Variations in maternal care associated with differences in female rat reproductive behavior in a group-mating environment

2012 ◽  
Vol 55 (8) ◽  
pp. 838-848 ◽  
Author(s):  
Karen M. Prior ◽  
Michael J. Meaney ◽  
Nicole M. Cameron
Keyword(s):  
Reproductive Behavior ◽  
Maternal Care ◽  
Female Rat

scholarly journals Early life variations in temperature exposure affect the epigenetic regulation of the paraventricular nucleus in female rat pups

2020 ◽  
Vol 287 (1937) ◽  
pp. 20201991
Author(s):  
Samantha C. Lauby ◽  
Patrick O. McGowan
Keyword(s):  
Dna Methylation ◽  
Thyroid Hormone ◽  
Maternal Care ◽  
Hormone Receptor ◽  
Room Temperature ◽  
Thyroid Hormone Receptor ◽  
Female Rat ◽  
Receptor Signalling ◽  
Rat Pups ◽  
Temperature Exposure

Early life maternal care received has a profound effect on later-life behaviour in adult offspring, and previous studies have suggested epigenetic mechanisms are involved. Changes in thyroid hormone receptor signalling may be related to differences in maternal care received and DNA methylation modifications. We investigated the effects of variations in temperature exposure (a proxy of maternal contact) and licking-like tactile stimulation on these processes in week-old female rat pups. We assessed thyroid hormone receptor signalling by measuring circulating triiodothyronine and transcript abundance of thyroid hormone receptors and the thyroid hormone-responsive genes DNA methyltransferase 3a and oxytocin in the paraventricular nucleus of the hypothalamus. DNA methylation of the oxytocin promoter was assessed in relation to changes in thyroid hormone receptor binding. Repeated room temperature exposure was associated with a decrease in thyroid hormone receptor signalling measures relative to nest temperature exposure, while acute room temperature exposure was associated with an increase. Repeated room temperature exposure also increased thyroid hormone receptor binding and DNA methylation at the oxytocin promoter. These findings suggest that repeated room temperature exposure may affect DNA methylation levels as a consequence of alterations in thyroid hormone receptor signalling.

scholarly journals Reproductive behavior of the marine gastropod Charonia seguenzae (Aradas & Benoit, 1870) in captivity

2019 ◽  
Author(s):  
CHRYSA K. DOXA ◽  
ASPASIA STERIOTI ◽  
PASCAL DIVANACH ◽  
MAROUDIO KENTOURI
Keyword(s):  
Reproductive Biology ◽  
Collaborative Care ◽  
Reproductive Behavior ◽  
Maternal Care ◽  
Egg Laying ◽  
Marine Gastropod ◽  
Temperature Range ◽  
In Captivity ◽  
Evolutionary Level

The reproductive behavior of the gastropod Charonia seguenzae (Aradas & Benoit, 1870) was studied through the description of 19 copulation and 21 egg laying events of 134 wild individuals. Findings in the present study regarding a part of the reproduction temperature range (20 to 23oC) and the demonstration of maternal care provided important information on their biology, behavior and ecology. Furthermore, observed polyandry by the females and collaborative care of embryonic sacks, were two aspects of the species reproductive biology that pose new questions both at ecological and evolutionary level.

scholarly journals Adolescent Opiate Exposure in the Female Rat Induces Subtle Alterations in Maternal Care and Transgenerational Effects on Play Behavior

2011 ◽  
Vol 2 ◽  
Author(s):  
Nicole L. Johnson ◽  
Lindsay Carini ◽  
Marian E. Schenk ◽  
Michelle Stewart ◽  
Elizabeth M. Byrnes
Keyword(s):  
Maternal Care ◽  
Play Behavior ◽  
Female Rat ◽  
Transgenerational Effects

Estradiol induction of proenkephalin messenger RNA in hypothalamus: dose-response and relation to reproductive behavior in the female rat

1990 ◽  
Vol 8 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Andrea H. Lauber ◽  
Gary J. Romano ◽  
Charles V. Mobbs ◽  
Richard D. Howells ◽  
Donald W. Pfaff
Keyword(s):  
Dose Response ◽  
Reproductive Behavior ◽  
Messenger Rna ◽  
Female Rat

Progesterone-Like Effects of Estradiol on Reproductive Behavior and Hypothalamic Progestin Receptors in the Female Rat

1984 ◽  
Vol 39 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Bruce Parsons ◽  
Thomas C. Rainbow ◽  
Lenore Snyder ◽  
Bruce S. McEwen
Keyword(s):  
Reproductive Behavior ◽  
Female Rat ◽  
Progestin Receptors

Modifications in gonadotropin control and reproductive behavior in the female rat by hypothalamic and preoptic lesions

1977 ◽  
Vol 2 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Dwight M. Nance ◽  
Larry W. Christensen ◽  
James E. Shryne ◽  
Roger A. Gorski
Keyword(s):  
Reproductive Behavior ◽  
Female Rat
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