Neither male gonadal androgens nor female reproductive costs drive development of sexual size dimorphism in lizards

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10139500" target="_blank" >RIV/00216208:11310/13:10139500 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1242/jeb.079442" target="_blank" >http://dx.doi.org/10.1242/jeb.079442</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1242/jeb.079442" target="_blank" >10.1242/jeb.079442</a>

Result language
angličtina
Original language name
Neither male gonadal androgens nor female reproductive costs drive development of sexual size dimorphism in lizards
Original language description
Sexual size dimorphism (SSD) is an extensively studied phenomenon in animals, including reptiles, but the proximate mechanism of its development is poorly understood. The most pervasive candidates are: (1) androgen-mediated control of growth, i.e. a positive effect of gonadal androgens (testosterone) on male growth in male-larger species, and a negative effect in female-larger species; and (2) sex-specific differences in energy allocation to growth, e.g. sex with larger reproductive costs should resultin smaller body size. We tested these hypotheses in adults of the male-larger lizard Paroedura picta by conducting castrations with and without testosterone implants in males and manipulating reproductive status in females. Castration or testosterone replacement had no significant effect on final body length in males. High investment to reproduction had no significant effect on final body length in intact females. Interestingly, ovariectomized females and females with testosterone implan
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EG - Zoology
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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