Disputation: Annette Taugbøl

PhD candidate Annette Taugbøl at the Department of Biosciences, Faculty of Mathematics and Natural Sciences, is defending the thesis "Salinity transitions, population differentiation and phenotypic plasticity in the threespine stickleback" for the degree of PhD.

Picture of the PhD candidate smiling. She is wearing a red and blue cap a green jacket.

Photo: Private

Trial lecture: "Ecological speciation - the concept, and the examples"

Time and place: 29 Sep. 2023, 10:15 AM, Nucleus, Bikuben, Kristine Bonnevies hus

Main research findings:

This thesis sums up several approaches on how the threespine stickleback are handling salinity changes, both over long time periods, through population genetic and morphometric analysis, and over shorter time periods, by exposing fish from saltwater and freshwater to their native and opposite salinity, before measuring oxygen consumption, gene regulation and sperm movement. The results showed that there are genetic and morphometric differences between populations inhabiting different salinities, but there were few major short-time changes in oxygen consumption, gene regulation, and sperm mobility.

Illustration: Stickleback
Stickleback. Illustration: Annette Taugbøl, UiO.

Adjudication committee

Professor Kerstin Johannesson, Department of Marine Sciences, University of Gothenburg

Professor Joost Raeymaekers, Faculty of Biosciences and Aquaculture, Nord University

Professor Anne Brysting, Department of Biosciences, University of Oslo

Chair of defense

Associate Professor Bastiaan Star, Department of Biosciences, University of Oslo

Supervisors

Professor Asbjørn Vøllestad, Department of Biosciences, University of Oslo

Professor Kjetill Sigurd Jakobsen, Department of Biosciences, University of Oslo

Professor Helene Marie Lampe, Department of Biosciences, University of Oslo

Published Sep. 15, 2023 1:00 PM - Last modified Sep. 15, 2023 1:16 PM