Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 5346 No. 5: 21 Sept. 2023
Type: Article
Published: 2023-09-21
DOI: 10.11646/zootaxa.5346.5.5
Page range: 581-597
Abstract views: 273
PDF downloaded: 17

Reevaluation of Rhipidomys emiliae (J.A. Allen 1916) and description of a new Rhipidomys (Rodentia: Cricetidae) species from Amazonia and Cerrado

Postgraduate program in Genetics; Universidade Federal do Rio de Janeiro; Rio de Janeiro Brazil
Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios; IOC; Fiocruz; Rio de Janeiro; Brasil
Mammalia cytochrome b karyotype morphology neotropical rodent phylogeny Sigmodontinae

Abstract

We present the revalidation of the sigmodontinae rodent species R. emiliae, as well as the description of a new species for the genus Rhipidomys. The maximum likelihood analysis recovers R. emiliae as sister species of the clade with Rhipidomys sp. nov. and R. ipukensis, with high bootstrap values. Comparisons between these species based on the external, cranial, and dental morphology identified several unique characters in Rhipidomys sp. nov., including more grayish brown color of the dorsal coat, subsquamosal fenestra wide and long, angular process ends in the same position of the end of condyloid process, conspicuous protostyle and enterostyle. We describe a new karyotype (2n = 44 and FN = 64) for the genus and, based on an integrative analysis together with morphology and molecular phylogeny, assign it to R. emiliae, and assign the karyotype with 2n = 44 and FN = 52 to Rhipidomys sp. nov.. The analysis integrating data indicated that R. emiliae has a geographic distribution restricted to the lowlands of eastern Amazonia, whereas Rhipidomys sp. nov. occurs in the central Amazonia and Cerrado. The data showed that some Rhipidomys species have its distribution currently limited by rivers, as Rhipidomys sp. nov. occurring west of the Araguaia-Tocantins interfluve, R. emiliae east of the Tocantins River, and R. ipukensis between the Tocantins and Araguaia rivers. This work, in addition to revealing a still unknown biodiversity describing a species, brings a new understanding to the genus, and shows how integrating different markers helps in the correct association between the nominal form and the karyotype.

 

References

  1. Allen, J.A. (1916) New mammals collected on the Roosevelt Brazilian expedition. Bulletin of the American Museum of Natural History, 35, 523–530.
  2. Andrades-Miranda, J., de Oliveira, L.F.B. & Lima-Rosa, C.A.V. (2002) Genetics studies in representatives of genus Rhipidomys (Rodentia, Sigmodontinae) from Brazil. Acta Theriologica, 47 (2), 125–135. https://doi.org/10.1007/BF03192453
  3. Andrade, A.F.B. & Bonvicino, C.R. (2003) A new karyological variant of Oecomys (Rodentia: Sigmodontinae) and its phylogenetic relationships based on molecular data. Genome, 46, 195–203. https://doi.org/10.1139/g02-123
  4. Bradley, R.D. & Baker, R.J. (2001) A test of the Genetic Species Concept: cytochrome–b sequences and mammals. Journal of Mammalogy, 82, 960–973. https://doi.org/10.1644/1545-1542(2001)082%3C0960:ATOTGS%3E2.0.CO;2
  5. Brito, J.M., Tinoco, N., Chávez, D., Moreno-Cárdenas, P., Batallas D. & Ojala-Barbour, R. (2017) New species of arboreal rat of the genus Rhipidomys (Cricetidae, Sigmodontinae) from Sangay National Park, Ecuador. Neotropical Biodiversity, 3, 65–79. https://doi.org/10.1080/23766808.2017.1292755
  6. Campos, B.A.T.P., Percequillo, A.R., Miranda, G. & Langguth, A. (2022) Two new species of Rhipidomys (Rodentia: Sigmodontinae) from Eastern Brazil, with comments on the taxonomy of the genus. Hystrix, the Italian Journal of Mammalogy, 33 (2), 139–157.
  7. Carleton, M.D. & Musser, G.G. (1989) Systematic studies of oryzomyine rodents (Muridae: Sigmodontinae): a synopsis of Microryzomys. Bulletin of the American Museum of Natural History, 191, 1–83.
  8. Carvalho, A.H. (2017) Evolução molecular e cariotípica em Rhipidomys Tschudi, 1845 (Rodentia, Cricetidae). Dissertation, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, 79 pp.
  9. Casado, F., Bonvicino, C.R., Nagle, C., Comas, B., Manzur, T.D., Lahoz, M.M. & Seuánez, H.N. (2010) Mitochondrial divergence between 2 populations of the hooded capuchin, Cebus (Sapajus) cay (Platyrrhini, Primates). Journal of Heredity, 101 (3), 26–269. https://doi.org/10.1093/jhered/esp119
  10. Cassens I., Vicario, S., Waddell, V.G., Balchowsky, H., Van Belle, D., Ding, W., Fan, C., Lal Mohan, R.S., Simões-Lopes, P.C., Bastida, R., Meyer, A., Stanhope, M.J. & Milinkovitch, M.C. (2000) Independent adaptation to riverine habitats allowed survival of ancient cetacean lineages. PNAS, 97, 11343–11347. https://doi.org/10.1073/pnas.97.21.11343
  11. Costa, L.P. (2003) The historical bridge between the Amazon and Atlantic Forest of Brazil: a study of molecular phylogeography with small mammals. Journal of Biogeography, 30 (1), 71–86. https://doi.org/10.1046/j.1365-2699.2003.00792.x
  12. Costa, B.M.A., Geise, L., Pereira, L.G. & Costa, L.P. (2011) Phylogeography of Rhipidomys (Rodentia: Cricetidae: Sigmodontinae) and description of two new species from southeastern Brazil. Journal of Mammalogy, 92, 945–962. https://doi.org/10.1644/10-MAMM-A-249.1
  13. De La Sancha, N.U., D’Elía, G., Tribe, C.J., Perez, P.E., Valdez, L. & Pine, R.H. (2011) Rhipidomys (Rodentia, Cricetidae) from Paraguay: noteworthy new records and identity of the Paraguayan species. Mammalia, 75, 269–276. https://doi.org/10.1515/mamm.2011.022
  14. De Queiroz, K. (2007) Species concepts and species delimitation. Systematic Biology, 56 (6), 879–886. https://doi.org/10.1080/10635150701701083
  15. Felsenstein, J. (1985) Confidence limits on phylogenies: An approach using the Bootstrap. Evolution, 39, 783–791. https://doi.org/10.2307/2408678
  16. Gardner, A.L. (1990) Two new mammals from southern Venezuela and comments on the affinities of the highland fauna of Cerro de la Neblina. In: Redford K.H. & Eisenberg J.F. (Eds.), Advances in Neotropical Mammalogy. The Sandhill Crane Press Inc., Gainesville, Florida, pp. 411–424.
  17. Gervais, P. (1855 [1856]) Cinquième mémoire. Énumération des principals espèces de mammifères. In: Gervais, P. (Ed.), Mammifères, Animaux nouveaux ou rares recueillis pendant l’expédition dans les parties centrales de l’Amérique du Sud, de Rio de Janeiro à Lima, et de Lima au Pará; exécutée par ordre du gouvernement français pendant les années 1843 à 1847, sous la direction du comte Francis de Castelnau. Zoologie. Tome 1. 7e. P. Bertrand, Paris, pp. 107–116.
  18. Gonçalves, P.R., Almeida, F.C. & Bonvicino, C.R. (2005) A new species of Wiedomys (Rodentia: Sigmodontinae) from Brazilian Cerrado. Mammalian Biology, 70, 46–60. https://doi.org/10.1078/1616-5047-00175
  19. Gonçalves, P.R., Christoff, A.U., Machado, L.F., Bonvicino, C.R., Peters, F.B. & Percequillo, A.R. (2020) Unraveling deep branches of the Sigmodontinae tree (Rodentia: Cricetidae) in Eastern South America. Journal of Mammalogy Evolution, 27, 139–160. https://doi.org/10.1007/s10914-018-9444-y
  20. Gurgel-Filho, N.M., Feijó, A. & Langguth, A. (2015) Pequenos mamíferos do Ceará (Marsupiais, morcegos e roedores sigmodontíneos) com discussão taxonômica de algumas espécies. Revista Nordestina de Biologia, 23, 3–150.
  21. Hasegawa, M., Lida, Y., Yano, T., Takaiwa, F. & Iwabuchi, M. (1985) Phylogenetic relationships among eukaryotic kingdoms inferred by ribosomal RNA sequences. Journal of Molecular Evolution, 22, 32–38. https://doi.org/10.1007/BF02105802
  22. Irwin, D.M., Kocher, T.D. & Wilson, A.C. (1991) Evolution of the cytochrome b gene of mammals. Journal of Molecular Evolution, 32 (2), 128–144. https://doi.org/10.1007/BF02515385
  23. Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: Molecular evolutionary genetics analysis across computing platforms. Molecular Biology and Evolution, 35, 1547–1549. https://doi.org/10.1093/molbev/msy096
  24. Lund, P.W. (1840) Fortsaettelse af Pattedyrene. Lagoa Santa den 12te Septbr. 1838. Det Kongelige Danske Videnskabernes Selskabs Naturvidenskabelige og Mathematiske Afhandlinger, 3 (11), 1–56.
  25. Nguyen, L.T., Schmidt, H.A., Von Haeseler, A. & Minh, B.Q. (2015) IQ-TREE: a fast and effective stochastic algorithm for estimating maximum–likelihood phylogenies. Molecular Biology and Evolution, 32, 268–274. https://doi.org/10.1093/molbev/msu300
  26. Patton, J.L., da Silva, M.N.F. & Malcolm, J.R. (2000) Mammals of the Rio Juruá 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%3C0001:MOTRJA%3E2.0.CO;2
  27. Pine, R.H. (1973) Mammals (exclusive of bats) of Belém, Pará, Brazil. Acta Amazonica, 3, 47–79. https://doi.org/10.1590/1809-43921973032047
  28. Pires, C., Gudinho, F. & Weksler, M. (2016) Morfologia dentária de gêneros de Sigmodontinae (Rodentia: Cricetidae) com ocorrência no Cerrado brasileiro. Boletim da sociedade brasileira de Mastozoologia, 75, 1–32.
  29. Reig, O.A. (1977) A proposed unified nomenclature for the enamelled components of the molar teeth of the Cricetidae (Rodentia). Journal of Zoology, 181, 227–241. https://doi.org/10.1111/j.1469-7998.1977.tb03238.x
  30. Rocha, R.G., Ferreira, E., Costa, B.M.A., Martins, I.C.M., Leite, Y.L.R., Costa, L.P. & Fonseca, C. (2011) Small mammals of the mid-Araguaia River in Central Brazil, with the description of a new species of climbing rat. Zootaxa, 2789 (1), 1–34. https://doi.org/10.11646/zootaxa.2789.1.1
  31. Schenk, J.J. & Steppan, S.J. (2018) The role of geography in adaptive radiation. The American Naturalist, 192 (4), 415–431. https://doi.org/10.1086/699221
  32. Silva, M.J.J. & Yonenaga-Yassuda, Y. (1999) Autosomal and sex chromosomal polymorphisms with multiple rearrangements and a new karyotype in the genus Rhipidomys (Sigmodontinae, Rodentia) Hereditas, 131, 211–220. https://doi.org/10.1111/j.1601-5223.1999.00211.x
  33. Tamura, K. & Nei, M. (1993) Estimation of the number of nucleotide substitutions in the control region of mitochondrial—DNA in humans and chimpanzees. Molecular Biology and Evolution, 10, 512–526.
  34. Thomas, O. (1901) On a collection of mammals from the Kanuku Mountains, British Guiana. Annals and Magazine of Natural History, Series 7, 8 (44), 139–154. https://doi.org/10.1080/03745480109442900
  35. Tomes, R.F. (1860) Notes on a second collection of Mammalia made by Mr. Fraser in the Republic of Ecuador. Proceedings of the Zoological Society of London, Part II, 211–221.
  36. Tribe, C.J. (1996) The Neotropical rodent genus Rhipidomys (Cricetidae: Sigmodontinae)—a taxonomic revision. Dissertation, University College London, London, 316 pp.
  37. Tribe, C.J. (2005) A new species of Rhipidomys (Rodentia, Muroidea) from north-eastern Brazil. Archivos do Museu Nacional do Rio de Janeiro, Rio de Janeiro, 63, 131–146.
  38. Tribe, C.J. (2015) Genus Rhipidomys Tschudi, 1945. In: Patton, J.L., Pardiñas, U.F.J. & D`Elía, G. (Eds.), Mammal of South America. Vol. 2. Rodents. The University of Chicago Press, Chicago and London, pp. 583–617.
  39. Volobouev, V.T. & Catzeflis, F.M. (2000) “Chromosome banding analysis (G–, R–and C-bands) of Rhipidomys nitela and a review of the cytogenetics of Rhipidomys (Rodentia, Sigmodontinae), Mammalia, 64 (3), 353–360. https://doi.org/10.1515/mamm.2000.64.3.353
  40. Voss, R.S. (1988) Systematic and ecology of ichthyomyine rodents (Muroidea)—patterns of morphological evolution in a small adaptative radiation. Bulletin of the American Museum of Natural History, 188, 259–493.
  41. Voss, R.S. (1993) A revision of the Brazilian muroid rodent genus Delomys with remarks on ‘‘thomasomyine’’ characters. American Museum Novitates, 3073, 1–44.
  42. Weksler, M. (2006) Phylogenetic relationships of oryzomyine rodents (Muroidea: Sigmodontinae): separate and combined analyses of morphological and molecular data. Bulletin of the American Museum of Natural History, 296, 1–149. https://doi.org/10.1206/0003-0090(2006)296[0001:PROORM]2.0.CO;2
  43. Yang, Z., Goldman, N. & Friday, A.E. (1994) Comparison of models for nucleotide substitution used in maximum likelihood phylogenetic estimation. Molecular Biology and Evolution, 11 (2), 316–324.
  44. Zanchin, N.I.T., Langguth, A. & Mattevi, M.S. (1992) Karyotypes of Brazilian species of Rhipidomys (Rodentia, Cricetidae). Journal of Mammalogy, 73 (1), 120–122. https://doi.org/10.2307/1381872