Dynamics of morphophysiological charateristics in female water voles (Arvicola amphibius L.) during pregnancy

Yuzhik, E. I.; Proskurnyak, L. P.; Назарова, Г. Г.

doi:10.1134/s0022093013040075

Cited by 1 publication

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Females with more developed lungs were shown to be more successful in carring offspring as they have lower embryonic losses. The lung index does not depend of the pregnancy term, while the liver index significantly increases before labor [9]. Hepatomegaly is a physiological adaptation for pregnancy typical to rodents [12].…”

Section: Discussionmentioning

confidence: 99%

“…To find out the relationship between reproductive and morphophysiological indices of pregnant females, the general regression model was used, since the dynamics of many of these indices during the course of pregnancy was nonlinear [9,10]. As a factor variable, the pregnancy trimester number was used (1st trimester-days 4-7, 2nd trimester-days 8-14, 3rd trimesterdays [15][16][17][18][19][20], while certain morphophysiological indices served as independent continuous characters.…”

Section: Methodsmentioning

confidence: 99%

“…Liver mass increases proportional to the term of pregnancy, and before labor it is by 40% higher than in unmated females. In contrast to nonpregnant females, the pregnant ones exhibit a lowered level of free thyroxin and an elevated level of testosterone [9].…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Correlations of reproductive indices of water vole females (Arvicola amphibius) with morphometric and hormonal characteristics

Yuzhik

Proskurnyak

Назарова

2015

J Evol Biochem Phys

Self Cite

View full text Add to dashboard Cite

Fluctuations in water vole population size depend on abiotic and intra-population factors affecting the physiological condition of females. The relationship between reproductive success variability and morpho-physiological indices of females during pregnancy is studied quite poorly. In standard vivarium conditions, the morphometric and hormonal indices of females were assessed at different terms of pregnancy (first trimester-days 4-7, second trimester-days 8-14, third semester-days 15-20), and their relationship with potential and realized fertility and embryonic death rate was examined. The general regression model was used for the data analysis. Positive correlations were found between the potential fertility and the female body mass at mating, condition index, white adipose tissue index, and blood testosterone level. The reproductive indices under study were independent of the blood thyroxin level. A positive correlation was established between the level of embryonic loss and the liver and lung indices. Liver and spleen are essential for the maintenance of the female body mass homeostasis during the reproductive period.

show abstract

Section: Discussionmentioning

confidence: 99%