Do female newts modify thermoregulatory behavior to manipulate egg size?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00457902" target="_blank" >RIV/68081766:_____/16:00457902 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/16:00093984
Result on the web
<a href="http://dx.doi.org/10.1016/j.jtherbio.2016.02.001" target="_blank" >http://dx.doi.org/10.1016/j.jtherbio.2016.02.001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jtherbio.2016.02.001" target="_blank" >10.1016/j.jtherbio.2016.02.001</a>

Result language
angličtina
Original language name
Do female newts modify thermoregulatory behavior to manipulate egg size?
Original language description
Reproductive females manipulate offspring phenotypes by modifying conditions during embryogenesis. In ectotherms, the environmental control over embryogenesis is often realized by changes in maternal thermoregulation during gravidity. To determine if reproduction influences thermoregulatory behavior in species where females lay eggs shortly after fertilization (strict oviparity), we compared preferred body temperatures (Tp) between reproductive (egg-laying) and non-reproductive female newts, Ichthyosaura alpestris. Next, we exposed reproductive females to temperatures mimicking Tp ranges of reproductive and non-reproductive individuals to find out whether the maternally modified thermal regime influences ovum and jelly coat volume, and early cleavage rates at the time of oviposition. In the thermal gradient, reproductive females maintained their body temperatures within a narrower range than non-reproductive individuals. The exposure of ovipositing females to temperatures preferred during their reproductive and non-reproductive period had a negligible influence on egg size and early cleavage rates. We conclude that the modification of maternal thermoregulatory behavior provides a limited opportunity to manipulate egg traits in newts.
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
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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