Highly plastic resource allocation to growth and reproduction in females of an African annual fish

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00114952" target="_blank" >RIV/00216224:14310/15:00114952 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081766:_____/15:00448075 RIV/00216224:14310/14:00107059

Výsledek na webu

<a href="https://doi.org/10.1111/eff.12175" target="_blank" >https://doi.org/10.1111/eff.12175</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/eff.12175" target="_blank" >10.1111/eff.12175</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly plastic resource allocation to growth and reproduction in females of an African annual fish

Popis výsledku v původním jazyce

Phenotypic plasticity is an important mechanism to maximise fitness in unpredictable environments by fine-tuning phenotypes to a specific environmental setting. We used Nothobranchius furzeri, an African annual fish from temporary pools with erratic changes in habitat condition, to study changes in the allocation to growth and reproduction and to test the key trade-off between egg size and number. In an experimental setting, we quantitatively varied ration at two levels and over two time periods, including temporal switches in ration level. As predicted, female N.furzeri possessed the capacity for compensatory growth, which surprisingly came with no longer-term cost to fecundity. Females responded strongly to ration manipulation, with a pronounced decrease in fecundity associated with a low ration, even after accounting for body mass. Due to the unpredictability of offspring environment, we expected no adaptive change in oocyte size. However, females responded to the quality of their environment in accordance with an adaptive maternal effect, with females receiving a low ration producing larger eggs. Further, a switch in ration size in either direction was associated with a decrease in egg size. There was a trade-off between egg size and number in half of the treatments, but high variability in egg size among females made the relationship complex. Overall, N.furzeri females demonstrated high plasticity in both growth rate and fecundity parameters. Females appear able to track and respond adaptively to unpredictable changes in food availability in their environment.

Název v anglickém jazyce

Highly plastic resource allocation to growth and reproduction in females of an African annual fish

Popis výsledku anglicky

Phenotypic plasticity is an important mechanism to maximise fitness in unpredictable environments by fine-tuning phenotypes to a specific environmental setting. We used Nothobranchius furzeri, an African annual fish from temporary pools with erratic changes in habitat condition, to study changes in the allocation to growth and reproduction and to test the key trade-off between egg size and number. In an experimental setting, we quantitatively varied ration at two levels and over two time periods, including temporal switches in ration level. As predicted, female N.furzeri possessed the capacity for compensatory growth, which surprisingly came with no longer-term cost to fecundity. Females responded strongly to ration manipulation, with a pronounced decrease in fecundity associated with a low ration, even after accounting for body mass. Due to the unpredictability of offspring environment, we expected no adaptive change in oocyte size. However, females responded to the quality of their environment in accordance with an adaptive maternal effect, with females receiving a low ration producing larger eggs. Further, a switch in ration size in either direction was associated with a decrease in egg size. There was a trade-off between egg size and number in half of the treatments, but high variability in egg size among females made the relationship complex. Overall, N.furzeri females demonstrated high plasticity in both growth rate and fecundity parameters. Females appear able to track and respond adaptively to unpredictable changes in food availability in their environment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

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

Ecology of Freshwater Fish

ISSN

0906-6691

e-ISSN

1600-0633

Svazek periodika

24

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

616-628

Kód UT WoS článku

000361010500013

EID výsledku v databázi Scopus

2-s2.0-85027936676