Anssi Karvonen

Summary

Country: Finland

Publications

  1. pmc Water temperature, not fish morph, determines parasite infections of sympatric Icelandic threespine sticklebacks (Gasterosteus aculeatus)
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyväskylä P O Box 35, FI 40014, Jyvaskyla, Finland
    Ecol Evol 3:1507-17. 2013
  2. pmc Synchronous attack is advantageous: mixed genotype infections lead to higher infection success in trematode parasites
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, PO Box 35, 40014 Jyvaskyla, Finland
    Proc Biol Sci 279:171-6. 2012
  3. ncbi request reprint Priming of host resistance to protect cultured rainbow trout Oncorhynchus mykiss against eye flukes and parasite-induced cataracts
    A Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, P O Box 35, FI 40014 University of Jyvaskyla, Finland
    J Fish Biol 76:1508-15. 2010
  4. doi request reprint Increasing water temperature and disease risks in aquatic systems: climate change increases the risk of some, but not all, diseases
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Jyvaskyla, Finland
    Int J Parasitol 40:1483-8. 2010
  5. doi request reprint Between-population similarity in intestinal parasite community structure of pike (Esox lucius)--effects of distance and historical connections
    Anssi Karvonen
    Department of Biological and Environmental Science, P O Box 35, Fl 40014 University of Jyvãskylä, Finland
    J Parasitol 95:505-11. 2009
  6. doi request reprint Host immunization shapes interspecific associations in trematode parasites
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Jyvaskyla, Finland
    J Anim Ecol 78:945-52. 2009
  7. doi request reprint Is the population genetic structure of complex life cycle parasites determined by the geographic range of the most motile host?
    Katja Riikka Louhi
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Finland
    Infect Genet Evol 10:1271-7. 2010
  8. pmc Genotype-specific vs. cross-reactive host immunity against a macroparasite
    Christian Rellstab
    Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
    PLoS ONE 8:e78427. 2013
  9. doi request reprint Prevalence of infection as a predictor of multiple genotype infection frequency in parasites with multiple-host life cycle
    Katja Riikka Louhi
    Department of Biological and Environmental Science, University of Jyvaskyla, PO Box 35, FIN 40014, Jyvaskyla, Finland
    J Anim Ecol 82:191-200. 2013
  10. doi request reprint Analysis of trematode parasite communities in fish eye lenses by pyrosequencing of naturally pooled DNA
    Christian Rellstab
    Centre of Excellence in Evolutionary Research, Department of Biological and Environmental Science, P O Box 35, FI 40014, University of Jyvaskyla, Finland
    Infect Genet Evol 11:1276-86. 2011

Detail Information

Publications17

  1. pmc Water temperature, not fish morph, determines parasite infections of sympatric Icelandic threespine sticklebacks (Gasterosteus aculeatus)
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyväskylä P O Box 35, FI 40014, Jyvaskyla, Finland
    Ecol Evol 3:1507-17. 2013
    ..Our results suggest complex interactions between water temperature and biotic factors in determining the parasite community structure, a pattern that may have implications for differentiation of stickleback morphs. ..
  2. pmc Synchronous attack is advantageous: mixed genotype infections lead to higher infection success in trematode parasites
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, PO Box 35, 40014 Jyvaskyla, Finland
    Proc Biol Sci 279:171-6. 2012
    ....
  3. ncbi request reprint Priming of host resistance to protect cultured rainbow trout Oncorhynchus mykiss against eye flukes and parasite-induced cataracts
    A Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, P O Box 35, FI 40014 University of Jyvaskyla, Finland
    J Fish Biol 76:1508-15. 2010
    ..The results suggest that this type of priming of host resistance is probably inefficient in preventing the deleterious effects of D. spathaceum infection in aquaculture conditions...
  4. doi request reprint Increasing water temperature and disease risks in aquatic systems: climate change increases the risk of some, but not all, diseases
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Jyvaskyla, Finland
    Int J Parasitol 40:1483-8. 2010
    ....
  5. doi request reprint Between-population similarity in intestinal parasite community structure of pike (Esox lucius)--effects of distance and historical connections
    Anssi Karvonen
    Department of Biological and Environmental Science, P O Box 35, Fl 40014 University of Jyvãskylä, Finland
    J Parasitol 95:505-11. 2009
    ....
  6. doi request reprint Host immunization shapes interspecific associations in trematode parasites
    Anssi Karvonen
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Jyvaskyla, Finland
    J Anim Ecol 78:945-52. 2009
    ..This implies that correlative results suggesting non-interactive community structure in general may be obscured by the sequence of previous parasite exposure and corresponding dynamics of host immunization...
  7. doi request reprint Is the population genetic structure of complex life cycle parasites determined by the geographic range of the most motile host?
    Katja Riikka Louhi
    Department of Biological and Environmental Science, Centre of Excellence in Evolutionary Research, University of Jyvaskyla, Finland
    Infect Genet Evol 10:1271-7. 2010
    ..Our results suggest that parasite dispersal in the definitive host may limit local cycling of the parasites in the intermediate host populations...
  8. pmc Genotype-specific vs. cross-reactive host immunity against a macroparasite
    Christian Rellstab
    Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland Biodiversity and Conservation Biology, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
    PLoS ONE 8:e78427. 2013
    ..Overall, our study is among the first to demonstrate cross-reactivity of adaptive immunity against genetically diverse macroparasites with complex life cycles. ..
  9. doi request reprint Prevalence of infection as a predictor of multiple genotype infection frequency in parasites with multiple-host life cycle
    Katja Riikka Louhi
    Department of Biological and Environmental Science, University of Jyvaskyla, PO Box 35, FIN 40014, Jyvaskyla, Finland
    J Anim Ecol 82:191-200. 2013
    ..Aggregation of MGIs in snail hosts appears to be widespread across different snail-trematode systems...
  10. doi request reprint Analysis of trematode parasite communities in fish eye lenses by pyrosequencing of naturally pooled DNA
    Christian Rellstab
    Centre of Excellence in Evolutionary Research, Department of Biological and Environmental Science, P O Box 35, FI 40014, University of Jyvaskyla, Finland
    Infect Genet Evol 11:1276-86. 2011
    ..Our study provides an example of how quantitative pyrosequencing can be used to answer evolutionary and ecological questions in natural communities of parasites...
  11. ncbi request reprint Resistance against eye flukes: naïve versus previously infected fish
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, P O Box 35, 40014, Jyvaskyla, Finland
    Parasitol Res 95:55-9. 2005
    ..0-89.1%. Parasite establishment was also affected by fish host density as fewer parasites were found in fish in higher densities. The implications of these results for the fish-farming industry and fish-stocking protocols are discussed...
  12. ncbi request reprint Eye fluke infection and lens size reduction in fish: a quantitative analysis
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, PO Box 35, 40014 Jyvaskyla, Finland
    Dis Aquat Organ 80:21-6. 2008
    ..It may also directly affect the overall optical performance of the lens and already impair host vision at low intensities of infection...
  13. ncbi request reprint Helminth assemblages of whitefish (Coregonus lavaretus) in interconnected lakes: similarity as a function of species specific parasites and geographical separation
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, P O Box 35, FI 40014, Finland
    J Parasitol 90:471-6. 2004
    ....
  14. ncbi request reprint Dynamics of Diplostomum spathaceum infection in snail hosts at a fish farm
    Anssi Karvonen
    Department of Biological and Environmental Science, University of Jyvaskyla, P O Box 35, 40014, Jyvaskyla, Finland
    Parasitol Res 99:341-5. 2006
    ..spathaceum, but also that snail prevention at farms could be conducted more efficiently by considering both size-dependent infection and the timing of cercarial release...
  15. ncbi request reprint Transmission dynamics of a trematode parasite: exposure, acquired resistance and parasite aggregation
    Anssi Karvonen
    Department of Biological and Environmental Science, P O Box 35, 40014 University of Jyväskylä, Finland
    Parasitol Res 92:183-8. 2004
    ..This is one of the few studies to demonstrate the development of resistance in fish against the parasite under natural conditions, and to attempt to separate exposure and susceptibility as causative agents of parasite aggregation...
  16. pmc Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis)
    Anna Faltýnková
    Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland
    Parasit Vectors 4:85. 2011
    ..We investigated metacercarial establishment and interspecific associations in the trematodes Ichthyocotylurus variegatus and I. pileatus co-infecting three age cohorts of young perch (Perca fluviatilis)...
  17. ncbi request reprint Ultraviolet B irradiation affects resistance of rainbow trout (Oncorhynchus mykiss) against bacterium Yersinia ruckeri and trematode Diplostomum spathaceum
    S Eveliina Markkula
    Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland
    Photochem Photobiol 83:1263-9. 2007
    ..Furthermore, UVB-irradiation altered the immunological and hematological parameters of fish, which also verified the immunomodulatory potential of UVB in the present study...