E. Tellervo Valtonen

Ph.D, Docent, Professor






SEPPÄLÄ, O. KARVONEN, A. & VALTONEN, E.T. 2011. Eye fluke-induced cataracts in natural fish populations: is there potential for host manipulation? Parasitology 138: 209-214.

A. FALTYNKOVA, A. KARVONEN & E. T. VALTONEN. 2011. Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis). Parasites and Vectors, in press.




PULKKINEN K, SUOMALAINEN L-R, READ A. F, EBERT, D, RINTAMÄKI P & VALTONEN, E. T. Intensive fish farming and the evolution of pathogen virulence: the case of columnaris disease in Finland. Proc. R. Soc. B.  22:  277 : 593-600.

VALTONEN, E. T., D. J. MARCOGLIESE & M. JULKUNEN 2010. Vertebrate diets derived from trophically-transmitted fish parasites in the Bothnian Bay. Oecologia, 162:139–152.

MIKHEEV. V. N., PASTERNAK, A. F., TASKINEN, J.  & VALTONEN, E. T. 2010. Parasite-induced aggression and impaired contest ability in a fish host. Parasites & Vectors 3:17 (8pp).

KARVONEN, A., RINTAMÄKI,P., JOKELA, J. & E. T. VALTONEN 2010. Increasing water temperature and disease risks in aquatic systems: climate change increases the risk of some, but not all, diseases. Int. J. Parasit. 40: 1483–1488.

VALTONEN, E.T. & GIBSON, D.I. 2010. Profile: Katarzyna Niewiadomska. Systematic Parasitology 76: 231-233.




FALTÝNKOVÁ, A., KARVONEN, A., JYRKKÄ, M. & VALTONEN, E.T. 2009.  Being successful in the world of narrow opportunities: transmission patterns of the trematode Ichthyocotylurus pileatus. Parasitology 136: 1375–1382. tutkassa

KUNTTU, H.M.T., SUOMALAINEN, L-R, JOKINEN,E.I. & VALTONEN, E.T. 2009. Flavobacterium columnare colony types: Connection to adhesion and virulence? Microbial Pathogenes 46: 21-27.  

KUNTTU, H. M.T.,VALTONEN, E.T.,  JOKINEN, E.I.  & L-R.SUOMALAINEN. 2009. Saprophytism of a fish pathogen as a transmission strategy. Epidemics 1: 96-100.

SEPPÄLÄ, O., KARVONEN, A., VALTONEN, E.T. & J. JOKELA. 2009. Interactions among co-infecting parasite species: a mechanism maintaining genetic variation in parasites? Proc. R. Soc. B (2009) 276, 691–697.

BENESH, D.P., HASU, T., SEPPÄLÄ, O.& VALTONEN, E.T. 2009. Seasonal changes in host phenotype manipulation by an acanthocephalan: time to be transmitted.  Parasitology 136: 219–230.

BENESH, D.P., SEPPÄLÄ, O. & VALTONEN, E.T. 2009. Acanthocephalan size and sex affect the modification of intermediate host coloration. Parasitology. 136: 847-854

HASU, T., BENESH, D.P. E.T. & VALTONEN. 2009. Differences in parasite susceptibility and costs of resistance between naturally exposed and unexposed host populations. J. Evol. Biol. 22: 699–707.

KARVONEN, A. & VALTONEN, E.T. 2009. Between-population similarity in intestinal parasite community structure of pike (Esox lucius) - effects of distance and historical connections. J. parasit. J. Parasitol., 95: 505–511.

KARVONEN, A., SEPPÄLÄ, O.  & VALTONEN E. T., 2009. Host immunization shapes interspecific associations in trematode parasites. Journal of Animal Ecology 78: 945-952.

KUNTTU, H. M.T., VALTONEN, E.T.,  SUOMALAINEN, L-R.,VIELMA, J. &  I. E.  JOKINEN. 2009. The   efficacy of two immunostimulants against Flavobacterium columnare infection in juvenile rainbow trout (Oncorhynhcus mykiss). Fish and Shellfish Immunology, 26:850-857

SUOMALAINEN, L-R., BANDILLA, M & VALTONEN ET 2009. Immunostimulants in prevention of columnaris disease of rainbow trout (Oncorhynchus mykiss Walbaum) J. Fish Diseases. 32:723-726.

VALTONEN, E.T. 2009. Review of “Fish diseases, Volumes 1 and 2.” by Jorge C. Eiras, Helmut Segner, Thomas Wahli and G.B. Kapoor 2008. Parasites and Vectors 2:46.




FALTÝNKOVÁ, A.,VALTONEN, E.T. & A. KARVONEN. 2008. Spatial and temporal structure of the trematode component community in Valvata macrostoma (Gastropoda, Prosobranchia).  Parasitology, 135, 1691–1699.

KARVONEN, A., SEPPÄLÄ, O.  & VALTONEN E. T., 2008. Host immunization shapes interspecific associations in trematode parasites. Journal of Animal Ecology 78: 945-952.

SEPPÄLÄ, O. KARVONEN, A. & VALTONEN, E.T. 2008. Shoaling behaviour of fish under parasitism and predation risk. Animal behaviour 75:145-150.

BLAZEK, R.D, BAGGE, A. & VALTONEN, E.T. 2008. Monogenean assemblages and the apparent transmission capability of monogeneans between related fish species: an experimental study. Parasitology  Research 102: 1359 - 1366.

BENESH, D.P., VALTONEN, E. T. & SEPPÄLÄ, O. 2008. Multidimensionality and intra-individual variation in host manipulation by an acanthocephalan.  Parasitology 135: 717-626.

BENESH, D. P., KITCHEN, J., PULKKINEN, K. & HAKALA, I. & VALTONEN, E.T.2008. The effect of Echinorhynchus borealis (Acanthocephala) infection on the anti-predator behavior of a benthic amphipod. J. Parasitology 94: 542-545.

SINISALO,T., JONES, R.I., HELLE, E & VALTONEN, E.T 2008. Changes in diets of individual Baltic ringed seals (Phoca hispida botnica) during their breeding season inferred from dual stable isotope ratios of multiple tissues. Marine Mammal Science, 24: 159-170.

HASU, T., JOKELA, J.& VALTONEN, E.T. 2008. Effects of growth factors and water source on laboratory cultures of a northern Asellus aquaticus (Isopoda) population.

Aquat. Ecol. 42:141–150.

SEPPÄLÄ, O., VALTONEN, E.T. & D. P. BENESH  2008. Host manipulation by parasites in the world of dead-end predators: adaptation to enhance transmission? Proc. R. Soc. B  275, 1611–1615.


Control of freshwater fish louse Argulus coregoni ­– a step towards integrated management strategy. DAO, 82: 67-77.

BANDILLA, M., HAKALAHTI-SIREN, T. & VALTONEN, E.T. 2008. Patterns of host switching in the fish ectoparasite Argulus coregoni.Behav Ecol Sociobiol 62:975–982.



KARVONEN, BAGGE, A.M &VALTONEN, E.T. 2007. Interspecific and intraspecific interactions in the monogenean communities of fish: a question of study scale?

Parasitology 134: 1237-1242.

MIKHEEV. V. N., PASTERNAK, A. F. & VALTONEN, E. T. 2007. Host specificity of Argulus coregoni (Crustacea: Branchiura) increases at maturation. Parasitology, 134: 1767-1774.

SANTOS, M.J., KARVONEN, A., PEDRO J.C., FALTYNKOVA A., SEPPÄLÄ, O. &VALTONEN, E.T. 2007. Qualitative and quantitative behavioral traits in a community of furcocercariae trematodes: tools for species separation?

 J. Parasit. 93: 1319-1323.

FALTÝNKOVÁ, A., NIEWIADOMSKA, K., SANTOS, M.J. & VALTONEN, E.T. 2007. Furcocercous cercariae (Trematoda) from freshwater molluscs in Central Finland. Acta Parasitology 52: 310–317.

SEPPÄLÄ, O., KARVONEN, A. & VALTONEN, E.T. 2007. Phenotypic Variation in Infectivity of Diplostomum spathaceum Cercariae within a Population. J. Parasit. 93: 1244-1246.


Introduced bullheads (Cottus gobio L.) and infections of plerocercoid larvae of the tapeworm Schistocephalus cotti in the Utsjoki, an Arctic river in Finland. J. Fish Biology 70: 1865-1876.

BENESH, D.P. & VALTONEN, E.T. 2007.Effects of Acanthocephalus lucii (Acanthocephala) on intermediate host survival and growth: implications for exploitation strategies. J. Parasit.93: 735-741.

BENESH, D.P. & VALTONEN, E.T. 2007. Proximate factors affecting the larval life history of Acanthocephalus lucii (Acanthocephala).  J. Parasit.93: 742-749.

BENESH, D.P. & VALTONEN, E.T. 2007. Sexual differences in larval life history traits of acanthocephalan cystacanths.  Int. J. Parasit. 37: 191-198.

MARKKULA, E.S., KARVONEN, A., SALO, H., VALTONEN, E.T. & E.I. JOKINEN, 2007. Ultraviolet B Irradiation affects resistance of rainbow trout (Onchorhynchus mykiss) against bacterium Yersinia ruckeri and trematode Diplostomum spathaceum. Photochemistry and photobiology 83: 1-7.

HASU, T., HOLMES, J.C. & VALTONEN, E.T. 2007. Isopod size (Asellus aquaticus) and acanthocephalan (Acanthocephalus lucii) infections. J. Parasitology 93: 450-457.

NIEWIADOMSKA, K. & VALTONEN, E.T 2007. Morphology, development and probable systematic position of Cercariaeum crassum Wesenberg-Lund, 1934 (Digenea), a parasite of Pisidium amnicum in eastern Finland.  Systematic Parasitology, 68: 147-154.

BANDILLA, M., HAKALAHTI-SIREN, T. & VALTONEN, E.T. 2007. Experimental evidence for a hierarchy of mate and host induced cues in a fish ectoparasite, Argulus coregoni (Crustacea: Branchiura). Int. J. Parasit. 37: 1343-1349.

 BENESH, D. P., VALTONEN, E.T. & JORMALAINEN V. 2007. Reduced survival  associated with precopulatory mate guarding in male Asellus aquaticus (Isopoda). Ann. Zool. Fenn. 44: 425-434.




BENESH, D.P., HASU, T., SUOMALINEN, L-R., VALTONEN, E.T. & TIIROLA, M. 2005. Reliability of mitochondrial DNA in an acanthocephalan: The problem of speudogenes.International Journal for Parasitology, 36:247-254.

HASU, T., VALTONEN, E.T. & JOKELA, J. 2006.  Costs of parasite resistance for female survival and parental care in a freshwater isopod . Oikos 114: 322-328.  

SEPPÄLÄ, O., KARVONEN, A.  VALTONEN, E.T. 2006. Susceptibility of eye fluke infected fish to predation by bird hosts. Parasitology 132: 575-579.

SEPPÄLÄ, O., KARVONEN, A. & VALTONEN, E.T. 2006. Host manipulation by parasites and risk of non-host predation: is manipulation costly in an eye fluke–fish interaction? Evolutionary Ecology Research 8: 871-879.

KARVONEN, A., CHENG, G.-H. & SEPPÄLÄ,O. & VALTONEN,E.T. 2006. Intestinal distribution and fecundity of two species of Diplostomum parasites in definitive hosts. Parasitology, 132: 357-362.


 Ecological divergence of closely related Diplostomum (Trematoda) parasites. Parasitology, 133: 229-235.


Dynamics of Diplostomum spathaceum infection in snail hosts at a fish farm. Parasitology Research 99: 341-345.

SUOMALAINEN, L.-R., KUNTTU, H., HIRVELÄ-KOSKI, V., VALTONEN, E.T. & TIIROLA, M 2006.  Molecular diversity and growth features of Flavobacterium columnare –strains isolated in Finland. Dis. Aq. Organisms, 70:55-61.

SUOMALAINEN, L.-R. & TIIROLA, M. & VALTONEN, E.T. 2006. Chondroitin AC lyase activity is related to virulence of fish pathogenic Flavobacterium columnare.    Journal of Fish  Diseases, 29: 757-763.

SUOMALAINEN L-R, REUNANEN. H., IJÄS, R., VALTONEN E.T.& TIIROLA.M.2006. Freezing induces biased results in the molecular detection of Flavobacterium columnare. Applied and Environmental Microbiology 72: 1702-1704.


Evidence of enhanced bacterial invasion during Diplostomum spathaceum infection in European grayling, Thymallus thymallus (L.). Journal of Fish Diseases 29: 79-86.

FENTON, A., HAKALAHTI, T., BANDILLA, M. & VALTONEN, E.T. 2006. The impact of variable hatching rates on parasite control: a model of an aquatic ectoparasite in a Finnish fish farm. Journal of Applied Ecology 43: 660-668.

HAKALAHTI, T., KARVONEN, A. & VALTONEN, E. T. 2006. Climate warming and disease risks in temperate regions-Argulus coregoni and and Diplostomum spathaceum as case studies. Journal of Helminthology, 80:93-98.


HAKALAHTI, T. 2006. A link between ectoparasite infection and susceptibility to bacterial disease in rainbow trout. Int.J. Parasit. 36:987-991.

SINISALO,T., VALTONEN, E.T., HELLE, E & JONES, R.I. 2006.Combining stable isotope  and intestinal parasite information to evaluate dietary differences between individual ringed seals (Phoca hispida botnica). Canadian Journal of Zoology 84: 823-831.

CHUBB, J.C., SEPPÄLÄ, T., LÜSCHER, A., MILINSKI, M. AND VALTONEN, E.T. 2006. Schistocephalus cotti n. sp. (Cestoda: Pseudophyllidea) plerocercoids from bullheads Cottus gobio L. in an Arctic river in Finland, with a key to the plerocercoids of the Palearctic species of the genus. Systematic Parasitology 65: 161-170.



SUOMALAINEN, L.-R., TIIROLA, M. & VALTONEN, E.T. 2005.The effect of Pseudomonas sp. MT5 baths on Flavobacterium columnare infection and on microbial diversity on fish skin and gills. Diseases of Aquatic Organisms 63: 61-68.

SUOMALAINEN, L.-R., TIIROLA, M. & VALTONEN, E.T. 2005. Influence of rearing conditions on Flavobacterium columnare infection of rainbow trout. J. Fish Diseases 28: 271-277.

SUOMALAINEN, L.-R., TIIROLA, M. & VALTONEN, E.T. 2005.  Treatment of columnaris disease of rainbow trout -Low Ph and salt as possible tools. Diseases of Aquatic Organisms 65: 115-120.

BAGGE, A., SASAL, P., VALTONEN, E.T. & KARVONEN, A. 2005. Infracommunity level aggregation in the monogenean communities of Crucian carp (Carassius carassius). Parasitology, 131: 367-372.

KARVONEN, A., BAGGE, A. & VALTONEN, E.T. 2005. Parasite assemblages of Crucian carp (Carassius carassius)- is depauperate composition explained by lack of parasite exchange, extreme environmental conditions or host unsuitability? Parasitology 131: 273-278.  

KARVONEN, A., PAUKKU, S., SEPPÄLÄ, O.  & VALTONEN E. T., 2005. Resistance against eye flukes: naïve versus previously infected fish. Parasitology Research, 95: 55-59.

BANDILLA, M., HAKALAHTI, T., HUDSON, P. J. & VALTONEN, E.T. 2005.  Aggregation in Argulus coregoni (Crustacea: Branchiura): a consequence of host susceptibility or exposure? .  Parasitology, 130: 169-176.

RINTAMÄKI-KINNUNEN, P., RAHKONEN M., MANNERMAA-KERÄNEN, A-L., SUOMALAINEN, L-R.,  MYKRÄ, H. & VALTONEN,  E.T. 2005.Treatment of ichthyophthiriasis after malachite green: I. Concrete tanks at salmonid farms. Diseases of Aquatic Organisms, 64: 69-76.

RINTAMÄKI-KINNUNEN, P., RAHKONEN, M., MYKRÄ, H. & VALTONEN, E.T. 2005.Treatment of ichthyophthiriasis after malachite green: II Earth ponds at salmonid farms. Diseases of Aquatic Organisms. 66: 15-20.

SEPPÄLÄ, O., KARVONEN, A. & VALTONEN, E.T. 2005. Manipulation of fish host by eye flukes in relation to cataract formation and parasite infectivity. Animal Behaviour 70: 889-894.

SEPPÄLÄ, O., KARVONEN, A. & VALTONEN, E.T. 2005. Impaired crypsis of fish infected with a trophically transmitted parasite. Animal Behaviour 70: 895-900.

KARVONEN, A., CHENG, G.-H. & VALTONEN, E.T. 2005. Within-lake dynamics in the similarity of parasite assemblages of perch (Perca fluviatilis). Parasitology 131: 817-823.

KARVONEN, A., HAKALAHTI, T., SEPPÄLÄ, O & VALTONEN, E.T. 2005.Sustainable production of healthy fish- tackling parasitic threats with knowledge on their ecology. In:  A. Jalkanen & P. Nygren (eds): Sustainable use of renewable natural resources- from principles to practices. University of Helsinki Department of Forest Ecology Publications 34: 77-88 (e-publication).  

HAKALAHTI, T., BANDILLA, M. & VALTONEN, E. T. 2005. Delayed transmission of a parasite is compensated by accelerated growth. Parasitology, 131: 647-656.

MIKHEEV,V.N, PASTERNAK, A. F.&VALTONEN, E.T. 2005. Behavioural aspects of interactions between fish and parasites. Proceedings of the Int. Conference, Borok, Russia. 340-344.



HAKALAHTI, T., HÄKKINEN, H. & VALTONEN, E.T. 2004.Ectoparasitic Argulus coregoni (Crustacea: Branchiura) hedge their bets - studies on egg hatching dynamics. Oikos,107: 295-302.

SEPPÄLÄ, O., KARVONEN, A. & VALTONEN, E.T. 2004. Parasite-induced change in host behaviour and susceptibility to predation in an eye fluke-fish interaction.  Animal Behaviour 68: 257-263.

BAGGE, A., POULIN, R. & VALTONEN, E.T. 2004. Fish population size, and not density, as the determining factor of parasite infection: a case study. Parasitology, 128: 305-313.

HAKALAHTI, T., PASTERNAK, A.F. & VALTONEN , E.T. 2004. Seasonal dynamics of egg laying and egg-laying strategy of the ectoparasite Argulus coregoni (Crustacea: Branchiura). Parasitology  128: 655-660.

RINTAMÄKI-KINNUNEN,P., KARVONEN, A., ANTTILA, P. & VALTONEN, E. T. 2004. Diplostomum spathaceum metacercarial infection and colour change in salmonid fish. Parasitology Research 93: 577-581

SINISALO, T., POULIN, R., HÖGMANDER, H., JUUTI, T. & VALTONEN, E.T. 2004. The impact of sexual selection of Corynosoma magdaleni (Acanthocephala) infrapopulations in Saimaa ringed seals (Phoca hispida saimensis). Parasitology  128: 179-185.

KARVONEN, A., HUDSON, P., SEPPÄLÄ, O. & VALTONEN, E.T. 2004. Transmission dynamics of a trematode parasite: exposure, acquired resistance and parasite aggregation. Parasitology Research, 92: 183-188.

PASTERNAK, A.,  MIKHEEV. V. &  VALTONEN, E. T.  2004. Growth and development of Argulus coregoni (Crustacea: Branchiura) on salmonid and cyprinid hosts. Diseases of Aquatic Organisms 58: 203-207.

MIKHEEV. V. N., PASTERNAK, A. F.  & VALTONEN, E. T.  2004.Tuning host specificity during the ontogeny of a fish ectoparasite: behavioural responses to host induced cues. Parasitology Research 92: 220-224.

KARVONEN, A. & VALTONEN, E.T. 2004. Helminth assemblages of whitefish (Coregonus lavaretus s.l.) in interconnected lakes: similarity as a function of species specific parasites and geographical separation.  J. Parasit. 90: 471-476.

KARVONEN, A., KIRSI, S., HUDSON, P. & VALTONEN, E.T. 2004.  Patterns of cercarial production from Diplostomum spathaceum: terminal investment of bet hedging. Parasitology, 129: 87-92.

KARVONEN, A.,  SEPPÄLÄ, O. & VALTONEN, E.T. 2004.  Parasite resistance and avoidance behaviour in preventing eye fluke infections in fish. Parasitology 129: 159-164.

KARVONEN, A., SEPPÄLÄ, O. & VALTONEN, E.T.2004. Eye fluke-induced cataract formation in fish: quantitative analysis using an ophthalmological microscope. Parasitology,129, 473-478..

HAKALAHTI, T., LANKINEN, Y. & VALTONEN, E.T.2004. Efficacy of emamectin benzoate in the control of Argulus coregoni (Crustacea: Branchiura) on rainbow trout (Oncorhynchus mykiss). Diseases of Aquatic Organisms, 60: 197-204.

VALTONEN, E.T., HELLE, E. & POULIN, R. 2004. Stability of Corynosoma populations with fluctuating population densities of the seal definitive host. Parasitology 129:635-642.

PULKKINEN, K., KARVONEN, A. & VALTONEN, E.T. 2004. Lapamato-harvinainen muttei hävinnyt. Duodecim 120 (15): 1912.

MIKHEEV. V. N., PASTERNAK, A. F.  & VALTONEN, E. T.  2004Adaptive Significance of the Sexual Size Dimorphism in the Fish Ectoparasite Argulus coregoni(Crustacea: Branchiura).  Doklady Biological Sciences, Vol. 399,. 477–480. Translated from Doklady Akademii Nauk, Vol. 399, No. 2, 2004, pp. 282–285.



VALTONEN, E.T., HOLMES, J.C., ARONEN, J. & RAUTALAHTI, I. 2003. Parasite communities as indicators of recovery from pollution: parasites of roach (Rutilus rutilus) and perch (Perca fluviatilis) in Central Finland. Parasitology 126: S43-S52.

VALTONEN, E.T., PULKKINEN, K. & JULKUNEN, M. 2003. Getting to the core of the parasite communities: revealing the exchange patterns among sympatric host species. In: C.C.Combes & J. Jourdane, eds. Taxonomy, Ecology and Evolution of Metazoan Parasites II. pp.287-311. PUP, Perpignan, France.

KARVONEN, A.,  PAUKKU,S., VALTONEN, E.T & HUDSON, P. J.  2003. Transmission, infectivity and survival of Diplostomum spathaceum cercariae.  Parasitology. 127: 217-224.

SINISALO, T. & VALTONEN. E.T. 2003. Corynosoma acanthocephalans in their paratenic fish hosts in the Northern Baltic Sea. Parasite 10: 227-233.

MIKHEEV, V., PASTERNAK, A. & VALTONEN, E.T. 2003. How do fish ectoparasites Argulus spp. (Crustacea: Branchiura) match with their hosts at the behavioural and ecological scales?" Journal of General Biology (Zhurnal Obshchei Biologii) 2003, 64: 238-247.

SINISALO, T., KUNNASRANTA, M. & VALTONEN, E.T. 2003. Intestinal helminths of a landlocked ringed seal (Phoca hispida saimensis) population in the Eastern Finland. Parasitology Research, 91: 40-45.

HAKALAHTI, T. & VALTONEN, E.T. 2003. Population structure and recruitment of the ectoparasite Argulus coregoni Thorell (Crustacea: Branchiura) on a fish farm. parasitology 127: 79-85.

TIIROLA, M., SARKASUO, M., VALTONEN, E.T. & KULOMAA, M. 2003. Survival of fish pathogen Yersinia ruckeri in anaerobic methanogenic bioreactor detected by cultivation and PCR. Jyväskylän yliopiston Biologian laitoksen tiedonantoja 79: 131-134.



NICKOL, B.B., HELLE, E. & VALTONEN, E.T.  2002. Corynosoma magdaleni in gray seals from the Gulf of Bothnia, with emended descriptions of  C. strumosum. and C. magdaleni. J. Parasit. 88: 1222-1229.

PYLKKÖ, P., LYYTIKÄINEN, T., RITOLA, O., PELKONEN, S.& VALTONEN, E.T. 2002. Temperature effect on the immune defence functions of Arctic charr (Salvelinus alpinus). Dis. Aquatic Organisms 52: 47-55.

TIIROLA, M., VALTONEN, E.T., RINTAMÄKI-KINNUNEN, P. & KULOMAA, M. 2002. Diagnosis of flavobacteriosis by direct amplification of the rRNA genes. Dis. Aquat.Org. 51: 93-100.

POULIN, R. & VALTONEN, E.T. 2002.  The predictability of helminth community structure in time and space: a comparison of fish populations from adjacent lakes. Int. J. Parasit. 32: 1235-1243.

JENEY, Z., VALTONEN, E.T., JENEY, G. & JOKINEN, E.I. 2002. Effect of pulp and paper mill effluent (BKME)on physiological parameters of roach (Rutilus rutilus ) infected by the digenean Rhipidocotyle fennica. Folia Parasitologica, 49: 103-108.

VALTONEN, E.T., RAHKONEN, M., MANNERMAA-KERÄNEN, A-L., SUOMALAINEN, L-R., RINTAMÄKI-KINNUNEN, P., LANKINEN, Y., RAHKONEN, R., JÄMSÄ, K., KONTTINEN, E., KANNEL, R. 2002. Experiments in Finland to control white spot disease at fish farms. Bulletin of European Association of Fish pathology 22: 155.



VALTONEN, E.T., PULKKINEN, K., POULIN, R. & JULKUNEN, M. 2001.The structure of parasite component communities in brackish water fishes of the northeastern Baltic Sea.  Parasitology 122: 471-481.

BELL, A. S., SOMMERVILLE, C. & VALTONEN, E. T. 2001. A molecular phylogeny of the genus Ichthyocotylurus (Digenea, Strigeidae). Int. J. Parasit. 31: 833-842.

POULIN, R. & VALTONEN, E.T. 2001. Interspecific associations among larval helminths in fish. Int. J. Parasit. 31: 1589-1596.

MIKHEEV, V.N., PASTERNAK, A. F., VALTONEN, E.T. & LANKINEN, Y. 2001. Spatial distribution and hatching of overwintered eggs of a fish ectoparasite, Argulus coregoni (Crustacea: Branchiura). Dis. Aq. Organisms 46: 123-128.

POULIN, R. & E.T. VALTONEN. 2001. Nested assemblages resulting from host size variation: the case of endoparasite communities in fish hosts.  Int. J. Parasit.31:1194-1204.



MIKHEEV, V.N, MIKHEEV,A., PASTERNAK,A. F. & VALTONEN,E.T. 2000. Light mediated host searching strategies in a fish ectoparasites, Argulus foliaceus L. (Crustacea: Branchiura). Parasitology, 120: 409-416. 

PASTERNAK, A. F., MIKHEEV, V.N. & VALTONEN, E.T. 2000. Life history characteristics of Argulus foliaceus L. (Crustacea: Branchiura) populations in Central Finland. Ann. Zool. Fenn. 37: 25-35.

PULKKINEN, K., PASTERNAK, A.F., HASU,T. & VALTONEN, E.T. 2000. Effect of Triaenophorus crassus (Cestoda) infection on the behavior and susceptibility to predation of the first intermediate host Cyclops strenuus (Copepoda). J. Parasitol. 86: 664-670.

VÄYRYNEN, T., SIDDALL, R., VALTONEN, E.T. & TASKINEN.J. 2000. Patterns of trematode parasitism in lymnaeid snails from northern and central Finland. Ann. Zool. Fenn. 37: 189-199.

HALMETOJA, A., VALTONEN, E.T. & KOSKENNIEMI, E. 2000. Perch (Perca fluviatilis L.) parasites reflect ecosystem conditions: a comparison of a natural lake and two acidic reservoirs in Finland. Int. J. Parasit. 30: 1437-1444.

VALTONEN, E.T., PULKKINEN, K. & JULKUNEN, M. 2000.  Getting to the core of the parasite communities: separating reality from noise. Bull. Scand. Soc. Parasitol. 10: 61-64.




PULKKINEN, K., VALTONEN, E.T., NIEMI, A. & POIKOLA, K. 1999. The influence of food competition and host specificity on the transmission of Triaenophorus crassus (Cestoda) and Cystidicola farionis (Nematoda) to Coregonus lavaretus and Coregonus albula (Pisces: Coregonidae) in Finland. Int. J.Parasitol. 29: 1753-1763.

PULKKINEN, K. & VALTONEN, E.T. 1999.Accumulation of plerocercoids of Triaenophorus crassus in the second intermediate host Coregonus lavaretus and their effect on growth of the host. J. Fish Biol. 55: 115-126.

BAGGE, A & VALTONEN, E.T. 1999. Development of the monogenean communities on the gills of roach fry (Rutilus rutilus). Parasitology 118: 479-487.

PASTERNAK, A. F., PULKKINEN, K., MIKHEEV, V.N., HASU.T. & VALTONEN, E.T. 1999. Factors affecting abundance of Triaenophorus infection in Cyclops strenuus, and parasite-induced changes in host fitness. Int. J. Parasitol. 29: 1793-1801.



PULKKINEN, K. & VALTONEN, E.T. 1998. The use of parasites as tags to elucidate differences between whitefish populations. Arch. Hydrobiol. Spec. Issues Advanc. Limnol. 50: 257-271.

RAHKONEN, R. & VALTONEN, E.T. 1998. Role of water temperature on the size, migration activity and pathogenity of Diphyllobothrium dendriticum (Cestoda) plerocercoids in brown trout Salmo trutta m. lacustris (L.). Ann. Zool. Fenn.35: 107-113.

RANTANEN, J. T., VALTONEN, E.T. & HOLOPAINEN, I.J. 1998. Digenean parasites of the bivalve mollusc Pisidium amnicum in a small river in Eastern Finland. Dis. Aq. Org 33: 201-208.

MIKHEEV, V., VALTONEN, E.T. & RINTAMÄKI-KINNUNEN, P. 1998. Host searching in Argulus foliaceus L. (Crustacea: Branchiura): the role of vision and selectivity. Parasitology 116: 425-430.



HAAPARANTA, A., VALTONEN, E.T. & HOFFMANN, R. 1997. Gill anomalies of perch   and roach  from four lakes differing in water quality. Journal of Fish Biology 50: 575-591.

VALTONEN, E.T. & GIBSON, D.I. 1997.  Aspects of the biology of diplostomid metacercarial (Digenea) populations occurring in fishes in different localities of Northern Finland. Ann. Zool. Fenn. 34: 47-59.

AALTONEN , T.M.,  VALTONEN,  E.T. , & JOKINEN, E.I.  1997. Humoral response of roach (Rutilus rutilus) to digenean Rhipidocotyle fennica infection. Parasitology 114: 285-291.

SIDDALL, R., KOSKIVAARA, M. & VALTONEN, E.T. 1997. Dactylogyrus  (Monogenea) infections on the gills of roach (Rutilus rutilusL.) experimentally exposed to pulp and paper  mill effluent.   Parasitology 114: 439-446.

VALTONEN, E.T., HOLMES, J.C. & KOSKIVAARA, M. 1997. Eutrophication, pollution and fragmentation: effects on  parasite communities in roach (Rutilus rutilus) and perch (Perca fluviatilis) in four lakes in Central Finland.   Canadian  Journal Aquatic Fisheries Sciences 54: 572-585.

HOLOPAINEN, I. J., LAMBERG, S., E. T. VALTONEN & RANTANEN. J. 1997. Effects of parasites on life history of the freshwater bivalve, Pisidium amnicum, in Eastern Finland. Arch. hydrobiol.139: 461-477.

RAHKONEN, R. & VALTONEN, E.T. 1997. Infection of brown trout  with  Diphyllobothrium dendriticum  procercoids.  Int. J. Parasit. 27:1315-1318.

RINTAMÄKI-KINNUNEN, P. & VALTONEN, E.T. 1997. Epizootiology of protozoans in farmed salmonids at northern latitudes. Int. J. Parasit. 27: 89-99.

AALTONEN, T., VALTONEN, E.T. & JOKINEN, E.I. 1997. Immunoreactivity of roach, Rutilus rutilus,  following laboratory exposure to bleached pulp and paper mill effluents. Ecotox. Environ. Safety 38: 266-271.

NIEWIADOMSKA, K., VALTONEN, E.T. & SIDDALL, R. 1997. Cercariae from Lymnea stagnalis in lake Kuuhankavesi ( Central Finland). Acta Parasitologica 42: 132-137.

TASKINEN, J., MÄKELÄ, T. & VALTONEN, E.T. 1997. Exploitation of Anodonta piscinalis (Bivalvia) by trematodes: parasite tactics and host longevity. Ann. Zool. Fenn.34: 37-46.

VALTONEN, E.T., HOLMES, J.C. & KOSKIVAARA, M. 1997. Effects of pollution and other anthropogenic changes on parasite communities in roach (Rutilus rutilus) and perch (Perca fluviatilis) in four lakes in central finland. Parassitologia, in press. ref.



HAAPARANTA,  A.,  VALTONEN,  E.T. , HOFFMANN,  R.  & HOLMES, J.C. 1996. Do macrophage centres in freshwater fishes reflect the differencies in water quality. Aquatic toxicology 34: 253-272.

JENEY, Z., VALTONEN, E.T.,JENEY, G. &JOKINEN, E.I. 1996. Effects of pulp and paper mill effluent (BKME) on physiology and biochemistry of the roach (Rutilus rutilus L.).  Archives of Environmental Contamination and Toxicology 30:523-529.

LAITINEN, M. , SIDDALL, R. & VALTONEN, E.T. 1996. Bioelectronic monitoring of parasite-induced stress in brown trout and roach.  J. Fish Biology 48:228-241.

RINTAMÄKI-KINNUNEN, P. & VALTONEN, E.T. 1996. Finnish salmon resistant to Gyrodactylus salaris: a long term study at fish farms.   Int. J. Parasit. 26:723-732.

BAGGE, A. & VALTONEN, E.T. 1996. Experimental study on the influence of paper and pulp mill effluent  on the  gill parasite communities of  roach (Rutilus rutilus).  Parasitology 112: 499-508.



TASKINEN, J. & VALTONEN, E. T. 1995. Age-, size-, and sex-specific infection of Anodonta piscinalis (Bivalvia: Unionidae) with Rhipidocotyle fennica (Digenea: Bucephalidae) and its influence on host reproduction.  Can.J. Zool. 73: 887-897.

JOKINEN E. I., AALTONEN, T. & VALTONEN, E. T. 1995. Subchronic effects of pulp and paper mill effluents on the immunoglobulin synthesis of roach Rutilus rutilus.Ecotoxicol. and Environmental Safety 32: 219-225.

CHUBB, J. C., VALTONEN, E. T., McGEORGE, J. & HELLE, E. 1995. Characterization of the external features of Schistocephalus solidus (Müller, 1776) (Cestoda) from different geographic regions and an assesment of the status of the Baltic ringed seal Phoca hispida botnica (Gmelin) as a definitive host. Systematic Parasitology 32: 113-123.

HIETALA, J., VALTONEN, E. T. & AALTONEN, T. 1995. Experimental infection of brown trout, Salmo trutta L., using a Finnish Yersinia ruckeri isolate. Aquaculture, 136:11-20.

VALTONEN, E.T. & JULKUNEN, M. 1995  Influence of the transmission of parasites from prey fishes on the composition of the parasite community of a predatory fish.  Canadian Aquatic Fisheries Sciences 52 ( Suppl. 1.): 233-245.



VALTONEN, E. T. & KOSKIVAARA, M. 1994. Relationships between the parasites of some wild and cultured fishes in two lakes and a fish farm in Central Finland. International Journal for Parasitology 24:109-118.

HAAPARANTA, A., VALTONEN, E. T. & HOFFMANN, R. 1994. Pathogenicity and seasonal occurrence of Henneguya creplini  (Protozoa, Myxosporea) on the gills of perch Perca fluviatilis in central Finland.  Diseases of Aquatic Organisms  20:15-22.

VALTONEN, E. T., HAAPARANTA, A. & HOFFMANN, R. 1994. Occurrence and histological response of Raphidascaris acus (Nematoda: Ascaridoidea) in roach from four lakes differing in water quality. International Journal for Parasitology 24: 197-206.

TASKINEN, J., VALTONEN, E. T. & MÄKELÄ, T. 1994 Quantity of sporocysts and seasonality of two Rhipidocotyle species (Digenea, Bucephalidae) in Anodonta piscinalis (Mollusca, Bivalvia). International Journal for Parasitology 24, 877-886.

AALTONEN, T.M., JOKINEN, E. I. & VALTONEN, E. T. 1994 Antibody synthesis in   roach (Rutilus rutilus); analysis of antibody secreting cells in lymphoid organs with ELISPOT-assay.  Fish and Shellfish Immunology 4: 129-140.

VÄINÖLÄ, R., VALTONEN, E. T. & GIBSON, D. I. 1994. Molecular systematics in the acanthocephalan genus Echinorhynchus (sensu lato) in northern Europe. Parasitology 108: 105-114.



HAAPARANTA, A., VALTONEN, E. T. & HOFFMANN, R. 1993. Heart   inflammations in pearch (Perca fluviatilis) and roach (Rutilus rutilus) from Central Finland. Diseases of Aquatic Organisms 17: 25-32.

VALTONEN, E. T., TUUHA, H. & PUGACHEV, O. N. 1993. Seasonal studies of the   biology of Achtheres percarum in perch, Perca fluviatilis, from four Finnish lakes over 3- year period. J. Fish. Biol. 43:621-632.



ANDERSEN, K. I. & VALTONEN, E. T. 1992. Segregation and co-occurrence of larval   cestodes in freshwater fishes in the Bothnian Bay, Finland Parasitology 104: 161-168.

KOSKIVAARA, M. & VALTONEN, E. T. 1992. Dactylogyrus (Monogenea)   communities on the gills of roach in three lakes in Central Finland. Parasitology 104: 263- 272.

HALMETOJA, A., VALTONEN, E. T. & TASKINEN, J. 1992. Trichodinids   (Protozoa) on fish from four Central Finnish lakes of differing water quality. Aqua Fennica 22: 59-70.

TUUHA, H., VALTONEN E. T. & TASKINEN, J. 1992. Ergasilid copepods as parasites of  perch Perca fluviatilis and roach, Rutilus rutilus in Central Finland: seasonality,  maturity and environmental influence. Journal of Zoology 228: 405-422.

VALTONEN, E. T., RINTAMÄKI, P. & KOSKIVAARA, M. 1992. Occurrence and   pathogenicity of Yersinia ruckeri at fish farms in northern and central Finland. Journal of Fish Diseases 15: 163-171.

KOSKIVAARA, M., VALTONEN, E. T. & VUORI, K. M. 1992. Microhabitat   distribution and coexistence of Dactylogyrus species (Monogenea) on the gills of roach. Parasitology 104: 273-281.

GIBSON, D. I., TASKINEN, J. & VALTONEN, E. T. 1992. Studies on bucephalid   digeneans parasitising molluscs and fishes in Finland. II The description of Rhipidocotyle fennica n.sp. and its discrimination by principal components analysis. Systematic Parasitology 23: 67-79.



KOSKIVAARA, M. & VALTONEN, E. T. 1991. Paradiplozoon homoion (Monogenea) and some other gill parasites on roach Rutilus rutilus in Finland. Aqua Fennica 21: 137-143

RINTAMÄKI, P. & VALTONEN. E. T. 1991. Aeromonas salmonicida in Finland:   pathological prob­lems associated with atypical and typi­cal strains. Journal of Fish Diseases 14: 323-331.

KOSKIVAARA, M., VALTONEN, E. T. & PROST, M. 1991. Dactylogyrids on the   gills of roach in Central Finland: features of infection and species composition. International Journal for Parasitology 21: 565-572.

KOSKIVAARA, M., VALTONEN, E. T. & PROST, M. 1991. Seasonal occurrence of   gyrodactylid monogeneans on the roach (Rutilus rutilus) and variations between four lakes of differing water quality in Finland. Aqua Fennica 21: 47-55.

TASKINEN, J., VALTONEN. E. T. &  GIBSON, D. I. 1991. Studies on bucephalid   digeneans parasitising molluscs and fishes in Finland. I. Ecological data and experimental studies. Systematic Parasitology 19: 81-94.

BRUMMER‑KORVENKONTIO, H., VALTONEN, E. T. & PUGACHEV, O. N. 1991.   Myxosporea parasites in roach, Rutilus rutilus (Linnaeus), from four lakes in central Finland. Journal of Fish Biology 38: 1-14.

JOKELA, J., VALTONEN, E. T. & LAPPALAINEN, M. 1991. Development of glochidia of  Anodonta piscinalis and their infection of fish in a small lake in northern Finland. Archiv.  Hydrobiol. 120: 345-355.



ANDERSEN, K. I. & VALTONEN, E. T. 1990. On the infracommunity structure of   adult cestodes in freshwater fishes. Parasitology 101: 257-264.

VALTONEN, E. T. & CROMPTON D. W. T. 1990. Acanthocephala in fish from the   Bothnian Bay, Finland. Journal of Zoology, London 220: 619‑639.

VALTONEN, E. T., PROST, M. & RAHKONEN, R. 1990. Seasonality of two gill   monogeneans from two freshwater fish from an oligotrophic lake in Northeast Finland. International Journal for Parasitology 20: 101‑107.



VALTONEN, E. T., RINTAMÄKI, P. & LAPPALAINEN, M. 1989. Triaenophorus   nodulosus and T. crassus in fish from Northern Finland. Folia Parasitologica 36: 351‑370.

KOSKIVAARA, M. & VALTONEN, E. T. 1989. Monogenean parasites of the roach   (Rutilus rutilus) and their seasonal occurrence in four lakes in Central Finland. In: Bauer O.N. (ed.) Parasites at freshwater fishes of North‑West Europe. Petrozavodsk, pp. 70‑73.

RAHKONEN, R. & VALTONEN, E. T. 1989. The ecology of Crepidostomum species   (Allocreadiidae: Digenea) in the salmonoids of Lake Yli‑Kitka in northeastern Finland. Folia Parasitologica 36: 13‑24.

VALTONEN, E. T. and KOSKIVAARA, M. 1989. Effects of effluent from a paper and   pulp mill on parasites of the roach in Central Finland. In Bauer O. N. (ed.). Parasites of freshwater fishes of North‑West Europe. Petrozavodsk pp. 163‑168.

VALTONEN, E. T. & RINTAMÄKI, P. 1989. Occurrence of Proteocephalus percae and   P. cernuae in the perch and ruff in northern Finland. Folia Parasitologica 36: 33‑42.



VALTONEN, E. T., FAGERHOLM, H. P. & HELLE, E. 1988. Contracaecum osculatum  (Nematoda: Anisakidae) in fish and seals in Bothnian Bay (Northeastern Baltic Sea).  International Journal for Parasitology 18: 365‑370.

VALTONEN, E. T. & HELLE, E. 1988. Host‑parasite relationships between two seal   populations and two species of Corynosoma (Acanthocephala) in Finland. Journal of Zoology 214: 361‑371.

VALTONEN, E. T., BRUMMER‑KORVENKONTIO, H. & RAHKONEN, R. 1988. A   survey of the parasites of coregonids from three water bodies in Finland. Finnish Fishe­ries Research 9: 313‑322.

GIBSON, D. I. & VALTONEN, E. T. 1988. A new species of Crepidostomum   (Allocreadiidae: Digenea) from north­eastern Finland, with comments on its possible origin. Systematic Pa­rasitology 12: 31‑40.

RINTAMÄKI, P. & VALTONEN, E. T. 1988. Seasonal and size‑bound infection of   Proteocephalus exiguus in four coregonid species in Northern Finland. Folia Parasitologi­ca 35: 317‑328.



ZDZITOWIECKI, K. & VALTONEN, E. T. 1987. Description of Echinorhynchus   bothniensis sp.n.(Acanthocephala), a pa­rasite of smelt, Osmerus eperlanus L., in Bothnian Bay. Acta Parasitologica Polonica 32: 233‑238.

PEURA, R., VALTONEN, E. T. & CROMPTON, D. W. T. 1987. Ovarian development   of Corynosoma semerme (Acanthocephala) during experimental infections in rats. Pa­rasitology 94: 123‑134.

RAHKONEN, R. & VALTONEN, E. T. 1987. Occurrence of Phyllodistomum umblae   (Fabricius, 1780) in the ureters of coregonids of Lake Yli‑Kitka in northeastern Finland. Folia Parasitologica 34: 145‑156.

BRGLEZ, J. & VALTONEN, E. T. 1987. Trematodes in some anseriform birds from the   Island of Hailuoto in the Bay of Bothnia (Finland). Veterinarski Arhiv 57: 177‑182.



RINTAMÄKI, P., VALTONEN, E. T. & FRERICHS, G. N. 1986. Occurrence of   Yersinia ruckeri infection in farmed whitefish, Coregonus peled Gmelin and Coregonus muksun Pallas, and Atlantic salmon, Salmo salar L., in Northern Finland. Journal of Fish Diseases 9: 137‑140. 

PEURA, R., VALTONEN, E. T. & CROMPTON, D. W. T. 1986. Ovarian tissue in   juvenile palaeacanthocephalans: Corynosoma semerme, C. strumosum and Echinorhynchus gadi. Parasitology 93: 471‑480.

BRGLEZ, J., VALTONEN, E. T. & MERILÄ, E. 1986. Hymenolepidid cestodes of   ducks from the island of Hai­luoto in the Bay of Bothnia. Sonderdruck aus Verhan­dlungsbericht des 28. Internationalen Symposiumn über die Erkrankungen der Zootiere. Rostock 1986: 123‑128.

VALTONEN, E. T., MERILÄ, E. & BRGLEZ, J. 1986. Studies on Hymenolepidid   cestodes in tufted duck Authya fuligula from the Hailuoto island in the Bay of Bothnia. Sonderdruck aus Verhandlungsbericht des 28. Internationalen Symposiums über die Er­krankungen der Zootiere. Rostock 1986: 119‑122.



BRGLEZ, J. & VALTONEN, E. T. 1985. Sesaci iz druzine Notocothylidae Lühe, 1909,   pri vodni perjadi z otoka Hailuoto, Finska (Trematodes from the family Notocotylidae Lühe, 1909, in waterfowl from the Hailuoto island, Finland). Zb. Biotehn. fak. Univ. E. Kardelja, Vet 22: 73‑78.



HYYTINEN, L. & VALTONEN, E. T. 1984. Fishing and fish breed­ing in the Koillismaa   region. Oulanka Reports 5: 41‑44.

VALTONEN, E. T., GIBSON, D. I. & KURTTILA, M. 1984. Trema­todes in Northern   Finland I: Species maturing in fish in the northeastern Bothnian Bay and in a local lake. Bothnian BayReports 3: 31‑44.

RAHKONEN, R., VALTONEN, E. T. & GIBSON, D. I. 1984. Trema­todes in Northern   Finland II: The occurrence of Bunodera luciopercae in three different water bodies. Bothnian Bay Reports 3: 55‑66.




VALTONEN, E. T., VAN MAREN, M. J. & TIMOLA, O. 1983. A note on the   intermediate hosts of Ec­hinorhyn­chus gadi Zoega, in Müller (Acanthocephala) in the Baltic Sea. Aquilo Series Zoologica 22: 93‑97.

VALTONEN, E. T. 1983. Relationships between Corynosoma se­merme and C. strumosum (Acanthocephala) and their pa­ratenic fish hosts in the Bothnian Bay, Baltic Sea. Acta Universitatis Ou­luensis A 155. Biologica 21: 1‑32.

VALTONEN, E. T. & NIINIMAA, A. 1983. Dispersion and frequen­cy distribution of Corynosoma spp. (Acanthocephala) in the fish of the Bothnian Bay. Aquilo Series Zoologi­ca 22: 1‑13.

GIBSON, D. I. & VALTONEN, E. T. 1983. Two interesting re­cords of tapeworms from   Finnish waters. Aquilo Series Zoologica 22: 45‑49.

VALTONEN, E. T. 1983. On the ecology of Echinorhynchus salmonis and two Corynosoma spe­cies (Acanthocephala) in the fish and seals of the nort­hern Gulf of Both­nia. Acta Universitatis Ouluensis 156. Biologica 22: 1‑49. Dr. the­sis.



FAGERHOLM, H.P., KUUSELA, K. & VALTONEN, E. T. 1982. On the occurrence   of Cystidicoloides ephemeridarum (Nematoda: Spiruroidea) in grayling (Thymallus thymal­lus L.) in the Oulanka‑ and Kitkajoki rivers (Kuusamo, Finland). Memoranda Societas Pro Fauna Fennica 58: 67‑70.

VALTONEN, E. T. & HELLE, E. 1982. Experimental infection of laboratory rats with   Corynosoma semerme (Acanthocephala). Parasitology 85: 9‑19.

PEURA. R., VALTONEN, E. T. & CROMPTON, D. W. T. 1982. The structure of the   mature oocyte and zygote of Corynosoma semerme (Acanthocephala). Parasitology 84: 475‑479.

VALTONEN, E. T., LINDSTRÖM, A. & LINDSTRÖM, M. 1982. Experi­mental infectionof  Pontoporeia affinis with two acan­thocephalan species. Tvärminne Studies 2: 22. Research  activities in 1980‑1981.



HELLE, E. & VALTONEN, E. T. 1981. Comparison between spring and autumn infection by  Corynosoma (Acanthocephala) in the ringed seal Pusa hispida in the Bothnian Bay of the  Baltic Sea. Parasitology 82: 287‑296.

VALTONEN, E. T. & KERÄNEN, A.‑L. 1981. Ichthyophthiriasis of Atlantic salmon,   Salmo salar L., at the Montta hatchery in northern Finland in 1978‑79. Journal of Fish Di­seases 4: 405‑411.



VALTONEN, E. T. 1980. Metechinorhynchus salmonis (Müller 1978) (Acanthocephala) as a parasite of the whitefish in the Bothnian Bay. I. Seasonal relationships between infection and fish size. Acta Parasitologica Polonica XXVII: 293‑300.

VALTONEN, E. T. 1980. Metechinorhynchus salmonis (Acanthoce­phala) as a parasite of   the whitefish in the Bothnian Bay. II. Sex ratio, body length and embryo development in relation to season and site in intestine. ‑ Acta Parasitologica Polonica XXVII: 301‑307.

VALTONEN, E. T. 1980. Metechinorhynchus salmonis infection and diet in the river‑­ spawning whitefish of the Bothnian Bay. Journal of Fish Biology 17: 1‑8.

BYLUND, G., VALTONEN, E. T. & NIEMELÄ, E. 1980. Observations on epidermal   papillomata in wild and cultured Atlantic salmon Salmo salar L. in Finland. Journal of Fish Diseases 3: 525‑528.

HELLE, E. & VALTONEN, E. T. 1980. On the occurrence of Corynosoma spp.  (Acantho­cephala) in ringed seals (Pusa hispida) in the Bothnian Bay, Finland. Canadian Journal of Zoolo­gy 58: 298‑303.

ITÄMIES, J., VALTONEN, E. T. & FAGERHOLM, H.‑P. 1980. Poly­morphus  minutus (Acanthocephala) infestation in eiders and its role as a possible cause of death.  Annales Zoologici Fennici 17: 285‑289.

FAGERHOLM, H.‑P. & VALTONEN, E. T. 1980. Metazoan parasites of migratory   whitefish (Coregonus lavaretus L.) from two areas in the northern Baltic region separated by a sali­nity gradient. Bothnian Bay Reports 2: 67‑73.

VALTONEN, E. T. & VALTONEN, T. 1980. Diet of the sea‑spawning whitefish,   Coregonus nasus (Pallas) sensu Svärdson, in the northern Bothnian Bay. Bothnian Bay Reports 2: 41‑47.

VALTONEN, E. T. & VALTONEN, T. 1980. Metazoan parasites of the sea‑spawning   whitefish Coregonus nasus (Pallas) sensu Svärdson in the Bothnian Bay. Bothnian Bay Re­ports 2: 17‑25.

VALTONEN, E. T. & VALTONEN, T. 1980. Comparison of Metechi­norhynchus salmonis  (Müller 1780) (Acanthocephala) in­fection in the sea‑spawning whitefish in the northeas­tern  and central Bothnian Bay. Bothnian Bay Reports 2: 61‑66.



VALTONEN, E. T. 1979. Neoechinorhynchus rutili (Müller, 1780) (Acanthocephala) in   the whitefish Coregonus nasus (Pal­las) sensu Svärdson from the Bay of Bothnia. Journal of Fish Diseases 2: 99‑103.



VALTONEN, E. T. & VALTONEN, T. 1978. Cystidicola farionis as a swimbladder   parasite of the whitefish in the Bothnian Bay. Journal of Fish Biology 13: 557‑561.

VALTONEN, E. T. & VALTONEN, T. 1978. Lee's phenomenon in sea‑spawning  whitefish populations in the Bothnian Bay. Aquilo Series Zoologica 18: 33‑38.




1. VALTONEN, E. T. 1979. Kalojen loisista Pohjois‑Suomessa. Oulun luonnonystäväin  yhdistys, Tiedotuksia 4: 1‑7.

2. VALTONEN, E. T. 1979. Tunnetko kalojen loiset. Kaleva no 142.

3. VALTONEN, E. T., MANNERMAA, A‑L. & VALTONEN, T. 1980. Valko­pilkkutauti  kalankasvattajien harmina. ‑ Suomen kalas­tuslehti (with English summary). s. 12‑14.

4. VALTONEN, E. T. 1983. Kalaloistutkimuksen juurilla. ‑ Oulun luonnonystäväin yhdistys  r.y. Tiedotuksia 8, no. 2: 13‑ 15.

5. FAGERHOLM, H.‑P. & VALTONEN, E. T. 1984. Väkäkärsämadot (Acanthocephala).  Suomen eläimet kirjassa. (ed. V. Huhta). p. 190‑ 193.

6. VALTONEN, E. T. 1984. Kalojen loisia: Haukimato (Triaenophorus). Kalamies no 11.

7. VALTONEN, E. T. 1984. Kalojen loisia: Siian väkäkärsämato (Echinorhynchus salmonis).  Kalamies no 12.

8. VALTONEN, E. T. 1985. Kalojen loisia: Lohikalojen uimarakkomato (Cystidicola farionis).   Kalamies no 1.

9. VALTONEN, E. T. 1985. Kalojen loisia: Leveä heisimato (ihmi­sen lapamato)  (Diphyllobothrium latum). Kalamies no 2. 

10. VALTONEN, E. T. 1985. Kalojen loisia: Lokkilapamato (Diphyllobothrum dendriticum).  Kalamies no 3.

11. VALTONEN, E. T. 1985. Kalojen loisia: Isot heisimadot. Kalamies no 4.

12. VALTONEN, E. T. 1985. Kalojen loisia: Loiskaihi sokeuttaa kalojamme. Kalamies no 5.

13. VALTONEN, E. T. 1985. Kalojen loisia: Siian rakkoloisio (Henneguya zschockey). Kalamies no6.

14. VALTONEN, E. T. 1985. Kalojen loisia: Kidusmadot (Monogenea). Kalamies no 7.

15. VALTONEN, E. T. 1985. Kalojen loisia: Äyriäisloiset. Kala­mies no 8.

16. VALTONEN, E. T. 1985. Kalojen loisia: Juotikkaat. Kalamies no 9.

17. VALTONEN, E. T. 1985. Kalojen loisia: Miksi kalojen loisia tutkitaan. Kalamies no 10.

18. VALTONEN, E. T. & MÄKINEN, T. 1986. Suomen kalanviljely vailla vakavia  kalatauteja ‑ kuinka kauan? Suomen kalan­kasvattaja 2: 12‑13.

19. VALTONEN, E. T. & SIPPONEN, M. 1986. Siian poikasten kasva­tus ja tautivaara.  Suomen Kalastuslehti 4: 174‑176.

20. VALTONEN, E. T. 1987. Luonnonkalat tautilähteenä. Suomen Kalankasvattaja 2: 11.

21. VALTONEN, E. T. & KOSKIVAARA, M. 1988. ERM‑tauti Keski‑Suomessa ‑ uhka  kirjolohen kasvatukselle lähivuosina? Suomen kalankasvattaja 2: 24‑25.

22. VALTONEN, E. T. 1992. Loisongelmat ja niiden torjunta kalanviljelyssä. 6 pp. RKTL  kalatutkimuksia - fiskundersökningar 42: 5-8.

23. VALTONEN, E. T. 1988. Kalojen lois- ja tautitutkimuksista Keski-Suomessa.  Kalantut­kimus- ja vilje­lyseminaari, m/s Ma­riella, 22.-24.11.1988. Abst­ract.

24. VALTONEN, E. T. 1989. Kalanviljelylaitoksen loisongelmat ‑ Parasitproblemen vid  fiskodlingar. Suomen Kalankasvat­taja 4: 13‑15.

25. VALTONEN, E. T. 1989. Loiset kalassa. Esite loisten merkityksestä lähinnä kalakaupan  kannalta katsottuna. Julkai­sija Kalatalouden keskusliitto.

26. VALTONEN, E. T. & NYKÄNEN, T. 1990. Kuuhankavesi ja Hankavesi on pelastettava.  Hankasalmen Sanomat no. 42.

27. VALTONEN, E. T. 1990. Kalojen oireet vaativat toimenpiteitä. Kalatalouden  kehittämispäivät 19.12.1990 Jyväs­kylä. Esitysten tiivistelmät 2 s.

28.  VALTONEN, E. T. 1993. Kalojen loistutkimukset ympäristövaikutustutkimuksissa. Ympäristö­muutosten vaikutukset kaloihin ja kalatalouteen. III. Kalantutkimuspäivät Lahdessa 28. - 29.10.1993.  Esitelmien ja postereiden abstraktit

29.  VALTONEN, E. T. 1993.Missä määrin loiset, taudit ja kasvaimet heikentävät kalan käyttöarvoa. Elintarvike ja terveys 3-4: 128-133.

30. VALTONEN, E.T. 1995. Luonto arvoonsa ja maaseutu kukoistamaan. Keski-Suomen Seutukunta 23.2. 1995.

31. VALTONEN,  E.T. &  VALKEAJÄRVI,  P. 1995. Siian loiset Konnevedessä 1970- ja 1990- luvuilla. RKTL, Kalatutkimuksia-Fiskundersökningar 

32. RAHKONEN, M., KERÄNEN, A-L., SUOMALAINEN, L-R., RINTAMÄKI-KINNUNEN, P., RAHKONEN, R., KOSKI P., KONTTINEN, E., JÄMSÄ K., LANKINEN Y., & VALTONEN E.T. 2002. Malakiittivihreän korvaavat aineet ja menetelmät valkopilkkutaudin torjunnassa. Suomen kalankasvattaja no. 3: 42-46.

33a. RINTAMÄKI-KINNUNEN, P.1, RAHKONEN, M.,2, MANNERMAA-KERÄNEN, A-L.,3 KOSKI, P.,4 ANTTILA, P.,1 KONTTINEN, E.,3 KANNEL, R.,3 HALTTUNEN, A.,5 HAUKKA, V-M.,5 LANKINEN, Y.,5 PARTANEN, M.,6 RAHIKKALA, V.,6 SALONEN, V.,7 & VALTONEN, E.T .,2 2003. Valkopilkkutaudin torjunta: kylvetyskokeet kesällä 2002. Suomen Kalankasvattaja  2/2003:36-41

33b RINTAMÄKI-KINNUNEN, P.1, RAHKONEN, M.,2, MANNERMAA-KERÄNEN, A-L.,3 KOSKI, P.,4 ANTTILA, P.,1 KONTTINEN, E.,3 KANNEL, R.,3 HALTTUNEN, A.,5 HAUKKA, V-M.,5 LANKINEN, Y.,5 PARTANEN, M.,6 RAHIKKALA, V.,6 SALONEN, V.,7 & VALTONEN, E.T .,2 2003. Hur man bekämpar vitapricksjukan: behandlingsförsök sommaren 2002. Fiskodlaren 2/2003: 42-45.

34. VALTONEN, E.T. 2003. Loiset kaloissa. Elintarvike ja terveys-lehti 2: 76-81.

35. RINTAMÄKI-KINNUNEN, P., RAHKONEN, M., MANNERMAA-KERÄNEN, A-L., ANTTILA, P., KONTTINEN, E., KANNEL, R., HALTTUNEN, A., HAUKKA, V-M., LANKINEN Y., PARTANEN, M., RAHIKKALA, V., SALONEN, M. & VALTONEN E.T. 2004. Valkopilkkutaudin torjunta; kylvetyskokeet kesällä 2002. in: Kalojen valkopilkkutaudin hoito, tuloksia malakiitin vaihtoehtojen testaustyöstä (K. Manninen, toim.) Kala ja Riistaraportteja nro. 321, pp. 25-59.

36. PULKKINEN, K., KARVONEN, A. & VALTONEN, E.T. 2004. Lapamato-harvinainen muttei hävinnyt. Duodecium 120 (15): 1912.

37. E.T.VALTONEN.2007. Loisinnan monimuotoisuus kaloissa ss. 32-37. Kirjassa Hannu Lehtonen (toim) Kalavesillä. 256ss. Weilin & Göös.