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Honza M, Koleček J, Piálek L, Piálková R, Požgayová M, Procházka P, Štětková G, Jelínek V, Hughes AE, Šulc M. Multiple parasitism in an evictor brood parasite: patterns revealed by long-term monitoring, continuous video recording, and genetic analyses. Behav Ecol Sociobiol 2022. [DOI: 10.1007/s00265-022-03270-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Koleček J, Piálková R, Piálek L, Šulc M, Hughes AE, Brlík V, Procházka P, Požgayová M, Capek M, Sosnovcová K, Štětková G, Valterová R, Honza M. Spatiotemporal patterns of egg laying in the common cuckoo. Anim Behav 2021. [DOI: 10.1016/j.anbehav.2021.04.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Marton A. Quintuple parasitism of a great reed warbler nest by common cuckoos. Ecol Evol 2021; 11:8420-8423. [PMID: 34257907 PMCID: PMC8258190 DOI: 10.1002/ece3.7669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/24/2021] [Accepted: 04/27/2021] [Indexed: 12/03/2022] Open
Abstract
Multiple parasitism in obligate avian brood parasites occurs when several brood parasitic females lay their eggs in the nest of the same host. While multiple parasitism is common in the highly social, nonevicting cowbird species (Molothrus sp.), in which multiple parasitic nestlings can be raised simultaneously by the same hosts, it is less common in the case of cuckoo species (Cuculus sp.). The first cuckoo nestling to hatch from the egg evicts all nestmates; therefore, it is costly for cuckoo females to lay eggs in already parasitized nests. However, this can occur in sites with very high parasitism rates, and it can even increase the breeding success of the brood parasites, as the presence of multiple parasitic eggs in the nest of the host decreases rejection rates. Here, we present a case of a quintuple brood parasitism of a great reed warbler (Acrocephalus arundinaceus) nest, an extreme form of multiple brood parasitism.
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Affiliation(s)
- Attila Marton
- Department of Evolutionary Zoology and Human BiologyUniversity of DebrecenDebrecenHungary
- Juhász‐Nagy Pál Doctoral SchoolUniversity of DebrecenDebrecenHungary
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Sex differences in learning flexibility in an avian brood parasite, the shiny cowbird. Behav Processes 2021; 189:104438. [PMID: 34087347 DOI: 10.1016/j.beproc.2021.104438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/04/2021] [Accepted: 05/28/2021] [Indexed: 02/05/2023]
Abstract
Females of brood parasitic shiny cowbirds, Molothrus bonariensis, search and prospect host nests, synchronizing parasitism with host laying. This behavior is sex-specific, as females perform this task without male's assistance. Host nests must be removed from the female's memory "library" after being parasitized, to avoid repeated parasitism, or when they become unavailable because of predation. Thus, females must adjust their stored information about host nest status more dynamically than males, possibly leading to differences in learning flexibility. We tested for sex differences in a visual (local cues) and a spatial discrimination reversal learning task, expecting females to outperform males as an expression of greater behavioral flexibility. Both sexes learned faster the spatial than the visual task during both acquisition and reversal. In the visual task there were no sex differences in acquisition, but females reversed faster than males. In the spatial task there were no sex differences during either acquisition or reversal, possibly because of a ceiling effect: both sexes learned too fast for differences in performance to be detectable. Faster female reversal in a visual but not spatial task indicates that the greater behavioral flexibility in females may only be detectable above some level of task difficulty.
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Ursino CA, Strong MJ, Reboreda JC, Riehl C. Genetic patterns of repeat and multiple parasitism by screaming cowbirds, a specialist brood parasite. Anim Behav 2020. [DOI: 10.1016/j.anbehav.2020.07.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hahn DC, Wingfield JC, Fox DM, Walker BG, Thomley JE. Maternal androgens in avian brood parasites and their hosts: Responses to parasitism and competition? Gen Comp Endocrinol 2017; 240:143-152. [PMID: 27746250 DOI: 10.1016/j.ygcen.2016.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 10/10/2016] [Accepted: 10/12/2016] [Indexed: 11/18/2022]
Abstract
In the coevolutionary dynamic of avian brood parasites and their hosts, maternal (or transgenerational) effects have rarely been investigated. We examined the potential role of elevated yolk testosterone in eggs of the principal brood parasite in North America, the brown-headed cowbird, and three of its frequent host species. Elevated maternal androgens in eggs are a common maternal effect observed in many avian species when breeding conditions are unfavorable. These steroids accelerate embryo development, shorten incubation period, increase nestling growth rate, and enhance begging vigor, all traits that can increase the survival of offspring. We hypothesized that elevated maternal androgens in host eggs are a defense against brood parasitism. Our second hypothesis was that elevated maternal androgens in cowbird eggs are a defense against intra-specific competition. For host species, we found that elevated yolk testosterone was correlated with parasitized nests of small species, those whose nest success is most reduced by cowbird parasitism. For cowbirds, we found that elevated yolk testosterone was correlated with eggs in multiply-parasitized nests, which indicate intra-specific competition for nests due to high cowbird density. We propose experimental work to further examine the use of maternal effects by cowbirds and their hosts.
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Affiliation(s)
- D Caldwell Hahn
- US Geological Survey, Patuxent Wildlife Research Center, Laurel, MD 20708, USA.
| | - John C Wingfield
- Dept. of Neurobiology, Physiology and Behavior, University of California, Davis, CA 95616 USA.
| | - David M Fox
- US National Parks Service, Jean Lafitte National Historical Park and Preserve, Marrero, LA 70072, USA.
| | - Brian G Walker
- Dept. of Biology, Fairfield University, Fairfield, CT 06824, USA.
| | - Jill E Thomley
- Dept. of Mathematical Sciences, Appalachian State University, Boone, NC 28608, USA.
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Louder MIM, Schelsky WM, Albores AN, Hoover JP. A generalist brood parasite modifies use of a host in response to reproductive success. Proc Biol Sci 2016; 282:rspb.2015.1615. [PMID: 26336180 DOI: 10.1098/rspb.2015.1615] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Avian obligate brood parasites, which rely solely on hosts to raise their young, should choose the highest quality hosts to maximize reproductive output. Brown-headed cowbirds (Molothrus ater) are extreme host generalists, yet female cowbirds could use information based on past reproductive outcomes to make egg-laying decisions thus minimizing fitness costs associated with parasitizing low-quality hosts. We use a long-term (21 years) nest-box study of a single host, the prothonotary warbler (Protonotaria citrea), to show that local cowbird reproductive success, but not host reproductive success, was positively correlated with the probability of parasitism the following year. Experimental manipulations of cowbird success corroborated that female cowbirds make future decisions about which hosts to use based on information pertaining to past cowbird success, both within and between years. The within-year pattern, in particular, points to local cowbird females selecting hosts based on past reproductive outcomes. This, coupled with high site fidelity of female cowbirds between years, points to information use, rather than cowbird natal returns alone, increasing parasitism rates on highly productive sites between years.
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Affiliation(s)
- Matthew I M Louder
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Wendy M Schelsky
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Amber N Albores
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Jeffrey P Hoover
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
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de la Colina MA, Hauber ME, Strausberger BM, Reboreda JC, Mahler B. Molecular tracking of individual host use in the Shiny Cowbird - a generalist brood parasite. Ecol Evol 2016; 6:4684-96. [PMID: 27547305 PMCID: PMC4979699 DOI: 10.1002/ece3.2234] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/13/2016] [Accepted: 05/16/2016] [Indexed: 11/07/2022] Open
Abstract
Generalist parasites exploit multiple host species at the population level, but the individual parasite's strategy may be either itself a generalist or a specialist pattern of host species use. Here, we studied the relationship between host availability and host use in the individual parasitism patterns of the Shiny Cowbird Molothrus bonariensis, a generalist avian obligate brood parasite that parasitizes an extreme range of hosts. Using five microsatellite markers and an 1120-bp fragment of the mtDNA control region, we reconstructed full-sibling groups from 359 cowbird eggs and chicks found in nests of the two most frequent hosts in our study area, the Chalk-browed Mockingbird Mimus saturninus and the House Wren Troglodytes aedon. We were able to infer the laying behavior of 17 different females a posteriori and found that they were mostly faithful to a particular laying area and host species along the entire reproductive season and did not avoid using previously parasitized nests (multiple parasitism) even when other nests were available for parasitism. Moreover, we found females using the same host nest more than once (repeated parasitism), which had not been previously reported for this species. We also found few females parasitizing more than one host species. The use of an alternative host was not related to the main hosts' nest availability. Overall, female shiny cowbirds use a spatially structured and host species specific approach for parasitism, but they do so nonexclusively, resulting in both detectable levels of multiple parasitism and generalism at the level of individual parasites.
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Affiliation(s)
- Ma Alicia de la Colina
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Buenos Aires Argentina
| | - Mark E Hauber
- Department of Psychology Hunter College and the Graduate Center of the City University of New York 695 Park Avenue New York New York 10065; School of Biological Sciences University of Auckland 3A Symonds Street PB 92019 Auckland New Zealand
| | - Bill M Strausberger
- Pritzker Laboratory for Molecular Systematics and Evolution Field Museum of Natural History 1400 S. Lake Shore Drive Chicago Illinois 60605
| | - Juan Carlos Reboreda
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Buenos Aires Argentina
| | - Bettina Mahler
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Buenos Aires Argentina
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Astié AA, Scardamaglia RC, Muzio RN, Reboreda JC. Sex differences in retention after a visual or a spatial discrimination learning task in brood parasitic shiny cowbirds. Behav Processes 2015; 119:99-104. [DOI: 10.1016/j.beproc.2015.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/31/2015] [Accepted: 07/31/2015] [Indexed: 01/30/2023]
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Domínguez M, de la Colina MA, Di Giacomo AG, Reboreda JC, Mahler B. Host switching in cowbird brood parasites: how often does it occur? J Evol Biol 2015; 28:1290-7. [PMID: 25903962 DOI: 10.1111/jeb.12649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 04/08/2015] [Accepted: 04/20/2015] [Indexed: 11/30/2022]
Abstract
Avian obligate brood parasites lay their eggs in nests of host species, which provide all parental care. Brood parasites may be host specialists, if they use one or a few host species, or host generalists, if they parasitize many hosts. Within the latter, strains of host-specific females might coexist. Although females preferentially parasitize one host, they may occasionally successfully parasitize the nest of another species. These host switching events allow the colonization of new hosts and the expansion of brood parasites into new areas. In this study, we analyse host switching in two parasitic cowbirds, the specialist screaming cowbird (Molothrus rufoaxillaris) and the generalist shiny cowbird (M. bonariensis), and compare the frequency of host switches between these species with different parasitism strategies. Contrary to expected, host switches did not occur more frequently in the generalist than in the specialist brood parasite. We also found that migration between hosts was asymmetrical in most cases and host switches towards one host were more recurrent than backwards, thus differing among hosts within the same species. This might depend on a combination of factors including the rate at which females lay eggs in nests of alternative hosts, fledging success of the chicks in this new host and their subsequent success in parasitizing it.
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Affiliation(s)
- M Domínguez
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - M A de la Colina
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - A G Di Giacomo
- Departamento de Conservación, Aves Argentinas/Asociación Ornitológica del Plata, Buenos Aires, Argentina
| | - J C Reboreda
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - B Mahler
- Departamento de Ecología, Genética y Evolución, and IEGEBA-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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Janecka MJ, Brush T. Differential response by bronzed cowbirds to songs of potential hosts in the lower Rio Grande Valley of Texas. SOUTHWEST NAT 2014. [DOI: 10.1894/ekl-03.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Shiny cowbirds share foster mothers but not true mothers in multiply parasitized mockingbird nests. Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-014-1682-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Goguen C, Curson D, Mathews N. Costs of multiple parasitism for an avian brood parasite, the Brown-headed Cowbird (Molothrus ater). CAN J ZOOL 2011. [DOI: 10.1139/z11-104] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Brown-headed Cowbird ( Molothrus ater (Boddaert, 1783)) is a generalist brood parasite that often lays into nests that contain conspecific eggs. Although it has often been assumed that this multiple parasitism reduces Cowbird survival, this has rarely been evaluated. We measured Cowbird survival in nests of the Blue-gray Gnatcatcher ( Polioptila caerulea (L., 1766)), Plumbeous Vireo ( Vireo plumbeus Coues, 1866), and Western Tanager ( Piranga ludoviciana (A. Wilson, 1811)) in New Mexico, USA. Our objectives were to measure the costs of intraspecific competition on Cowbird survival in multiply-parasitized nests, evaluate if these costs were related to host size, and to compare the costs of multiple parasitism relative to other mortality sources that occur over the entire nesting cycle. Intraspecific competition reduced Cowbird survival during the nestling period in nests of all three hosts, and was of particular importance in nests of the two smaller hosts. When all sources of egg mortality were considered, however, the costs of multiple parasitism were small compared with the large effects of predation and nest desertion. Given that multiple parasitism reduces Cowbird egg survival, it is unclear why Cowbirds multiply-parasitize. Possible explanations depend on an improved understanding of fecundity and level of host nest selectivity by female Cowbirds.
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Affiliation(s)
- C.B. Goguen
- Science Program, The Pennsylvania State University, 76 University Drive, Hazleton, PA 18202, USA
| | - D.R. Curson
- Audubon Maryland-DC, 2901 East Baltimore Street, Baltimore, MD 21224, USA
| | - N.E. Mathews
- Nelson Institute for Environmental Studies, University of Wisconsin, 115E Science Hall, Madison, WI 53706, USA
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Zanette L, Clinchy M. Food supplementation leads to bottom-up and top-down food-host-parasite interactions. J Anim Ecol 2010; 79:1172-80. [DOI: 10.1111/j.1365-2656.2010.01724.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Curson DR, Goguen CB, Mathews NE. Community-level patterns of population recruitment in a generalist avian brood parasite, the brown-headed cowbird. Oecologia 2010; 163:601-12. [PMID: 20422223 DOI: 10.1007/s00442-010-1630-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2009] [Accepted: 03/29/2010] [Indexed: 11/29/2022]
Abstract
The brown-headed cowbird (Molothrus ater) is a generalist brood parasite that typically parasitizes many host species in a single bird community. Population recruitment in a generalist parasite should be diverse with respect to host species; however, host-specific rates of cowbird recruitment have not been reported in any host community, and the determinants of host quality are poorly known. We studied the combined influence of parasitism level, nest abundance, and host quality on community-level patterns of cowbird recruitment in New Mexico, USA. Our objectives were to: (1) evaluate patterns of host use and quality; (2) compare cowbird egg investment and recruitment among host species; (3) identify host species of most importance to cowbird recruitment. Cowbirds parasitized 11 host species, with five "major" hosts experiencing high parasitism levels (>or=1 cowbird egg/nest) and six minor hosts experiencing low parasitism levels (<0.3 cowbird eggs/nest). Parasitism level was not correlated with host species abundance, host mass, host nestling period length, or host success at fledging cowbirds. However, tree-nesting hosts were parasitized more than ground-nesters, and foliage-gleaners more than sally-foragers and ground-foragers. Average estimated survival to fledging of cowbird eggs laid in active host nests was 0.19. Cowbird recruitment was diverse with respect to hosts but was less evenly distributed across the host community than was cowbird egg investment because western tanagers (Piranga ludovicianus) fledged cowbirds more successfully than other hosts. This success in western tanagers was due to high cowbird survivorship in tanager nests and may be associated with the larger body size of tanagers relative to other hosts.
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De Mársico MC, Mahler B, Chomnalez M, Di Giácomo AG, Reboreda JC. Host Use by Generalist and Specialist Brood-Parasitic Cowbirds at Population and Individual Levels. ADVANCES IN THE STUDY OF BEHAVIOR 2010. [DOI: 10.1016/s0065-3454(10)42003-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Moskát C, Hauber ME, Avilés JM, Bán M, Hargitai R, Honza M. Increased host tolerance of multiple cuckoo eggs leads to higher fledging success of the brood parasite. Anim Behav 2009. [DOI: 10.1016/j.anbehav.2009.01.030] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mahler B, Sarquis Adamson Y, Di Giacomo AG, Confalonieri VA, Reboreda JC. Utilization of a new host in the screaming cowbird Molothrus rufoaxillaris, a host specialist brood parasite: host switch or host acquisition? Behav Ecol Sociobiol 2009. [DOI: 10.1007/s00265-009-0755-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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De Mársico MC, Reboreda JC. Differential reproductive success favours strong host preference in a highly specialized brood parasite. Proc Biol Sci 2008; 275:2499-506. [PMID: 18647716 PMCID: PMC2603199 DOI: 10.1098/rspb.2008.0700] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Obligate avian brood parasites show dramatic variation in the degree to which they are host specialists or host generalists. The screaming cowbird Molothrus rufoaxillaris is one of the most specialized brood parasites, using a single host, the bay-winged cowbird (Agelaioides badius) over most of its range. Coevolutionary theory predicts increasing host specificity the longer the parasite interacts with a particular avian community, as hosts evolve defences that the parasite cannot counteract. According to this view, host specificity can be maintained if screaming cowbirds avoid parasitizing potentially suitable hosts that have developed effective defences against parasitic females or eggs. Specialization may also be favoured, even in the absence of host defences, if the parasite's reproductive success in alternative hosts is lower than that in the main host. We experimentally tested these hypotheses using as alternative hosts two suitable but unparasitized species: house wrens (Troglodytes aedon) and chalk-browed mockingbirds (Mimus saturninus). We assessed host defences against parasitic females and eggs, and reproductive success of the parasite in current and alternative hosts. Alternative hosts did not discriminate against screaming cowbird females or eggs. Egg survival and hatching success were similarly high in current and alternative hosts, but the survival of parasitic chicks was significantly lower in alternative hosts. Our results indicate that screaming cowbirds have the potential to colonize novel hosts, but higher reproductive success in the current host may favour host fidelity.
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Affiliation(s)
- María C De Mársico
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II Ciudad Universitaria, C1428EGA Buenos Aires, Argentina.
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