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| rdf:type
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| Description
| - Sibling competition was proposed as an important selective agent in the evolution of growth and development. Brood parasitism by the brown-headed cowbird (Molothrus ater) intensifies sibling competition in the nests of its hosts by increasing host chick mortality and exposing them to a genetically unrelated nestmate. Intranest sibling competition for resources supplied by parents is size dependent. Thus, it should select for high development rates and short nestling periods, which would alleviate negative impacts of brood parasitic chicks on host young. I tested these predictions on 134 North American passerines by comparative analyses. After controlling for covariates and phylogeny, I showed that high parasitism rate was associated with higher nestling growth rate, lower mass at fledging, and shorter nestling periods. These effects were most pronounced in species in which sibling competition is most intense (i.e., weighing over about 30 g). When species were categorized as nonhosts versus old hosts (
- Sibling competition was proposed as an important selective agent in the evolution of growth and development. Brood parasitism by the brown-headed cowbird (Molothrus ater) intensifies sibling competition in the nests of its hosts by increasing host chick mortality and exposing them to a genetically unrelated nestmate. Intranest sibling competition for resources supplied by parents is size dependent. Thus, it should select for high development rates and short nestling periods, which would alleviate negative impacts of brood parasitic chicks on host young. I tested these predictions on 134 North American passerines by comparative analyses. After controlling for covariates and phylogeny, I showed that high parasitism rate was associated with higher nestling growth rate, lower mass at fledging, and shorter nestling periods. These effects were most pronounced in species in which sibling competition is most intense (i.e., weighing over about 30 g). When species were categorized as nonhosts versus old hosts ( (en)
- Konkurence mezi mláďaty by měla ovlivňovat růstové strategie ptáků. Hnízdní parazitismus vede k větší konkurenci mezi mláďaty a tak by měl vést i k větší rychlosti růstu a k evoluční odpovědi v dalších znacích. Tuto hypotézu jsem testoval na 134 druzích severoamerických pěvců parazitovaných vlhovcem hnědohlavým. Ukázalo se, že vysoce parazitované druhy skutečně rostou rychleji, opouštějí hnízdo dříve a v menší tělesné hmotnosti, platí to však pouze u druhů vážících více než 30g. Navíc se ukázalo, že evoluci růstových strategií ovlivňuje délka koevoluce hostitele s parazitem. (cs)
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| Title
| - Growth strategies of passerine birds are related to brood parasitism by the brown-headed cowbird (Molothrus ater)
- Růstové strategie pěvců závisí na hnízdním parasitismu vlhovcem hnědohlavým (Mohothrus ater) (cs)
- Growth strategies of passerine birds are related to brood parasitism by the brown-headed cowbird (Molothrus ater) (en)
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| skos:prefLabel
| - Growth strategies of passerine birds are related to brood parasitism by the brown-headed cowbird (Molothrus ater)
- Růstové strategie pěvců závisí na hnízdním parasitismu vlhovcem hnědohlavým (Mohothrus ater) (cs)
- Growth strategies of passerine birds are related to brood parasitism by the brown-headed cowbird (Molothrus ater) (en)
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| skos:notation
| - RIV/61989592:15310/06:00002656!RIV07-GA0-15310___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GP206/05/P581), Z(MSM6198959212)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/06:00002656
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - brood parasitism; comparative analysis; development; growth; habitat change; sibling competition (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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