Signalling
- Understanding diversity in oxidative status and oxidative stress: the opportunities and challenges ahead
Summary: This Commentary highlights the distinction between biochemical and biological definitions of oxidative stress, discusses issues to consider when designing experiments to investigate oxidative stress, and proposes the ‘redox signalling hypothesis’ of life history.
- Polarisation signals: a new currency for communication
Summary: Recent evidence shows animals use polarised light, as well as colour, to signal each other. This is a critical review of this new area in animal vision and ecology.