"brood parasitism; cuckoo; egg appearance; evolution of mimicry; reflectance"@en . "Studovali jsme efekt r\u016Fzn\u00FDch barev m\u011B\u0159en\u00FDch spektrofotometricky (UV\u2013viditeln\u00E1 \u010D\u00E1st spektra) na odm\u00EDt\u00E1n\u00ED ciz\u00EDch vajec drozdy zp\u011Bvn\u00FDmi. Provedli jsme s\u00E9rii experiment\u016F s modr\u00FDmi modely, reprezentuj\u00EDc\u00EDmi mimetick\u00E1 vejce, a modely nabarven\u00FDmi \u0161esti jin\u00FDmi barvami, reprezentuj\u00EDc\u00EDmi nemimetick\u00E1 vejce. Na\u0161e v\u00FDsledky uk\u00E1zaly, \u017Ee dv\u011B z modr\u00FDch barev, p\u016Fvodn\u011B ozna\u010Den\u00FDch jako mimetick\u00E9, byly odm\u00EDt\u00E1ny s vysokou frekvenc\u00ED, zat\u00EDmco jeden z nemimetick\u00FDch model\u016F byl akceptov\u00E1n. Mnohon\u00E1sobn\u00E1 regrese absolutn\u00EDch rozd\u00EDl\u016F ve zbarven\u00ED mezi hostitelsk\u00FDmi a vlo\u017Een\u00FDmi vejci na frekvenci odm\u00EDt\u00E1n\u00ED uk\u00E1zala, \u017Ee \u00FArove\u0148 mimikry v UV a zelen\u00E9 \u010D\u00E1sti spektra v\u00FDznamn\u011B ovliv\u0148ovala odm\u00EDt\u00E1n\u00ED vajec. Podle na\u0161ich znalost\u00ED je toto prvn\u00ED detailn\u00ED studie, kter\u00E1 prok\u00E1zala, \u017Ee odli\u0161n\u00E9 vn\u00EDm\u00E1n\u00ED barev pt\u00E1ky m\u016F\u017Ee ovliv\u0148ovat jejich reakce na ciz\u00ED vejce. Na\u0161e v\u00FDsledky nazna\u010Duj\u00ED, \u017Ee kombinace UV a viditeln\u00E9 \u010D\u00E1sti spektra hraje hlavn\u00ED roli v evoluci diskrimina\u010Dn\u00EDch proces\u016F u pt\u00E1k\u016F."@cs . "3"^^ . . "RIV/68081766:_____/07:00085793" . "Proch\u00E1zka, Petr" . "3"^^ . "Biological Journal of the Linnean Society" . . "UV a zelen\u00E9 \u010D\u00E1sti spektra ovliv\u0148uj\u00ED rozpozn\u00E1v\u00E1n\u00ED vajec u drozda zp\u011Bvn\u00E9ho (Turdus philomelos)"@cs . "We investigated effect of different colors of the experimental eggs measured by UV\u2013visible reflectance spectrophotometry on rejection behavior in the song thrush. We carried out a set of experiments with four blue model eggs representing mimetic eggs, whereas six other colours represented nonmimetic eggs. Our results revealed that two colors originally designed as a mimetic were rejected at a high rate, whereas one group of the nonmimetic was accepted. A multiple regression model of absolute differences between song thrush and experimental eggs on rejection rate showed that the level of mimicry in the UV and green parts of the color spectrum significantly influenced egg rejection. To our knowledge, this is the first detailed study showing that different color perception by the birds can affect their responses towards the parasitic egg. These findings suggest that the combination of UV and visible ranges of the spectra plays a major role in the evolution of discrimination processes." . . . . . . "269;276" . "2" . . "Pola\u010Dikov\u00E1, Lenka" . "UV a zelen\u00E9 \u010D\u00E1sti spektra ovliv\u0148uj\u00ED rozpozn\u00E1v\u00E1n\u00ED vajec u drozda zp\u011Bvn\u00E9ho (Turdus philomelos)"@cs . "0024-4066" . "RIV/68081766:_____/07:00085793!RIV08-AV0-68081766" . . . "[3191CED539E8]" . . "8"^^ . . "P(IAA600930605), P(LC06073), Z(AV0Z60930519)" . "Ultraviolet and green parts of the colour spectrum affect egg rejection in the song thrush (Turdus philomelos)" . . . . . "Ultraviolet and green parts of the colour spectrum affect egg rejection in the song thrush (Turdus philomelos)" . . . "Ultraviolet and green parts of the colour spectrum affect egg rejection in the song thrush (Turdus philomelos)"@en . . "92" . "456500" . "Ultraviolet and green parts of the colour spectrum affect egg rejection in the song thrush (Turdus philomelos)"@en . . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "Honza, Marcel" . "We investigated effect of different colors of the experimental eggs measured by UV\u2013visible reflectance spectrophotometry on rejection behavior in the song thrush. We carried out a set of experiments with four blue model eggs representing mimetic eggs, whereas six other colours represented nonmimetic eggs. Our results revealed that two colors originally designed as a mimetic were rejected at a high rate, whereas one group of the nonmimetic was accepted. A multiple regression model of absolute differences between song thrush and experimental eggs on rejection rate showed that the level of mimicry in the UV and green parts of the color spectrum significantly influenced egg rejection. To our knowledge, this is the first detailed study showing that different color perception by the birds can affect their responses towards the parasitic egg. These findings suggest that the combination of UV and visible ranges of the spectra plays a major role in the evolution of discrimination processes."@en . .