000K  utf8
1100  $c2002
1500  ger
2050  urn:nbn:de:gbv:8-diss-5023
3000  Hennicke, Janos
4000  Variabilität im Jagdverhalten des Humboldtpinguins (Spheniscus humboldti) unter verschiedenen ozeanographischen Bedingungen$hChristian-Albrechts-Universität zu Kiel  [Hennicke, Janos]
4030  Kiel$nChristian-Albrechts-Universität zu Kiel
4209  This study deals with the adjustment of behaviour to environmental conditions and the extent to which these adaptations affect an animal's fitness. The adjustments by Humboldt Penguins (Spheniscus humboldti) to different oceanographic conditions and the consequences of the behaviour for reproduction were investigated. During the austral summer breeding seasons 1997/98 and 1998/99 data on foraging effort, foraging success, and reproductive success were collected at two penguin breeding colonies in Chile. Data on oceanographic conditions were compiled from several sources. The effects of the strong El Niño 1997/98 were given particular attention. The results showed that Humboldt Penguins mainly adjust the horizontal components of their foraging behaviour, particularly foraging trip duration, according to prey availability. It is hypothesised that the highly variable environment puts a selection pressure on the variability of horizontal components of the foraging behaviour, and that the Humboldt Penguin adjusts foraging trip duration according to prey availability balancing proximate with lifetime reproductive success.
4950  https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-5023$xR$3Volltext$534
4961  https://macau.uni-kiel.de/receive/diss_mods_00000502
5051  590
5550  Anpassung
5550  Beutefang
5550  diving behaviour
5550  ecophysi
5550  El Niño
5550  foraging ecology
5550  Fortpflanzungsverhalten
5550  Humboldt Penguin
5550  Humboldtpinguin
5550  Meer
5550  oceanography
5550  Spheniscus humboldti
5550  time-depth-recorder