DOCSLIB.ORG

Divergence in Zygodontomys (Rodentia: Sigmodontinae) and Distribution of Amazonian Savannas

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Divergence in Zygodontomys (Rodentia: Sigmodontinae) and Distribution of Amazonian Savannas Journal of Heredity 2009:100(3):322–328 Ó The American Genetic Association. 2008. All rights reserved. doi:10.1093/jhered/esn105 For permissions, please email: [email protected]. Advance Access publication December 9, 2008 Divergence in Zygodontomys (Rodentia: Sigmodontinae) and Distribution of Amazonian Savannas IBELE ONVICINO ABLO ONCALVES OA˜O DE LIVEIRA UIZ LAMARION DE LIVEIRA AND C R. B ,P R. G x ,J A. O ,L F B. O , Downloaded from https://academic.oup.com/jhered/article-abstract/100/3/322/867792 by guest on 06 November 2018 MARGARETE S. MATTEVI From the Programa de Gene´tica, Instituto Nacional de Caˆncer, Rio de Janeiro, Brazil (Bonvicino and Goncxalves); the Laboratory de Biologia e Parasitologia de Mamı´feros Reservato´rios Sivestres, IOC-FIOCRUZ, Rio de Janeiro, Brazil (Bonvicino); the Departamento de Gene´tica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil (Goncxalves); the Setor de Mamı´feros, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil (Oliveira and de Oliveira); and the Laboratory de Pesquisa em Biodiversidade Animal, Universidade Luterana do Brasil (ULBRA), Programa de Po´s-graduacxa˜o em Gene´tica, Canoas, Brazil (Mattevi). Address correspondence to Cibele R. Bonvicino at the address above, or e-mail: [email protected]. Abstract Northern South America presents a diverse array of nonforest or savanna-like ecosystems that are patchily distributed. The distribution of these open habitats has been quite dynamic during Quaternary glacial–interglacial cycles; yet, the relevance of climatically driven vicariance events to the diversification of nonforest Amazonian vertebrates remains poorly known. We analyzed karyologic and mitochondrial DNA sequence data of the genus Zygodontomys, a small cricetid rodent distributed throughout nonforest habitats of northern Amazonia. Samples analyzed represented 4 Brazilian Amazonian localities and 2 French Guiana localities. Karyologic variation among Amazonian Brazilian Zygodontomys populations is high, with, at least, 3 karyomorphotypes. Molecular phylogenetic analyses recovered 3 major clades congruent with known karyotypes, a finding that suggests the existence of 3 species, 2 of which currently undescribed. The French Guiana and Surumu´ clade, identified as Zygodontomys brevicauda microtinus, is characterized by 2n 5 86 and is sister to the clade formed by the 2 nondescribed forms. The Rio Negro–Rio Branco form is characterized by 2n 5 82, and the Ferreira Gomes–Itapoa´ form is characterized by 2n 5 84. The distribution of the 3 Zygodontomys lineages identified is in accordance with the geography of the open vegetation patches in Northern Amazonia, and divergence time estimates relate speciation events to the middle-upper Pleistocene, supporting the prominent role of Quaternary climatically driven vicariance events in the diversification of the genus. Key words: amazonian savanna, phylogeography, Zygodontomys The northern Amazonian region of South America presents Anhuf et al. 2006), the effects of the climatic cycling on the a remarkably diverse array of nonforest or savanna-like diversification of its vertebrates are little known. Morpho- ecosystems that are patchily distributed from Panama to the logical studies of mammalian genera and species complexes Brazilian states of Amapa´, Roraima, and Amazonas. In the endemic to nonforest Amazonian ecosystems suggest northern region of the Brazilian Amazon, these enclaves are a major differentiation between western and eastern groups found intermingled by rainforests or restricted to the highest of populations (Voss 1991), but no further resolution has summits across the Guyanan shield, presenting varying been provided within these regions, specially regarding the levels of geographic isolation. The distribution of these levels of genetic divergence among populations. open habitats has been quite dynamic during the climatic The rodent genus Zygodontomys, a member of the tribe cycles of the Quaternary, with repeated episodes of Oryzomyini sensu stricto (Voss and Carleton 1993; Steppan expansion during glacial periods and retraction on more 1995; Bonvicino et al. 2003), inhabits open vegetation humid interglacials (Haffer 1969; Vanzolini and Williams formations, including anthropogenic ones, in Central Amer- 1970; Haffer 2002). Although northern Amazonia has ica and northern South America (Voss 1991). In Brazil, this received an increasing attention from paleoecologists and species is a typical inhabitant of Amazonian ‘‘campinaranas,’’ geologists (e.g., Bush et al. 2004; Rosseti et al. 2005; a local designation of the grass savanna. The latest 322 Bonvicino et al. Divergence in Zygodontomys and Distribution of Amazonian Savannas comprehensive review of the genus Zygodontomys considered 2) Serra do Araca´, 00°54#05.7$N, 63°26#02.1$W (GPS), only 2 species: Zygodontomys brunneus and Zygodontomys near Igarape´ da Anta, a right-bank affluent of the Rio brevicauda, the latter with 3 subspecies. However, karyologic Araca´, Barcelos: female MN 69077 and male MN 6907; data (Gardner and Patton 1976; Reig et al. 1990) give support 3) Parque Nacional do Virua´, Caracaraı´: 1) Serra do Preto for the recognition of other species mentioned throughout (01°48#57$N61°07#40$W): females MN 70318 and this paper. Brazilian populations have not been allocated 70330; males MN 70316, 70329, 70330, 70336, 70337, to any described taxa and were referred to as Zygodontomys sp. 70347, 70351, 70352, and 70364; 2) Near Road Perdida, (Mattevi et al. 2002; Bonvicino et al. 2003). Parque Nacional do Virua´, Caracaraı´, female MN 70400; Whereas the karyotype of Z. brunneus remains unde- 3) Rio Branco, Campinho (0°57#34.7$S, 61°09#56.8$W): scribed, several chromosomal complements have been MN 70581 and 70582; 4) Lavrado Vista Alegre attributed to Z. brevicauda subspecies, with diploid numbers (01°42#18.1$N, 61°08#13.4$W) MN 70742 and 70747; of 84 or 88 and fundamental numbers ranging from 116 to and 5) Castanhal (01°30#34$N, 60°58#41$W) MN Downloaded from https://academic.oup.com/jhered/article-abstract/100/3/322/867792 by guest on 06 November 2018 118 (Gardner and Patton 1976; Perez-Zapata et al. 1984; 70777; Reig et al. 1990; Bonvicino et al. 2003). Several chromo- 4) Surumu´ (4°10#N and 60°30#W): male MN 65549 and somal complements have been associated with Zygodontomys female MN 65546; 2n 5 86; brevicauda cherriei, with diploid numbers ranging from 82 to 5) Fazenda Teimoso, Ferreira Gomes (01°17#N50°48#W): 84 (Gardner and Patton 1976; Voss 1991). However, the male AN386 and female AN381; 2n 5 84; actual chromosomal complement of this taxon is the one 6) Fazenda Itapoa´, Itapoa´ (km 380 of AP 156 road, reported for the Costa Rica population (Gardner and Patton 01°21#N50°56#W): males AN612 and 615. 1976). The karyotype of Zygodontomys brevicauda microtinus has The vegetation of all sampled areas, except locality 2, not been formally described or illustrated, but Tranier grows on seasonally flooded white sand and is composed of (1976) reported a diploid number of 78 for French Guiana natural grassland around 1-m high and sparse scrub specimens without describing the morphology of the vegetation of up to 3 m in height. Locality 2 is situated at autosomal complement. Other 2 karyotypes have been an altitude of 1300 m, in a tabular plateau of the geological attributed to this taxon but from localities far from its type formation of Mount Roraima, covered with grassland locality (Reig et al. 1990; Gardner and Patton 1976). Brazilian populations of Zygodontomys have, at least, 3 karyotypes reported up to date: the Rio Negro population (Amazonas state) with 2n 5 82 and FN 5 94; a population from Surumu´ (Roraima state) with 2n 5 86 and FN 5 96– 98; and a population from Tartarugalzinho (Amapa´ state) with 2n 5 84 and FN 5 96–98 (Mattevi et al. 2002; Bonvicino et al. 2003). This scenario suggests that the diversity of this genus is underestimated in Brazil, suggesting the existence of several evolutionary lineages. In this paper, we examine whether the geographic isolation of open vegetation enclaves have influenced population- and species-level diversification in the genus Zygodontomys in the northern Brazilian Amazon. Karyomor- photypes and mitochondrial DNA genealogies (23 Zygodontomys specimens) are here used to delineate species limits and phylogeographic patterns, which are mapped onto the distribution of open vegetation formations in northern South America, in an attempt to evaluate possible links between the fragmentation of these formations and the speciation events within Zygodontomys. Figure 1. Geographic provenance of samples analyzed in this study. Brazil, Amazonas state, Barcelos: (1) Igarape´ Materials and Methods Tucunare´ and (2) Serra do Araca´; Roraima state: (3) Caracaraı´ Zygodontomys specimens were collected in 6 Brazilian and (4) Surumu´; Amapa´ state: (5) Ferreira Gomes and (6) localities from the states of Amazonas (localities 1 and 2), Itapoa´; French Guiana: (7) Kourou and (8) Macouria. Black campinaranas Roraima (localities 3 and 4), and Amapa´ (localities 5 and 6, areas delimit , gray area delimits savannas, and Figure 1), as follows: spotted area mangrooves as defined by Brazil (1975) and Olson et al. (2001). White squares are localities of Zygodontomys sp.2 1) Igarape´ Tucunare´, 00°09#72$N, 63°30#72$W [global (2n 5 82 and FN 5 94, this study), black circles are localities of positioning system (GPS)], a right-bank affluent of the Zygodontomys brevicauda microtinus (2n 5 86 and FN 5 96–98, Rio Curuduri in tributaries of the Rio Araca´, a left-bank Mattevi et al. 2002), white circles are localities of Zygodontomys tributary of the middle Rio Negro, Barcelos: female sp.1 (2n 5 84 and FN 5 96–98, Mattevi et al. 2002), and black Museu Nacional (MN) 69027 and male MN 69030; and white circles are localities of sympatry. 323 Journal of Heredity 2009:100(3) vegetation intermingled with riparian forest at margins of approach were also estimated by bootstrap with 1000 creeks and depressions.
Load more

Recommended publications
  • Identification of Leptospira and Bartonella Among Rodents Collected
    RESEARCH ARTICLE Identification of Leptospira and Bartonella among rodents collected across a habitat disturbance gradient along the Inter- Oceanic Highway in the southern Amazon Basin of Peru 1,2 1 1 1 Valerie CortezID *, Enrique Canal , J. Catherine Dupont-Turkowsky , Tatiana Quevedo , a1111111111 Christian Albujar1, Ti-Cheng Chang2, Gabriela Salmon-Mulanovich1,3, Maria C. Guezala- 1 1 2 2 a1111111111 Villavicencio , Mark P. SimonsID , Elisa Margolis , Stacey Schultz-Cherry , a1111111111 VõÂctor Pacheco4, Daniel G. Bausch1,5 a1111111111 1 U.S. Naval Medical Research Unit No. 6, Callao, Peru, 2 St. Jude Children's Research Hospital, Memphis, a1111111111 Tennessee, United States of America, 3 Pontificia Universidad CatoÂlica del Peru, Lima, Peru, 4 Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Lima, Peru, 5 Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, United States of America * [email protected] OPEN ACCESS Citation: Cortez V, Canal E, Dupont-Turkowsky JC, Quevedo T, Albujar C, Chang T-C, et al. (2018) Abstract Identification of Leptospira and Bartonella among rodents collected across a habitat disturbance gradient along the Inter-Oceanic Highway in the southern Amazon Basin of Peru. PLoS ONE 13(10): Background e0205068. https://doi.org/10.1371/journal. The southern Amazon Basin in the Madre de Dios region of Peru has undergone rapid defor- pone.0205068 estation and habitat disruption, leading to an unknown zoonotic risk to the growing commu- Editor: Janet Foley, University of California Davis, nities in the area. UNITED STATES Received: April 4, 2018 Accepted: September 18, 2018 Methodology/Principal findings Published: October 9, 2018 We surveyed the prevalence of rodent-borne Leptospira and Bartonella, as well as potential Copyright: This is an open access article, free of all environmental sources of human exposure to Leptospira, in 4 communities along the Inter- copyright, and may be freely reproduced, Oceanic Highway in Madre de Dios.
    [Show full text]
  • Hantavirus Disease Were HPS Is More Common in Late Spring and Early Summer in Seropositive in One Study in the U.K
    Hantavirus Importance Hantaviruses are a large group of viruses that circulate asymptomatically in Disease rodents, insectivores and bats, but sometimes cause illnesses in humans. Some of these agents can occur in laboratory rodents or pet rats. Clinical cases in humans vary in Hantavirus Fever, severity: some hantaviruses tend to cause mild disease, typically with complete recovery; others frequently cause serious illnesses with case fatality rates of 30% or Hemorrhagic Fever with Renal higher. Hantavirus infections in people are fairly common in parts of Asia, Europe and Syndrome (HFRS), Nephropathia South America, but they seem to be less frequent in North America. Hantaviruses may Epidemica (NE), Hantavirus occasionally infect animals other than their usual hosts; however, there is currently no Pulmonary Syndrome (HPS), evidence that they cause any illnesses in these animals, with the possible exception of Hantavirus Cardiopulmonary nonhuman primates. Syndrome, Hemorrhagic Nephrosonephritis, Epidemic Etiology Hemorrhagic Fever, Korean Hantaviruses are members of the genus Orthohantavirus in the family Hantaviridae Hemorrhagic Fever and order Bunyavirales. As of 2017, 41 species of hantaviruses had officially accepted names, but there is ongoing debate about which viruses should be considered discrete species, and additional viruses have been discovered but not yet classified. Different Last Updated: September 2018 viruses tend to be associated with the two major clinical syndromes in humans, hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary (or cardiopulmonary) syndrome (HPS). However, this distinction is not absolute: viruses that are usually associated with HFRS have been infrequently linked to HPS and vice versa. A mild form of HFRS in Europe is commonly called nephropathia epidemica.
    [Show full text]
  • With Focus on the Genus Handleyomys and Related Taxa
    Brigham Young University BYU ScholarsArchive Theses and Dissertations 2015-04-01 Evolution and Biogeography of Mesoamerican Small Mammals: With Focus on the Genus Handleyomys and Related Taxa Ana Villalba Almendra Brigham Young University - Provo Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Biology Commons BYU ScholarsArchive Citation Villalba Almendra, Ana, "Evolution and Biogeography of Mesoamerican Small Mammals: With Focus on the Genus Handleyomys and Related Taxa" (2015). Theses and Dissertations. 5812. https://scholarsarchive.byu.edu/etd/5812 This Dissertation is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Evolution and Biogeography of Mesoamerican Small Mammals: Focus on the Genus Handleyomys and Related Taxa Ana Laura Villalba Almendra A dissertation submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Duke S. Rogers, Chair Byron J. Adams Jerald B. Johnson Leigh A. Johnson Eric A. Rickart Department of Biology Brigham Young University March 2015 Copyright © 2015 Ana Laura Villalba Almendra All Rights Reserved ABSTRACT Evolution and Biogeography of Mesoamerican Small Mammals: Focus on the Genus Handleyomys and Related Taxa Ana Laura Villalba Almendra Department of Biology, BYU Doctor of Philosophy Mesoamerica is considered a biodiversity hot spot with levels of endemism and species diversity likely underestimated. For mammals, the patterns of diversification of Mesoamerican taxa still are controversial. Reasons for this include the region’s complex geologic history, and the relatively recent timing of such geological events.
    [Show full text]
  • Novltatesamerican MUSEUM PUBLISHED by the AMERICAN MUSEUM of NATURAL HISTORY CENTRAL PARK WEST at 79TH STREET, NEW YORK, N.Y
    NovltatesAMERICAN MUSEUM PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK, N.Y. 10024 Number 3085, 39 pp., 17 figures, 6 tables December 27, 1993 A New Genus for Hesperomys molitor Winge and Holochilus magnus Hershkovitz (Mammalia, Muridae) with an Analysis of Its Phylogenetic Relationships ROBERT S. VOSS1 AND MICHAEL D. CARLETON2 CONTENTS Abstract ............................................. 2 Resumen ............................................. 2 Resumo ............................................. 3 Introduction ............................................. 3 Acknowledgments ............... .............................. 4 Materials and Methods ..................... ........................ 4 Lundomys, new genus ............... .............................. 5 Lundomys molitor (Winge, 1887) ............................................. 5 Comparisons With Holochilus .............................................. 11 External Morphology ................... ........................... 13 Cranium and Mandible ..................... ........................ 15 Dentition ............................................. 19 Viscera ............................................. 20 Phylogenetic Relationships ....................... ...................... 21 Character Definitions ................... .......................... 23 Results .............................................. 27 Phylogenetic Diagnosis and Contents of Oryzomyini ........... .................. 31 Natural History and Zoogeography
    [Show full text]
  • Ev8n3p232.Pdf
    ENZOOTIC RODENT LEISHMANIASIS IN TRINIDAD, WEST INDIES’ Elisha S. Tikasingh, B.Sc., M.A., Ph.D.’ Human cutaneous leishmaniasis is a zoonotic drsease widely distributed in Central and South America. Small mammals play important roles in the natural history of the disease. This article attempts to define more precisely the roles that these mammals play in the ecology of the parasite. Introduction It is difficult to explain the sudden appear- ance of the disease after 1925 and its sudden Human cutaneous leishmaniasis is widely disappearance after 1930, but there may have distributed in several countries of Central and been significant reporting irregularities. South America. In recent years, workers in During studies on arboviruses, Worth, et al. Mexico, Belize, Panama, and Brazil have shown (24) observed lesions at the base of the tail in quite convincingly that the disease exists as a specimens of Marmosa spp., Heteromys anoma- zoonosis which only accidentally infects man lus and Zygodontomys brevicauda caught in with the parasite, and that wild animals (espe- Bush Bush Forest, Trinidad, and suggested that cially rodents) serve as the primary hosts. Three these lesions were similar to those caused by excellent papers have recently been published Leishmania mexicana in rodents of Belize (14). reviewing both the epidemiology in these coun- This was the first suggestion that rodent leish- tries (II) and taxonomic problems (12, 13). maniasis might be present in Trinidad. It was Although Ashcroft’s survey of helminthic not until 1968, however, that Tikasingh (IS) and protozoan infections of the West Indies (1) reported the presence of amastigotes in lesions does not mention the existence of leishmaniasis found on tails of the rice rat Oryzomys in Trinidad, the human disease seems to have laticeps3 and two murine opossums (Marnwsa been recognized there in the late 1920’s.
    [Show full text]
  • List of 28 Orders, 129 Families, 598 Genera and 1121 Species in Mammal Images Library 31 December 2013
    What the American Society of Mammalogists has in the images library LIST OF 28 ORDERS, 129 FAMILIES, 598 GENERA AND 1121 SPECIES IN MAMMAL IMAGES LIBRARY 31 DECEMBER 2013 AFROSORICIDA (5 genera, 5 species) – golden moles and tenrecs CHRYSOCHLORIDAE - golden moles Chrysospalax villosus - Rough-haired Golden Mole TENRECIDAE - tenrecs 1. Echinops telfairi - Lesser Hedgehog Tenrec 2. Hemicentetes semispinosus – Lowland Streaked Tenrec 3. Microgale dobsoni - Dobson’s Shrew Tenrec 4. Tenrec ecaudatus – Tailless Tenrec ARTIODACTYLA (83 genera, 142 species) – paraxonic (mostly even-toed) ungulates ANTILOCAPRIDAE - pronghorns Antilocapra americana - Pronghorn BOVIDAE (46 genera) - cattle, sheep, goats, and antelopes 1. Addax nasomaculatus - Addax 2. Aepyceros melampus - Impala 3. Alcelaphus buselaphus - Hartebeest 4. Alcelaphus caama – Red Hartebeest 5. Ammotragus lervia - Barbary Sheep 6. Antidorcas marsupialis - Springbok 7. Antilope cervicapra – Blackbuck 8. Beatragus hunter – Hunter’s Hartebeest 9. Bison bison - American Bison 10. Bison bonasus - European Bison 11. Bos frontalis - Gaur 12. Bos javanicus - Banteng 13. Bos taurus -Auroch 14. Boselaphus tragocamelus - Nilgai 15. Bubalus bubalis - Water Buffalo 16. Bubalus depressicornis - Anoa 17. Bubalus quarlesi - Mountain Anoa 18. Budorcas taxicolor - Takin 19. Capra caucasica - Tur 20. Capra falconeri - Markhor 21. Capra hircus - Goat 22. Capra nubiana – Nubian Ibex 23. Capra pyrenaica – Spanish Ibex 24. Capricornis crispus – Japanese Serow 25. Cephalophus jentinki - Jentink's Duiker 26. Cephalophus natalensis – Red Duiker 1 What the American Society of Mammalogists has in the images library 27. Cephalophus niger – Black Duiker 28. Cephalophus rufilatus – Red-flanked Duiker 29. Cephalophus silvicultor - Yellow-backed Duiker 30. Cephalophus zebra - Zebra Duiker 31. Connochaetes gnou - Black Wildebeest 32. Connochaetes taurinus - Blue Wildebeest 33. Damaliscus korrigum – Topi 34.
    [Show full text]
  • Cricetidae: Rodentia)
    UNIVERSIDADE FEDERAL DE MINAS GERAIS INSTITUTO DE CIÊNCIAS BIOLÓGICAS DEPARTAMENTO DE BIOLOGIA GERAL PROGRAMA DE PÓS-GRADUAÇÃO EM GENÉTICA DISSERTAÇÃO DE MESTRADO Genômica Comparativa dos Roedores Akodontinos Akodon cursor, A. montensis e Necromys lasiurus (Cricetidae: Rodentia) ORIENTADA: Naiara Pereira de Araújo ORIENTADORA: Dra. Marta Svartman COORIENTADOR: Dr. Gustavo Campos e Silva Kuhn BELO HORIZONTE Fevereiro – 2014 Naiara Pereira de Araújo Genômica Comparativa dos Roedores Akodontinos Akodon cursor, A. montensis e Necromys lasiurus (Cricetidae: Rodentia) Dissertação apresentada ao Programa de Pós- Graduação em Genética da Universidade Federal de Minas Gerais como pré-requisito obrigatório para a obtenção do título de Mestre em Genética, área de concentração “Genética Evolutiva e de Populações”. Orientadora: Dra. Marta Svartman Coorientador: Dr. Gustavo Campos e Silva Kuhn BELO HORIZONTE Fevereiro – 2014 043 Araújo, Naiara Pereira de. Genômica comparativa dos roedores Akodontinos Akodon cursor, A. montensis e Necromys Iasiurus (Cricetidae : Rodentia) [manuscrito] / Naiara Pereira de Araújo. – 2014. 82 f.: il. ; 29,5 cm. Orientadora: Marta Svartman. Coorientador: Gustavo Campos e Silva Kuhn. Dissertação (mestrado) – Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas. 1. Cariótipos – Teses. 2. Genômica comparativa. 3. Hibridação genética. 4. Akodontini (Tribo). 5. Seqüências teloméricas. 6. Retroelementos. 7. Genética – Teses. 8. Genética de populações – Teses. I. Svartaman, Marta. II. Kuhn, Gustavo Campos e Silva. III. Universidade Federal de Minas Gerais. Instituto de Ciências Biológicas. IV. Título. CDU: 575 Dedico à minha querida mãe, à minha irmã e ao meu grande amor. Se eu fosse um rato eu me esconderia no lixo Se eu fosse um rato eu não sentiria pena dos “humanos” Se eu fosse um rato eu não pensaria Se eu fosse um rato eu não sofreria Se eu fosse um rato eu viveria sem ouvir os humanos Se eu fosse um rato eu não teria pesadelos dormindo e nem acordado Mas, infelizmente eu sou um homem e tenho que conviver com os meus.
    [Show full text]
  • Redalyc.SUPERNUMERARY TEETH in Necromys Lasiurus (RODENTIA
    Mastozoología Neotropical ISSN: 0327-9383 [email protected] Sociedad Argentina para el Estudio de los Mamíferos Argentina Simões Libardi, Gustavo; Reis Percequillo, Alexandre SUPERNUMERARY TEETH IN Necromys lasiurus (RODENTIA, CRICETIDAE): THE FIRST RECORD IN SIGMODONTINAE Mastozoología Neotropical, vol. 21, núm. 2, 2014, pp. 219-229 Sociedad Argentina para el Estudio de los Mamíferos Tucumán, Argentina Available in: http://www.redalyc.org/articulo.oa?id=45732861003 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Mastozoología Neotropical, 21(2):219-229, Mendoza, 2014 Copyright ©SAREM, 2014 Versión impresa ISSN 0327-9383 http://www.sarem.org.ar Versión on-line ISSN 1666-0536 Artículo SUPERNUMERARY TEETH IN Necromys lasiurus (RODENTIA, CRICETIDAE): THE FIRST RECORD IN SIGMODONTINAE Gustavo Simões Libardi* and Alexandre Reis Percequillo Departamento de Ciências Biológicas, Escola Superior de Agricultura “Luiz de Queiroz”. Universidade de São Paulo, Av. Pádua Dias, 11, Caixa Postal 9, 13418-900, Piracicaba, São Paulo, Brazil [correspondence: Alexandre Percequillo <[email protected]>]. * Present address: Unidad de Investigación Diversidad, Sistemática y Evolución, Centro Nacional Patagónico, Boulevard Almirante Brown 2915, Casilla de Correo 128, 9120 Puerto Madryn, Chubut, Argentina. ABSTRACT. There are several kinds of anomalies related to the teeth reported in mammals, and one of them is known as supernumerary teeth and is commonly noticed in the literature, being reported in nearly all orders of mammals. Here, we report the occurrence of supernumerary molars in the sigmodontine rodent Necromys lasiurus, a common and widespread small rodent of tribe Akodontini.
    [Show full text]
  • Mammalia, Rodentia, Sigmodontinae Wagner, 1843: New Locality Records, Filling Gaps and Geographic Distribution Maps from La Rioja Province, Northwestern Argentina
    ISSN 1809-127X (online edition) © 2011 Check List and Authors Chec List Open Access | Freely available at www.checklist.org.br Journal of species lists and distribution N Mammalia, Rodentia, Sigmodontinae Wagner, 1843: New ISTRIBUTIO maps from La Rioja province, northwestern Argentina D Locality records, filling gaps and geographic distribution 1* 2 2 1 RAPHIC J. Pablo Jayat , Pablo E. Ortiz , Rodrigo González , Rebeca Lobo Allende and M. Carolina Madozzo G 2 EO Jaén G N O 1 Universidad Nacional de Chilecito, Instituto de Ambientes de Montaña y Regiones Áridas (IAMRA). Ruta Los Peregrinos s/n. CP F5360CKB Chilecito, La Rioja, Argentina. OTES 2 Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Cátedra de Paleontología. Miguel Lillo 205. 4000 San N Miguel de Tucumán, Tucumán, Argentina. * Corresponding author. E-mail: [email protected] Abstract: Sigmodontine rodents are well represented in northwestern Argentina, but information regarding their distribution in La Rioja is scarce. We add new information for seven species from seven localities in the Famatina range. Neotomys ebriosus in La Rioja. The collection locality is unusual for this species because of its low altitude and xeric conditions. Other notable resultsThese new include records the secondwere obtained record of using Abrothrix both captures andinus and ofowl the pellet genus analysis. Oligoryzomys We cite at the the first province. record of Pearson 1958; Hershkovitz 1962; Myers 1989; Jayat et al. small to medium-sized rodents with a predominantly 2010). SouthThe American sigmodontines distribution are a highly(D’Elía diversified 2003). This group group of Captured specimens were recorded in the personal is well represented in northwestern Argentina (NWA), catalogue of the two lead authors (JPJ, PEO), and voucher with approximately 30% of the mammals in the region specimens were deposited at the Museo Argentino de belonging to this taxon (Jayat et al.
    [Show full text]
  • Redalyc.HOME RANGE of MARSH RATS, Holochilus Sciureus, A
    Interciencia ISSN: 0378-1844 [email protected] Asociación Interciencia Venezuela Eiris, Gabriela C.; Barreto, Guillermo R. HOME RANGE OF MARSH RATS, Holochilus sciureus, A RODENT PEST IN RICE FIELDS OF VENEZUELA Interciencia, vol. 34, núm. 6, junio, 2009, pp. 400-405 Asociación Interciencia Caracas, Venezuela Available in: http://www.redalyc.org/articulo.oa?id=33911405005 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative HOME RANGE OF MARSH RATS, Holochilus sciureus, A RODENT PEST IN RICE FIELDS OF VENEZUELA Gabriela C. Eiris and Guillermo R. Barreto SUMMARY Radio tracking techniques were used to determine the home tours, fixed kernel and adaptive kernel. Home ranges of males range of marsh rats Holochilus sciureus in rice fields of the and females ranged between 0.6 and 1.3ha depending on the Guárico River Irrigation System, Venezuela, in order to study method of estimation. Male-female range overlap and possible movement patterns of tropical rodents and provide information agonistic interactions between males, suggest male territoriality for the management of this agricultural pest. After being cap- and a polygynic mating system. Males showed greater motility tured using Tomahawk traps, ten adult rats were equipped with than females. The results also reveal relationships between these radio-transmitters and tracked during the 2004 dry season be- rodent movements and environmental changes produced within tween 18:00 and 6:00. Home ranges were estimated based on rice plantations.
    [Show full text]
  • Cricetidae: Sigmodontinae) with an Updated Summary of Valid Tribes and Their Generic Contents
    Occasional Papers Museum of Texas Tech University Number 338 15 July 2016 DESCRIPTION OF A NEW TRIBE OF SIGMODONTINE RODENTS (CRICETIDAE: SIGMODONTINAE) WITH AN UPDATED SUMMARY OF VALID TRIBES AND THEIR GENERIC CONTENTS JORGE SALAZAR-BRAVO, ULYSES F. J. PARDIÑAS, HORACIO ZEBALLOS, AND PABLO TETA ABSTRACT We provide a formal recognition to a tribal level clade composed of Andinomys and Puno- mys, two extant sigmodontine genera consistently and repeatedly recovered in the phylogenetic analyses of molecular and morphological data. As currently recognized, this tribe is distributed in middle to high elevations in the Andes of Bolivia, Peru, northern Chile, and northwestern Argentina in habitats that range from high elevation grasslands and ecotonal areas to dry Puna. Within this new clade, Punomys appears as the more specialized member as it is fully restricted to rocky outcrops and their immediate surrounding areas at elevations above 4400 m on both sides of the Altiplano. In contrast, Andinomys occupies a broad elevational range (500–4000 m) and multiple habitats, from subtropical mountain forests and semiarid Puna and Prepuna to high altitudinal grasslands. Both taxa share a number of possible synapomorphies (e.g., presence of caudal enlargement of the post-zygapophysis in the second and eighth thoracic vertebrates, unilocular-hemiglandular stomachs with a large corpus and deep incisura angularis, and very similar chromosomal complements) and other diagnostic morphological features. The supratribal phylogenetic relationships of the taxon here named are not resolved even with the moderate amount of molecular data now available. In addition, we present a revised classification for the Sigmodontinae and comment on the content and context of this unique radiation of the Cricetidae.
    [Show full text]
  • Phylogeographic Structure and Karyotypic Diversity of the Brazilian Shrew Mouse (Blarinomys Breviceps, Sigmodontinae) in the Atlantic Forest
    Original Article Cytogenet Genome Res 2012;138:19–30 Accepted: June 12, 2012 DOI: 10.1159/000341887 by M. Schmid Published online: August 18, 2012 Phylogeographic Structure and Karyotypic Diversity of the Brazilian Shrew Mouse ( Blarinomys breviceps , Sigmodontinae) in the Atlantic Forest a c e f e K. Ventura Y. Sato-Kuwabara V. Fagundes L. Geise Y.L.R. Leite e d a b L.P. Costa M.J.J. Silva Y. Yonenaga-Yassuda M.T. Rodrigues a b D e p a r t a m e n t o s d e Genética e Biologia Evolutiva and Zoologia, Instituto de Biociências, Universidade de c São Paulo, Departamento de Anatomia Patológica, Fundação Antônio Prudente, Hospital A. C. Camargo, d e Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, Departamento de Ciências Biológicas, f Centro de Ciências Humanas e Naturais, Universidade Federal do Espírito Santo, Vitória, and Departamento de Zoologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil Key Words structured clades, northeastern and southeastern with pair- -B chromosomes ؒ Cytochrome b ؒ Cytogenetics ؒ wise sequence divergences among specimens varying be -Fluorescent in situ hybridization ؒ Mitochondrial DNA ؒ tween 4.9 and 8.4%. Eight distinct karyomorphs are de Rodentia scribed: (A) 2n = 52 (50A, XX), (B) 2n = 52 (48A, XY+2Bs), (C) 2n = 45 (42A, XY+1B), (D) 2n = 43 (37A, XX+4Bs), (E) 2n = 37 (34A, XY+1B), (F) 2n = 34 (32A, XX), (G) 2n = 31 (27A, XX+2Bs), Abstract (H) 2n = 28 (26A, XY), all with the same number of autosomal Blarinomys breviceps possesses cryptic and burrowing habits arms (FN A = 50).
    [Show full text]