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 7 of 7 for “"nest defence"”.
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Exploiters and exploited: antagonism, mutualism and mimicry in an ecological community
… how drongos are exploited by cuckoos and nest predators, while simultaneously exploiting other heterospecifics into aiding them to defend their nest. Chapter 1 introduces the rationale of studying antagonism in a broader context. Chapter 2 integrates evidence from diverse antagonistic …
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The neurobiology of central dopamine and progesterone in the reproductive cycle of the ring dove (Streptopelia risoria)
… to mediate the expression of parental defence behaviours. Immunofluorescence studies revealed no co-localisation of progesterone receptor (PR-fr) in TM-fr cells, but demonstrated the presence of TH-fr terminals in axosomatic contact with PR-fr-containing cells in the preoptic region, …
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Vocal mimicry in the brown thornbill
… if mimetic vocalisations function in preventing nest predation. Both male and female thornbills are capable of mimicking a range of different vocalisations, including heterospecific contact calls, songs, and alarm calls. Mimetic vocalizations also varied greatly in acoustic structure: both high …
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Vocal mimicry in the brown thornbill
… if mimetic vocalisations function in preventing nest predation. Both male and female thornbills are capable of mimicking a range of different vocalisations, including heterospecific contact calls, songs, and alarm calls. Mimetic vocalizations also varied greatly in acoustic structure: both high …
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Dedicated dads: a study on the nesting behaviour of Spondyliosoma emarginatum (Telostei: Sparidae)
… This study used video monitoring to uncover the nesting behaviour of an endemic southern African species of the Sparidae family, Spondyliosoma emarginatum (steentjie). S. emarginatum has evolved a nesting strategy by which males create nests on the seafloor for females to lay their eggs in. The …
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Life history of marine threespine stickleback in Oyster Lagoon, British Columbia
… migration and growth, reproduction, and nesting success were examined for this purely marine population. Morphology analysis of 11 characters on 80 males and 80 females from Oyster Lagoon indicate that this marine population is similar to many populations of three spine sticklebacks, and …
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Adaption an Nestprädation bei der Mönchsgrasmücke
Nestprädation gilt als ein Hauptparameter für die Selektion von Lebenszyklusmerkmalen bei Singvögeln. Als Reaktion kann die natürliche Selektion zum einen eine Vermeidung der Prädation bewirken, z.B. durch das heimliche Verhalten der Eltern, Verteidigung der Nester, Verminderung der Auffälligkeit …