- News Home
24 April 2014 11:45 am ,
Vol. 344 ,
Major climate data sets have underestimated the rate of global warming in the last 15 years owing largely to poor data...
The tsetse fly is best known as the vector for the trypanosome parasites that cause sleeping sickness and a disease in...
The National Institutes of Health is revising its "two strikes" rule, which allowed researchers only one chance to...
By stabilizing the components of retromers, molecular complexes that act like recycling bins in cells, a recently...
Fossil fuels power modern society by generating heat, but much of that heat is wasted. Semiconductor devices called...
Researchers are gaining insights into what made Supertyphoon Haiyan so powerful and devastating through post-storm...
Millions around the world got a first-hand look at what it was like to be in Tacloban while it was pummeled by...
- 24 April 2014 11:45 am , Vol. 344 , #6182
- About Us
ScienceShot: Warmer Eggs, Better Ducks
23 August 2011 7:02 pm
All that time ducks spend sitting on their nests pays off, and not just by protecting their eggs from hungry foxes. The warmer a duck egg stays, the stronger the immune system of the duckling that hatches, according to a new study. Researchers incubated the eggs of wood ducks (Aix sponsa) at 35˚, 35.9˚, and 37˚C, temperatures within the normal range for eggs in the wild. When the eggs hatched, the scientists challenged the immune system of each duckling by injecting it with foreign cells. The birds that had been incubated at the lowest temperature had the least swelling at the injection site and the fewest antibodies in their blood. That indicates that their bodies were not as robustly attacking the foreign cells, the team reports today in Biology Letters. In the wild, ducklings are exposed to pathogens and parasites as soon as they hatch, and small differences in immune function could determine whether the hatchling survives or not.
See more ScienceShots.