Ph.d. trial lecture and public defence: Andrea Bozman (FBA)


Ph.d.-candidate Andrea Bozman will hold a trial lecture and defend her thesis for the degree Philosophiae Doctor (PhD), at the Faculty of Biosciences and Aquaculture, Nord University.

Start date:

28 February 2019 10:15

End date:

28 February 2019 15:30

Location:

Bodø, Auditorium A5 Petter Thomassen


Klikk her for å endre bildetPh.d.-candidate Andrea Bozman
Follow the light: Jellyfish behave like fish to actively choose their location in the water - and do so without “brains.”
Title of thesis
:
The structuring effects of light on the deep-water Scyphozoan Periphylla Periphylla
Title of trial lecture:
Impacts of light and latitude on diurnally-migrating species
Evaluation committee:
- Associate Professor Andrew Sweetman, Heriot-Watt University, Edinburgh,     Scotland
- Postdoctor Ingrid Wiedmann, Department of Arctic and Marine Biology, UiT - The       Arctic University of Norway
- Professor Leslie Noble, FBA, Nord University

Supervisors:
- Professor Ketil Eiane, FBA, Nord University (main supervisor)
- Professor Dag Aksnes, Faculty of Bioscience, University of Bergen
- Researcher Sünnje Basedow, Department of Arctic and Marine Biology, UiT - The   Arctic University of Norway
- Professor Stig Falk-Petersen, Akvaplan niva, Tromsø

About the thesis:
Remotely Operated Vehicle observations revealed that the deep-water jellyfish Periphylla periphylla responds to the light levels within the water by swimming behavior that keeps these jellyfish at depths that have a range of light levels. 

Incoming levels change with season and time of day, both of which are more extreme at higher latitudes and are reflected within the water of a fjord. Field samplings in a series of fjords and modelling of the underwater light levels suggest that Periphylla’s behavior of distributing according to light and avoidance of too high light levels may explain why high numbers of this jellyfish are not found in year-round multidecadal populations within the Arctic circle as they are in some western Norwegian fjords. However, fjords with basins depths of at least 500 m deep can provide a sufficiently dark habitat for the young stages of this species to thrive.

The PhD trial lecture and defence are open to the public. The thesis is available on request. Please contact Kristine Vevik, email: kristine.vevik@nord.no

Link for live streaming: https://mediasite.nord.no/Mediasite/Catalog/Full/3f872424c8d04d7ab559592079c9aff421



Start date:

28 February 2019 10:15

End date:

28 February 2019 15:30

Location:

Bodø, Auditorium A5 Petter Thomassen