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http://doi.org/10.25358/openscience-3056Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Schaefer, Hans-Christian | |
| dc.date.accessioned | 2005-01-05T10:53:08Z | |
| dc.date.available | 2005-01-05T11:53:08Z | |
| dc.date.issued | 2005 | |
| dc.identifier.uri | https://openscience.ub.uni-mainz.de/handle/20.500.12030/3058 | - |
| dc.description.abstract | Ziel der Arbeit war die Quantifizierung einer Reihe von Lebenszyklusmerkmalen der beiden tropischen Grasmückenarten Sylvia boehmi und S. lugens (Aves: Sylviidae; frühere Gattung Parisoma). 13 Brutpaare beider Arten wurden von 2000 bis 2002 in Kenia beobachtet. Die Daten wurden mit multivariater Statistik und multistate mark-recapture Modellen ausgewertet. Die Lebenszyklusmerkmale der beiden untersuchten Sylvia Arten sind im Vergleich zu den temperaten Sylvia-Arten gekennzeichnet durch kleine Gelege von zwei Eiern, lange Inkubationsperioden (S. boehmi (b.) 15.0 Tage, S. lugens (l.) 14.5 Tage), lange Nestlingsperioden (b. 12.9 Tage, l. 16.0 Tage), und niedrige Nesterfolgsraten (b. 19.4%, l. 33.2%). Der Zeitraum vom Ausfliegen der Jungen bis zu ihrer Unabhängigkeit war mit 58.5 Tagen bei S. boehmi und 37.5 Tagen bei S. lugens vergleichsweise lang und die Überlebensrate der flüggen Jungen in dieser Zeit war relativ hoch (b. 69.2%, l. 55.4%). Die jährliche Überlebensrate der brütenden adulten Tiere betrug bei S. boehmi 71.2% und bei S. lugens 57.2%. Die Saisonalität des Habitats, bedingt durch Regen- und Trockenzeiten, hatte keinen Einfluss auf die monatliche Überlebensrate im Laufe eines Jahres. Trotz hoher Nestprädationsraten gab es keinen klaren Zusammenhang zwischen Prädation und Fütterungsrate, Nestbewachung oder Neststandort. | de_DE |
| dc.description.abstract | The aim of this thesis was to quantify a number of life history traits of the tropical warbler species Sylvia lugens and S. boehmi (Aves: Sylviidae; former genus Parisoma). Field data were collected in Kenya from 2000-2002. 13 breeding pairs of both species were studied. Multivariate statistics and multistate mark-recapture models were used to analyse the data. In comparison to their temperate congenerics the life histories of the two tropical Sylvia species is characterised by small clutches of two eggs, long incubation periods (S. boehmi (b.) 15.0 days, S. lugens (l.) 14.5 days), long nestling periods (b. 12.9 days, l. 16.0 days), and low nest success rates (b. 19.4%, l. 33.2%). The post-fledging period showed long time to independence (b. 58.5 days, l. 37.5 days) and relatively high survival rates of the young until independence (b. 69.2%, l. 55.4%). The annual survival rates of the breeding adults were 71.2% (S. boehmi) and 57.2% (S. lugens). Seasonality of rainfall in the habitat did not affect the monthly survival rate. Although nest predation rates in both species were high, there was no clear effect of parental feeding rate, nest attentiveness, and nest site on nest predation. | en_GB |
| dc.language.iso | eng | |
| dc.rights | InCopyright | de_DE |
| dc.rights.uri | https://rightsstatements.org/vocab/InC/1.0/ | |
| dc.subject.ddc | 590 Tiere (Zoologie) | de_DE |
| dc.subject.ddc | 590 Zoological sciences | en_GB |
| dc.title | The life histories of the two tropical warblers Sylvia boehmi and Sylvia lugens | en_GB |
| dc.type | Dissertation | de_DE |
| dc.identifier.urn | urn:nbn:de:hebis:77-6457 | |
| dc.identifier.doi | http://doi.org/10.25358/openscience-3056 | - |
| jgu.type.dinitype | doctoralThesis | |
| jgu.type.version | Original work | en_GB |
| jgu.type.resource | Text | |
| jgu.organisation.department | FB 10 Biologie | - |
| jgu.organisation.year | 2004 | |
| jgu.organisation.number | 7970 | - |
| jgu.organisation.name | Johannes Gutenberg-Universität Mainz | - |
| jgu.rights.accessrights | openAccess | - |
| jgu.organisation.place | Mainz | - |
| jgu.subject.ddccode | 590 | |
| opus.date.accessioned | 2005-01-05T10:53:08Z | |
| opus.date.modified | 2005-01-05T10:53:08Z | |
| opus.date.available | 2005-01-05T11:53:08 | |
| opus.organisation.string | FB 10: Biologie: FB 10: Biologie | de_DE |
| opus.identifier.opusid | 645 | |
| opus.institute.number | 1000 | |
| opus.metadataonly | false | |
| opus.type.contenttype | Dissertation | de_DE |
| opus.type.contenttype | Dissertation | en_GB |
| jgu.organisation.ror | https://ror.org/023b0x485 | |
| Appears in collections: | JGU-Publikationen | |
