What makes the oldfield mouse steadfastly monogamous throughout its life while its closest rodent relatives are promiscuous? The answer may be a previously unknown hormone-generating cell, according to a new study published ...
Plants & Animals
3 hours ago
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1
Like humans, older dogs can be prone to a variety of health issues.
Veterinary medicine
Jul 5, 2023
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1
Sitting atop each kidney and measuring only around two centimeters long, the adrenal glands are tiny but mighty. These glands produce steroid hormones, including those involved in stress response, blood pressure maintenance, ...
Evolution
May 20, 2022
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154
Parenting is not the only way moms and dads impact the behavior of their offspring. Genes matter, too. And although most of our genes are inherited in pairs—one copy from each parent—moms and dads exert their genetic ...
Molecular & Computational biology
Mar 8, 2022
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41
Early in human development, during the first trimester of gestation, a fetus may have XX or XY chromosomes that indicate its sex. Yet at this stage a mass of cells known as the bipotential gonad that ultimately develops into ...
Evolution
May 5, 2021
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31
Abnormal levels of stress hormones such as adrenaline and cortisol are linked to a variety of mental health disorders, including depression and posttraumatic stress disorder (PTSD). MIT researchers have now devised a way ...
Bio & Medicine
Apr 13, 2020
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1229
When faced with a predator or sudden danger, the heart rate goes up, breathing becomes more rapid, and fuel in the form of glucose is pumped throughout the body to prepare an animal to fight or flee.
Cell & Microbiology
Sep 12, 2019
1
82006
Avian neuroscientists at the University of Arkansas System Division of Agriculture probing the neural pathways for stress response have identitifed a new structure of neurons in the poultry brain.
Plants & Animals
Oct 23, 2018
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5
Indiana University researchers have discovered a hormonal mechanism in hamsters that connects short winter days with increased aggression in females, and that it differs from the mechanism that controls this same response ...
Plants & Animals
Nov 18, 2015
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1069
As part of an unusual mortality event investigation, a team of scientists has discovered that dead bottlenose dolphins stranded in the northern Gulf of Mexico since the start of the Deepwater Horizon oil spill have lung and ...
Ecology
May 20, 2015
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