Cielo reproductivo y estructura etaria de Ctenomys mendocinus (Rodentia, Ctenomyidae) del Piedemonte de Mendoza, Argentina

Authors

  • María I. Rosi Unidad de Ecología Animal IADIZA-CONICET, C. C. 507, 5000, Mendoza, Argentina
  • Silvia Puig Unidad de Ecología Animal IADIZA-CONICET, C. C. 507, 5000, Mendoza, Argentina
  • Fernando Videla Unidad de Ecología Animal IADIZA-CONICET, C. C. 507, 5000, Mendoza, Argentina
  • Mónica I. Cona Unidad de Ecología Animal IADIZA-CONICET, C. C. 507, 5000, Mendoza, Argentina
  • Virgilio G. Roig Unidad de Ecología Animal IADIZA-CONICET, C. C. 507, 5000, Mendoza, Argentina

Abstract

Reproductive characteristics and age structure were studied in a population of Ctenomys mendocinus, located in the Andean Piedmont of Mendoza (1330 m elevation). Sexual activity occurred from mid-Jelly through March, with the first births occurring , in mid-October. Litters born at the end of the reproductive season resulted from a second pregnancy caused by postpartum estrus or mid-lactation estrus. Individuals reached sexual maturity in the first reproductive season after their birth. Mature males were active all year long. Their testicular size increased in winter, when sexual activity of females began. Sexualratio ofimmature and mature individuals was notsignificantly differentfrom 1:1 throughout the year. The population consisted of a high proportion of mature individuals (73.7%, n =141). This Piedmont population showed a longer reproductive period, and a higher percentage of pregnancy by postpartum estrus than a population from the Precordillera (3000 m elevation) previously studied.These characteristics would determine a higherreproductive potential, according to the better climatic conditions and higher food availability in the Piedmont.

References

Ambrosetti, 3.A., L.A. Del Vitto y F.A. Roig. 1986.La vegetación del Paso de Uspallata, Provincia de Mendoza, Argentina. Veróffentlicher Geobotanischen Institutes ETH, Stiftung Rübel (Zürich) 91: 141-180.

Batzli, G.0.1986. Nutritional ecology of the California vole: effects of food quality on reproduction. Ecology 67:406-412.

Busch, C., A.I. Malizia, O.A.Scaglia y O.A. Reig. 1989.Spatial distribution and atributtes of a population of Ctenomys ialarum (Rodentia, Octodontidae). Journal of Mammalogy 70:204-208.

Capitanelli, R. 1972. Geologia, geomorfologia, climatología, fitogeografía y zoogeografía de la provincia de Mendoza. Suplemento del Boletin de la Asociación Argentina de Botánica 13:15-49.

Corte, A.E. 1986. Delimitation of geocryogenic (Periglacial) regions and associated geomorphic belts at 33oS. L. Andes of Mendoza, Argentina. Biuletyn Peryglacjalny 31: 31-34.

Godfrey, G. y P. Crowcroft. 1960. The life of the mole (Talpa europaea L.). London, Museum Press 152 Pp.

Hansen, R.M. 1960. Age and reproductive characteristics of mountain pocket gophersin Colorado. Journal of Mammalogy 41:323-335.

Kravetz, F.O., M. Busch, R.E. Percich, M.C. Manjón y P.N. Marconi. 1981. Ecología de Calomys lancha (Rodentia, Cricetidae) en el Departamento de Rio Cuarto (Córdoba). II. Criterios para la determinación de edades y crecimiento. Ecología 6: 35-44.

López-Fuster, M.J. ,J. Gosdlbez y S. Lluch. 1968. Characteristics of the Reproductive Cycle of the Mole, Talpa europaea, in the Northeast of the Iberian Peninsula. Acta Theriologica 33:131-137.

Lord, R.D. 1959. The lens as an indicator of age in cotton-tail rabbits. The Journal of Wildlife Management 23:358-360.

Massarini, A.I., M.A. Barros, V.G. Roig y O.A. Reig. 1991. Banded karyotypes of Ctenomys mendocinus (Rodentia, Octodontidae) from Mendoza, Argentina. Journal of Mammalogy 72:194-198.

Malizia, A.I. yC.Busch. 1991.Reproductive parameters and growth in the fossorialrodent Ctenomystalarum (Rodentia: Octodontidae). Mammalia 55:293-305.

Méndez, E. 1992. Conservación de nuestros ecosistemas naturales. I. Los médanos de Potrerillos, Luján de Cuyo, Mendoza. Multequina 1:19-23.

Myers, K. y N. Gilbert. 1968. Determination of age of wild rabbitsin Australia.Journal Wildlife Management 32,841-849.

Nevo, E. 1979. Adaptive convergence and divergence ofsubterranean mammals. Annual Review of Ecology and Systematics 10:269-308.

Pearson, O.P. 1959. Biology of subterranean rodents, Ctenomys, in Perú. Memorias del Museo de Historia Natural “Javier Prado”, Lima 9:1-56.

Pearson, O.P., N. Binsztein, L. Boiry, C. Busch, M. Di Pace, G. Gallopin, P. Penchaszadeh y M. Piantanida. 1968. Estructura social, distribución espacial y composición por edades de una población de tuco-tucos (Ctenomystalarum). Investigaciones Zoológicas Chilenas 13:47-80.

Puig, S., M.I. Rosi, F. Videla y V.G. Roig. 1992.Estudio ecológico del roedor subterráneo Ctenomys mendocinus en la precordillera de Mendoza, Argentina: densidad población el y uso del espacio. Revista Chilena de Historia Natural 65:247-254.

Reig, O.A., C. Busch, M.O. Ortells y J.R. Contreras. 1990. An overview of evolution, systematics, population biology, cytogenetics, molecular biology and speciation in Ctenomys. En: Evolution of subterranean mammals at the organism al and molecular levels. E. Nevo y O.A. Reig (Eds). Alan R. Liss, Inc. New York, 7 1 - 96Pp.

Rosi, M.I, J.A. Scolaro yF. Videla. 1992 a. Distribución y relaciones sistemáticas entre poblaciones del género Ctenomys (Rodentia, Ctenomyidae) de la provincia de Mendoza (Argentina). Miscel. lània Zoológica 16: 207-222.

Rosi, M.I., S. Puig, F. Videla, L. Madoery y V.G. Roig. 1992 b. Estudio ecológico del roedor subterráneo Ctenomys mendocinus en la precordillera de Mendoza, Argentina: ciclo reproductivo -y estructura etaria. Revista Chilena de Historia Natural 65:221-223.

Sage, R.D., J.R. Contreras, V.G. Roig y J.L. Patton. 1986. Genetic variation in the south american burrowing rodents of the genus Ctenomys (Rodentia, Ctenomyidae). Zeitschrift fürSäugetierkunde 51: 158-172.

Saitoh,T. 1989.Effects of added food on some attributes of an enclosed vole population. Journal of Mammalogy 70:772—782.

Weir,B.J. 1974.Reproductive characteristics of hystricomorph rodents. Symposia of the Zoological Society of London 34:265-301.

Zar,J. H. 1984. Biostatistical analysis. Second ed. Prentice-Hall, Englewood Cliffs, New Jersey, 718Pp.

Downloads

Published

1996-12-01

How to Cite

Rosi, M. I., Puig, S., Videla, F., Cona, M. I., & Roig, V. G. (1996). Cielo reproductivo y estructura etaria de Ctenomys mendocinus (Rodentia, Ctenomyidae) del Piedemonte de Mendoza, Argentina. Ecología Austral, 6(2), 087–093. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1651

Issue

Vol. 6 No. 2 (1996)

Section

Articles

License

Authors retain their rights as follows: 1) by granting the journal the right to its first publication, and 2) by registering the published article with a Creative Commons Attribution License (CC-BY 4.0), which allows authors and third parties to view and use it as long as they clearly mention its origin (citation or reference, including authorship and first publication in this journal). Authors can make other non-exclusive distribution agreements as long as they clearly indicate their origin and are encouraged to widely share and disseminate the published version of their work.