DOCSLIB.ORG

Oral Presentation Abstracts by Day and Symposium from the 11Th

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Oral Presentation Abstracts by Day and Symposium from the 11Th University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Mammalogy Papers: University of Nebraska State Museum, University of Nebraska State Museum 8-2013 Oral Presentation Abstracts by Day and Symposium from the 11th International Mammalogical Congress (Belfast, Northern Ireland : August 11-16, 2013) International Mammalogical Congress Follow this and additional works at: http://digitalcommons.unl.edu/museummammalogy Part of the Biodiversity Commons, Terrestrial and Aquatic Ecology Commons, and the Zoology Commons International Mammalogical Congress, "Oral Presentation Abstracts by Day and Symposium from the 11th International Mammalogical Congress (Belfast, Northern Ireland : August 11-16, 2013)" (2013). Mammalogy Papers: University of Nebraska State Museum. 249. http://digitalcommons.unl.edu/museummammalogy/249 This Article is brought to you for free and open access by the Museum, University of Nebraska State at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Mammalogy Papers: University of Nebraska State Museum by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Abstracts from the 11th International Mammalogical Congress (Belfast, Northern Ireland : August 11-16, 2013). Copyright 2013, International Federation of Mammalogists and the Mammal Society. Used by permission. Oral Presentation Abstracts by Day and Symposium Day time 3. Exploring population dynamics in community and landscape contexts Lidicker, Berkeley; Saitoh, Sapporo Mon 10:00 Introduction to the symposium and some thoughts on anti-regulation in a community context W.Z. Lidicker, Jr., Mon 10:00 ([email protected]), Mus.Vert.Zoology, Uni.California, Berkeley, USA This symposium explores the forefront of research on population dynamics of mammals by considering population density changes explicitly in the framework of the communities and ecoscapes in which they occur. This approach will not only help us to better understand population Bell behavior, but also will serve to more effectively manage populations of economic and conservation concern. My contribution will explore the role of cooperation and other non-competitive coactions as they may influence population dynamics. Allee effects (anti-regulating influences) are known to affect the behavior of populations especially at high or low numbers. These influences result from stimulation of population growth at high densities and increasing risk of demic extinction at low densities. Four out of the five coaction types seem capable of generating analogous anti-regulating influences in communities, suggesting that population changes will be understood only if the community network of positive and negative interactions is taken seriously into consideration. Climate influences cyclic patterns of vole populations through altering ecological communities: time-series Mon 10:20 analyses of the Hokkaido vole T. Saitoh, ([email protected]), Hokkaido Uni., Sapporo, Japan Abundance of rodents has been investigated at various forests of Hokkaido, Japan, for management purposes. In previous studies on the grey-sided voles, using 225 time series, cyclic populations with delayed density dependence were found in colder areas, whereas in warmer areas voles were less cyclic. Using new statistical techniques, we demonstrate that temperature represented by the warm index, by limiting the abundance of other prey such as the wood mouse (Apodemus speciosus), is a key factor determining the cyclicity and the density dependence structure of vole populations. In cold areas, a 3-year cycle length due to the predator-prey interaction was prevalent. In warmer areas, wood mice were relatively abundant. Where competition with wood mice was moderate, voles experienced an exponential decay in their population growth rate and an elongation of their predator-prey cycle (3-4 years). With severe interspecific competition, a combined cycle with two different lengths was exhibited. Long-term population fluctuations of small mammal populations in a semi-arid mallee ecosystem S. Carthew, Mon 10:40 ([email protected]), Charles Darwin Uni., Darwin , Northern Territories, Australia, L. Engledow, Uni. Adelaide, Adelaide, Australia Populations of mammals in arid areas fluctuate markedly in response to large, unpredictable rainfall events. Less is known about semi-arid systems and the marsupials inhabiting them, even though they are under increasing threat. We present results from a long-term (20 year) study of two marsupials (Cercartetus concinnus, Ningaui yvonneae) in Australian, semi-arid mallee. Trapping was conducted on 54 occasions from 1991 - 2011. The two species showed marked differences in population trends over time, likely related to resource requirements. C. concinnus numbers fluctuated substantially, while N. yvonneae numbers were higher and more stable. C. concinnus captures correlated to rainfall that fell 9-18 months prior, with high rainfall events likely stimulating an increase in floral food resources and triggering reproduction. N. yvonneae numbers were also positively correlated to rainfall 7-9 and 16 months prior, although correlations were weaker, most likely due to differences in diet and life-history. Landscape influences on population and community dynamics of small mammals F. Ecke, ([email protected]), Mon 11:40 Swedish Uni. Agricult. Sci., Skogsmarksgränd, Umeå, Sweden, M. Magnusson, ([email protected]), ([email protected]) Landscape structure is an important determinant of species diversity and abundance. Here, we study the community structure and dynamics of cyclic microtine rodents and shrews (Myodes glarerolus, M. rufocanus, Microtus agrestis, Myopus schisticolor, Sorex araneus, S. caecutiens and S. minutus) at 58 permanent 1 ha trapping plots within a 100×100 km study area. The community features are analyzed along a temporal gradient (1971-2005) and related to a corresponding time series of forestry-induced changes in a) focal forest patch size and b) surrounding forest structure in 2.5×2.5 km landscapes centered on the trapping plots. The small mammal community that includes habitat as well as food generalists and specialists changes over time, e.g. in terms of colonization, species diversity and cyclicity. We explore the relative importance of changes in forest structure at the local and landscape scale for these changes in the community structure and dynamics of the small mammals. Landscape effects in small mammal populations exhibiting density outbreaks and on their interactions with Mon 12:00 predators and parasites P. Giraudoux, ([email protected]), Uni. Franche-Comté/CNRS, Inst.Uni. de France Some species of small mammals (rabbits, prairie dogs, pikas, voles, etc.) have been traditionally perceived as pests and targeted for control on a very large scale despite their importance as key-stone species in their native ecosystems. During the 90s, a number of studies have shown that small mammal population management could be grounded on knowledge of the effects of landscape on population dynamics. Here we present results obtained from the long term and multi-scale study of two grassland species, Microtus arvalis and Arvicola terrestris to illustrate this approach. We describe at which scales landscape variables were found relevant to explain population dynamics and the consequences of the observed population dynamic patterns on the vertebrate community (other small mammal species and predators including species of conservation value) and parasite transmission. This knowledge has practical applications for eco-friendly control of small mammal pests and conservation. Impact or intensive forest management on voles and their predators in Finland S. Savola, (sakeri.savola@helsinki), Mon 12:20 Uni. Helsinki, Viikinkaari, FinIand, H.Henttonen, ([email protected]), Finnish Forest Res. Inst., Vantaa , Finland, H. Lindén, ([email protected]), Finnish Game & Fish. Res. Inst., Helsinki, Finland Voles are the main prey of many mammalian and avian predators. It has been hypothesised that the steep, long-term decline of grouse populations in Finland, is caused by intensive forest management which may increase the abundance of Microtus voles and thus the number of predators preferring and depending on Microtus in their diet. Higher predator densities, in their turn, cause stronger predation pressure on small game. To test this hypothesis, often called alternative prey hypothesis, we surveyed small mammals biannually 2006–2010 in forests representing four successional stages in Taivalkoski, northern Finland, from clear-cuts through successional stages to old forests. We found that that field voles (Microtus agrestis) increased after clear-cutting but bank voles (Myodes glareolus) were more numerous at all stages of succession. Densities of all vole species were lowest in young (24--30yr) forest stands. Current forestry practice in Finland has an impact on the abundances of various vole species. We discuss indirect effects of vole densities on predator and prey populations. Trophic level complexity and its influence on population dynamics and conservation J. Estes, ([email protected]), Mon 12:40 Uni.California, Santa Cruz, USA, J.S. Brashares, ([email protected]), W.J. Ripple, ([email protected]) Except for deep ocean basins, predatory mammals are universal features of the Earth's biosphere. Many of these species have declined in range and abundance as a result of various
Load more

Recommended publications
  • Redalyc.Mountain Vizcacha (Lagidium Cf. Peruanum) in Ecuador
    Mastozoología Neotropical ISSN: 0327-9383 [email protected] Sociedad Argentina para el Estudio de los Mamíferos Argentina Werner, Florian A.; Ledesma, Karim J.; Hidalgo B., Rodrigo Mountain vizcacha (Lagidium cf. peruanum) in Ecuador - First record of chinchillidae from the northern Andes Mastozoología Neotropical, vol. 13, núm. 2, julio-diciembre, 2006, pp. 271-274 Sociedad Argentina para el Estudio de los Mamíferos Tucumán, Argentina Available in: http://www.redalyc.org/articulo.oa?id=45713213 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, 13(2):271-274, Mendoza, 2006 ISSN 0327-9383 ©SAREM, 2006 Versión on-line ISSN 1666-0536 www.cricyt.edu.ar/mn.htm MOUNTAIN VIZCACHA (LAGIDIUM CF. PERUANUM) IN ECUADOR – FIRST RECORD OF CHINCHILLIDAE FROM THE NORTHERN ANDES Florian A. Werner¹, Karim J. Ledesma2, and Rodrigo Hidalgo B.3 1 Albrecht-von-Haller-Institute of Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073 Göttingen, Germany; <[email protected]>. 2 Department of Biological Sciences, Florida Atlantic University, Boca Raton, U.S.A; <[email protected]>. 3 Colegio Nacional Eloy Alfaro, Gonzales Suarez y Sucre, Cariamanga, Ecuador; <[email protected]>. Key words. Biogeography. Caviomorpha. Distribution. Hystricomorpha. Viscacha. Chinchillidae is a family of hystricomorph Cerro Ahuaca is a granite inselberg 2 km rodents distributed in the Andes of Peru, from the town of Cariamanga (1950 m), Loja Bolivia, Chile and Argentina, and in lowland province (4°18’29.4’’ S, 79°32’47.2’’ W).
    [Show full text]
  • Área Biológica Y Biomédica
    UNIVERSIDAD TÉCNICA PARTICULAR DE LOJA La Universidad Católica de Loja ÁREA BIOLÓGICA Y BIOMÉDICA TITULO DE BIÓLOGO Análisis de la composición de la dieta de Lagidium ahuacaense TRABAJO DE TITULACIÓN Autor: Sarango Peláez Bryan Daniel Director: Cisneros Vidal Rodrigo, Mgtr. LOJA – ECUADOR 2018 CARATULA I Esta versión digital, ha sido acreditada bajo la licencia Creative Commons 4.0, CC BY-NY- SA: Reconocimiento-No comercial-Compartir igual; la cual permite copiar, distribuir y comunicar públicamente la obra, mientras se reconozca la autoría original, no se utilice con fines comerciales y se permiten obras derivadas, siempre que mantenga la misma licencia al ser divulgada. http://creativecommons.org/licenses/by-nc-sa/4.0/deed.es 2018 CERTIFICACIÓN APROBACIÓN DEL DIRECTOR DEL TRABAJO DE TITULACIÓN Mgtr. Rodrigo Cisneros Vidal DOCENTE DE LA TITULACIÓN De mi consideración: El presente trabajo de fin de titulación: Análisis de la composición de la dieta de Lagidium ahuacaense realizado por Bryan Daniel Sarango Peláez; ha sido orientado y revisado durante su ejecución, por cuanto se aprueba la presentación del mismo. Loja, septiembre del 2018 f). ………………………………………………………………………………………………………… II DECLARACIÓN DE AUTORÍA Y CESIÓN DE DERECHOS “Yo Bryan Daniel Sarango Peláez declaro ser el autor (a) del presente trabajo de fin de titulación: Análisis de la composición de la dieta de Lagidium ahuacaense, de la titulación Biólogo siendo Mgtr. Rodrigo Cisneros Vidal director del presente trabajo; y eximo expresamente a la Universidad Técnica Particular de Loja y a sus representantes legales de posibles reclamos o acciones legales. Además, certifico que las ideas, conceptos, procedimientos y resultados vertidos en el presente trabajo investigativo, son de mi exclusiva responsabilidad.
    [Show full text]
  • Community Formation and the Emergence of the Inca
    University of Pennsylvania ScholarlyCommons Publicly Accessible Penn Dissertations 2019 Assembling States: Community Formation And The meE rgence Of The ncI a Empire Thomas John Hardy University of Pennsylvania, [email protected] Follow this and additional works at: https://repository.upenn.edu/edissertations Part of the History of Art, Architecture, and Archaeology Commons Recommended Citation Hardy, Thomas John, "Assembling States: Community Formation And The meE rgence Of The ncaI Empire" (2019). Publicly Accessible Penn Dissertations. 3245. https://repository.upenn.edu/edissertations/3245 This paper is posted at ScholarlyCommons. https://repository.upenn.edu/edissertations/3245 For more information, please contact [email protected]. Assembling States: Community Formation And The meE rgence Of The Inca Empire Abstract This dissertation investigates the processes through which the Inca state emerged in the south-central Andes, ca. 1400 CE in Cusco, Peru, an area that was to become the political center of the largest indigenous empire in the Western hemisphere. Many approaches to this topic over the past several decades have framed state formation in a social evolutionary framework, a perspective that has come under increasing critique in recent years. I argue that theoretical attempts to overcome these problems have been ultimately confounded, and in order to resolve these contradictions, an ontological shift is needed. I adopt a relational perspective towards approaching the emergence of the Inca state – in particular, that of assemblage theory. Treating states and other complex social entities as assemblages means understanding them as open-ended and historically individuated phenomena, emerging from centuries or millennia of sociopolitical, cultural, and material engagements with the human and non-human world, and constituted over the longue durée.
    [Show full text]
  • Nuevas Localidades Para Tres Especies De Mamíferos Pequeños (Rodentia: Cricetidae) Escasamente Conocidos En Ecuador
    Mastozoología Neotropical, 23(2):521-527, Mendoza, 2016 Copyright ©SAREM, 2016 http://www.sarem.org.ar Versión impresa ISSN 0327-9383 http://www.sbmz.com.br Versión on-line ISSN 1666-0536 Nota NUEVAS LOCALIDADES PARA TRES ESPECIES DE MAMÍFEROS PEQUEÑOS (RODENTIA: CRICETIDAE) ESCASAMENTE CONOCIDOS EN ECUADOR Jorge Brito1 y Alfonso Arguero2 1 Museo Ecuatoriano de Ciencias Naturales del Instituto Nacional de Biodiversidad, División de Mastozoología, Calle Rumipamba 341 y Av. de Los Shyris, casilla postal 17-07-8976, Quito, Ecuador. [Correspondencia: Jorge Brito <[email protected]>]. 2 Instituto de Ciencias Biológicas, Escuela Politécnica Nacional, Av. Ladrón de Guevara E-11 253 e Isabel la Católica, Casilla postal 17-01-2759, Quito, Ecuador. RESUMEN. En este trabajo se documentan nuevas localidades para tres especies de mamíferos pequeños escasamente conocidos en Ecuador, en base a colectas de campo y revisión de colecciones mastozoológicas. Reportamos la ampliación del rango de distribución de Tanyuromys aphrastus, Thomasomys fumeus y T. hudsoni. En Ecuador es necesario incrementar muestreos en las laderas de los Andes, con la finalidad de obtener una mejor documentación de la riqueza y distribución de los mamíferos pequeños. ABSTRACT. New localities for three poorly known species of small mammals (Rodentia: Cricetidae). On the basis of field efforts and a review of mammal collections, we report new localities in Ecuador for three rare small mammal species. We report extensions of the ranges of distribution for Tanyuromys aphrastus, Thomasomys fumeus and Thomasomys hudsoni. The Ecuatorian Andean region requires additional sampling efforts, in order to better document the richness and distribution of small mammals. Palabras clave: Tanyuromys aphrastus.
    [Show full text]
  • Registros Parasitológicos En Rodent Middens Del Parque Nacional Perito Moreno, Santa Cruz, Argentina
    Rev Arg Parasitol Vol. 3 - Nº 1 - Octubre 2014 ISSN: 2313-9862 REGISTROS PARASITOLÓGICOS EN RODENT MIDDENS DEL PARQUE NACIONAL PERITO MORENO, SANTA CRUZ, ARGENTINA Fugassa M H* ARTICULO RESUMEN: Se comunican los primeros hallazgos parasitológicos en rodent middens en un depósito corres- pondiente a Lagidium wolffsohni hallado en Santa Cruz, Argentina. Una muestra de los fragmentos del rodent middens obtenidos del alero de una cueva se procesaron por rehidratación en una solución acuosa de fosfato trisódico y los restos parasitarios se concentraron por flotación y sedimentación espontánea. Se observaron treinta y cinco preparados transitorios bajo el microscopio óptico, registrándose huevos de nematodes perte- necientes a capiláridos (Capillariidae), Trichuris sp. (Trichiuridae), un oxiúrido del género Heteroxynema y un cestode de la subfamilia Anoplocephalinae. Los huevos de capiláridos son similares a los de Calodium hepati- cum. Lagidium wolffsohni es un roedor endémico y raro de modo que resulta importante para su conservación conocer sus parásitos considerando que pueden vulnerar a sus poblaciones. Palabras clave: Parque Nacional Perito Moreno, helmintos gastrointestinales, coproparasitología, Lagidium wolffsohni. ABSTRACT: In this report, the results of the first parasitological examination in rodent middens belonging to Lagidium wolffsohni obtained from a cave in the Santa Cruz Province, Argentina are communicated. A sample of fragments of rodent middens was rehydrated in aqueous trisodium phosphate and parasitic remains concen- trated by flotation and spontaneous sedimentation. Thirty five transitory slides were observed under a light mi- croscope. Nematode eggs of family Capillariidae, Trichuris sp. (Trichiuridae), a member of the family Oxiuridae, Heteroxynema genus, and one of the subfamily Anoplocephalinae cestode were identified.
    [Show full text]
  • The Role and Impact of Zootaxa in Mammalogy in Its First 20 Years
    Zootaxa 4979 (1): 070–094 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Review ZOOTAXA Copyright © 2021 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4979.1.10 http://zoobank.org/urn:lsid:zoobank.org:pub:15620BC4-B989-4A98-84D0-019707FF0197 The role and impact of Zootaxa in mammalogy in its first 20 years PEDRO CORDEIRO-ESTRELA¹, ANDERSON FEIJÓ², PHILIPPE GAUBERT³, MARCELO WEKSLER4, LIONEL HAUTIER5,6, PAÚL M. VELAZCO7,8, PABLO TETA9, PIERRE-HENRI FABRE5,6, GERALDINE 10 11 VERON & JANET K. BRAUN 1Laboratório de Mamíferos, Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Campus I, João Pessoa, PB, Brazil. [email protected]; https://orcid.org/0000-0003-3383-571X 2Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, China. [email protected]; http://orcid.org/0000-0002-4643-2293 3Laboratoire Évolution & Diversité Biologique, Université Toulouse III Paul Sabatier, 118 route de Narbonne – Bât. 4R1, 31062 Toulouse cedex 9, France. [email protected]; https://orcid.org/0000-0002-1375-9935 4Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, 20940-040 Rio de Janeiro, RJ, Brazil. [email protected]; https://orcid.org/0000-0001-8111-4779 5Institut des Sciences de l’Evolution (ISEM, UMR 5554 CNRS-IRD-UM), Université de Montpellier, Place E. Bataillon - CC 064 - 34095, Montpellier Cedex 5, France. [email protected]; https://orcid.org/0000-0001-8701-5421 [email protected]; https://orcid.org/0000-0002-3414-5625 6Mammal Section, Department of Life Sciences, The Natural History Museum, SW7 5DB London, United Kingdom 7Department of Mammalogy, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA.
    [Show full text]
  • Mamíferos Del Sur De Ecuador: (Occidente, Sierra Y Oriente)
    Mamíferos del Sur de Ecuador: (Occidente, Sierra y Oriente) 1,2 1 3 1 1 1 Carlos Narváez Romero (CN), Marco Salazar Romero (MS), Darwin Valle (DV), Christian Loaiza (CL) & Rodrigo Cisneros (RC) 1 2 3 Dpto. de Ciencias Naturales de la Universidad Técnica Particular de Loja (UTPL), Cordinador Sur, Programa de Conservación de Murciélagos del Ecuador (PCME), Equanativa Cía Ltda. Fotos de los autores. Con la colaboración de UTPL, PCME, Equanativa, Naturaleza y Cultura Internacional-Loja (NCI), Fundación Arcoiris, Ministerio del Ambiente (MAE) Regional 7 y Zoo Loja. Producido por Tyana Wachter, ECCo, The Field Museum, Chicago, USA, y Carlos Narváez Romero. © Carlos Narváez [[email protected]],Marco Salazar [[email protected]],Darwin Valle [[email protected]],Christian Loaiza [[email protected]] y Rodrigo Cisneros [[email protected]] versión 1 08/2012 Los mamíferos son un grupo de animales muy diversos en tamaños, formas y hábitos; éstas particularidades, entre otras, les han permitido adaptarse a casi cualquier tipo de hábitat donde el oxígeno esté presente. Entre las principales características que los diferencian de otros tipos de animales están: la forma del cráneo, el desarrollo y especialización de las piezas dentales, la presencia de pelo en al menos un momento de su vida, glándulas mamarias en las hembras para amamantar a sus crías y la alimentación de estas con leche materna. Así como son un grupo muy diverso, a la vez resultan un tanto difíciles de observar en estado silvestre, la forma más “fácil” de reportar su presencia la mayoría del tiempo es mediante registros indirectos como huellas, rastros, heces fecales, etc.
    [Show full text]
  • Vizcacha” (Meyen, 1883) BASADO EN CONTEOS INDIRECTOS, EN EL ACP LOMAS DEL CERRO CAMPANA
    Biblioteca Digital - Direccion de Sistemas de Informática y Comunicación - Universidad Nacional de Trujillo UNIVERSIDAD NACIONAL DE TRUJILLO FACULTAD DE CIENCIAS BIOLÓGICAS ESCUELA ACADÉMICO PROFESIONAL DE CIENCIAS BIOLÓGICAS BIOLOGICAS ESTIMACIÓN DE LA ABUNDANCIA DE Lagidium peruanum “vizcacha” (Meyen, 1883) BASADO EN CONTEOS INDIRECTOS, EN EL ACP LOMAS DEL CERRO CAMPANA. TRUJILLO, MARZO – JUNIO,CIENCIAS 2017. DE TESIS PARA OBTENER EL TÍTULO PROFESIONAL DE BIÓLOGO AUTOR: Br. VICTOR JOHN ACEDO ZEGARRA Br. DIEGO FERNANDO ARANA BARDALES ASESOR: Dr. CÉSAR AUGUSTO MEDINA TAFUR BIBLIOTECA TRUJILLO – PERU 2017 Esta obra ha sido publicada bajo la licencia Creative Commons Reconocimiento-No comercial-Compartir bajo la misma licencia 2.5 Perú. Para ver una copia de dicha licencia, visite http://creativecommons.org/licenses/by-ns-sa/2.5/pe/ . No olvide citar esta tesis. Biblioteca Digital - Direccion de Sistemas de Informática y Comunicación - Universidad Nacional de Trujillo AUTORIDADES DE LA UNIVERSIDAD NACIONAL DE TRUJILLO Dr. Orlando Gonzáles Nieves RECTOR BIOLOGICAS Dr. Rubén Vera Véliz VICE-RECTOR ACADÉMICO CIENCIAS DE Dr. Weyder Portocarrero Cárdenas VICE-RECTOR DE INVESTIGACION Dr. Steban Ilich Zerpa BIBLIOTECA SECRETARIO GENERAL ii Esta obra ha sido publicada bajo la licencia Creative Commons Reconocimiento-No comercial-Compartir bajo la misma licencia 2.5 Perú. Para ver una copia de dicha licencia, visite http://creativecommons.org/licenses/by-ns-sa/2.5/pe/ . No olvide citar esta tesis. Biblioteca Digital - Direccion de Sistemas de Informática y Comunicación - Universidad Nacional de Trujillo AUTORIDADES DE LA FACULTAD DE CIENCIAS BIOLÓGICAS Dr. Freddy Roger Mejia Coico DECANO BIOLOGICAS Dr. William Elmer Zelada Estraver SECRETARIO CIENCIAS DE Dr. Freddy Peláez Peláez DIRECTOR DE LA ESCUELA ACADÉMICO PROFESIONAL DE CIENCIAS BIOLOGICAS.
    [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]
  • Notes on the Taxonomy of Mountain Viscachas of the Genus Lagidium Meyen 1833 (Rodentia: Chinchillidae)
    THERYA, 2017, Vol. 8 (1): 27 - 33 DOI: 10.12933/therya-17-479 ISSN 2007-3364 Notes on the taxonomy of mountain viscachas of the genus Lagidium Meyen 1833 (Rodentia: Chinchillidae) PABLO TETA*1 AND SERGIO O. LUCERO1 1 División Mastozoología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” Avenida Ángel Gallardo 470, C1405DJR. Buenos Aires, Argentina. E-mail [email protected] (PT), [email protected] (SOL) * Corresponding author Mountain viscachas of the genus Lagidium Meyen 1833 are medium-to-large hystricomorph rodents (1.5 -- 3 kg) that live in rocky outcrops from Ecuador to southern Argentina and Chile. Lagidium includes more than 20 nominal forms, most of them based on one or two individuals, which were first described during the 18th and 20th. Subsequent revisions reduced the number of species to three to four, depending upon the author. Within the genus, Lagidium viscacia (Molina, 1782) is the most widely distributed species, with populations apparently extended from western Bolivia to southern Argentina and Chile. We reviewed > 100 individuals of Lagidium, including skins and skulls, most of them collected in Argentina. We performed multivariate statistical analysis (i. e., principal component analysis [PCA], discriminant analysis [DA]) on a subset of 55 adult individuals grouped according to their geographical origin, using 16 skull and tooth measurements. In addition, we searched for differences in cranial anatomy across populations. PCA and DA indicate a moderate overlap between individuals from southern Argentina, on one hand, and northwestern Argentina, western Bolivia and northern Chile, on the other. The external coloration, although variable, showed a predominance of gray shades in southern Argentina and yellowish gray in northwestern Argentina.
    [Show full text]
  • The Case of the Viscacha (Lagidium Viscacia, Chinchillidae)
    Urban Ecosyst (2014) 17:163–172 DOI 10.1007/s11252-013-0314-3 Can a habitat specialist survive urbanization? the case of the viscacha (Lagidium viscacia, Chinchillidae) Francisco E. Fontúrbel & Teresa Tarifa Published online: 7 May 2013 # Springer Science+Business Media New York 2013 Abstract Urban growth is a strong driver of habitat degradation and loss. In spite of that, a surprising diversity of native species may survive in urban areas. In the La Paz, Bolivia metropolitan area and surroundings, local populations of “viscachas” (Lagidium viscacia) currently survive in small, isolated habitat patches. We assessed 13 study sites in 1999, 2003, and 2007 to document the effects of urban growth on L. viscacia habitats. Degree of disturbance at the study sites increased more between 1999 and 2003 than it did between 2003 and 2007 due to patterns of urban expansion. Using satellite imagery we determined that the urban area increased 566 ha (from 1987 to 2001) mostly due to southward urban area expansion down the valley where the best viscacha habitats were located. Occupied patch area decreased 74 % between 1999 and 2007, accompanied by significant increases in patch edge-to-area ratios. Currently L. viscacia populations in La Paz are experiencing a habitat attrition process. If a current urban expansion plan for La Paz is approved, about 75 % of the remaining habitat may be lost to urban development in a short time, compromising the future viability of this species in the metropolitan area and surroundings. Environmental regula- tions to control urban growth of the La Paz metropolitan area are urgently required and constitute the only hope for the survival of L.
    [Show full text]
  • Redalyc.Notes on the Taxonomy of Mountain Viscachas of the Genus
    Therya E-ISSN: 2007-3364 [email protected] Asociación Mexicana de Mastozoología México Teta, Pablo; Lucero, Sergio O. Notes on the taxonomy of mountain viscachas of the genus Lagidium Meyen 1833 (Rodentia: Chinchillidae) Therya, vol. 8, núm. 1, 2017, pp. 27-33 Asociación Mexicana de Mastozoología Baja California Sur, México Available in: http://www.redalyc.org/articulo.oa?id=402349653005 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 THERYA, 2017, Vol. 8 (1): 27 - 33 DOI: 10.12933/therya-17-479 ISSN 2007-3364 Notes on the taxonomy of mountain viscachas of the genus Lagidium Meyen 1833 (Rodentia: Chinchillidae) PABLO TETA*1 AND SERGIO O. LUCERO1 1 División Mastozoología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” Avenida Ángel Gallardo 470, C1405DJR. Buenos Aires, Argentina. E-mail [email protected] (PT), [email protected] (SOL) * Corresponding author Mountain viscachas of the genus Lagidium Meyen 1833 are medium-to-large hystricomorph rodents (1.5 -- 3 kg) that live in rocky outcrops from Ecuador to southern Argentina and Chile. Lagidium includes more than 20 nominal forms, most of them based on one or two individuals, which were first described during the 18th and 20th. Subsequent revisions reduced the number of species to three to four, depending upon the author. Within the genus, Lagidium viscacia (Molina, 1782) is the most widely distributed species, with populations apparently extended from western Bolivia to southern Argentina and Chile.
    [Show full text]