title: From parasitism to mutualism: unexpected interactions between a cuckoo and its host.
abstract: Avian brood parasites lay eggs in the nests of other birds, which raise the unrelated chicks and typically suffer partial or complete loss of their own brood. However, carrion crows Corvus corone corone can benefit from parasitism by the great spotted cuckoo Clamator glandarius. Parasitized nests have lower rates of predation-induced failure due to production of a repellent secretion by cuckoo chicks, but among nests that are successful, those with cuckoo chicks fledge fewer crows. The outcome of these counterbalancing effects fluctuates between parasitism and mutualism each season, depending on the intensity of predation pressure.
authors.affiliation: Department of Biology of Organisms and Systems, University of Oviedo, Oviedo, Spain.
authors.forename: Daniela
authors.initials: D
authors.lastname: Canestrari
authors.forename: Diana
authors.initials: D
authors.lastname: Bolopo
authors.forename: Ted C J
authors.initials: TC
authors.lastname: Turlings
authors.forename: Gregory
authors.initials: G
authors.lastname: Röder
authors.forename: José M
authors.initials: JM
authors.lastname: Marcos
authors.forename: Vittorio
authors.initials: V
authors.lastname: Baglione
mesh_terms: D000143:Acids / Q000032:analysis / Q000378:metabolism; D000818:Animals; D001717:Birds / Q000254:growth & development / Q000502:physiology*; D012634:Bodily Secretions / Q000737:chemistry; D046368:Crows / Q000254:growth & development / Q000502:physiology*; D005260:Female; D007211:Indoles / Q000032:analysis / Q000378:metabolism; D008297:Male; D009425:Nesting Behavior; D010636:Phenols / Q000032:analysis / Q000378:metabolism; D011235:Predatory Behavior; D012098:Reproduction; D013457:Sulfur Compounds / Q000032:analysis / Q000378:metabolism; D013559:Symbiosis; D014835:Volatilization
chemical_list: D000143:Acids; D007211:Indoles; D010636:Phenols; D013457:Sulfur Compounds