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rdf:type
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Description
| - Je prezentována hypotéza, že nekvalitní mimikry vajec hnízdních parazitů mohou být výsledkem nenáhodné parazitace jedinců hostitelského druhu v závislosti na věkově determinovaném patternu výběra místa zahnízdění. To by mohlo vést k vyšší parazitaci naivních hostelů, kteří akceptují parazitismus, zatímco zkušení hostitelé, kteří se umí bránit, by měli nižší riziko parazitace. To by nevyhnutelně vedlo k zpomalení koevoluce parazit-hostitel. (cs)
- I propose that the existence of imperfect adaptations (e.g. egg mimicry) in brood parasites and their hosts (e.g. discrimination abilities) could reflect age-dependent territory and nest-site selection patterns of the host. Studies of various passerines indicate that (1) older breeders tend to occupy nest-sites of higher quality than do young birds (ideal despotic distribution resulting from interference competition), (2) nest-site selection affects the risk of parasitism in various habitats, (3) egg recognition in passerines has a strong learning component (therefore naive breeders tend to accept whereas older birds tend to reject parasitic eggs). Because young naive birds, who tend to accept parasitic eggs, usually breed in low-quality areas where they are frequently parasitised, while old experienced birds, who tend to reject parasitic eggs, breed in high-quality areas where they are rarely parasitised, the distribution of acceptors and rejecters with respect to the risk of parasitism is non-random
- I propose that the existence of imperfect adaptations (e.g. egg mimicry) in brood parasites and their hosts (e.g. discrimination abilities) could reflect age-dependent territory and nest-site selection patterns of the host. Studies of various passerines indicate that (1) older breeders tend to occupy nest-sites of higher quality than do young birds (ideal despotic distribution resulting from interference competition), (2) nest-site selection affects the risk of parasitism in various habitats, (3) egg recognition in passerines has a strong learning component (therefore naive breeders tend to accept whereas older birds tend to reject parasitic eggs). Because young naive birds, who tend to accept parasitic eggs, usually breed in low-quality areas where they are frequently parasitised, while old experienced birds, who tend to reject parasitic eggs, breed in high-quality areas where they are rarely parasitised, the distribution of acceptors and rejecters with respect to the risk of parasitism is non-random (en)
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Title
| - Why is mimicry in cuckoo eggs sometimes so poor?
- Why is mimicry in cuckoo eggs sometimes so poor? (en)
- Proč mají kukaččí vejce v některých případech tak špatná mimikry? (cs)
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skos:prefLabel
| - Why is mimicry in cuckoo eggs sometimes so poor?
- Why is mimicry in cuckoo eggs sometimes so poor? (en)
- Proč mají kukaččí vejce v některých případech tak špatná mimikry? (cs)
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skos:notation
| - RIV/61989592:15310/02:00003315!RIV07-MSM-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
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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/61989592:15310/02:00003315
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - mimicry; cuckoo eggs (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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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...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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