Spatial variation in disease risk in wild populations can depend both on environmental and genetic factors. Understanding the various contributions of each factor requires experimental manipulation of ...

Microscopic organisms such as bacteria and fungi live together in neighborhoods known as microbial consortia. Some of these neighborhoods naturally exist in soils, food, water, and even the human gut ...

Map of studied elephant populations in Tanzania (IMAGE) Penn State Caption Researchers from Penn State studied the genetics of elephant populations in four regions in Tanzania, revealing how ...

Throughout human history, there have been many instances where two populations came into contact—especially in the past few thousand years because of large-scale migrations as a consequence of ...

A team has developed a technique to study how different fish species interact with each other in a coastal region, a breakthrough that helps explain the complex relationships among marine species and ...

The probability of drug interactions increases when genetic polymorphisms are considered, indicating that pharmacogenetic assessment may be useful in predicting the presence and severity of ...

Population cycles: causes and analysis / Alan A. Berryman -- The role of insect parasitoids in population cycles of the spruce needleminer in Denmark / Mikael Münster-Swendsen -- Population cycles of ...