scholarly journals Experimental manipulation of food availability leads to short-term intra-clutch adjustment in egg mass but not in yolk androgen or thyroid hormones

2015 ◽  
Vol 47 (1) ◽  
pp. 36-46 ◽  
Author(s):  
Suvi Ruuskanen ◽  
Veerle M. Darras ◽  
Bonnie de Vries ◽  
Marcel E. Visser ◽  
Ton G. G. Groothuis
Keyword(s):  
Thyroid Hormones ◽  
Food Availability ◽  
Experimental Manipulation ◽  
Egg Mass ◽  
Short Term

Parasites and promiscuity: Acute disease salience leads to more restricted sexual attitudes

2021 ◽  
pp. 026540752110309
Author(s):  
James B. Moran ◽  
Nicholas Kerry ◽  
Jin X. Goh ◽  
Damian R. Murray
Keyword(s):  
Social Behavior ◽  
Sexual Attitudes ◽  
Experimental Manipulation ◽  
Sexual Relationships ◽  
Experimental Results ◽  
Acute Disease ◽  
Short Term ◽  
Attitudes And Behaviors ◽  
The Relationship ◽  
Sexual Promiscuity

How does disease threat influence sexual attitudes and behaviors? Although research on the influence of disease threat on social behavior has grown considerably, the relationship between perceived disease threat and sexual attitudes remains unclear. The current preregistered study (analyzed N = 510), investigated how experimental reminders of disease threat influence attitudes and anticipated future behaviors pertaining to short-term sexual relationships, using an ecologically valid disease prime. The central preregistered prediction was that experimental manipulation of disease threat would lead to less favorable attitudes and inclinations toward sexual promiscuity. Results were consistent with this preregistered prediction, relative to both a neutral control condition and a non-disease threat condition. These experimental results were buttressed by the finding that dispositional variation in worry about disease threat predicted less favorable attitudes and inclinations toward short-term sexual relationships. This study represents the first preregistered investigation of the implications of acute disease threat for sexual attitudes.

Short-term effects of hurricane disturbance on food availability for migrant songbirds during autumn stopover

Wetlands ◽  
2009 ◽  
Vol 29 (1) ◽  
pp. 123-134 ◽  
Author(s):  
Robert C. Dobbs ◽  
Wylie C. Barrow ◽  
Clinton W. Jeske ◽  
Jennifer DiMiceli ◽  
Thomas C. Michot ◽  
...  
Keyword(s):  
Food Availability ◽  
Short Term ◽  
Hurricane Disturbance ◽  
Short Term Effects

Thermogenic effect of thyroid hormones: interactions with epinephrine and insulin.

1990 ◽  
Vol 259 (3) ◽  
pp. E305
Author(s):  
V Piolino ◽  
K J Acheson ◽  
M J Müller ◽  
N Jeanprêtre ◽  
A G Burger ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Thyroid Hormones ◽  
Basal Insulin ◽  
Plasma Insulin ◽  
Resting Energy Expenditure ◽  
Fat Free Mass ◽  
Short Term ◽  
Epinephrine Infusion ◽  
Before And After ◽  
Basal Plasma

The interactions between thyroid hormones, epinephrine, and insulin in the regulation of energy expenditure were investigated in a group of healthy young men before and after thyroxine (T4) treatment (300 micrograms/day for 14 days) at basal plasma insulin concentrations and during hypoinsulinemia with and without epinephrine infusion (0.05 micrograms.kg fat-free mass-1.min-1). T4 treatment induced moderate hyperthyroidism and increased resting energy expenditure (RMR). The effect was more pronounced during short-term hypoinsulinemia, but hypoinsulinemia by itself did not influence RMR. Epinephrine infusion caused a significant increase in energy expenditure. The effect was most pronounced at hypoinsulinemia and with T4 treatment. Hypoinsulinemia and T4 treatment were not additive in their effects. We conclude that basal insulin concentrations mask some of the thermogenic effects of thyroid hormones and epinephrine. Thus insulin antagonism may suppress some of the thermogenic actions of thyroid hormones and epinephrine.

scholarly journals The stress hormone corticosterone in a marine top predator reflects short‐term changes in food availability

2015 ◽  
Vol 5 (6) ◽  
pp. 1306-1317 ◽  
Author(s):  
Robert T. Barrett ◽  
Kjell E. Erikstad ◽  
Hanno Sandvik ◽  
Mari Myksvoll ◽  
Susi Jenni‐Eiermann ◽  
...  
Keyword(s):  
Food Availability ◽  
Stress Hormone ◽  
Top Predator ◽  
Short Term

scholarly journals Effects of thyroid hormones on pulmonary and renal angiotensin-converting enzyme concentrations in fetal sheep near term

2002 ◽  
Vol 173 (1) ◽  
pp. 143-150 ◽  
Author(s):  
AJ Forhead ◽  
AL Fowden
Keyword(s):  
Angiotensin Converting Enzyme ◽  
Thyroid Hormones ◽  
Plasma Cortisol ◽  
Experimental Manipulation ◽  
Late Gestation ◽  
Converting Enzyme ◽  
Fetal Sheep ◽  
Near Term ◽  
Sheep Fetus

In the sheep fetus, pulmonary and renal concentrations of angiotensin-converting enzyme (ACE) increase towards term in parallel with the prepartum surges in plasma cortisol and tri-iodothyronine (T(3)). The ontogenic change in pulmonary ACE has been shown to be induced, at least in part, by cortisol but the role of the thyroid hormones is unknown. Therefore, this study investigated the effects of thyroid hormones on tissue ACE concentration in fetal sheep during late gestation. Pulmonary and renal ACE concentrations were measured in sheep fetuses after experimental manipulation of thyroid hormone status by fetal thyroidectomy and exogenous hormone infusion. In intact fetuses, pulmonary and renal ACE concentrations increased between 127-132 and 142-145 days of gestation (term 145 +/- 2 days), coincident with the prepartum rises in plasma cortisol and T(3). The ontogenic increment in pulmonary ACE concentration was abolished when the prepartum surge in T(3), but not cortisol, was prevented by fetal thyroidectomy. At 143-145 days, ACE concentration in the lungs and kidneys of the thyroidectomised fetuses were both lower than those in the intact fetuses. In intact fetuses at 127-132 days, pulmonary ACE was upregulated by intravenous infusions of either cortisol (2-3 mg/kg per day) or T(3) (8-12 microg/kg per day) for 5 days. Renal ACE was unaffected by cortisol or T(3) infusion. Therefore, thyroid hormones have an important role in the developmental control of pulmonary and renal ACE concentration in the sheep fetus towards term. In addition, the prepartum rise in plasma T(3) appears to mediate, in part, the maturational effect of cortisol on pulmonary ACE concentration.

Thyroid hormones homeostasis in rats refed after short-term and prolonged fasting

1996 ◽  
Vol 19 (5) ◽  
pp. 304-311 ◽  
Author(s):  
Z. Kmiec ◽  
G. Kotlarz ◽  
B. Smiechowska ◽  
A. Mysliwski
Keyword(s):  
Thyroid Hormones ◽  
Prolonged Fasting ◽  
Short Term

Short Term Under- and Over-Feeding Has No Effect on Serum Leptin or Thyroid Hormones

2011 ◽  
Vol 43 (Suppl 1) ◽  
pp. 668-669
Author(s):  
David W. DeGroot ◽  
Matthew R. Ely ◽  
J Philip Karl ◽  
Andrew J. Young
Keyword(s):  
Thyroid Hormones ◽  
Short Term ◽  
Serum Leptin
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