Egg puncturing by the brood parasitic Greater Honeyguide and potential host counteradaptations
نویسندگان
چکیده
منابع مشابه
Internal incubation and early hatching in brood parasitic birds.
The offspring of brood parasitic birds benefit from hatching earlier than host young. A proposed but little-known strategy to achieve this is 'internal incubation', by retaining the egg in the oviduct for an additional 24 h. To test this, we quantified the stage of embryo development at laying in four brood parasitic birds (European cuckoo, Cuculus canorus; African cuckoo, Cuculus gularis; grea...
متن کاملIncomplete reproductive isolation following host shift in brood parasitic indigobirds.
Behavioural and molecular studies suggest that brood parasitic indigobirds (Vidua spp.) rapidly diversified through a process of speciation by host shift. However, behavioural imprinting on host song, the key mechanism promoting speciation in this system, may also lead to hybridization and gene flow among established indigobird species when and if female indigobirds parasitize hosts already ass...
متن کاملAncient host specificity within a single species of brood parasitic bird.
Parasites that exploit multiple hosts often experience diversifying selection for host-specific adaptations. This can result in multiple strains of host specialists coexisting within a single parasitic species. A long-standing conundrum is how such sympatric host races can be maintained within a single parasitic species in the face of interbreeding among conspecifics specializing on different h...
متن کاملThe sight of an adult brood parasite near the nest is an insufficient cue for a honeyguide host to reject foreign eggs
Hosts of brood-parasitic birds typically evolve anti-parasitism defences, including mobbing of parasitic intruders at the nest and the ability to recognize and reject foreign eggs from their clutches. The Greater Honeyguide Indicator indicator is a virulent brood parasite that punctures host eggs and kills host young, and accordingly, a common host, the Little Bee-eater Merops pusillus frequent...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2007
ISSN: 1045-2249,1465-7279
DOI: 10.1093/beheco/arm025