Complex ontogeny of sexual size dimorphism in a female-larger gecko: Implications of determinate growth for lizard body size and life-history evolution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F24%3A10484181" target="_blank" >RIV/00216208:11110/24:10484181 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/24:10484181

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Wllkmeg68L" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Wllkmeg68L</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ede.12490" target="_blank" >10.1111/ede.12490</a>

Result language

angličtina

Original language name

Complex ontogeny of sexual size dimorphism in a female-larger gecko: Implications of determinate growth for lizard body size and life-history evolution

Original language description

Ectothermic vertebrates such as reptiles were assumed to be indeterminate growers, which means that there is no terminal point in time or size for growth in their lifetime. In recent years, evidence for the determinate nature of growth in lizards has accumulated, necessitating a re-examination of models of their ontogeny and evolution of sexual size dimorphism (SSD). In the female-larger gecko Paroedura vazimba, we monitored post-embryonic growth over a period of 15 months. After hatching, females grew faster than males but also reached their final body size, that is, closed growth of their vertebrae, earlier than males. The closure of bone growth in females correlates with the onset of reproductive maturation. We compared this pattern with the previously minutely studied, male-larger species Paroedura picta, where we documented determinate growth as well. We propose a model to explain the evolutionary switches in the direction of SSD in lizards based on bipotential effects of ovarian hormones on growth. In this model, male growth is assumed to require no male-specific growth modifier, such as sex-limited hormonal regulators, while growth is feminized by ovarian hormones in females. Low levels of ovarian hormones can promote bone growth, but high levels associated with maturation of the reproductive organs promote senescence of bone growth plates and thus cessation of bone growth. We suggest that models on growth, life-history and evolution of body size in many lizards should acknowledge their determinate nature of growth. Schematic depicting of the model of the ontogeny of sexual size dimorphism in female-larger and male-larger geckos with determined growth. image Ontogeny of sexual size dimorphism (SSD) is complex in a gecko Paroedura vazimba with determinate growth: females grow faster, but close vertebral growth plates earlier than males. Development of SSD in male-larger and female-larger geckos is compared.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10613 - Zoology

Project

<a href="/en/project/GA19-19746S" target="_blank" >GA19-19746S: Growth plasticity in lizards: consequences for sexual dimorphism and maternal effect in body size</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Evolution &amp; Development

ISSN

1520-541X

e-ISSN

1525-142X

Volume of the periodical

26

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

15

Pages from-to

e12490

UT code for WoS article

001288367000001

EID of the result in the Scopus database

2-s2.0-85201054275