Sex differences in ventral side colouration of Alpine newts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F14%3A64263" target="_blank" >RIV/60460709:41210/14:64263 - isvavai.cz</a>
Result on the web
<a href="http://www.tandfonline.com/doi/pdf/10.1080/15659801.2014.937078#.VV17Hvntmko" target="_blank" >http://www.tandfonline.com/doi/pdf/10.1080/15659801.2014.937078#.VV17Hvntmko</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Sex differences in ventral side colouration of Alpine newts
Original language description
Sexual selection based on visual stimuli was recently studied in several amphibian species with permanent or temporary dichromatism. The Alpine newt (Ichthyosaura alpestris) is a Caudate species with prominent sexual dichromatism during the breeding period. We focused on the intersexual differences in the orange, carotenoid-base ventral colouration of this widespread European species. We used an image analysis approach to compare the content of the red colour and saturation of the belly in 80 male and 62 female aquatic adult newts captured during spring migration in two localities in the Czech Republic. Both studied colour parameters of the ventral side of the Alpine newt are connected with sex. Males have significantly higher values of saturation on both localities, but the relationship with red content was not so clear. Individual characteristics (body condition, body length) affect colour variables of males and females similarly. Effect of body condition on colour variables was not
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
<a href="/en/project/VG20132015133" target="_blank" >VG20132015133: Introduction of artificial insemination with the long-term frozen sperm in the reproduction of service dogs of the Police of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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