Objective 3: Trends in use of “life history” and “ecotype”
We conducted three independent searches for the use of the terms,
“ecotypes” and “life history” for sticklebacks, PST, and lampreys
using the advanced search option in the Web of Science search engine for
articles in English, over 30 years (for years 1990 – 2019). Each search
included the words “stickleback” or “Oncoryhnchus ” or
“lamprey”, with at least one of the words “ecotype life history” in
the title of the article, using the operators: (TI=(ecotype OR life
history) AND TI=(stickleback)). The same was done for
“Oncorhynchus ” and “lamprey”. These searches were executed
between November of 2020 and February of 2021. Each article was reviewed
to determine the focal species and phenotypes assessed; whether a
genetic basis was identified for the diversity in phenotypes; and
whether an article used both terms (ecotypes and life history)
interchangeably; or both, but independently; or used only one of the
terms. Finally, the frequency of term use was calculated and compared
among papers.