian - genetics Cytochromes b - genetics cytotypes Differentiation DNA, Mitochondrial - chemistry DNA, Mitochondrial - genetics Evolutionary Biology forests Genetic diversity Genetic research Geography Karyotype karyotyping Life Sciences Microbial Genetics and Genomics Molecular Sequence Data Morphology Phylogenetics Phylogeny Plant Genetics and Genomics reproductive isolation Research Article Rodentia Rodents Sequence Analysis, DNA Sigmodontinae Sigmodontinae - anatomy & histology Sigmodontinae - classification Sigmodontinae - genetics South America Species Specificity |
| title | Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species |
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