A change in social status can quickly lead to a change in the quality of the seminal fluid produced by a male Chinook salmon as he responds to increased reproductive competition from higher-status males.
Seminal fluid harbours the as yet unknown mechanism that facilitates rapid adjustment of sperm velocity in response to changing sperm competition risk.
In this episode, we hear about self-esteem, a new genus of extinct horse, the future of biological engineering, mosquito trackers, and sperm competition in salmon.
