Everyone knows not to get between a mother and her offspring. What makes these females unafraid when it comes to protecting their young may be low levels of a peptide, or small piece of protein, released in the brain that normally activates fear and anxiety, according to new research published in the August issue of Behavioral Neuroscience.
A female mouse gathers, grooms and nurses her 3-day-old pups in the research lab of assistant professor of zoology Stephen Gammie. Gammie has studied the link between maternal aggression in mice and levels of a peptide hormone that controls behavior, particularly an animals response to fear and anxiety. Photo by: Michael Forster Rothbart
View from below as a female mouse gathers her 8-day-old pups in the research lab of assistant professor of zoology Stephen Gammie. Gammie has studied the link between maternal aggression in mice and levels of a peptide hormone that controls behavior, particularly an animals response to fear and anxiety.Photo by: Michael Forster Rothbart
"We see this fierce protection of offspring is so many animals," says Stephen Gammie, a University of Wisconsin-Madison assistant professor of zoology and lead author of the recent paper. "There are stories of cats rescuing their kittens from burning buildings and birds swooping down at people when their chicks are on the ground."
In terms of biology, it makes sense that mothers would lay down their own lives to protect their offspring, especially if it means the parents genes will be passed down to the next generation, says Gammie.
Enduring cold temperatures alters fat cell epigenetics
19.04.2018 | University of Tokyo
Full of hot air and proud of it
18.04.2018 | University of Pittsburgh
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.
Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
19.04.2018 | Materials Sciences
19.04.2018 | Physics and Astronomy
19.04.2018 | Physics and Astronomy