The limits of the energetical perspective: Life-history decisions in lizard growth

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10414535" target="_blank" >RIV/00216208:11310/20:10414535 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=rIMnwn1B4u" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=rIMnwn1B4u</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10682-020-10054-0" target="_blank" >10.1007/s10682-020-10054-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The limits of the energetical perspective: Life-history decisions in lizard growth

Popis výsledku v původním jazyce

The study of energy allocation is essential in understanding the regulation of major life history traits. It is often assumed automatically that the limitation of an energy budget or higher allocation to a single trait afect all life history traits. This assumption was inher- ently included in infuential models of ontogenetic growth. We aim to challenge this per- spective by focusing on growth in lizards. Summarizing the results of a series of long-term manipulative experiments in the Madagascar ground gecko (Paroedura picta), we show that although growth is generally assumed to be highly plastic in reptiles and other ecto- thermic vertebrates, it is at least in this species largely canalized and does not seem to be afected by energy limitations under several experimental conditions. Diet restriction, resulting in lower allocation to fat storage and reproduction, and the allocation to energeti- cally demanding traits such as reproduction in both sexes and tail regeneration had little if any efect on structural growth. We document that sexual size dimorphism does not emerge in the ontogeny of the studied species directly due to diferential allocation to structural growth in males and females. Instead, sex-specifc growth trajectories are driven by a sign- aling of ovarian hormones as the key proximate mechanism shaping sex-specifc allocation decisions during ontogeny. We suggest that the large degree of canalization of the struc- tural growth can refect hierarchy in energy allocation with the structural growth being prioritized to investment in other traits. The prioritized allocation to structural growth can refect selective advantage of reaching a fnal, optimal size for a given sex as fast as possible.

Název v anglickém jazyce

The limits of the energetical perspective: Life-history decisions in lizard growth

Popis výsledku anglicky

The study of energy allocation is essential in understanding the regulation of major life history traits. It is often assumed automatically that the limitation of an energy budget or higher allocation to a single trait afect all life history traits. This assumption was inher- ently included in infuential models of ontogenetic growth. We aim to challenge this per- spective by focusing on growth in lizards. Summarizing the results of a series of long-term manipulative experiments in the Madagascar ground gecko (Paroedura picta), we show that although growth is generally assumed to be highly plastic in reptiles and other ecto- thermic vertebrates, it is at least in this species largely canalized and does not seem to be afected by energy limitations under several experimental conditions. Diet restriction, resulting in lower allocation to fat storage and reproduction, and the allocation to energeti- cally demanding traits such as reproduction in both sexes and tail regeneration had little if any efect on structural growth. We document that sexual size dimorphism does not emerge in the ontogeny of the studied species directly due to diferential allocation to structural growth in males and females. Instead, sex-specifc growth trajectories are driven by a sign- aling of ovarian hormones as the key proximate mechanism shaping sex-specifc allocation decisions during ontogeny. We suggest that the large degree of canalization of the struc- tural growth can refect hierarchy in energy allocation with the structural growth being prioritized to investment in other traits. The prioritized allocation to structural growth can refect selective advantage of reaching a fnal, optimal size for a given sex as fast as possible.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Projekt

<a href="/cs/project/GA19-19746S" target="_blank" >GA19-19746S: Plasticita růstu ještěrů: důsledky pro pohlavní dimorfismus a maternální efekt ve velikosti těla</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Evolutionary Ecology

ISSN

0269-7653

e-ISSN

—

Svazek periodika

34

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

469-481

Kód UT WoS článku

000535399200001

EID výsledku v databázi Scopus

2-s2.0-85085501538