Population dynamics of five sigmodontine rodents of Northwestern Patagonia

• Autorzy: Guthmann N. , Lozada M. , Monjeau J.A. , Heinemann K.M.
• Języki publikacji: EN

Abstrakty

EN

Population dynamics of five rodent species were studied, from March 1991 to August 1994, in an area located in the ecotonal steppe of northwestern Patagonia, Argentina {at about 40°S). Seasonal and annual fluctuations in population numbers were found in all sigmodontine species. The reproductive period, sex ratio and longevity of the five species were also studied. Abrothrix xanthorhinus (Waterhouse, 1837), a habitat generalist, was the most abundant species. Eligmodontia morgani (Allen, 1901), Abrothrix longipilis (Waterhouse, 1837), Reithrodon auritus (Fischer, 1814) and Oligoryzomys longicaudatus (Bennett, 1832) were subdominant. The present study is a first description of the population dynamics in this rodent community, whose ecological characteristics gather importance considering that some of these species are Hantavirus reservoirs.

Słowa kluczowe

EN

annual fluctuation; sex ratio; population dynamics; Patagonia; rodent; steppe; population; Argentina; reproductive period; longevity; Abrothrix xanthorhinus; spatial variation; temporal variation

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1997
• Tom: 42
• Numer: 2
• Opis fizyczny: p.143-152,fig.

Twórcy

autor

Guthmann N.

• Unidad Postal Universidad del Comahue, Bariloche 8400, Rio Negro, Argentina

autor

Lozada M.

autor

Monjeau J.A.

autor

Heinemann K.M.

Bibliografia

• Anderson H. M., Hutson V. and Law R. 1992. On the conditions for permanence of species in ecological communities. American Naturalist 139: 663-668.
• Barros V, R. and Mattio H. 1977. Tendencias y fluctuaciones en la precipitación de la región patagónica. Meteorológica 8: 237-248.
• Conover W. J. 1980. Practical nonparametric statistics. 2 ed. Texas Tech University, Lubbock: 1—493.
• Evans D. M. 1973. Seasonal variation in the body composition and nutrition in the vole Microtus agrestis. Journal of Animal Ecology 42: 1-18.
• Glanz W. E. 1984. Ecological relationships of two species of Akodan in central Chile. Journal of Mammalogy 65: 433-441.
• González L. and Murúa R. 1985. Características del período reproductivo de tres especies de roedores cricétidos del bosque higrófilo templado. Anales del Museo de Historia Natural de Valparaíso (Chile) 16: 87-99.
• González L., Murúa R. and Feito R. 1982. Densidad poblacional y patrones de actividad espacial de Akodan oliuaceus (Rodentia, Cricetidae) en habitats diferentes. [In: Actas del VIII Congreso Latinoamericano de Zoología. P. Salinas, ed], Mérida, Venezuela: 935-947.
• González L., Murúa R. and Jofré C. 1989. The effect of seed availability on population density of Oryzomys in southern Chile. Journal of Mammalogy 70: 401-403.
• Iverson S. L. and Turner I?. N. 1974. Winter weight dynamics in Microtus pennsyluanicus. Ecology 55: 1030-1041.
• Johnson W. E., Franklin W. L. and Iriarte J. A. 1990. The mammalian fauna of the northern Chilean Patagonia: a biogeographical dilemma. Mammalia 54: 457-469.
• Kaufman D. W., Kaufman A. and Finck E. J. 1995. Temporal variation in abundance of Peromyscus leucopus in wooded habitats of eastern Kansas. American Midland Naturalist 133: 7-17.
• Kelt D. A. 1994. The natural history of small mammals from Aisén Region, southern Chile. Revista Chilena de Historia Natural 67: 183-207.
• Kelt D. A. 1996. Ecology of small mammals across a strong environmental gradient in southern South America. Journal of Mammalogy 77: 205-219.
• Krebs C. J. 1966. Demographic changes in fluctuating populations of Microtus californicus. Ecological Monographs 36: 239-273.
• Krebs C. J. 1992. The role of dispersal in cyclic rodent populations. |In: Animal dispersal. Small mam­mals as a model, N. C. Stenseth and W. Z. Lidicker Jr, eds]. Chapman & Hall, London: 160-173.
• Lidicker W. Z., Jr 1988. Solving the enigma of microtine "cycles". Journal of Mammalogy 69: 225-235. M'Closkey R. T. 1972. Temporal changes in population and species diversity in a California rodent community. Journal of Mammalogy 53: 657-676
• Meserve P. L. 1981. Resource partitioning in a Chilean semiarid small mammal community. Journat of Animal Ecology 50: 745-757.
• Meserve P. L., Lang B. K.., Murúa R., Muoz-Pedreros A. and González L. 1991, Terrestrial small mammals characteristics in a primary growth Chilean temperate rainforest. Revista Chilena de Historia Natural 64: 157-169.
• Meserve P. L., Lang B. K. and Patterson B. D. 1988. Trophic relationships of small mammals in a Chilean temperate rainforest. Journal of Mammalogy 69: 721-730.
• Meserve P. L. and Le Boulengé E. 1987. Population dynamics and ecology of small mammals in the northern Chilean semiarid region. Jin: Studies in neotropical mammalogy: essays in honor of Philip Hershkovitz. B. D. Patterson and R. M. Timm, eds], Fieldiana; Zoology, New Series, 39: 413-431,
• Meserve P. L., Murúa R., Lopetegui O. N. and Rau J. R. 1982. Observations on the small mamma! fauna of a primary temperate rain forest in southern Chile, Journal of Mammatogy 63: 315-317.
• Monjeau J. A., Bonino N. and Saba S. L. 1994. Annotated checklist of the living land mammals in Patagonia, Argentina. Mastozoologia Neotropical 1: 143-156.
• Morris D. W. 1990. Temporal variation, habitat selection and community structure. Oikos 59: 303-312.
• Murúa R. and González L. A. 1981. Estudios de preferencias y hábitos alimentarios en dos especies de roedores cricétidos. Medio Ambiente, Valdivia, Chile 5: 115-124.
• Murúa R. and González L. A, 1982. Microhahitat selection in two Chilean cricetid rodents. Oecologia 52: 12-15.
• Murúa R. and González L. A. 1986. Regulation of numbers in two Neotropical rodent species in southern Chile. Revista Chilena de Historia Natural 59: 193-200.
• Murúa R., Meserve P. L., González L. A. and Jofré C. 1987, The small mammal community of a Chilean temperate rainforest: lack of evidence of competition between dominant species. Journal of Mammalogy 68: 729-738.
• Patterson B. D., Meserve P. L. and Lang B, K. 1989. Distribution and abundance of small mammals along an elevational transect in temperate rain forests of Chile. Journal of Mammalogy 70: 67-78.
• Pearson O. P. 1983. Characteristics of a mammalian fauna from forests in Patagonia, southern Argentina. Journal of Mammalogy 64: 476-492.
• Pearson O. P. 1988. Biology and feeding dynamics of a South American herbivorous rodent, Reitlirodon. Studies on Neotropical Fauna and Environment 23: 29-39.
• Pearson O. P. 1992. Reproduction in a South American mouse, Abrothrtx Icmgipilis. The Anatomical Record 234: 73-88.
• Pearson O. P. 1995. Annotated keys for identifying small mammals living in or near Nahuel Huapi National Park or Lanin National Park, southern Argentina. Mastozoologia Neotropical 2: 99-148.
• Pearson O. P., Martin S. and Bellati J. 1987. Demography and reproduction of the silky desert mouse {Eligmodontia morgani) in Argentina. |In: Studies in neotropical mammalogy: essays in honor of Philip Hershkovitz. B. D. Patterson and R. M. Timm, eds.J. Fieldiana: Zoology, New Series, 39: 433-446.
• Pearson O. P. and Pearson A. K. 1982. Ecology and biogeography of the southern rainforests of Argentina. [In: Mammalian biology in South America. M. A. Mares and H. H. Genoways, eds.|. Pymatuning Symposium of Ecology 6: 129-142.
• Wiens J. A. 1986. Spatial scale and temporal variation in studies of shrubsteppe birds. [In: Community ecology. J. Diamond and T. J. Case, eds|. Harper and Row, New York: 154-72.
• Wirminghaus J. O. and Perrin M. R. 1993. Seasonal changes in density, demography and body composition of small mammals in a southern temperate forest. Journal of Zoology 229: 303-318.
• Zar J. H. 1984. Biostatisticai Analysis. Prentice Hall, Englewood Cliffs, New Jersey: 1-718,
• Zuleta G. A., Kravetz F. O., Busch M. and Percich R, E. 1988. Dinámica poblacional del ratón del pastizal pampeano (Akodon azarae) en ecosistemas agrarios de Argentina. Revista Chilena de Historia Natural 61: 231-244.