Hidden complexity in the ontogeny of sexual size dimorphism in male-larger beetles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10385272" target="_blank" >RIV/00216208:11310/18:10385272 - isvavai.cz</a>
Alternative codes found
RIV/00027006:_____/18:00004491
Result on the web
<a href="https://doi.org/10.1038/s41598-018-24047-1" target="_blank" >https://doi.org/10.1038/s41598-018-24047-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-018-24047-1" target="_blank" >10.1038/s41598-018-24047-1</a>

Result language
angličtina
Original language name
Hidden complexity in the ontogeny of sexual size dimorphism in male-larger beetles
Original language description
Sexual size dimorphism (SSD) is widespread among animals, but its developmental mechanisms are not fully undestood. We investigated the proximate causes of SSD in three male-larger and one monomorphic scarab beetles using detailed monitoring of growth in individual instars. Apart from the finding that SSD in all three male-larger species started to develop already in the first larval instar, we generally found a high variability in SSD formation among the species as well as among instars. Overall, sexual differences in developmental time, average growth rate, as well as in the shape of the growth trajectory seem to be the mechanisms responsible for SSD ontogeny in scarab beetles. In the third instar, when the larvae attain most of their mass, the males had a similar or even lower instantaneous growth rate than females and SSD largely developed as a consequence of a longer period of rapid growth in males even in cases when the sexes did not differ in the total duration of this instar. Our results demonstrate that a detailed approach, examining not only the average growth rate and developmental time, but also the shape of the growth trajectory, is necessary to elucidate the complex development of SSD.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - 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/GA16-24619S" target="_blank" >GA16-24619S: Hormonal control of sexual dimorphism in squamate reptiles</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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