Estudio de parasitismo de cría del Renegrido (Molothrus bonariensis) en Calandria (Mimus saturninus), en Villa María, Córdoba

Sergio A. Salvador

doi:10.56178/eh.v12i3.1183

Articles Published 01 December 1985 https://doi.org/10.56178/eh.v12i3.1183

A Study of Brood Parasitism by the Shiny cowbird (Molothrus bonariensis) on the Chalk-browed mockingbird (Mimus saturninus) in Villa María, Córdoba

Molothrus bonariensis Mimus saturninus Córdoba Brood parasitism

Sergio A. Salvador Bv. Sarmiento 698 - 5900 Villa María, Córdoba, Argentina

Abstract

The host-parasite interactions between Chalk-browed Mockingbirds (Mimus saturninus) and Shiny Cowbirds (Molothrus bonariensis) were studied around Villa María, Córdoba, Argentina, between 1979–1984. The incidence of parasitism was 81/92 or 88.04%. Mockingbirds in the study site accepted Cowbird eggs, even those of the immaculate morph, which are rejected in Buenos Aires. Incubation period for the host was 14–15 days, for the parasite 12–13 days, with nestling periods of 13–14 and 14–15 days respectively. Breeding season of host and parasite overlapped almost completely. In a better-studied subsample of parasitized nests, success for the host was 7.70% (ratio fledglings/eggs of 3/39) and for the parasite 6.45% (2/31). Cowbirds punctured and removed host eggs. Mockingbirds were probably the best local hosts for the Cowbirds

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References

Barrows, W. B., 1883. Birds of the lower Uruguay. Bulletin of the Nuttall Ornithological Club, 8: 82–94.
Dinelli, L. M., 1937. La protección de las Aves. Hornero, VI(3): 483–488.
Fraga, R. M., 1982. Host-brood parasite interactions between Chalk-browed Mockingbirds and Shiny Cowbirds. M.A. Thesis, Universidad de California, Santa Barbara, U.S.A.
——, 1983. Parasitismo de cría del Renegrido (Molothrus bonariensis) sobre el Chingolo (Zonotrichia capensis): nuevas observaciones y conclusiones. Hornero, número extraordinario, pp. 245–255.
Friedmann, H., 1929. The Cowbirds. C. C. Thomas, Springfield, Ill., U.S.A., pp. 1–421.
Friedmann, H., L. F. Kiff & S. I. Rothstein, 1977. A further contribution to knowledge of the host relations of the parasitic cowbirds. Smithsonian Contributions to Zoology, (235): 1–75.
Hoy, G. & J. Ottow, 1964. Biological and oological studies of the molothrine cowbirds (Icteridae) of Argentina. Auk, 81: 186–203.
Hudson, G. E., 1974. Aves del Plata. Libros de Hispanoamérica, Buenos Aires, pp. 1–361.
Mason, P., 1980. Ecological and evolutionary aspects of host selection in cowbirds. Ph.D. Dissertation, University of Texas at Austin.
Pereyra, J. A., 1937. Aves de la zona ribereña nordeste de la provincia de Buenos Aires. Memorias del Jardín Zoológico, 9: 1–304.
Rothstein, S. I., 1975. Evolutionary rates and host defenses against avian brood parasites. American Naturalist, 109: 161–176.
Salvador, S. A., 1983. Parasitismo de cría del Renegrido (Molothrus bonariensis) en Villa María, Córdoba, Argentina (Aves: Icteridae). Historia Natural, 3(16): 149–158.
Sick, H., 1958. Notas biológicas sobre o Guadério, Molothrus bonariensis (Gmelin) (Icteridae, Aves). Revista Brasileira de Biologia, 18(4): 417–431.
Smyth, C. H., 1928. Descripción de una colección de huevos de aves argentinas, II. Hornero, IV(2): 125–152.
Wilson, D. B., 1979. Notas sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios paseriformes observados en la provincia de Corrientes. Hornero, XII(1): 69–71

How to cite

Sergio A. Salvador (1985). A Study of Brood Parasitism by the Shiny cowbird (Molothrus bonariensis) on the Chalk-browed mockingbird (Mimus saturninus) in Villa María, Córdoba. El Hornero, Vol. 12 No. 3 (1985), 141-149. https://doi.org/10.56178/eh.v12i3.1183

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[1] Barrows, W. B., 1883. Birds of the lower Uruguay. Bulletin of the Nuttall Ornithological Club, 8: 82–94.

[2] Dinelli, L. M., 1937. La protección de las Aves. Hornero, VI(3): 483–488.

[3] Fraga, R. M., 1982. Host-brood parasite interactions between Chalk-browed Mockingbirds and Shiny Cowbirds. M.A. Thesis, Universidad de California, Santa Barbara, U.S.A.

[4] ——, 1983. Parasitismo de cría del Renegrido (Molothrus bonariensis) sobre el Chingolo (Zonotrichia capensis): nuevas observaciones y conclusiones. Hornero, número extraordinario, pp. 245–255.

[5] Friedmann, H., 1929. The Cowbirds. C. C. Thomas, Springfield, Ill., U.S.A., pp. 1–421.

[6] Friedmann, H., L. F. Kiff & S. I. Rothstein, 1977. A further contribution to knowledge of the host relations of the parasitic cowbirds. Smithsonian Contributions to Zoology, (235): 1–75.

[7] Hoy, G. & J. Ottow, 1964. Biological and oological studies of the molothrine cowbirds (Icteridae) of Argentina. Auk, 81: 186–203.

[8] Hudson, G. E., 1974. Aves del Plata. Libros de Hispanoamérica, Buenos Aires, pp. 1–361.

[9] Mason, P., 1980. Ecological and evolutionary aspects of host selection in cowbirds. Ph.D. Dissertation, University of Texas at Austin.

[10] Pereyra, J. A., 1937. Aves de la zona ribereña nordeste de la provincia de Buenos Aires. Memorias del Jardín Zoológico, 9: 1–304.

[11] Rothstein, S. I., 1975. Evolutionary rates and host defenses against avian brood parasites. American Naturalist, 109: 161–176.

[12] Salvador, S. A., 1983. Parasitismo de cría del Renegrido (Molothrus bonariensis) en Villa María, Córdoba, Argentina (Aves: Icteridae). Historia Natural, 3(16): 149–158.

[13] Sick, H., 1958. Notas biológicas sobre o Guadério, Molothrus bonariensis (Gmelin) (Icteridae, Aves). Revista Brasileira de Biologia, 18(4): 417–431.

[14] Smyth, C. H., 1928. Descripción de una colección de huevos de aves argentinas, II. Hornero, IV(2): 125–152.

[15] Wilson, D. B., 1979. Notas sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios paseriformes observados en la provincia de Corrientes. Hornero, XII(1): 69–71