A study investigates the evolution of beneficial bacteria that live inside and on the surface of farming ants. Attine ants farm fungi, in one of the natural world's best-studied mutualistic symbioses.

Biological coevolution is a reciprocal evolutionary process in which two or more species exert selective pressures on each other, leading to genetically correlated changes in their traits over time.

Chapter 1. The fossil record of parasitism: Its extent and taphonomic constraints -- Chapter 2. Importance of data on fossil symbioses for parasite-host evolution -- Chapter 3. Biodiversity and ...

1. Brood parasitism in birds : a coevolutionary point of view / Manuel Soler -- Part I. Coevolution and diversification of interspecific brood parasites. 2. Factors affecting the rates of coevolution ...