When I took Ethology at the UW back in 1974, one of the things the Sociobiologist were interested in was Game Theory. These papers considered life as a game with the rules being mortality and fecundity tables and the winners being reproductively successful. Game theory showed that the sucessful life histories were evolutionarily stable. But what really caught my attention was how in some cases, if the life history functions were laid out in a certain way, you could find that more than one life history choice could be evoluntionarily stable. It was like being slapped awake during this class. I immediately saw how this applied to our anandromous salmonids. You could fiddle with the functions until you got some indiviuals breeding early and some later in life and approximate the percentages seen in our jacking percentages. But the observations of a lowly fisheries student weren't considered very important to those in the zoology department. I've been having trouble finding references lately to any of those Game Theory papers. I think they are largely unknown to fisheries scientists, but they should be. Can you be of any help, Curt?