Are prenatal maternal resources more important in competitive than in benign postnatal environments?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33157440" target="_blank" >RIV/61989592:15310/15:33157440 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.bioone.org/doi/10.1642/AUK-14-236.1" target="_blank" >http://www.bioone.org/doi/10.1642/AUK-14-236.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1642/AUK-14-236.1" target="_blank" >10.1642/AUK-14-236.1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Are prenatal maternal resources more important in competitive than in benign postnatal environments?

Popis výsledku v původním jazyce

According to theoretical models, the optimal solution of the life-history trade-off between the number and size of offspring depends on the quality of the environment. Offspring size should be more important for their fitness in more competitive environments. This idea was rarely experimentally tested in taxa with prolonged periods of parental postnatal care, such as in birds. Here we manipulated the offspring rearing environment by enlarging or reducing brood size. Enlarged broods suffered greater mortality rates and raised smaller fledglings. Egg size had a significant positive effect on fledging mass and length of tarsus and a nonsignificant effect on wing length. These effects were similar in enlarged-sized as well as reduced-sized broods. We onlyfound a tendency for the predicted interaction between treatment and egg size in the case of nestling mass where egg size had a positive effect in enlarged broods but none in reduced broods. In contrast, in one year we found an opposite i

Název v anglickém jazyce

Are prenatal maternal resources more important in competitive than in benign postnatal environments?

Popis výsledku anglicky

According to theoretical models, the optimal solution of the life-history trade-off between the number and size of offspring depends on the quality of the environment. Offspring size should be more important for their fitness in more competitive environments. This idea was rarely experimentally tested in taxa with prolonged periods of parental postnatal care, such as in birds. Here we manipulated the offspring rearing environment by enlarging or reducing brood size. Enlarged broods suffered greater mortality rates and raised smaller fledglings. Egg size had a significant positive effect on fledging mass and length of tarsus and a nonsignificant effect on wing length. These effects were similar in enlarged-sized as well as reduced-sized broods. We onlyfound a tendency for the predicted interaction between treatment and egg size in the case of nestling mass where egg size had a positive effect in enlarged broods but none in reduced broods. In contrast, in one year we found an opposite i

Druh

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

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP506%2F12%2F2472" target="_blank" >GAP506/12/2472: Post-kopulační pohlavní výběr a biologie spermie: vnitropopulační a mezidruhové procesy u pěvců</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Auk: a quarterly journal of ornithology

ISSN

0004-8038

e-ISSN

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Svazek periodika

132

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

577-583

Kód UT WoS článku

000358289000006

EID výsledku v databázi Scopus

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