Jörgen Johnsson

Professor, ekologisk zoologi

Stf prefekt

Tel: 031-786 36 65 | Jorgen.Johnsson@zool.gu.se

Forskningsintressen

My research area is aquatic ecology with an interdisciplinary approach including interactions between behaviour, ecology and physiology, using fish as a model organism.

I am interested in the evolutionary mechanisms shaping behaviour, growth and survival.

Applied aspects of this work include genetic and environmental effects of domestication on the behaviour and physiology of fish and consequences for interactions between hatchery and wild populations, as well as ecological risk assessment of transgenic fish.

Pågående projekt

“Coping with divided attention: effects of the social and physical environment on the performance of fishes"
Research Partners: Sian Griffiths, Cardiff University; Svante Winberg, Uppsala University. Granted by Formas, Jan 2005-Dec 2007.
 
"Competition and compensatory growth in fish: ecological mechanisms and implications for biological risk assessment"
Research Partners: Torgny Bohlin & Johan Höjesjö, GU; Robert H. Devlin & Fredrik Sundström, West Vancouver Laboratories, Fisheries and Oceans, Canada. Granted by Formas, Jan 2006- Dec 2008.

 “Production of wild-like stocking fish"
Research Partners: Torgny Bohlin, GU; Sofia Brockmark, PhD student, GU; Erik Petersson and Jonas Dahl, National Board of Fisheries, Sweden; Svante Winberg, Uppsala University. Granted by Elforsk and EU, Feb 2003 – Jan 2006.

"Quantifying biological risks of growth-enhanced transgenic salmon"
Research Partners:  Björn Th. Björnsson, GU; Lena Neregård, PhD student, GU; Kjetil Hindar and Sigurd Einum, Norwegian Institute for Natural Research (NINA) Trondheim; Ian Fleming, Memorial University, Newfoundland, Canada; Robert H. Devlin, West Vancouver Laboratories, Fisheries and Oceans, Canada.
Granted by The research Council of Norway, Mar 2003 – Feb 2007.

Publikationer

2009

  • Bart Adriaenssens; Jörgen Johnsson (2009).
    Personality and life-history productivity: consistent or variable association? 0169-5347, GUP 93498

  • Jörgen Johnsson (2009).
    Behavioural defenses in fish , GUP 101311

  • Line Sundt-Hansen; Lena Neregård; Sigurd Einum; Johan Höjesjö; Björn Thrandur Björnsson; Kjetil Hindar; Finn Økland; Jörgen Johnsson (2009).
    Growth enhanced brown trout show increased movement activity in the wild , GUP 97373

2008

  • E Brännäs; Jörgen Johnsson (2008).
    Behaviour and welfare in farmed fish , GUP 86318

  • Lena Gustavsson; Jörgen Johnsson; Tobias Uller (2008).
    Mixed support for sexual selection theories of mate preferences in the Swedish population 1474-7049, GUP 85371

  • Jörgen Johnsson; Karin Kjällman-Eriksson (2008).
    Cryptic prey colouration increases search time in brown trout ( Salmo trutta ): effects of learning and body size 0340-5443, GUP 74799

  • Lena Neregård; L Sundt-Hansen; K Hindar; S Einum; Jörgen Johnsson; R. H. Devlin; I A Fleming; Björn Thrandur Björnsson (2008).
    Wild Atlantic salmon Salmo salar L. strains have greater growth potential than a domesticated strain selected for fast growth 1095-8649, GUP 74802

  • Lena Neregård; L Sundt-Hansen; Björn Thrandur Björnsson; Jörgen Johnsson (2008).
    Growth hormone affects behaviour of wild brown trout Salmo trutta in territorial owner–intruder conflicts 1095-8649, GUP 85366

  • L. Fredrik Sundström; Jörgen Johnsson (2008).
    Miljökonsekvenser av GMO hos fisk , GUP 101322

2007

  • Sofia Brockmark; Lena Neregård; Torgny Bohlin; Björn Thrandur Björnsson; Jörgen Johnsson (2007).
    Effects of rearing density and tank enrichment on the pre- and post-release performance of Atlantic salmon (Salmo salar) 0002-8487, GUP 63544

  • R. H. Devlin; L. Fredrik Sundström; Jörgen Johnsson; I A Fleming; K. Hayes; W. Ojwang; C. Bambaradeniya; M. Zakaraia-Ismail (2007).
    Assessing Phenotypic and Ecological Effects of Transgenic Fish Prior to Entry into Nature. , GUP 101313

  • Johan Höjesjö; F. Økland; L. Fredrik Sundström; J. Pettersson; Jörgen Johnsson (2007).
    Movement and home range in relation to dominance; a telemetry study on brown trout Salmo trutta 0022-1112, GUP 40803

  • Johan Höjesjö; P. Andersson; A Engman; Jörgen Johnsson (2007).
    Rapid bystander assessment of intrinsic fighting ability: behavioural and heart rate responses in rainbow trout 0003-3472, GUP 68183

  • Jörgen Johnsson; L. Fredrik Sundström (2007).
    Social transfer of predation risk information reduces food location ability in European minnows (Phoxinus phoxinus). 0179-1613, GUP 63339

  • L. Fredrik Sundström; Mare Lõhmus; Jörgen Johnsson; R. H. Devlin (2007).
    Dispersal potential is affected by growth-hormone transgenesis in coho salmon (Oncorhynchus kisutch). 0179-1613, GUP 63336

2006

  • Jörgen Johnsson; Torgny Bohlin (2006).
    The cost of catching up: increased winter mortality following structural growth compensation in the wild 0962-8452, GUP 40809

  • Jörgen Johnsson; S. Winberg; K. A. Sloman (2006).
    Social interactions , GUP 101317

2005

  • Jörgen Johnsson; Torgny Bohlin (2005).
    Compensatory growth for free? A field experiment on brown trout, Salmo trutta 0030-1299, GUP 41062

  • L. Fredrik Sundström; E. Petersson; Jörgen Johnsson; J. Dannewitz; Johan Höjesjö; T. Järvi (2005).
    Heart rate responses to predation risk in Salmo trutta are affected by the rearing environment 1095-8649, GUP 85358

2004

  • Torgny Bohlin; Jörgen Johnsson (2004).
    A model on foraging activity and group size: can the relative importance of predation risk dilution and competition be evaluated experimentally? , GUP 41138

  • S. W. Griffiths; Sofia Brockmark; Johan Höjesjö; Jörgen Johnsson (2004).
    Coping with divided attention: the advantage of familiarity 0962-8452, GUP 41147

  • Johan Höjesjö; Jörgen Johnsson; Torgny Bohlin (2004).
    Habitat complexity reduces the growth of aggressive and dominant brown trout (Salmo trutta) relative to subordinates 0340-5443, GUP 41145

  • Jörgen Johnsson; A. Rydeborg; L. Fredrik Sundström (2004).
    Predation risk and the territory value of cover: an experimental study 0340-5443, GUP 41143

  • K. M. Martin-Smith; J. D. Armstrong; Jörgen Johnsson; Björn Thrandur Björnsson (2004).
    Growth hormone increases growth and dominance of wild juvenile Atlantic salmon without affecting space use 0022-1112, GUP 40786

  • L. Fredrik Sundström; Mare Lõhmus; R. H. Devlin; Jörgen Johnsson; C. A. Biagi; Torgny Bohlin (2004).
    Feeding on profitable and unprofitable prey: Comparing behaviour of growth-enhanced transgenic and normal coho salmon (Oncorhynchus kisutch) 0179-1613, GUP 41140

  • L. Fredrik Sundström; Torgny Bohlin; Jörgen Johnsson (2004).
    Density-dependent growth in hatchery-reared brown trout released into a natural stream 0022-1112, GUP 40813

  • L. Fredrik Sundström; E. Petersson; Johan Höjesjö; Jörgen Johnsson; T. Jarvi (2004).
    Hatchery selection promotes boldness in newly hatched brown trout (Salmo trutta): implications for dominance 1045-2249, GUP 41146

  • L. Fredrik Sundström; Mare Lõhmus; Jörgen Johnsson; R. H. Devlin (2004).
    Growth hormone transgenic salmon pay for growth potential with increased predation mortality 0962-8452, GUP 41077

Ekologisk zoologi

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