Brood parasite and host eggshells undergo similar levels of decalcification during embryonic development
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73585209" target="_blank" >RIV/61989592:15310/17:73585209 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68081766:_____/17:00464397
Výsledek na webu
<a href="http://onlinelibrary.wiley.com/doi/10.1111/jzo.12408/epdf" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jzo.12408/epdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jzo.12408" target="_blank" >10.1111/jzo.12408</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Brood parasite and host eggshells undergo similar levels of decalcification during embryonic development
Popis výsledku v původním jazyce
Common cuckoos Cuculus canorus are obligate brood parasites that lay their eggs in the nests of other (host) species. To increase the likelihood of successful parasitism, common cuckoos lay eggs with thicker and structurally stronger eggshells than those of their hosts and non-parasitic relatives. Although hatching from thicker eggshells requires greater effort and may impose physiological costs on cuckoo embryos during hatching, it is unclear whether cuckoo eggshells are indeed thicker at the time of hatching. This is because avian embryos decalcify the innermost eggshell layer (mammillary layer) for organ development during embryogenesis, reducing eggshell thickness and making hatching easier. Therefore, common cuckoo eggshells may undergo a greater degree of decalcification during embryonic development to facilitate hatching from an initially thicker shelled egg. We used scanning electron microscopy to test this hypothesis by comparing the thickness and degree of decalcification of eggshells collected either before incubation or after hatching. We found that cuckoo eggshells undergo similar degrees of decalcification during embryonic development as the thinner eggshells of a host that lays similarly sized eggs, the great reed warbler Acrocephalus arundinaceus. Cuckoo eggshells hence remain thicker than eggshells of this host throughout embryogenesis, supporting the predicted trade-off between the benefits of laying puncture-resistant eggs and the physiological costs associated with hatching from thick shelled eggs.
Název v anglickém jazyce
Brood parasite and host eggshells undergo similar levels of decalcification during embryonic development
Popis výsledku anglicky
Common cuckoos Cuculus canorus are obligate brood parasites that lay their eggs in the nests of other (host) species. To increase the likelihood of successful parasitism, common cuckoos lay eggs with thicker and structurally stronger eggshells than those of their hosts and non-parasitic relatives. Although hatching from thicker eggshells requires greater effort and may impose physiological costs on cuckoo embryos during hatching, it is unclear whether cuckoo eggshells are indeed thicker at the time of hatching. This is because avian embryos decalcify the innermost eggshell layer (mammillary layer) for organ development during embryogenesis, reducing eggshell thickness and making hatching easier. Therefore, common cuckoo eggshells may undergo a greater degree of decalcification during embryonic development to facilitate hatching from an initially thicker shelled egg. We used scanning electron microscopy to test this hypothesis by comparing the thickness and degree of decalcification of eggshells collected either before incubation or after hatching. We found that cuckoo eggshells undergo similar degrees of decalcification during embryonic development as the thinner eggshells of a host that lays similarly sized eggs, the great reed warbler Acrocephalus arundinaceus. Cuckoo eggshells hence remain thicker than eggshells of this host throughout embryogenesis, supporting the predicted trade-off between the benefits of laying puncture-resistant eggs and the physiological costs associated with hatching from thick shelled eggs.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10615 - Ornithology
Návaznosti výsledku
Projekt
<a href="/cs/project/GAP506%2F12%2F2404" target="_blank" >GAP506/12/2404: Hostitelsko-parazitická interakce jako extrémní forma konfliktu rodič-potomek</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Zoology
ISSN
0952-8369
e-ISSN
—
Svazek periodika
301
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
9
Strana od-do
165-173
Kód UT WoS článku
000395698500001
EID výsledku v databázi Scopus
—