Lo Persson

Lo Persson
I have a general interest in biology and ecology and I find the academic working environment extremely stimulating and rewarding. The title of my PhD thesis is "Effects of feeding regimes on phenotype and performance in Atlantic salmon", which I defended in November 2017. I'm the mother of two sons and I like an active and outdoorsy spare time.


My research profile

My research is focused on aquatic ecology and migrating salmonids. During my PhD education I worked with hatchery-reared Atlantic salmon and studied effects of different feeding regimes on the phenotype, the smolt migration, and the adult return rates. At the moment I’m involved in work related to monitoring of sea trout in the Baltic Sea. I’m really fascinated by the life history of those two species and I would like to know more about what factors determine if they succeed and how long they stay at sea before they return to freshwater to spawn. I’m also interested in the health status of salmon and questions related to the downstream and upstream migration in regulated rivers.

I’m used to handling fish, mainly juveniles, and I have tagged a few thousand fish with PIT-tags and a few hundred with acoustic tags (surgical implantation). During my time as a PhD student I worked closely with other people at the university as well as the staff at the hatchery and various field technicians. I’m a big fan of teamwork, and when it comes to publishing I really appreciate discussing results and theories with my colleagues and I enjoy writing.

I like to pursue a carrier as a scientist and my goal is to increase the knowledge about migrating fish and contribute to the conservation of species and related ecosystem services.



I have given lectures both at the undergraduate and master level here at SLU and elsewhere. Topics that I have covered are related to fish and wildlife census techniques (including handling and tagging of fish), and to fish farming and aquaculture.

Wild Atlantic salmon smolt. Photo: Anders Alanärä.
Acoustic tagging of Atlantic salmon smolt. Photo: Lo Persson.
Field work on the river Umeälven. Photo: Anders Alanärä.
Pool fishing in Norrfors. Photo: Johan Molin.
SMOLTPRO people. Photo: Joacim Näslund (self-timer).


Co-supervisor for PhD student Linda Vikström, June 2018 - ongoing.

Co-supervisor for two Master students during thesis work 2012, 2013.

Supervisor for four Bachelor students during thesis work, 2011, 2012.

Publikationer i urval

Peer-reviewed articles

Persson, L., A. Kagervall, K. Leonardsson, M. Royan, A. Alanärä. The effect of body size and energetic state on smolt migration in Atlantic salmon. Ecology of Freshwater Fish, accepted Aug 2018.

Persson, L., Leonardsson, K., and A. Alanärä. 2018. Manipulation of the energetic state of Atlantic salmon Salmo salar juveniles and the effect on migration speed. Journal of Fish Biology, 92 (4), p. 961-978.

Cashoin, T., Glaser, S., Persson, L., Roberts, P. M., and D. Zeller. 2017. Fisheries in Somali waters: Reconstruction of domestic and foreign cathces for 1950-2015. Marine Policy, 87, p. 275-283.

Hellström, G., Klaminder, J., Finn, F., Persson, L., Alanärä, A., Jonsson, M., Fick, J. & Brodin, T. 2016. GABAergic anxiolytic drug in water increases migration behaviour in salmon. Nature Communications 7.

Persson, L. and A. Alanärä. 2014. The effect of shelter on welfare of juvenile Atlantic salmon Salmo salar reared under a feed restriction regimen. Journal of Fish Biology, 85 (3) p. 645-656.

Näslund, J., Rosengren, M., Del Villar, D., Gansel, L., Norrgård, J., Persson, L., Winkowski, J., and E. Kvingedal. 2013. Hatchery tank enrichment affects cortisol levels and shelter-seeking in Atlantic salmon (Salmo salar). Canadian Journal of Fisheries and Aquatic Sciences, 70 (4) p. 585-590.

Zeller, D., Rossing, P., Harper, S., Persson, L., Booth, S. and D. Pauly. 2011. The Baltic Sea: estimates of total fisheries removals 1950-2007. Fisheries Research, 108 (2-3) p. 356-363.

Other publications

Persson, L. 2017. Effects of feeding regimes on phenotype and performance in Atlantic salmon. Doctoral thesis no. 2017:100, Swedish University of Agricultural Sciences.

Alanärä, A., Rask, J., and L. Persson. 2017. Uppföljning av återvandrande lax. Rapport 2017:456, Energiforsk, p. 52.

Persson, L., Lindop, A., Harper, S., Zylich, K., and D. Zeller. 2016. Somalia. P. 390. In: Global Atlas of Marine Fisheries: A critical appraisal of catches and ecosystem impacts. Pauly, D. and D. Zeller (eds.), Island Press, Washington D.C.

Persson, L. 2016. Sweden (Baltic). P. 404 In: Global Atlas of Marine Fisheries: A critical appraisal of catches and ecosystem impacts. Pauly, D. and D. Zeller (eds.), Island Press, Washington D.C.

Persson, L. 2016. Sweden (West Coast). P. 405 In: Global Atlas of Marine Fisheries: A critical appraisal of catches and ecosystem impacts. Pauly, D. and D. Zeller (eds.), Island Press, Washington D.C.

Alanärä, A., Schmitz, M., and L. Persson. 2014. Funktionella metoder för odling av fysiologiskt naturanpassad smolt. Rapport 14:02, Elforsk, p. 66.

Persson, L. 2010. Sweden’s fisheries catches in the Baltic Sea (1950 - 2007). In:  Total marine fisheries extractions by country in the Baltic Sea: 1950-present. Rossing, P., Booth, S. and Zeller, D. (eds.).  Fisheries Centre Research Report  18 (1) 2010, Fisheries Centre, University of British Columbia, Vancouver, p. 225-263.

Persson, L. 2009. What is the estimated total catch of Swedish fishing in the Baltic Sea 1950-2007? Master thesis, Department of Wildlife, Fish and Environmental studies, Swedish University of Agricultural Sciences, Umeå, Sweden.