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Abstract:

We report results of dietary analyses of Akodon azarae and Calomys laucha and of food availability in corn fields and their borders in the Pampean region of central Argentina. Sampling was conducted at different developmental crop stages, in order to assess the influence of food availability on diet and reproductive performance. Both species were generalistic and opportunistic feeders, but differed in food habits and nutritional requirements for reproduction : A azarae had omnivorous diets and its breeding activity was related to high requirements of insects, whereas C. laucha was mainly an herbivorous-granivorous feeder and required high amounts of green forage to improve its reproductive performance. We discuss the role that food availability may play as a potential factor for competitive interactions at the different crop stages, regarding the changes in abundance of both species and their differences in diet, competitive ability, habitat preferences and colonizing potential. © 1992, Walter de Gruyter. All rights reserved.

Registro:

Documento: Artículo
Título:Food habits of akodon azarae and calomys laucha (cricetidae, rodentia) in agroecosystems of central argentina
Autor:Bilenca, D.N.; Kravetz, F.O.; Zuleta, G.A.
Filiación:Departamento de Ciencias Biologicas, Faculdad de Ciencias Exact as y Natu rales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon II, Piso 4, Buenos Aires (1428), Argentina
Departamento de Ciencias Biologicas, Faculdad de Ciencias Exact as y Natu rales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon II, Piso 4, Buenos Aires (1428), Argentina
The Ecology Group, Dept. of Zoology, The University of British Columbia, 6270 University Boulevard, B.C. V6T 2A9, Vancouver, United States
Palabras clave:agroecosystem; feeding; Argentina, Pampas; Akodon azarae; Calomys laucha; Cricetidae
Año:1992
Volumen:56
Número:3
Página de inicio:371
Página de fin:384
DOI: http://dx.doi.org/10.1515/mamm.1992.56.3.371
Título revista:Mammalia
Título revista abreviado:Mammalia
ISSN:00251461
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00251461_v56_n3_p371_Bilenca.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v56_n3_p371_Bilenca

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Citas:

---------- APA ----------
Bilenca, D.N., Kravetz, F.O. & Zuleta, G.A. (1992) . Food habits of akodon azarae and calomys laucha (cricetidae, rodentia) in agroecosystems of central argentina. Mammalia, 56(3), 371-384.
http://dx.doi.org/10.1515/mamm.1992.56.3.371
---------- CHICAGO ----------
Bilenca, D.N., Kravetz, F.O., Zuleta, G.A. "Food habits of akodon azarae and calomys laucha (cricetidae, rodentia) in agroecosystems of central argentina" . Mammalia 56, no. 3 (1992) : 371-384.
http://dx.doi.org/10.1515/mamm.1992.56.3.371
---------- MLA ----------
Bilenca, D.N., Kravetz, F.O., Zuleta, G.A. "Food habits of akodon azarae and calomys laucha (cricetidae, rodentia) in agroecosystems of central argentina" . Mammalia, vol. 56, no. 3, 1992, pp. 371-384.
http://dx.doi.org/10.1515/mamm.1992.56.3.371
---------- VANCOUVER ----------
Bilenca, D.N., Kravetz, F.O., Zuleta, G.A. Food habits of akodon azarae and calomys laucha (cricetidae, rodentia) in agroecosystems of central argentina. Mammalia. 1992;56(3):371-384.
http://dx.doi.org/10.1515/mamm.1992.56.3.371