While it is well-established that maternal stress hormones, such as corticosterone (CORT), can induce transgenerational phenotypic plasticity, few studies have addressed the influence of maternal CORT on pre-natal life stages. We tested the hypothesis that experimentally increased CORT levels of gravid female eastern fence lizards (Sceloporus undulatus) would alter within-egg embryonic phenotype, particularly heart rates. We found that embryos from CORT-treated females had heart rates that increased faster with increasing temperature, resulting in higher heart rates at developmentally-relevant temperatures but similar heart rates at maintenance-relevant temperatures, compared to embryos of control mothers. Thus, maternal CORT appears to alter the physiology of pre-natal offspring, which may speed development and decrease the amount of time spent in eggs; the most vulnerable stage of life.
How about adding a README file? We currently accept plain text (README.txt) and markdown (README.md) files. Note: You may need to refresh to see an README file you just uploaded.
Items in this Work
|The derivative for Buddy_Egg_Heart_Rate_Data_2016.xlsx was not successfully created||4 months ago|
|User Dustin Alexander Owen has attached Buddy_Egg_Heart_Rate_Data_2016.xlsx to Maternal corticosterone increases thermal sensitivity of heart rate in lizard embryos||5 months ago|
|File could not be sent to SHARE Notify||5 months ago|
|User Dustin Alexander Owen has deposited Maternal corticosterone increases thermal sensitivity of heart rate in lizard embryos||5 months ago|