DOCSLIB.ORG

Infectious Disease Reports 2017; Volume 9:6900

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Infectious Disease Reports 2017; Volume 9:6900 Infectious Disease Reports 2017; volume 9:6900 Hantavirus Pulmonary Syndrome (HPS) Rodent(s) involved Deer mouse (Peromyscus maniculatus), Cotton rat (Sigmodon Hispidus), Rice rat (Oryzomys palustris), White-footed mouse (Peromyscus leucopus) Agent Virus Where the disease occurs Throughout most of North and South America How the disease spreads • Breathing in dust that is contaminated with rodent urine or droppings • Direct contact with rodents or their urine and droppings • Bite wounds, although this does not happen frequently Hemorrhagic Fever with Renal Syndrome Rodent(s) involved Striped field mouse (Apodemus agrarius), brown or Norway rat (Rattus norvegicus), bank vole (Clethrionomys glareolus), yellow-necked field mouse (Apodemus flavicollis) Agent Virus Where the disease occurs Primarily in eastern Asia, Russia, Korea, Scandinavia, western Europe, and the Balkans How the disease spreads • Breathing in dust that is contaminated with rodent urine or droppings • Direct contact with rodents or their uring and droppings • Bite wounds, although this does not happen frequently • The disease may spread through direct contact from person to person, but it is extremely rare Lassa Fever Rodent(s) involved Multi-mammate rat (Mastomys natalensis species complex) Agent Virus Where the disease occurs West Africa How the disease spreads • Breathing in dust that is contaminated with rodent urine or droppings • Direct contact with rodents or their urine and droppings • Eating food that is contaminated with rodent urine or droppings • Bite wounds, although this does not happen frequently • The disease may spread through direct contact from person to person [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 Leptospirosis Rodent(s) involved Rodents and other animals Agent Bacteria Where the disease occurs Worldwide How the disease spreads • Eating food or drinking water contaminated with urine from infected animals • Contact through the skin or mucous membranes (such as inside the nose) with water or soil that is contaminated with the urine from infected animals Lymphocytic Chorio-meningitis (LCM) Rodent(s) involved House mouse (Mus musculus) Agent Virus Where the disease occurs Worldwide How the disease spreads • Breathing in dust that is contaminated with rodent urine or droppings • Direct contact with rodents or their urine and droppings • Bite wounds, although this does not happen frequently Omsk Hemorrhagic Fever Rodent(s) involved Muskrats and possibly narrow-skulled voles Agent Virus Where the disease occurs Western Siberia How the disease spreads • Direct contact with infected animal • Bite from an infected tick Plague Rodent(s) involved Wild rodents, including rock squirrels, prarie dogs, wood rats, fox squirrels and other species of ground squirrels and chipmunks [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 Agent Bacteria Where the disease occurs Western US, South America, Africa, Asia How the disease spreads • Bite of an infected flea • Direct contact with infected animal Rat-Bite Fever Rodent(s) involved Rats and possibly mice Agent Bacteria Where the disease occurs Worldwide; Streptobacillus moniliformis in North America and Europe; Spirillum minue in Asia and Africa How the disease spreads • Bite or scratch wound from an infected rodent, or contact with a dead rodent • Eating or drinking food or water that is contaminated by rat feces. Salmonellosis Rodent(s) involved Rats and mice Agent Bacteria Where the disease occurs Worldwide How the disease spreads • Eating or drinking food or water that is contaminated by rat feces South American Arenaviruses (Argentine hemorrhagic fever, Bolivian hemorrhagic fever, Sabiá-associated hemorrhagic fever, Venezuelan hemorrhagic fever) and Tularemia Rodent(s) involved Cane rat (Zygodontomys brevicauda), drylands vesper mouse, (Calomys musculinus), large vesper mouse (Calomys callosus) Agent Virus Where the disease occurs South America: parts of Argentina, Bolivia, Venezuela and Brazil How the disease spreads • Breathing in dust that is contaminated with rodent urine or droppings [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 • Direct contact with rodents or their urine and droppings • Bite wounds, although this does not happen frequently • The disease may rarely spread through direct contact from person to person Babesiosis Rodent(s) involved Deer mice and voles Agent Parasite Vectors Tick How the disease spreads • Bite from an infected tick Colorado Tick Fever Rodent(s) involved Deer mouse, bushy-tailed woodrat, ground squirrel, porcupine, chipmunk Agent Virus Vectors Tick How the disease spreads • Bite from an infected tick Leishmaniasis Rodent(s) involved Wild woodrat Agent Parasite Vectors Sand fly How the disease spreads • Bite from an infected sand fly Anaplasmosis Rodent(s) involved Deer mouse, dusky-footed woodrat, Mexican woodrat, white-footed mouse Agent Bacteria [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 Vectors Tick How the disease spreads • Bite from an infected tick La Crosse Encephalitis Rodent(s) involved Eastern chipmunk and tree squirrel Agent Virus Vectors Mosquito How the disease spreads • Bite from an infected mosquito Lyme Disease Rodent(s) involved Peromyscus spp. (white-footed mouse) in the northeastern and mid-western USA, and other rodents (tree squirrel) in the western USA Agent Bacteria Vectors Tick How the disease spreads • Bite from an infected tick Murine Typhus Rodent(s) involved Rats Agent Bacteria Vectors Flea or mite How the disease spreads • Bite from an infected flea or mite Omsk Hemorrhagic Fever [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 Rodent(s) involved Muskrat Agent Virus Vectors Tick How the disease spreads • Bite from an infected tick Powassan Virus Rodent(s) involved Marmot, sciurid rodents (squirrel family), groundhog Agent Virus Vectors Tick How the disease spreads • Bite from an infected tick Scrub Typhus Rodent(s) involved Rats Agent Bacteria Vectors Mite How the disease spreads • Bite from an infected mite Rickettsial pox Rodent(s) involved Mice Agent Bacteria Vectors Mite How the disease spreads • Bite from an infected mite [Infectious Disease Reports 2017; 9:6900] Infectious Disease Reports 2017; volume 9:6900 Relapsing Fever Rodent(s) involved Wild rodents Agent Bacteria Vectors Tick How the disease spreads • Bite from an infected tick Rocky Mountain Spotted Fever Rodent(s) involved Wild rodents Agent Bacteria Vectors Tick How the disease spreads • Bite from an infected tick Sylvatic Typhus, Tularemia, Plague and West Nile Encephalitis Rodent(s) involved Flying squirrel Agent Bacteria Vectors Flea, mite, louse How the disease spreads • Bite from an infected flea or mite • Contact of broken skin or wound with infected flea, mite, louse or their droppings or inhaling their aerosolized feces [Infectious Disease Reports 2017; 9:6900] .
Load more

Recommended publications
  • Repositiorio | FAUBA | Artículos De Docentes E Investigadores De FAUBA
    Biodivers Conserv (2011) 20:3077–3100 DOI 10.1007/s10531-011-0118-9 REVIEW PAPER Effects of agriculture expansion and intensification on the vertebrate and invertebrate diversity in the Pampas of Argentina Diego Medan • Juan Pablo Torretta • Karina Hodara • Elba B. de la Fuente • Norberto H. Montaldo Received: 23 July 2010 / Accepted: 15 July 2011 / Published online: 24 July 2011 Ó Springer Science+Business Media B.V. 2011 Abstract In this paper we summarize for the first time the effects of agriculture expansion and intensification on animal diversity in the Pampas of Argentina and discuss research needs for biodiversity conservation in the area. The Pampas experienced little human intervention until the last decades of the 19th century. Agriculture expanded quickly during the 20th century, transforming grasslands into cropland and pasture lands and converting the landscape into a mosaic of natural fragments, agricultural fields, and linear habitats. In the 1980s, agriculture intensification and replacement of cattle grazing- cropping systems by continuous cropping promoted a renewed homogenisation of the most productive areas. Birds and carnivores were more strongly affected than rodents and insects, but responses varied within groups: (a) the geographic ranges and/or abundances of many native species were reduced, including those of carnivores, herbivores, and specialist species (grassland-adapted birds and rodents, and probably specialized pollinators), sometimes leading to regional extinction (birds and large carnivores), (b) other native species were unaffected (birds) or benefited (bird, rodent and possibly generalist pollinator and crop-associated insect species), (c) novel species were introduced, thus increasing species richness of most groups (26% of non-rodent mammals, 11.1% of rodents, 6.2% of birds, 0.8% of pollinators).
    [Show full text]
  • Experimental Assessment of Rodent Control on Two Poultry Farms of Central Argentina
    © 2009 Poultry Science Association, Inc. Experimental assessment of rodent control on two poultry farms of central Argentina 1 2 3 I. E. Gómez Villafañe,*† F. O. Miñarro ,* L. Valenzuela,* and D. N. Bilenca*† Downloaded from * Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 4° piso, Pab. II, Ciudad Universitaria (C1428EHA), Buenos Aires, Argentina; and † Consejo Nacional de Investigaciones Científicas, Avda. Rivadavia 1917, CP C1033AAJ, Cdad. de Buenos Aires, Argentina http://japr.oxfordjournals.org/ Primary Audience: Flock Supervisors, Researchers, Veterinarians SUMMARY We experimentally assessed the effect of controlling vegetation height along farm perimeters at Sistema de Bibliotecas y Información Universidad Buenos Aires on August 6, 2015 on the abundance of rodents in 2 broiler poultry farms in central Argentina. We carried out an experimental design based on the before-after–control-impact method. After vegetation treat- ments, there was a significant decrease in rodent abundance at the perimeter of the farm with control of vegetation height because of the reduction of the Pampean grassland mouse Akodon azarae. In poultry houses, there was a significant decrease in rodent abundance on nonaffected farms because of the reduction of the commensal house mouse Mus musculus domesticus, pos- sibly because of a major collocation of rodenticide. Our results indicate that both the control of vegetation growth at the perimeters and the appropriate timing of rodenticide applications are effective measures for rodent control on broiler poultry farms when both control measures are applied simultaneously. We achieved effective rodent control through an understanding of the habitat use and population dynamics of the species involved and the characteristics of the area where the control program would be applied.
    [Show full text]
  • Cytogenetics of Some Mammal Species from Central
    CYTOGENETICS OF SOME MAMMAL SPECIES FROM CENTRAL ARGENTINA by SERGIO I. TIRANTl, B.S. A THESIS IN ZOOLOGY Submitted to the Gradúate Faculty of Texas Tech University in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE Approved August, 1996 ^f5 'f\\iV 30- Ho i^'í> "h Copyright 1996, Sergio I. Tiranti ACKNOWLEDGMENTS My special thanks go to Robert J. Baker, my committee chairman, for his encouragement and support throughout my stay at Texas Tech. Committee members Robert D. Bradley and Michael R. Willig, offered comments and suggestions that benefited the final outcome of this thesis. Portions of this thesis were reviewed by John Bickham, Meredith J. Hamilton, Steve Kasper, Karen McBee and Lara E. Wiggins, thus contributing to its improvement. My work in La Pampa Province, Argentina, was supported by the Subsecretaría de Cultura, where Norma Durango, Gustavo Siegenthaler and Eduardo Fiorucci contributed in many ways to the accomplishment of this research project. Numerous localities visited in this study were sampled as part of La Pampa Province Vertébrate Survey. My stay at TTU is supported in part by the Dirección Nacional de Cooperación Internacional, Ministerio de Cultura y Educación, Argentina and the Universidad Nacional de La Pampa, Argentina. Finally, I am heartedly indebted to my parents, Iván and Irene, for their neverending encouragement and support. 11 TABLE OF CONTENTS ACKNOWLEDGMENTS ü ABSTRACT v LIST OF TABEES vi LIST OF FIGURES vii CHAPTER I. INTRODUCTION 1 II. THE KARYOTYPE OFMYQTIS.LEYIS (CHIROPTERA, VESPERTILIONIDAE). 7 Introduction...... 7 Material and Methods . 7 Results and Discussion .... 9 III. CHROMOSOMAL POLYMORPHISM VARL\TION IN THE SCRUB MOUSE AKODON MOLINAE (RODENTL\: SIGMODONTINAE) IN CENTRAL ARGENTINA 11 Abstract.
    [Show full text]
  • Museum of the Smithsonian Institution, and Consisting'mainly of Specimens Collected by the Various Government Expeditions During the Preceding Four Or Five Years
    ARTICLE XX.-Notes on New or Little-known North American Mammals, based on recent adiditions to thle Collection of Afam- mals in the American AMuseum of Natural History. By J. A. ALLEN. During the last four years about 3000 skins of small mammals, in most cases accompanied by their skulls, have been added to the collection of the American Museum of Natural History. These specimens represent new material, in most cases collected ex- pressly for this Muiseum. Several of the more important col- lections received have been made the subject of special papers, already published in this Bulletin. Much of the remaining material has, however, not been critically examined until within the last few months; the more important results of this examina- tion are embodied in the present paper. The last five years have been eventful in the history of North American mammalogy, following as they do a considerable period of comparative inactivity in this important field. In I857 was published the great work of the late Prof. S. F. Baird on North American Mammals, forming Volume VIII of the "Reports of Explorations and Surveys to ascertain the most practicable and economical Route for a Railroad from the Mississippi River to the Pacific Ocean," based on the material then extant in the Museum of the Smithsonian Institution, and consisting'mainly of specimens collected by the various Government expeditions during the preceding four or five years. The material availab4e for this great work consisted of less than 3000 specimens, a large proportion of which were of very poor quality when compared with the material gathered within the last few years.
    [Show full text]
  • Check List and Authors Chec List Open Access | Freely Available at Journal of Species Lists and Distribution
    ISSN 1809-127X (online edition) © 2010 Check List and Authors Chec List Open Access | Freely available at www.checklist.org.br Journal of species lists and distribution Mammalia, Estação Ecológica do Panga, a Cerrado PECIES S protected area in Minas Gerais state, Brazil OF 1,2* 3 3 3 ISTS Emilio M. Bruna , Juliane Fernandes Guimarães , Cauê T. Lopes , Polyanna Duarte , Ana Cláudia L Lemos Gomes 3, Sônia Cristina S. Belentani 4, Renata Pacheco 3, Kátia G. Facure 5, Frederico G. Lemos 6 and Heraldo L. Vasconcelos 3 1 University of Florida, Department of Wildlife Ecology and Conservation. PO Box 110430. Gainesville, FL 32611-0430, USA. 2 University of Florida, Center for Latin American Studies. PO Box 115531. Gainesville, FL 32611-0430, USA. 3 Universidade Federal de Uberlândia, Instituto de Biologia. C.P. 593. CEP 38400-902. Uberlândia, MG, Brazil. 4 Khorion Consultoria Ambiental LTDA. Rua Antônio Dias, 770, Jardim. São Marco. CEP 15081-470. São José do Rio Preto, SP, Brazil. 5 Universidade Federal de Uberlândia, Faculdade de Ciências Integradas do Pontal. Avenida José João Dib, 2545. CEP 38302-000. Ituiutaba, MG, Brazil. 6 Programa de Conservação Mamíferos do Cerrado, Universidade Federal de Goiás, Campus Catalão, Departamento de Ciências Biológicas. Avenida Lamartine P. Avelar, 1120, Setor Universitário. CEP 75704-020. Catalão, Goiás, Brazil, * Corresponding author. E-mail: [email protected] Abstract: We present a species list of the mammals of the Estação Ecológica do Panga, a 404 ha Cerrado reserve in Minas Gerais state, Brazil. Using methods ranging from camera traps to direct observations, we documented 46 species in the reserve.
    [Show full text]
  • The Ecology of New World Rodent Borne Hemorrhagic Fevers
    THE ECOLOGY OF NEW WORLD RODENT BORNE HEMORRHAGIC FEVERS DARJN S. CARROLL , Centers for Disease Control and Prevention , National Centers for Infectious Diseases , Special Pathogens Branch , Atlanta , GA 30333 , USA EMILY JENTES , Centers for Disease Control and Prevention , National Centers for Infectious Diseases , Special Pathogens Branch , Atlanta , GA 30333, USA JAMES N. MILLS , Centers for Disease Control and Prevention , National Centers for Infectious Diseases, Special Pathogens Branch , Atlanta , GA 30333 , USA Abstract: Few, if any, human settlements are free of peridomestic rodent populations. The threat of rodent borne zoonotic diseases has been widely recognized since the bubonic plague outbreaks of the Middle Ages . In the last decades, outbreaks of human disease caused by the rodent borne hemorrhagic fever viruses , the arenaviruses (family Arenaviridae), and the hantaviruses (family Bunyaviridae, genus Hantaviru s) have again generated interest in the general public and scientific community regarding the biology of these types of diseases. Recent studie s have identified more than 30 new members of these two groups of viruses. Most are associated with rodents in the family Muridae and many are known to be pathogenic. Ongoing studies are investigating aspects of the ecology and systematics of these viruses and their reservoirs . Ecological studies are currently examining modes of transmission between members of the host species , and environmental factors associated with increased frequency of infection. Systematic research is identifying patterns of co-evolution between the viruses and their hosts. The overall goal of these research efforts is develop predictive models that will identify times and places of increased risk and. therefore provide an opportunity for risk reduction in these areas.
    [Show full text]
  • Less Frequently Used Species
    1. Title Slide LESS FREQUENTLY USED LABORATORY ANIMALS John N. Norton, D.V.M., Ph.D. Director, Division of Laboratory Animal Resources Duke University Medical Center CLASS: MAMMALIA ORDER: RODENTIA 2. Family: Cricetidae Calomys callosus – Vesper Mouse (3 other species) • South America • weight 30-38 gm • high fertility rate with gestation 25 days and litter size 3-5 • free from common latent murine viruses • low water intake • low-crowned cheek teeth are distinguishing from others in Family Research Uses • primary vertebrate reservoir for Machupo Virus (the etio-logical agent of Bolivian Hemorrhagic Fever) 3,4. gross- Dicrostonyx stevensoni - collared lemming - only rodent that changes color • Alaska and Arctic • weight 70 gm • gestation 20-22 days with litter size 3-4 • white coloration in winter, grayish in summer Research Uses • high Brucella suis susceptibility • develop atherosclerosis and high serum cholesterol on atherogenic diet • spontaneous malignant mammary tumors (D. groenlandicus ) 5. Microtus sp. – Voles, Meadow Mice (44 species) Microtus ochrogaster - Prairie Vole (found in Midwest U.S.) • North America, Central America, and Eurasia • weight 115 gm • gestation 21 days with litter size 4-8 • General: Used to study pesticides due to large population density in the field 6. Microtus pennsylvanicus - meadow vole - Prospect Hill virus Predisposed to tonic-clonic seizures due to handling NOT auditory Several nutrition models: a. hypoglycemia after 6 hours of fast- carbohydrate catabolism b. nutrition (anti-quality constituent
    [Show full text]
  • Colonization Process of the Brazilian Common Vesper Mouse, Calomys Expulsus
    Journal of Heredity 2011:102(3):260–268 Ó The American Genetic Association. 2011. All rights reserved. doi:10.1093/jhered/esr012 For permissions, please email: [email protected]. Advance Access publication March 25, 2011 Colonization Process of the Brazilian Common Vesper Mouse, Calomys expulsus (Cricetidae, Sigmodontinae): Downloaded from A Biogeographic Hypothesis http://jhered.oxfordjournals.org/ FABRI´CIA FERREIRA DO NASCIMENTO*, LUCIANA G. PEREIRA*, LENA GEISE,ALEXANDRA M. R. BEZERRA, PAULO S. D’ANDREA, AND CIBELE R. BONVICINO From the Genetics Division, Instituto Nacional de Caˆncer, Rua Andre´ Cavalcante, 37, 4 andar, 20231-050, Rio de Janeiro, RJ, Brazil (Nascimento and Bonvicino); the Laborato´rio de Biologia e Parasitologia de Mamı´feros Silvestres Reservato´rios, Instituto Oswaldo Cruz, Fiocruz, Avenida Brasil, 4365, 21045-900, Rio de Janeiro, RJ, Brazil (Pereira, D’Andrea, and Bonvicino); the Laborato´rio de Mastozoologia, Departamento de Zoologia, IB, Universidade do Estado do Rio de Janeiro, Rua Sa˜o Francisco Xavier 524, 220559-900, Rio de Janeiro, RJ, Brazil (Geise); and Departamento de Zoologia, Universidade at Fundação Oswaldo Cruz-Biblioteca de Manguinhos/Oswaldo Cruz Foundation-Ma on October 6, 2016 de Brası´lia, 70910-900, Brası´lia, DF, Brazil (Bezerra). *These authors contributed equally to this work. Address correspondence to Cibele R. Bonvicino at the address above, or e-mail: [email protected]. Abstract Riverine barriers have been associated to genetic diversification and speciation of several taxa. The Rio Sa˜o Francisco is one of the largest rivers in South America, representing the third largest river basin in Brazil and operating as a geographic barrier to gene flow of different taxa.
    [Show full text]
  • Diversity and Endemism in Tidal-Marsh Vertebrates
    Studies in Avian Biology No. 32:32-53 DIVERSITY AND ENDEMISM IN TIDAL-MARSH VERTEBRATES RUSSELL GREENBERG AND JESúS E. MALDONADO Abstract. Tidal marshes are distributed patcliily, predominantly along the mid- to high-latitude coasts of the major continents. The greatest extensions of non-arctic tidal marshes are found along the Atlantic and Gulf coasts of North America, but local concentrations can be found in Great Britain, northern Europe, northern Japan, northern China, and northern Korea, Argentina-Uruguay-Brazil, Australia, and New Zealand. We tallied the number of terrestrial vertebrate species that regularly occupy tidal marshes in each of these regions, as well as species or subspecies that are largely restricted to tidal marshes. In each of the major coastal areas we found 8-21 species of breeding birds and 13-25 species of terrestrial mammals. The diversity of tidal-marsh birds and mammals is highly inter-correlated, as is the diversity of species restricted to saltmarshes. These values are, in turn, correlated with tidal-marsh area along a coastline. We estimate approximately seven species of turtles occur in brackish or saltmarshes worldwide, but only one species is endemic and it is found in eastern North America. A large number of frogs and snakes occur opportunistically in tidal marshes, primarily in southeastern United States, particularly Florida. Three endemic snake taxa are restricted to tidal marshes of eastern North America as well. Overall, only in North America were we able to find documentation for multiple taxa of terrestrial vertebrates associated with tidal marshes. These include one species of mammal and two species of birds, one species of snake, and one species of turtle.
    [Show full text]
  • Microevolution of Puumala Hantavirus in Its Host, the Bank Vole (Myodes Glareolus)
    Microevolution of Puumala hantavirus in its host, the bank vole (Myodes glareolus) Maria Razzauti Sanfeliu Research Programs Unit Infection Biology Research Program Department of Virology, Haartman Institute Faculty of Medicine, University of Helsinki and the Finnish Forest Research Institute Academic dissertation Helsinki 2012 To be presented for public examination, with the permission of the Faculty of Medicine, University of Helsinki, in Lecture Hall 2, Haartman Institute on February the 24th at noon Supervisors Professor, docent Alexander Plyusnin Department of Virology, Haartman Institute P.O.Box 21, FI-00014 University of Helsinki, Finland e-mail: [email protected] Professor Heikki Henttonen Finnish Forest Research Institute (Metla) P.O.Box 18, FI-01301 Vantaa, Finland e-mail: [email protected] Reviewers Docent Petri Susi Biosciences and Business Turku University of Applied Sciences, Lemminkäisenkatu 30, FI-20520 Turku, Finland e-mail: [email protected] Professor Dennis Bamford Department of Biological and Environmental Sciences Division of General Microbiology P.O.Box 56, FI-00014 University of Helsinki, Finland e-mail: [email protected] Opponent Professor Herwig Leirs Dept. Biology, Evolutionary Ecology group Groenenborgercampus, room G.V323a Groenenborgerlaan 171, B-2020 University of Antwerpen, Belgium e-mail: [email protected] ISBN 978-952-10-7687-9 (paperback) ISBN 978-952-10-7688-6 (PDF) Helsinki University Print. http://ethesis.helsinki.fi © Maria Razzauti Sanfeliu, 2012 2 Contents
    [Show full text]
  • Seasonally Flooded Stepping Stones
    Rocha et al. Zoological Studies 2014, 53:60 http://www.zoologicalstudies.com/content/53/1/60 RESEARCH Open Access Seasonally flooded stepping stones: emerging diversity of small mammal assemblage in the Amazonia-Cerrado ecotone, central Brazil Rita Gomes Rocha1,2,3*, Eduardo Ferreira1, Iracy Coelho Menezes Martins3, Leonora Pires Costa2 and Carlos Fonseca1 Abstract Background: Seasonally flooded natural forest fragments, so-called ipucas, in the Araguaia alluvial plain of the state of Tocantins, central Brazil, represent a peculiar landscape that is poorly surveyed. This study considers the diversity in the small mammal assemblage and the zoogeographical patterns of this assemblage when compared to 30 other study sites in Brazil. Results: ‘Ipucas’ harbour species adapted to disturbed habitats that are common in fragmented landscapes and endemic species of the Cerrado. However, they also constitute the most central-eastern distribution limit of one typical Amazonian species. These fragments are closely related to the central-western region of Brazil, in the Amazonia-Cerrado ecotone, which lies in the so-called arc of deforestation. Conclusions: Our results reinforce the idea that the habitat mosaic found in the Araguaia alluvial plain has an important role in promoting the high biodiversity of this area and that natural forest fragments may act as a refuge and food resource for several species. These fragments may also constitute essential stepping stones for small mammal species within agricultural landscapes. Further studies are essential to better understand small mammal communities inhabiting natural forest fragments in the Araguaia alluvial plain, and these will support in assessing the future of this fauna and, thereby, help to establish future conservation practices in this area.
    [Show full text]
  • Experimental Assessment of Rodent Control on Two Poultry Farms of Central Argentina
    © 2009 Poultry Science Association, Inc. Experimental assessment of rodent control on two poultry farms of central Argentina I. E. Gómez Villafañe,*† 1 F. O. Miñarro ,*2 L. Valenzuela,* 3 and D. N. Bilenca*† * Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas Downloaded from https://academic.oup.com/japr/article-abstract/18/3/622/880022 by guest on 01 January 2019 y Naturales, Universidad de Buenos Aires, 4° piso, Pab. II, Ciudad Universitaria (C1428EHA), Buenos Aires, Argentina; and † Consejo Nacional de Investigaciones Científicas, Avda. Rivadavia 1917, CP C1033AAJ, Cdad. de Buenos Aires, Argentina Primary Audience: Flock Supervisors, Researchers, Veterinarians SUMMARY We experimentally assessed the effect of controlling vegetation height along farm perimeters on the abundance of rodents in 2 broiler poultry farms in central Argentina. We carried out an experimental design based on the before-after–control-impact method. After vegetation treat- ments, there was a significant decrease in rodent abundance at the perimeter of the farm with control of vegetation height because of the reduction of the Pampean grassland mouse Akodon azarae. In poultry houses, there was a significant decrease in rodent abundance on nonaffected farms because of the reduction of the commensal house mouse Mus musculus domesticus, pos- sibly because of a major collocation of rodenticide. Our results indicate that both the control of vegetation growth at the perimeters and the appropriate timing of rodenticide applications are effective measures for rodent control on broiler poultry farms when both control measures are applied simultaneously. We achieved effective rodent control through an understanding of the habitat use and population dynamics of the species involved and the characteristics of the area where the control program would be applied.
    [Show full text]