Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Piso 4, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Myriam E. Mermoz
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Piso 4, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Viviana Massoni
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Piso 4, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Andrea A. Astié
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Piso 4, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Fabián L. Rabuffetti
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Piso 4, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Reboreda, Juan C., Myriam E. Mermoz, Viviana Massoni, Andrea A. Astié, and Fabián L. Rabuffetti. 2003. “Impact of Brood Parasitism by Shiny Cowbirds (Molothrus Bonariensis) on the Reproductive Success of Their Hosts”. El Hornero 18 (2): 77-88. https://doi.org/10.56178/eh.v18i2.846.
We present a review of the impact of brood parasitism by Shiny Cowbirds (Molothrus bonariensis) on the reproductive success of their hosts. We analysed the effect of parasitism on nest survival and on egg survival, hatching success and chick survival in successful nests. We also analysed the effect of the intensity of parasitism and egg pecking behaviour in unparasitized nests. Egg pecking produced the main impact of parasitism on host’s reproductive success. This behaviour also reduced host’s reproductive success in unparasitized nests. Parasitism decreased hatching success and chick survival only in hosts much smaller than the parasite. In these hosts, parasitism also increased the frequency of nest abandonment, generally as a result of the destruction of the majority of host’s eggs. The cost produced by egg pecking increased with intensity of parasitism. Considering that intensity and frequency of parasitism are tightly associated, the latter would be a good predictor of the impact that Shiny Cowbird’s parasitism might produce on the reproductive success of their hosts. We mention some aspects of the biology of the parasite and their hosts that we need to study in more detail to estimate the impact that brood parasitism produces on the viability of hosts’ populations.
ROTHSTEIN SI (1990) A model system for coevolution: avian brood parasitism. Annual Review of Ecology and Systematics 21:481–508
DAVIES NB (2000) Cuckoos, cowbirds and other cheats. Oxford University Press, Oxford
LANYON SM (1992) Interspecific brood parasitism in blackbirds (Icterinae): a phylogenetic perspective. Science 255:77–79
JOHNSON KP Y LANYON SM (1999) Molecular systematics of the grackles and allies, and the effect of additional sequence (Cyt b and ND2). Auk 116:759-768
ORTEGA C (1998) Cowbirds and other brood parasites. University of Arizona Press, Tucson
ROTHSTEIN SI Y ROBINSON SK (1998) The evolution and ecology of avian brood parasitism. Pp. 3–56 en: ROTHSTEIN SI Y ROBINSON SK (eds) Parasitic birds and their hosts: studies in coevolution. Oxford University Press, New York
HUDSON WH (1874) Notes on the procreant instincts of the three species of Molothrus found in Buenos Aires. Proceedings of the Zoological Society 11:153–174
HOY G Y OTTOW J (1964) Biological and oological studies of the molothrine cowbirds (Icteridae) of Argentina. Auk 81:186–203
SEALY SG (1992) Removal of Yellow Warbler eggs in association with cowbird parasitism. Condor 94:40–54
MASSONI V Y REBOREDA JC (2002) A neglected cost of brood parasitism: egg punctures by Shiny Cowbirds during inspection of potential host nests. Condor 104:407–411
CARTER MD (1986) The parasitic behavior of the Bronzed Cowbird (Molothrus aeneus) in south Texas, USA. Condor 88:11–25
PETIT LJ (1991) Adaptive tolerance of cowbird parasitism by Prothonotary Warblers. A consequence of nest-site limitation. Animal Behaviour 41:425–432
KING JR (1973) Reproductive relationships of the Rufous-collared Sparrow and the Shiny Cowbird. Auk 90:19–34
MARVIL RE Y CRUZ A (1989) Impact of Brown-headed Cowbird parasitism on the reproductive success of the Solitary Vireo. Auk 106:476–480
PAYNE RB Y PAYNE LL (1998) Brood parasitism by cowbirds: risks and effects on reproductive success and survival in Indigo Buntings. Behavioral Ecology 9:64–73
MASSONI V Y REBOREDA JC (1998) Costs of brood parasitism and the lack of defenses on the Yellow-winged Blackbird-Shiny Cowbird system. Behavioral Ecology and Sociobiology 42:273–280
CLOTFELTER ED Y YASUKAWA K (1999) The effect of aggregated nesting on Red-winged Blackbird nest success and brood parasitism by Brown-headed Cowbirds. Condor 101:729–736
MAY RM Y ROBINSON SK (1985) Population dynamics of avian brood parasitism. American Naturalist 130:161–167
PEASE CM Y GRZYBOWSKI JA (1995) Assessing the consequences of brood parasitism and nest predation on seasonal fecundity in passerine birds. Auk 112:343-363
TRINE CHL, ROBINSON WD Y ROBINSON SK (1998) Consequences of Brown-headed Cowbird parasitism for host population dynamics. Pp. 273–295 en: ROTHSTEIN SI Y ROBINSON SK (eds) Parasitic birds and their hosts: studies in coevolution. Oxford University Press, New York
ROBINSON SK, ROTHSTEIN SI, BRITTINGHAM MC, PETIT LJ Y GRZYBOWSKI JA (1995) Ecology and behaviour of cowbirds and their impact on host populations. Pp. 428–460 en: MARTIN TE Y FINCH DM (eds) Ecology and management of Neotropical migratory birds. Oxford University Press, New York
ROBINSON SK, THOMPSON III FR, DONOVAN TM, WHITEHEAD DR Y FAABORG J (1995) Regional forest fragmentation and the nesting success of migratory birds. Science 267:1987–1990
FRIEDMANN H Y KIFF LF (1985) The parasitic cowbirds and their hosts. Proceedings of the Western Foundation of Vertebrate Zoology 2:226–304
LOWTHER P Y POST W (1999) Shiny Cowbird (Molothrus bonariensis). Pp. 1-24 en: POOLE A Y GILL F (eds) The birds of North America. Academy of Natural Sciences y American Ornithologists’ Union, Philadelphia y Washington DC
FRAGA RM (2002) Notes on new or rarely reported Shiny Cowbird hosts from Argentina. Journal of Field Ornithology 73:213–219
FRIEDMANN H (1929) The cowbirds: a study in the biology of social parasitism. C. C. Thomas, Springfield
CRUZ A, MANOLIS T Y WILEY JW (1985) The Shiny Cowbird: a brood parasite expanding its range in the caribbean region. Ornithological Monographs 36:607–620
WILEY JW, POST W Y CRUZ A (1991) Conservation of the Yellow-shouldered Blackbird Agelaius xanthomus, an endangered West Indian Species. Biological Conservation 55:119–138
POST W, CRUZ A Y MCNAIR DB (1993) The North-American invasion pattern of the Shiny Cowbird. Journal of Field Ornithology 64:32–41
CRUZ A, POST W, WILEY JW, ORTEGA CP, NAKAMURA TK Y PRATHER JW (1998) Potential impacts of cowbird range expansion in Florida. Pp. 313–336 en: ROTHSTEIN SI Y ROBINSON SK (eds) Parasitic birds and their hosts: studies in coevolution. Oxford University Press, New York
FRAGA RM, CASAÑAS H Y PUGNALI G (1998) Natural history and conservation of the endangered Saffron-cowled Blackbird Xanthopsar flavus in Argentina. Bird Conservation International 8:255–267
BIRDLIFE INTERNATIONAL (2000) Threatened birds of the world. Lynx Edicions y BirdLife International, Barcelona y Cambridge
DE LA PEÑA MR (1995) Ciclo reproductivo de las aves argentinas. Primera parte. Universidad Nacional del Litoral, Santa Fe
CRUZ A Y ANDREWS RW (1997) The breeding biology of the Pied Water-Tyrant and its interactions with the Shiny Cowbird in Venezuela. Journal of Field Ornithology 68:91–97
KATTAN GH (1998) Impact of brood parasitism. Why do House Wrens accept Shiny Cowbird eggs? Pp. 212–220 en: ROTHSTEIN SI Y ROBINSON SK (eds) Parasitic birds and their hosts: studies in coevolution. Oxford University Press, New York
FRAGA RM (1985) Host-parasite interactions between Chalk-browed Mockingbirds and Shiny Cowbirds. Ornithological Monographs 36:829–844
MASON P (1986) Brood parasitism in a host generalist, the Shiny Cowbird (Molothrus bonariensis): II. Host selection. Auk 103:61–69
SACKMANN P Y REBOREDA JC (2003) A comparative study of Shiny Cowbird parasitism in two large hosts: Chalk-browed Mockingbird and Rufous-bellied Thrush. Condor 105:728–736
SALVADOR SA (1984) Estudio de parasitismo de cría del Renegrido (Molothrus bonariensis) en Calandria (Mimus saturninus) en Villa María, Córdoba. Hornero 12:141–149
LLAMBÍAS P (1999) Biología reproductiva del Zorzal Colorado, Turdus rufiventris: costos del parasitismo de cría del Tordo Renegrido, Molothrus bonariensis. Tesis de licenciatura, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires
FRAGA RM (1978) The Rufous-collared Sparrow as a host of the Shiny Cowbird. Wilson Bulletin 90:271–284
SICK H (1958) Notas biologicas sobre o gaudeiro, Molothrus bonariensis (Gmelin) (Icteridae, Aves). Revista Brasileira de Biologia 18:417–431
LYON BE (1997) Spatial patterns of Shiny Cowbird brood parasitism on Chestnut-capped Blackbirds. Animal Behaviour 54:927–939
MERMOZ ME (1996) Interacciones entre el Tordo Renegrido Molothrus bonariensis y el Pecho Amarillo Pseudoleistes virescens: estrategias del parásito de cría y mecanismos de defensa del hospedador. Tesis doctoral, Universidad de Buenos Aires, Buenos Aires
SIEGEL S Y CASTELLAN NJ (1988) Nonparametric statistics for the behavioral sciences. Segunda edición. McGraw-Hill, New York
MAYFIELD H (1975) Suggestions for calculating nest success. Wilson Bulletin 87:456–466
HINES JE Y SAUER R (1989) Program CONTRAST – A general program for the analysis of several survival or recovery rate estimates. US Fish and Wildlife Service Technical Report 24, Washington DC
MERMOZ ME Y REBOREDA JC (1994) Brood parasitism of the Shiny Cowbird, Molothrus bonariensis on the Brown-and-yellow Marshbird, Pseudoleistes virescens. Condor 96:716-721
MERMOZ ME Y REBOREDA JC (1999) Egg laying behavior by Shiny Cowbirds parasitizing Brown-and-yellow Marshbirds. Animal Behaviour 58:873–882
MERMOZ ME Y REBOREDA JC (1998) Nesting success in Brown-and-yellow Marshbirds: effects of time of the breeding season, nest site and brood parasitism. Auk 115:871–878
MASSONI V (2002) Parasitismo de cría del Tordo Renegrido sobre el Varillero Ala Amarilla. Tesis doctoral, Universidad de Buenos Aires, Buenos Aires
MERMOZ ME Y REBOREDA JC (2003) Reproductive success of Shiny Cowbird (Molothrus bonariensis) parasitizing the larger Brown-and-yellow Marshbird (Pseudoleistes virescens). Auk 120:1128–1139
FLEISCHER RC (1985) A new technique to identify and assess the dispersion of eggs of individual brood parasites. Behavioural Ecology and Sociobiology 17:91–99
ALDERSON GW, GIBBS HL Y SEALY SG (1999) Determining the reproductive behaviour of individual brown-headed cowbirds using microsatellite DNA markers. Animal Behaviour 58:895–905
ARCESE P, SMITH JNM Y HATCH MI (1996) Nest predation by cowbirds and its consequences for passerine demography. Proceedings of the National Academy of Sciences 93:4608–4611
MASSONI V Y REBOREDA JC (1999) Egg puncture allows shiny cowbirds to assess host egg development, and suitability for parasitism. Proceedings of the Royal Society of London B 266:1871–1874
MASON P (1986) Brood parasitism in a host generalist, the Shiny Cowbird (Molothrus bonariensis): I. The quality of different species as hosts. Auk 103:52–67
CRUZ A, MANOLIS TD Y ANDREWS RW (1990) Reproductive interactions of the Shiny Cowbird Molothrus bonariensis and the Yellow-hooded Blackbird Agelaius icterocephalus in Trinidad, West Indies. Ibis 132:436-444
