Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"brood parasites"”.
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Frontline interactions between avian interspecific brood parasites and their hosts
… and evolution of the interactions between avian brood parasites and their hosts. Evidence of coevolution, reciprocal evolution, between avian interspecific brood parasites and hosts is evident at all stages of the host nesting cycle. The first chapter of this thesis presents a broad literature …
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Frontline interactions between avian interspecific brood parasites and their hosts
… and evolution of the interactions between avian brood parasites and their hosts. Evidence of coevolution, reciprocal evolution, between avian interspecific brood parasites and hosts is evident at all stages of the host nesting cycle. The first chapter of this thesis presents a broad literature …
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Avian brood parasitism as a model system for studying multispecies interactions
The relationships between avian brood parasites and their hosts are widely recognised as model systems for studying coevolution. Through the examination of tractable interactions between one species of brood parasite and one species of host, important insights have been gained on the processes that …
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Nesting aggregation as a Determinant of Brood Parasitism in Mason Bees (Osmia spp.)
… systems and are vulnerable to exploitation by brood parasites, such as kleptoparasitic wasps. High levels of nesting density have the potential to increase rates of brood parasitism by attracting larger numbers of parasites to areas with aggregations of nests. I conducted a field study in …
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Coevolutionary causes and consequences of high-fidelity mimicry by a specialist brood parasite
… is particularly evident in avian interspecific brood parasites, which are birds that lay their eggs in the nests of other species, or ‘hosts'. A possible rare example of a “perfect mimic” is the African cuckoo Cuculus gularis (a specialist parasite of fork-tailed drongos Dicrurus adsimilis) …
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Coevolution between brood-parasitic honeyguides and their hosts
Obligate brood parasites lay their eggs in the nests of other species, foisting the costs of parental care onto the host parents. The success of the parasite and host are then at odds, with both parties evolving defences and countermeasures in an evolutionary arms race. This reciprocal influence of …
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Acoustic manipulation by brood-parasitic honeyguide
Brood-parasitic birds lay their eggs in the nests of other species (‘hosts'), and their chicks encounter the challenge of acquiring sufficient food from host parents. Many parasitic chicks require more food than host chicks, and so need to elicit high rates of provisioning through their begging …
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Behavioral ecology of juvenile brown-headed cowbirds: implications for the evolution and maintenance of avian brood parasitism
Avian interspecific brood parasites are species that forego parental care and rely on heterospecifics to raise parasitic offspring. Host-parasite coevolutionary arms races and the constraints associated with a non-parasitic bird transitioning to a parasite likely contribute to the rarity of this …
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Age-specific mortality, pre- to post-fledging carryover effects, and the timing of fledging in altricial songbirds
… and (3) determine if carryover effects occur in brood parasitic cowbirds. I found evidence for pre- to post-fledging carryover effects of wing development in all species I examined, with individuals with less developed wings exhibiting poorer flight ability and experiencing higher rates of …