Alternative mechanisms of increased eggshell hardness of avian brood parasites relative to host species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33119825" target="_blank" >RIV/61989592:15310/11:33119825 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1098/rsif.2011.0207" target="_blank" >http://dx.doi.org/10.1098/rsif.2011.0207</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rsif.2011.0207" target="_blank" >10.1098/rsif.2011.0207</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Alternative mechanisms of increased eggshell hardness of avian brood parasites relative to host species

Popis výsledku v původním jazyce

Obligate brood parasitic birds lay their eggs in nests of other species and parasite eggs typically have evolved greater structural strength relative to host eggs. Increased mechanical strength of the parasite eggshell is an adaptation that can interferewith puncture ejection behaviours of discriminating hosts. We investigated whether hardness of eggshells is related to differences between physical and chemical traits from three different races of the parasitic common cuckoo Cuculus canorus, and theirrespective hosts. Using tools developed for materials science, we discovered a novel correlate of increased strength of parasite eggs: the common cuckoo's egg exhibits a greater microhardness, especially in the inner region of the shell matrix, relativeto its host and sympatric non-host species. We then tested predictions of four potential mechanisms of shell strength: (i) increased relative thickness overall, (ii) greater proportion of the structurally harder shell layers, (iii) higher

Název v anglickém jazyce

Alternative mechanisms of increased eggshell hardness of avian brood parasites relative to host species

Popis výsledku anglicky

Obligate brood parasitic birds lay their eggs in nests of other species and parasite eggs typically have evolved greater structural strength relative to host eggs. Increased mechanical strength of the parasite eggshell is an adaptation that can interferewith puncture ejection behaviours of discriminating hosts. We investigated whether hardness of eggshells is related to differences between physical and chemical traits from three different races of the parasitic common cuckoo Cuculus canorus, and theirrespective hosts. Using tools developed for materials science, we discovered a novel correlate of increased strength of parasite eggs: the common cuckoo's egg exhibits a greater microhardness, especially in the inner region of the shell matrix, relativeto its host and sympatric non-host species. We then tested predictions of four potential mechanisms of shell strength: (i) increased relative thickness overall, (ii) greater proportion of the structurally harder shell layers, (iii) higher

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of The Royal Society Interface

ISSN

1742-5689

e-ISSN

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Svazek periodika

8

Číslo periodika v rámci svazku

64

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1654-1664

Kód UT WoS článku

000295211200012

EID výsledku v databázi Scopus

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