Microbial symbioses, in which microbes have either positive (mutualistic) or negative
(parasitic) impacts on host fitness, are integral to all aspects of biology, from ecology to …

Despite extensive study, little is known about the origins of the mutualistic bacterial
endosymbionts that inhabit approximately 10% of the world's insects. In this study, we …

Highlights•Persistent endosymbionts of insects offer valuable models to study the evolution
of intimate host–bacterial interactions.•Comparative genomics has shed light on processes …

Across the tree of life, hosts have evolved mechanisms to control and mediate interactions
with symbiotic partners. We suggest that the evolution of physical structures that allow hosts …

A longstanding paradigm predicts that microbial parasites and mutualists exhibit disparate
evolutionary patterns. Parasites are predicted to promote arms races with hosts, rapid …

Range expansion results from complex eco‐evolutionary processes where range dynamics
and niche shifts interact in a novel physical space and/or environment, with scale playing a …

Symbiogenesis is the extremely rare, but permanent merger of two organisms from
phylogenetically distant lineages into one radically more complex organism. Three …

Understanding the coevolution of hosts and parasites is a long‐standing goal of
evolutionary biology. There is a well‐developed theoretical framework to describe the …

Highlights•Partner fidelity is essential for establishing and maintaining
symbioses.•Exchange of specific signals is one mechanism to ensure partner fidelity.•Signal …

Animal hosts have initiated myriad symbiotic associations with microorganisms and often
have maintained these symbioses for millions of years, spanning drastic changes in …