Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The balance between litter size and the quality of offspring is a central feature to many optimal litter-size theories. We analyzed the reproductive strategies of Akodon azarae (Fischer, 1829) females, according to maternal life histories and the time of birth. Litter size decreased significantly from spring to autumn. A significant birth-season effect on mass at birth was observed. A compensatory effect of growth rate was evident during lactation. During spring and early summer, over-wintered females produced an average of 5 young, with maximum survival at weaning (100%). Females born during the current reproductive season showed a smaller litter size, probably because they favor residual reproductive value with respect to current reproduction since they have a higher life expectancy and future chances of mating than over-wintered females. Mortality reached 50% at weaning for summer litters from young mothers, whereas it declined to 22.2% in autumn. Differences in both parental investment and offspring survival suggest that litter size in A. azarae varies along the reproductive period and is dependent both on females' life history and on environmental conditions. © 2004 NRC Canada.

Registro:

Documento: Artículo
Título:Reproductive strategies in Akodon azarae (Rodentia, Muridae)
Autor:Suárez, O.V.; Busch, M.; Kravetz, F.O.
Filiación:Departamento de Ecología, Genética Y Evolución, Facultad de Ciencias Exactas Y Naturales (FCEyN), Pabellón II, C1428EHA, Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas Y Tecnológicas (CONICET), Avenida Rivadavia 1917, C1033AAJ, Buenos Aires, Argentina
Palabras clave:Climate change; Environmental impact; Probability; Strategic planning; Akodon azarae; Litter-size theories; Reproductive strategy; Biodiversity; body mass; litter size; parental investment; reproductive strategy; rodent; Akodon azarae; Muridae; Rodentia
Año:2004
Volumen:82
Número:10
Página de inicio:1572
Página de fin:1577
DOI: http://dx.doi.org/10.1139/z04-137
Título revista:Canadian Journal of Zoology
Título revista abreviado:Can. J. Zool.
ISSN:00084301
CODEN:CJZOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00084301_v82_n10_p1572_Suarez

Referencias:

  • Anderson, J.L., Boonstra, R., Some aspects of reproduction in Microtus townsendii (1979) Can. J. Zool., 57, pp. 18-24
  • Barlow, J.C., (1969) Observations on the Biology of Rodents in Uruguay, , Life Sciences Contribution of Royal Ontario Museum, Toronto, Ont
  • Bilenca, D.N., Kravetz, F.O., Seasonal changes in microhabitat use and niche overlap between Akodon azarae and Calomys laucha (Rodentia, Muridae) in agroecosystems of central Argentina (1999) Stud. Neotrop. Fauna Environ., 34, pp. 129-136
  • Brommer, J.E., Pietiäinen, H., Kolunen, H., Reproduction and survival in a variable environmental: Ural owls (Strix uralensis) and the three-years vole cycle (2002) Auk, 119, pp. 544-550
  • Busch, M., Kravetz, F.O., Competitive interactions among rodents (Akodon azarae, Calomys laucha, Calomys musculinus and Oligoryzomys flavescens) in two-habitat system. I: Spacial and numerical relationship (1992) Mammalia, 56, pp. 45-56
  • Carranza, J., Sexual selection for male body mass and the evolution of litter size in mammals (1996) Am. Nat., 14, pp. 81-100
  • Charnov, E.L., Krebs, J.R., On clutch size and fitness (1974) Ibis, 116, pp. 217-219
  • Clutton-Brock, T.H., Reproductive success (1988) Studies of Individual Variation in Contrasting Breeding Systems, , Edited by T.H. Clutton-Brock. The University of Chicago Press, Chicago
  • Crespo, J.A., Ecología de una comunidad de roedores silvestres en el Partido de Rojas, Provincia de Buenos Aires (1966) Rev. Mus. Argent. Cienc. Nat. Ecol., 1, pp. 79-134
  • Dalby, P., Biology of pampa rodents. Balcarce Area, Argentina (1975) Publ. Mus. Mich. State Univ. Biol. Ser., 5, pp. 149-272
  • Dobson, F.S., Myers, P., The seasonal decline in the litter size of Meadow voles (1989) J. Mammal., 70, pp. 142-152
  • French, N.R., Stoddart, D.M., Bobex, B., Patterns of demography in small mammal populations (1975) Small Mammals: Their Productivity and Population Dynamics, pp. 73-102. , Edited by F.B. Golley, K. Petrusewicz, and L. Ryszkowki. Cambridge University Press, London
  • Glass, G.G., Korch, G.W., Childs, J.E., Seasonal and habitat differences in growth rates of wild Rattus norvergicus (1988) J. Mammal., 69, pp. 587-592
  • Groeters, F.R., Dingle, H., Genetic and maternal influences on life history plasticity in response to photoperiod by milkweed bugs (Oncopeltus fasciatus) (1987) Am. Nat., 129, pp. 332-346
  • Keller, B.L., Krebs, C.J., Microtus populations biology. III. Reproductive changes in fluctuating populations of M. ochrogaster and M. pennsylvanicus in southern Indiana (1970) Ecol. Monogr., 40, pp. 263-294
  • Kott, E., Robinson, W.L., Seasonal variation in litter size of the meadow vole in southern Ontario (1963) J. Mammal., 44, pp. 467-470
  • Krohne, D.T., Intraspecific litter size variation in Microtus californicus. II. Variation between populations (1980) Evolution, 34, pp. 1174-1182
  • Krohne, D.T., Intraspecific litter size variation in Microtus californicus: Variation within populations (1981) J. Mammal., 62, pp. 29-40
  • McNamara, J.M., Houston, A.I., State-dependent life histories (1996) Nature (Lond.), 380, pp. 215-221
  • Martin, T.E., Avian life-history evolution has an eminent past. Does it have a bright future? (2004) Auk, 121, pp. 289-301
  • Massoia, E., Descripción y rasgos bioecológicos de una nueva subespecie de cricétido: Akodon azarae bibianae (Mammalia-Rodentia) (1971) Rev. Investig. Agropecu. Ser. 4 Patol. Anim., 8, pp. 131-140
  • Millar, J.S., Pre-partum reproductive characteristics if eutherian mammals (1981) Evolution, 36, pp. 1149-1163
  • Morris, D.W., Natural selection for reproductive optima (1985) Oikos, 45, pp. 290-292
  • Morris, D.W., State-dependent optimization of litter size (1998) Oikos, 83, pp. 518-528
  • Myers, P., Master, L.L., Reproduction by Peromyscus maniculatus: Size and compromise (1983) J. Mammal., 64, pp. 1-18
  • Nakata, K., Factors affecting litter size in the red-backed vole, Clethrionomys rufocamus bedfordiae, with special emphasis on population phase (1984) Res. Popul. Ecol., 26, pp. 221-234. , Kyoto
  • Olfert, E.D., Cross, B.M., McWilliam, A.A., (1984) Guide to the Care and Use of Experimental Animals, 2. , Canadian Council on Animal Care, Ottawa, Ont
  • Pearson, O.P., La estructura por edades y la dinámica reproductiva de una población de roedores de campo, Akodon azarae (1967) Physis, 27, pp. 53-58
  • Sikes, R.S., Unit pricing: Economics and the evolution of litter size (1998) Evol. Ecol., 12, pp. 179-190
  • Sikes, R.S., Ylönen, H., Considerations of optimal litter size in mammals (1998) Oikos, 83, pp. 452-465
  • Stearns, S.C., The influence of size and phylogeny on patterns of covariation in the life history traits of mammals (1983) Oikos, 41, pp. 173-187
  • Stearns, S.C., (1995) The Evolution of Life Histories, , Oxford University Press, Oxford
  • Suárez, O.V., Kravetz, F.O., Copulatory pattern and mating system of Akodon azarae (Rodentia, Muridae) (1998) Iheringia Ser. Zool., 84, pp. 133-140
  • Suárez, O.V., Kravetz, F.O., Male female interaction during breeding and non breeding seasons in Akodon azarae (Rodentia, Muridae) (2001) Iheringia Ser. Zool., 91, pp. 171-176
  • Taitt, M.J., Krebs, C.J., Population dynamics and cycles (1985) Biology of New World Microtus, pp. 567-620. , Edited by R.H. Tamarin. Spec. Publ. Am. Soc. Mamm. No.8
  • Williams, G.C., Natural selection, the costs of reproduction, and a refinement of Lack's hypothesis (1966) Am. Nat., 100, pp. 687-690
  • Zar, J.H., (1996) Biostatical Analysis, , Prentice-Hall, Inc., Englewood Cliffs, N.J
  • Zuleta, G.A., Kravetz, F.O., Busch, M., Percich, R., Dinámica poblacional del ratón del pastizal pampeano (Akodon azarae) en ecosistemas agrarios de Argentina (1988) Rev. Chil. Hist. Nat., 61, pp. 231-244

Citas:

---------- APA ----------
Suárez, O.V., Busch, M. & Kravetz, F.O. (2004) . Reproductive strategies in Akodon azarae (Rodentia, Muridae). Canadian Journal of Zoology, 82(10), 1572-1577.
http://dx.doi.org/10.1139/z04-137
---------- CHICAGO ----------
Suárez, O.V., Busch, M., Kravetz, F.O. "Reproductive strategies in Akodon azarae (Rodentia, Muridae)" . Canadian Journal of Zoology 82, no. 10 (2004) : 1572-1577.
http://dx.doi.org/10.1139/z04-137
---------- MLA ----------
Suárez, O.V., Busch, M., Kravetz, F.O. "Reproductive strategies in Akodon azarae (Rodentia, Muridae)" . Canadian Journal of Zoology, vol. 82, no. 10, 2004, pp. 1572-1577.
http://dx.doi.org/10.1139/z04-137
---------- VANCOUVER ----------
Suárez, O.V., Busch, M., Kravetz, F.O. Reproductive strategies in Akodon azarae (Rodentia, Muridae). Can. J. Zool. 2004;82(10):1572-1577.
http://dx.doi.org/10.1139/z04-137