A 4 year independent research fellow position available within ASTI - with further prospects for permanent appointment.
The appointee will be expected to develop their own main line of research to complement and augment parallel research programmes within ASTI, and to align with one or more of the overarching thematic headings: Core seasonal timer mechanisms and outputs; Comparative seasonal chronobiology; One seasonal health.
The appointee will become an integral member of the Arctic Chronobiology and Physiology research group, which is based on the UiT Brevika campus and leads the ASTI programme. This is a young and growing research grouping with a strong collective ethos of interdisciplinarity and collaboration, which will offer excellent opportunities to co-develop collaborative projects under the ASTI umbrella.
Membership of this group will provide excellent further training and career development opportunities, in both research and pedagogical aspects, enabling the appointee to compete for future long-term career positions.
For further information regarding this position, please contact Professor David G. Hazlerigg, email@example.com phone +47 77 64 48 71 and look at the full description of the position here:
Do Svalbard ptarmigan need a circadian clock in a rather arrhythmic environment such as the High Arctic? During the polar day and polar night, which makes up 2/3 of their seasonal life, they are active around the clock. This suggests a lack of circadian control over behaviour. However, in a recent study from our ACP-research group we showed that the circadian clock is still an integral part of seasonal timekeeping.
While circadian based seasonal timing is widely accepted in the field of chronobiology, our study is the first to show that the same mechanism operates in permanent residents of the High Arctic.
Hence, Svalbard ptarmigan display a chronobiological adaptation perfectly suiting their habitat. They can ignore their circadian clock in terms of behaviour but are still able to utilize it in order to time seasonal events such as reproduction.
The high impact of the article clearly shows that the world craves more research on Svalbard ptarmigan. Luckily, the ACP-research group combined with the newly founded Arctic Seasonal Timekeeping Initiative (ASTI) is ready to provide.
We are happy to announce that the new Hibernation research facility is now operational at UiT. The Tromsø forskningsstiftelse (TFS ) award to Dr. Shona Wood and the UiT supported Arctic Seasonal Timekeeping Initiative (ASTI) have made it possible to establish the first hibernation research facility in Norway.
Hibernation is a physiological and behavioural adaptation that permits survival during periods of reduced food availability and extreme environmental temperatures in several mammalian species. This is achieved through cycles of metabolic depression and reduced body temperature (torpor) and rewarming (arousal).
From an human perspective, the ability of hibernating animals to arouse to a normal body temperature state after extended periods of cooling to temperatures as low as 0 degrees is nothing short of miraculous. We aim to focus on the role of the brain in this process, and the issue of how it maintains the ability to control temperature within safe limits during torpor, and then subsequently drives and co-ordinates rewarming of the organism. This undertaking addresses a basic biological mystery with great applied importance: how hibernators allow their brains to cool and become hypoxic and are then able to re-warm them returning to a healthy euthermic state, this is of clear biomedical relevance in terms of tissue/organ cryopreservation and transplantation, surgery and recovery from hypothermia.
Deep thanks and acknowledment go to PhD students Vebjørn Melum and Fredrik Markussen in making this possible. More information on the facility and project aims can be found on the ASTI website: https://uit.no/research/asti/project?pid=717950
An exciting week for the members of ASTI with two PhD thesis successfully defended.
Congratulations to Dr. Daniel Appenroth who successfully defended his PhD thesis entitled "Circadian-based processes in the high Arctic: activity, thermoregulation and photoperiodism in the Svalbard ptarmigan (Lagopus muta hyperborea)" on the 15th April 2021.
You can read Daniel's thesis and the three published papers here. Daniel was supervised by the ASTI centre director Prof. David Hazlerigg and ASTI researcher Dr. Alex West, along with Dr. Gabi Wagner. The evaluation committee consisted of Professor Brian Follett (1. opponent) and Dr. Gisela Helfer (2. opponent), with ASTI's Professor Lars Folkow as the internal member and leader of the committee.
Congratulations to Dr. Marianne Iversen who successfully defended her PhD thesis entitled "Photoperiodic history-dependent preadaptation of the smolting gill" on the 16th April.
You can read Marianne's thesis and three published papers here. Marianne was supervised by Prof. David Hazlerigg and Prof. Even Jørgensen. The evaluation committee consisted of Associate Professor Steffen Madsen, University of Southern Denmark, Denmark (1. opponent) and Professor Jon Vidar Helvik, University of Bergen (2. opponent), with Dr. Eva-Stina Edholm, an ASTI collaborator in the Norwegian College of Fishery Science as internal member and leader of the committee).
An excellent two days of science representing all the hard work relating to seasonal timing we do here at ASTI. Hopefully many more successful defences and papers to come!