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Type: Article
Published: 2009-06-09
Page range: 39–60
Abstract views: 72
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Taxonomy and distribution of Abrawayaomys (Rodentia: Cricetidae), an Atlantic Forest endemic with the description of a new species

Unidad de Investigación Diversidad, Sistemática y Evolución, Centro Nacional Patagónico, Casilla de Correo 128, 9120 Puerto Madryn, Chubut, Argentina
Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Av. Angel Gallardo 470, C1405DJR Buenos Aires, Argentina
Departamento de Zoología, Universidad de Concepción, Casilla 160-C, Concepción, Chile
Mammalia Argentina Brazil Misiones Sigmodontinae taxonomy Thomasomyini

Abstract

Abrawayaomys is a monotypic sylvan cricetid genus that stands out within the sigmodontine radiation due to its spiny pelage associated with unusual craniodental morphology. We made a reappraisal of its knowledge throughout the known distribution, critically addressing their geographic distribution in Argentina (four recording localities restricted to the province of Misiones) and providing a detailed morphological analysis of one trapped individual from Iguazú area; this, plus an examination of other available specimens and literature data permits to produce an emended diagnosis for the genus. Comparisons among the few known specimens from Argentina and Brazil highlighted several differences in measurements as well as in craniodental and external morphology, allowing the description of a new species and suggesting the potential existence of another still undescribed form for the Brazilian populations of Minas Gerais. This new alpha-taxonomy scenario is preliminary correlated to the main geomorphological features that characterize southeastern Brazil. The phylogenetic position of Abrawayaomys, historically assigned to Thomasomyini or considered as a sigmodontine incertae sedis, is discussed in the light of the traits described here. Based on this new evidence, we suggest assigning Abrawayaomys to Thomasomyini, although similarities (here regarded as convergences) with members of Akodontini are highlighted.

References

  1. Benedic, F.A. (1957) Hair structure as a generic character in bats. University of California Publications in Zoology, 59, 285–548.

    Cabanne, G.S., Santos, F.R. & Miyaki, C.Y. (2007) Phylogeography of Xiphorhynchus fuscus (Passeriformes, Dendrocolaptidae): vicariance and recent demographic expansion in southern Atlantic forest. Biological Journal of the Linnean Society, 91, 73–84.

    Carleton, M.D. (1973) A survey of gross stomach morphology in New World Cricetine (Rodentia, Muroidea) with comments on functional interpretations. Miscellaneous Publications Museum of Zoology, University of Michigan, 146, 1–43.

    Carleton, M.D. (1980) Phylogenetic relationships of neotomine-peromyscine rodents (Muroidea) and a reappraisal of the dichotomy within New World Cricetinae. Miscellaneous Publications Museum of Zoology, University of Michigan, 157, 1–146.

    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.

    Carnaval, A.C. & Moritz, C. (2008) Historical climate modelling predicts patterns of current biodiversity in the Brazilian Atlantic forest. Journal of Biogeography, 35, 1187–1201.

    Cherem, J.J., Graipel, M.E., Abati, K., Moraes, M. & Moreira, T. (2005) Registro de Abrawayaomys ruschii Cunha e Cruz, 1979 (Rodentia, Sigmodontinae) para o Estado de Santa Catarina, Sul do Brasil. 3 Congresso Brasileiro de Mastozoologia, Resumos, 110.

    Costa, L.P. Pavan, S.E., Leite, Y.R.L. & Fagundes, V. (2007) A new species of Juliomys (Mammalia: Rodentia: Cricetidae) from the Atlantic forest of southeastern Brazil. Zootaxa, 1463, 21–37.

    Cunha, F.L.S. & Cruz, J.F. (1979) Novo gênero de Cricetidae (Rodentia) de Castelo, Espírito Santo, Brasil. Boletim do Museu de Biologia Prof. Mello Leitão, série Zoologia, 96, 1–5.

    D’Elía, G. (2003) Phylogenetics of Sigmodontinae (Rodentia, Muroidea, Cricetidae), with special reference to the akodont group, and with additional comments on historical biogeography. Cladistics, 19, 307–323.

    D’Elía, G., González, E.M. & Pardiñas, U.F.J. (2003) Phylogenetic analysis of sigmodontine rodents (Muroidea), with special reference to the akodont genus Deltamys. Mammalian Biology, 68, 351–364.

    D’Elía, G., Luna, L., González, E.M. & Patterson, B.D. (2006a) On the Sigmodontinae radiation (Rodentia, Cricetidae): An appraisal of the phylogenetic position of Rhagomys. Molecular Phylogenetics and Evolution, 38, 558–564.

    D’Elía, G., Ojeda, A.A., Mondaca, F. & Gallardo, M.H. (2006b). New data of the long-clawed mouse Pearsonomys annectens (Cricetidae, Sigmodontinae) and additional comments on the distinctiveness of Pearsonomys. Mammalian Biology, 71, 39–51.

    D’Elía, G., Pardiñas, U.F.J., Teta, P. & Patton, J.L. (2007) Definition and diagnosis of a new tribe of sigmodontine rodents (Cricetidae: Sigmodontinae), and a revised classification of the subfamily. Gayana, 71, 187–194.

    da Fonseca, G.A.B. & Kierulff, M.C. (1989) Biology and natural history of Brazilian Atlantic Forest small mammals. Bulletin of the Florida State Museum, Biological Sciences, 34, 99–152.

    Day, M.G. (1966) Identification of hair and feather remains in the gut and faeces of stoats and weasels. Journal of Zoology, 148, 201–217.Engel, S.R., Hogan, K.M., Taylor, J.F. & Davis, S.K. 1998. Molecular systematics and paleobiogeography of the South American sigmodontine rodents. Molecular Biology and Evolution, 15, 35–49.

    Finotti, R., Cunha, A. & Cerqueira, R. (2003) Alimentação macroscópica do trato digestivo de Abrawayaomys ruschii. 2 Congresso Brasileiro de Mastozoologia, Resumos, 265.

    Giraudo, A.R., Povedano, H., Belgrano, M.J., U.F.J., Pardiñas, Miquelarena, A., Ligier, D., Krauczuc, E. & Baldo, D. (2002) The state of biodiversity in the Paranaense tropical forest. In: Galindo-Leal, C. & De Gusmão Câmara, I. (Eds.) The Atlantic Forest of South America. Biodiversity status, threats, and outlook. Center for Applied Biodiversity Science at Conservation International, Island Press, Washington, 160–180.

    Gonçalves, P.R., Myers, P., Vilela, J.F. & de Oliveira, J.A. (2007) Systematics of species of the genus Akodon (Rodentia: Sigmodontinae) in southeastern Brazil and implications for the biogeography of the Campos de Altitude. Miscellaneous Publications Museum of Zoology, University of Michigan, 146, 1–24.

    Grazziotin, F.G., Monzel, M., Echeverrigaray, S. & Bonatto, S.L. (2006) Phylogeography of the Bothrops jararaca complex (Serpentes: Viperidae): past fragmentation and island colonization in the Brazilian Atlantic forest. Molecular Ecology, 15, 3969–3982.

    Hershkovitz, P. (1940) A new spiny mouse of the genus Neacomys from Eastern Ecuador. Occasional Papers of the Museum of Zoology, University of Michigan, 419, 1–4.

    Hershkovitz, P. (1955) South American marsh rats genus Holochilus, with a summary of sigmodont rodents. Fieldiana, Zoology, 37, 639–673.

    Hershkovitz, P. (1962) Evolution of Neotropical Cricetine Rodents (Muridae) with special reference to the Phyllotine group. Fieldiana, Zoology, 46, 1–524.

    Hoey, K.A., Wise, R.R. & Adler, G.H. (2004) Ultrastucture of echimyid and murid rodent spines. Journal of Zoology, London, 263, 307–315.

    Lara, M.C., Geise, L. & Schneider, C.J. (2005) Diversification of small mammals in the Atlantic forest of Brazil testing the alternatives. In: Lacey, E.A. & Myers, P. (Eds.) Mammalian diversification: from chromosomes to phylogeography (a celebration of the career of James A. Patton). University of California Publications in Zoology, University of California, Berkeley, 311–331.

    Luna, L. & Patterson, B.D. (2003) A remarkable new mouse (Muridae: Sigmodontinae) from southeastern Peru: with comments on the affinities of Rhagomys rufescens. Fieldiana, Zoology, New Series, 101, 1–24.

    Martínez-Crovetto, R. (1963) Esquema fitogeográfico de la Provincia de Misiones (Argentina) Bonplandia, 1, 171–223.

    Massoia, E. (1988) Presas de Tyto alba en Campo Ramón, departamento Oberá, provincia de Misiones – I. Boletín Científico Asociación para la Protección de la Naturaleza, 7, 4–16.

    Massoia, E. (1993) Los roedores misioneros – 1 – Lista sistemática comentada y geonemia provincial conocida. Boletín Científico Asociación para la Protección de la Naturaleza, 25, 42–51.

    Massoia, E. (1996) Los roedores con pelaje espinoso de la Argentina (Mammalia). Boletín Científico Asociación para la Protección de la Naturaleza, 29, 26–29.

    Massoia, E., Chebez, J.C. & Heinonen Fortabat, S. (1991) Nuevos o poco conocidos cráneos de mamíferos vivientes – 3 – Abrawayaomys ruschi de la provincia de Misiones, República Argentina. Boletín Científico Asociación para la Protección de la Naturaleza, 19, 39–40.

    Moreau, R.E. (1966) The bird faunas of Africa and its islands. Academic Press, New York.

    Musser, G.M. & Carleton, M.D. (2005) Superfamily Muroidea. In: Wilson, D.E. & Reeder, D.M. (Eds.). Mammal species of the world: A taxonomic and geographic reference, 3rd ed. Johns Hopkins University Press, Baltimore, MD., 894–1531.

    Pacheco, V. (2003) Phylogenetic analyses of the Thomasomyini (Muroidea: Sigmodontinae) based on morphological data. Ph.D. dissertation. University of New York, New York, USA.

    Olson, D.M., Dinerstein, E., Wikramanayake, E.D., Burgess,N.D., Powell, G.V.N., Underwood, E.C., D’Amico, J.A., Strand, H.E., Morrison, J.C., Loucks, C.J., Allnutt, T.F., Lamoreux, J.F., Ricketts, T.H., Itoua, I., Wettengel, W.W, Kura, Y. & Kassem, H. (2001) Terrestrial ecoregions of the world: a new map of life on Earth. BioScience, 51, 933–938.

    Pardiñas, U.F.J., Teta, P., D'Elía, G. & Galliari, C. (2008) Rediscovery of Juliomys pictipes (Rodentia: Cricetidae) in Argentina : emended diagnosis, geographic distribution, and insights on genetic structure. Zootaxa, 1758, 29–44.

    Patton, J.L. & da Silva, M.N.F. (1995) A review of the spiny mouse genus Scolomys (Rodentia: Muridae: Sigmodontinae) with the description of a new species from the western Amazon of Brazil. Proceedings of the Biological Society of Washington, 108, 319–337.

    Percequillo, A.R., Gonçalves, P.R. & de Oliveira, J.A. (2004). The rediscovery of Rhagomys rufescens (Thomas, 1886), with a morphological redescription and comments on its systematic relationships based on morphological and molecular (cytochrome b) characters. Mammalian Biology, 69, 238–257.

    Pereira, L.G., Geise, L., Cunha, A.A. & Cerqueira, R. (2008) Abrawayaomys ruschii Cunha & Cruz, 1979 (Rodentia, Cricetidae) no estado do Rio de Janeiro, Brasil. Papéis Avulsos de Zoologia, Museu de Zoologia da Universidade de São Paulo, 48, 33–40.

    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.

    Reig, O.A. (1987) An assessment of the systematics and evolution of the Akodontini, with the description of new fossil species of Akodon (Cricetidae, Sigmodontinae). In: Patterson, B.D. & Timm, R.M. (Eds.). Studies in Neotropical Mammalogy, Fieldiana, Zoology, New Series, 39, 347–399.

    Reig, O. A. & Kirsch J. A. (1988) Descubrimiento del segundo ejemplar conocido y de la presencia en Argentina del peculiar sigmodontino (Rodentia: Cricetidae) Abrawayaomys ruschii Souza Cuña et Cruz. 4 Jornadas Argentinas de Mastozoología, Resúmenes, 80.

    Roy, M.S. (1997) Recent diversification in African greenbuls (Pycnonotidae: Andropadus) supports a montane speciation model. Proceedings of the Royal Society, London, 264, 1337–1344.

    Salazar-Bravo, J. & Yates, T.L. (2007) A new species of Thomasomys (Cricetidae: Sigmodontinae) from central Bolivia. In: Kelt, D.A., Lessa, E.P., Salazar-Bravo, J. & Patton, J.L. (Eds.). The Quintessential Naturalist: Honoring the Life and Legacy of Oliver P. Pearson. University of California Publications in Zoology, 134, 747–774.

    Smith, M.F. & Patton, J.L. (1999) Phylogenetic relationships and the radiation of sigmodontine rodents in South America: Evidence from cytochrome b. Journal of Mammalian Evolution, 6, 89–128.

    Stallings, J.R. (1989) Small mammal inventories in an Eastern Brazilian Park. Bulletin Florida State Museum, Biological Sciences, 34, 153–200.

    Steppan, S. (1995) Revision of the Phyllotini (Rodentia: Sigmodontinae), with a phylogenetic hypothesis for the sigmodontinae. Fieldiana, Zoology, 80, 1–112.

    Voss, R.S. (1988) Systematics 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.

    Voss, R.S. (1991) An introduction to the Neotropical muroid rodent genus Zygodontomys. Bulletin of the American Museum of Natural History, 210, 1–113.

    Voss, R.S. (1993) A revision of the Brazilian muroid rodent genus Delomys with remarks on “thomasomyine” characters. American Museum Novitates, 3073, 1–44.

    Weksler, M. (2003) Phylogeny of Neotropical oryzomyine rodents (Muridae: Sigmodontinae) based on the nuclear IRBP exon. Molecular Phylogenetics and Evolution, 29, 331–349.

    Weksler, M. (2006) Phylogenetic relationships of oryzomine rodents (Muroidea: Sigmodontinae): separate and combined analyses of morphological and molecular data. Bulletin of the American Museum of Natural History, 296, 1–149.