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Impacts of brood parasitism by shiny cowbird Molothrus bonariensis on the breeding success of a small host, the black-backed water tyrant Fluvicola albiventer

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Current Zoology 2024年第4期70卷 539-547页

作者： Lorena Vanesa Sovrano Evelina Jesica Leon Rodrigo Ezequiel Lorenzón Pamela Fernanda Olguin Adolfo Héctor Beltzer Alejandro Raúl Giraudo Laboratorio de Biodiversidad y Conservacion de Tetrapodos Instituto Nacional de Limnologia(INALICONICET-UNL)Paraje El Pozo s/nSanta Fe(3000)Argentina Departamento de Biologia Universidad Autonoma de Entre RiosKm 10.5 RP 11Oro Verde(3100)Entre RiosArgentina Departamento de Biologia Universidad Nacional del LitoralFacultad de Humanidades y CienciasParaje Ei Pozo s/nSanta Fe(3000)Argentina

The shiny cowbird Molothrus bonariensis parasitizes many species with different life-history traits and has a detrimental effect on the survival of the progeny of the *** response,hosts have developed numerous antiparasitic ***,we examined the effects of brood parasitism by shiny cowbird on the clutch and brood sizes(83 nests)in a small host,the black-backed water tyrant Fluvicola *** also studied whether the death of parasite nestlings was related to the care of the foster parents and whether the host had any antiparasitic defense against the shiny *** results indicate that brood parasitism significantly decreased the host hatching and fledging *** majority of nest failures(57%)were caused by brood *** cowbird parasitism occurred in 52%of nests and the intensity of parasitism was 1.23±0.53 eggs per parasitized *** the total host eggs,54%were *** the incubation stage,20 nests(47%)were abandoned because of egg punctures by shiny cowbirds *** two parasitic fledglings were recorded,while the remaining nestlings either died from starvation(n=12)or predation(n=3).Foster parents abandoned parasitic nestlings between 5 and 10 days *** findings demonstrate that the shiny cowbird has very low rates of fledging success when parasitizing black-backed water ***,parasitism had a high reproductive cost in the black-backed water tyrant because a very low proportion(7%)of the parasitized nests(n=43)were successful.

关键词： brood parasitism host defenses nest desertion shiny cowbird small host.

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From micro-to macroevolution:brood parasitism as a driver of phenotypic diversity in birds

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Current Zoology 2020年第5期66卷 515-526页

作者： Iliana Medina Rebecca M.Kilner Naomi E.Langmore School of BioSciences University of MelbourneVictoria3010Australia Department of Zoology University of CambridgeCambridgeCB23EJUK Division of Ecology and Evolution Australian National UniversityCanberraACT 2600Australia

A fun dame ntal question in biology is how diversity evolves and why some clades are more diverse than *** diversity has often been shown to result from morphological adaptation to different *** role of behavioral interactions as a driver of broadscale phenotypic diversity has received comparatively less *** interactions,however,are a key agent of natural *** behavioral interactions with predators or with parasites can have significant fitness consequences,and hence act as strong evolutionary forces on the phe no type of species,ultimately gen erating diversity betwee n species of both victims and *** obligate brood parasites lay their eggs in the nests of other species,their hosts,and this behavioral interaction between hosts and parasites is often considered one of the best examples of coevolution in the natural *** this review,we use the coevolution between brood parasites and their hosts to illustrate the potential of behavioral interactions to drive evolution of phenotypic diversity at different taxonomic *** provide a bridge between behavioral ecology and macroevolution by describing how this interaction has increased avian phenotypic diversity not only in the brood parasitic clades but also in their hosts.

关键词： brood parasitism coevolution diversity phenotypic variation macroevolution

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Australian cuckoos and their adaptations for brood parasitism

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Chinese Birds 2013年第1期4卷 86-92页

作者： Naomi E.LANGMORE 澳大利亚国立大学生物学研究学院

The strategies used by parasitic cuckoos to fool their hosts have intrigued naturalists and ornithologists for centuries. Here I review some of the tricks used by Australian parasitic cuckoos to increase host nest availability, access host nests, and fool their hosts into accepting their eggs and chicks. Some of these strategies are widely used by cuckoo species around the world, but other traits, such as cryptic eggs and mimetic chicks, appear to be largely restricted to the Australasian cuckoos. Generalist cuckoos face greater challenges than specialists if they must fool multiple host species, and this provides a possible explanation for why different species of cuckoos have evolved different strategies for host deception.

关键词： brood parasitism coevolution crypsis cuckoo mimicry

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A novel method to collect sperm from brood parasitic cuckoos:Urodeum stimulation(UroS)method

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Avian Research 2023年第2期14卷 298-303页

作者： Heesoo Lee Hae-Ni Kim Jun-Seo Go Myeong-Chan Cha Seongho Yun Sue-Jeong Jin Jin-Won Lee Jeong-Chil Yoo Korea Institute of Ornithology Kyung Hee UniversitySeoul02447Republic of Korea Department of Biology Kyung Hee UniversitySeoul02447Republic of Korea

Sperm competition has been studied in numerous species as a representative example of postcopulatory sexual selection,where sampling sperm from male is the most basic and important *** collection can be tricky in birds,however,because unlike mammals,the genitals of birds are generally latent in the cloacal region and their characteristics vary among *** methods to collect sperm from different birds have been tested,such as cloacal massage,feces collection,and electro-stimulation,but their applicability varies depending on *** this study,we introduced the urodeum stimulation method(UroS method)to collect sperm from Cuculus cuckoos,such as the Common Cuckoo(***).These species are expected to have interesting patterns of pair bonding and sperm competition because of their unique breeding strategy called brood parasitism;however,it remains *** this study,we described the application of our new method to expel semen from male common cuckoos,measured the volume of semen collected,checked the presence of sperm in the semen sample,and finally estimated its success rate among 82 *** were successfully collected from 76 cuckoos(approximately 93%)and the colors and volumes of the samples were very *** was present in 43 of these samples(57%),showing a sperm observation rate approximately twice as high as that of the conventional cloacal massage *** believe that this novel method will contribute to a better understanding of postcopulatory sexual selection in avian brood parasites and facilitate the process of sperm collection and artificial insemination in other medium-sized birds.

关键词： brood parasitism Cuculus cuckoos Semen collection Sexual selection Sperm competition

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Coevolution of acoustical communication between obligate avian brood parasites and their hosts

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Avian Research 2020年第4期11卷 367-379页

作者： Jiaojiao Wang Qihong Li Canchao Yang College of Life Sciences Hainan Normal UniversityHaikou 571158China

The mutually antagonistic processes producing adaptations and counter-adaptations in avian brood parasites and their hosts provide a model system for the study of coevolution;this topic has long been an area of focus in ornithology and evolutionary *** there is an extensive body of literature dealing with avian brood parasitism,few empirical studies have considered the effects of the coevolutionary processes associated with brood parasitism on the acoustic characteristics of parent–offspring *** the strong selection pressures associated with brood parasitism,parasitic birds may,for instance,produce deceptive *** host may in turn evolve the ability to recognize these sounds as *** present,the mechanisms underlying the different competitive strategies employed by hosts and parasitic birds remain ***,we reviewed previous studies that investigated acoustic traits in scenarios of brood parasitism,highlighting possible adaptive *** a meta-analysis,we identified no heterogeneity among studies of begging call adaptations in parasitic ***,our results may have been affected by the small number of applicable papers available for *** meta-analysis also suggested that studies of acoustic communication and transmission in adult hosts were highly heterogenous,suggesting that research methods were inconsistent among ***,we identified knowledge gaps and proposed several lines of future research.

关键词： Acoustic communication brood parasitism Coevolution Parasitic adaptations Anti-parasitic adaptations

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Do brood parasitic Common Cuckoos develop brood patches during the breeding season?

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Avian Research 2024年第3期15卷 363-368页

作者： Jun-Seo Go Hae-Ni Kim Sue-Jeong Jin Myeong-Chan Cha Heesoo Lee Jin-Won Lee Korea Institute of Ornithology&Department of Biology Kyung Hee University02447SeoulRepublic of Korea Bird Research SaeZiP 12504YangpyeongRepublic of Korea

Many birds develop brood patches on their ventral apterium under hormonal regulation to effectively transmit body heat to eggs during *** developed patch has several characteristics,including de-feathering,vascularization,and ***,little is known about whether avian brood parasites that do not incubate their eggs exhibit brood patch development during the breeding *** this study,we measured the size of the ventral apterium in 114 Common Cuckoos(Cuculus canorus)captured in the field throughout the breeding season and examined the appearance of the ventral apterium to confirm the development of brood *** also examined whether morphological traits and various factors correlated with the size of the ventral apterium(sternal apterium and abdominal apterium)and how it changed during the breeding *** found no clear signs of brood patch development in Common Cuckoos captured throughout the breeding season,indicating that they likely did not develop brood patches on the ventral apterium during this *** also found that ventral apterium size was positively correlated with wing length and body *** addition,Common Cuckoos with newly growing feathers on the boundary of the ventral apterium with pteryla were frequently observed as seasons progressed to the *** conclusion,Common Cuckoos exhibit neither brood patch development nor the vestigial characteristics of ancestral brood patches,except for the growth of feathers on boundary the ventral *** studies examining brood patches across different groups of avian brood parasites are valuable for enhancing our understanding of the developmental and physiological adaptations of avian brood parasites.

关键词： brood parasitism brood patch Common Cuckoo Pterylosis Re-feathering Ventral apterium

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Linking individual attributes and host specialization in brood parasitic cuckoos

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Avian Research 2022年第2期13卷 145-151页

作者： Sue-Jeong Jin Hae-Ni Kim Geun-Won Bae Jin-Won Lee Jeong-Chil Yoo Korea Institute of Ornithology Kyung Hee UniversitySeoul02447Republic of Korea Department of Biology Kyung Hee UniversitySeoul02447Republic of Korea

Generalist avian brood parasites vary considerably in their degree of host specialization(e.g.,number of hosts);some parasitize the nests of just a few host species,whereas others exploit more than 100 *** factors,including habitat range,habitat type,and geographic location,have been suggested to account for these ***,inter-specific differences in individual attributes,such as personality and plasticity,have rarely been considered as potential factors of such variation,despite their potential relationship to,for example,range *** cage experiments,we tested the hypothesis that parasitic species exploiting more host species may be more active and *** this end,we quantified behaviors exhibited by two Cuculus cuckoos(Common Cuckoo *** and Oriental Cuckoo ***)that vary greatly in their number of host ***,we evaluated exploratory behavior displayed by birds in the cage,such as the number of movements,head-turning,wing-flapping,and *** Common Cuckoo,which has a higher number of host species,tended to exhibit higher levels of exploratory behaviors than the Oriental *** study showed that the two cuckoo species exhibited different exploratory levels,as predicted by the differences in their number of *** studies regarding the causality between individual attributes and host specialization with improved experimental methodology would greatly enhance our understanding of the role of individual characteristics in the coevolution of avian brood parasites and their hosts.

关键词： brood parasitism Common Cuckoo Individual attributes Number of hosts Oriental Cuckoo

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Imperfect mimicry of host begging calls by a brood parasitic cuckoo:a cue for nestling rejection by hosts?

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Current Zoology 2021年第6期67卷 665-674页

作者： Hee-Jin NOH Ros GLOAG Ana V.LEITAO Naomi E.LANGMORE Research School of Biology Australian National UniversityCanberra ACT 0200Australia School of Life and Environmental Sciences University of SydneySydneyNSW 2006Australia School of Biosciences University of MelbourneParkville VIC 3010Australia

Coevolutionary interactions between avian brood parasites and their hosts often lead to the evolution of discrimination and rejection of parasite eggs or chicks by hosts based on visual cues,and the evolution of visual mimicry of host eggs or chicks by brood *** may also base rejection of brood parasite nestlings on vocal cues,which would in turn select for mimicry of host begging calls in brood parasite *** cuckoos that exploit multiple hosts with different begging calls,call structure may be plastic,allowing nestlings to modify their calls to match those of their various hosts,or fixed,in which case we would predict either imperfect mimicry or divergence of the species into host-specific *** our study of the little bronze-cuckoo(LBC)Chalcites minutillus and its primary host,the large-billed gerygone Gerygone magnirostris,we tested whether:(1)hosts use nestling vocalizations as a cue to discriminate cuckoo chicks;(2)cuckoo nestlings mimic the host begging calls throughout the nestling period;and(3)the cuckoo begging calls are plastic,thereby facilitating mimicry of the calls of different *** found that the begging calls of LBCs are most similar to their gerygone hosts shortly after hatching(when rejection by hosts typically occurs)but become less similar as cuckoo chicks get *** call structure may be used as a cue for rejection by hosts,and these results are consistent with gerygone defenses selecting for age-specific vocal mimicry in cuckoo *** found no evidence that LBC begging calls were plastic.

关键词： begging call bronze-cuckoo brood parasitism coevolution gerygone

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Threat recognition and response in an avian brood-parasite host from New Caledonia

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Current Zoology 2021年第3期67卷 255-262页

作者： Alfredo Attisaino Kasper Hlebowicz Roman Gula Jorn Theuerkauf Museum and Institute of Zoology Polish Academy of SciencesWarsawPoland Conservation Research New Caledonia La FoaNew Caledonia

Nest predation and avian brood parasitism are the main sources of nest failure in many passerine *** predators threaten both brood and parents,whereas brood parasites pose only a danger to eggs or *** fan-tailed gerygone Gerygone flavolateralis from New Caledonia is subjected to high rates of nest predation by the New Caledonian crow Corvus moneduloides(responsible for about 20-40%of predation)and moderate rates of brood parasitism by the shining bronze-cuckoo Chalcites lucidus(parasitizing about 18%of nests),which also depredates nests that are too advanced for parasitism(13%of nests).To test if fan-tailed gerygones are able to discriminate predators from brood parasites,we presented 3 bird models at active gerygone nests:a brood parasite/small nest predator(shining bronze-cuckoo),a large nest predator(crow),and a small non-native bird(common chaffinch Fringilla coelebs),which is unknown to the gerygone,as a *** assessed the response of adult gerygones to the presentation of each model by measuring the minimum approach distance,number of alarm calls,number of attacks,and time to first nest visit after the presentation(latency).Adult gerygones often attacked the cuckoo,approached but never attacked the chaffinch and always avoided the *** was shorter after an attack response and during brooding,but similar among *** did not find any link between the cuckoo model presentation and later ejection of cuckoo *** conclude that adult fan-tailed gerygones discriminate between different models and respond accordingly to the level of threat but do not show awareness of parasitism risk and increase of nestling ejection rates following exposure to the cuckoo model.

关键词： brood parasitism enemy recognition frontline defense mobbing nest defense nest predation

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Lack of response to conspecific juvenile vocalizations in two avian brood parasites

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Current Zoology 2024年第5期70卷 589-595页

作者： Rocío Prieto María Cecilia De Mársico Juan C.Reboreda Romina C.Scardamaglia Departamento de Ecología Genética y Evolución and IEGEBA-UBA-CONICETFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresPabellón II Ciudad UniversitariaC1428EGA Buenos AiresArgentina

Juveniles of interspecific avian brood parasites need to locate and recognize conspecifics to continue their life cycle after being reared by individuals of another ***,little is known about the recognition mechanisms and cues involved in this critical stage of their *** has been proposed that adult parasites could show some kind of parental behavior by actively searching and interacting with conspecific young,which in turn could serve the juveniles to learn and/or reinforce the learning of conspecific *** acoustic communication is one of the main channels used by birds,if such form of parental behavior by adult avian brood parasites does exist,adult cowbirds should recognize and respond positively to vocalizations of conspecific *** experimentally tested whether adult shiny Molothrus bonariensis and screaming *** cowbirds respond positively towards acoustic signals of conspecific juveniles using two playback experiments,one conducted in semi-captivity and the other in the *** both cases,we presented 3 types of playbacks to adults of both cowbird species:vocalizations of shiny cowbird juveniles,vocalizations of screaming cowbird juveniles,and white noise as a *** the experiment in semi-captivity,no significant differences were found between *** the field experiment,no conspecifics approached the playback area,but hosts of the species whose playback was played were attracted to the *** conclusion,our results do not support the predictions we tested from the parental behavior hypothesis and indicate that adult shiny and screaming cowbirds do not respond positively to acoustic signals of conspecific juveniles,at least not to the type of signals used in our experiments.

关键词： brood parasitism fledglings Molothrus parental behavior hypothesis vocal recognition

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