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@article{1376374,
author = {Toufarová, Eliška and Gvoždík, Lumír},
article_number = {April},
doi = {http://dx.doi.org/10.1016/j.jtherbio.2016.02.001},
keywords = {Amphibians; Egg size; Gravidity; Jelly coat; Mother-offspring conflict; Oviparity; Oviposition rate; Parental effect; Preferred temperature},
language = {eng},
issn = {0306-4565},
journal = {Journal of Thermal Biology},
title = {Do female newts modify thermoregulatory behavior to manipulate egg size?},
volume = {57},
year = {2016}
}
TY - JOUR
ID - 1376374
AU - Toufarová, Eliška - Gvoždík, Lumír
PY - 2016
TI - Do female newts modify thermoregulatory behavior to manipulate egg size?
JF - Journal of Thermal Biology
VL - 57
IS - April
SP - 72-77
EP - 72-77
PB - Pergamon Press
SN - 03064565
KW - Amphibians
KW - Egg size
KW - Gravidity
KW - Jelly coat
KW - Mother-offspring conflict
KW - Oviparity
KW - Oviposition rate
KW - Parental effect
KW - Preferred temperature
N2 - 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 (T-p) between reproductive (egg-laying) and non-reproductive female newts, Ich-thyosaura alpestris. Next, we exposed reproductive females to temperatures mimicking T-p 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. (C) 2016 Elsevier Ltd. All rights reserved.
ER -
TOUFAROVÁ, Eliška a Lumír GVOŽDÍK. Do female newts modify thermoregulatory behavior to manipulate egg size? \textit{Journal of Thermal Biology}. Pergamon Press, 2016, roč.~57, April, s.~72-77. ISSN~0306-4565. Dostupné z: https://dx.doi.org/10.1016/j.jtherbio.2016.02.001.
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