Objective 1: Definitions
We found authoritative uses of the terms ecotypes and life history in the literature. In papers that make a distinction across various animal taxa, we focused on information provided for fishes, for example as by Haig et al. (2006). Our literature search included locating the first use of the term “ecotype” in the early 1900s and key publications by Stearns (1992), who is a recognized authority on life history studies in animals. In addition, we found authoritative definitions for other terms that have been used synonymously with ecotype and life history.