Published articles

Michell, C. T., Wagner, N., Mutanen, M., Lee, K. M. & Nyman, T. 2023. Genomic evidence for contrasting patterns of host-associated genetic differentiation across shared host-plant species in leaf- and bud-galling sawflies. Molecular Ecology, in press [Pdf].

Heino, M. T., Nyman, T., Palo, J. U., Harmoinen, J., Valtonen, M., Pilot, M., Översti, S., Salmela, E., Kunnasranta, M., Väinölä, R., Hoelzel, A. R. & Aspi, J. 2023. Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections. Ecology and Evolution 13: e9720. [Pdf]

Sundell, T., Kammonen, J. I., Mustanoja, E., Biard, V., Kunnasranta, M., Niemi, M., Nykänen, M., Nyman, T., Palo, J. U., Valtonen, M., Paulin, L., Jernvall, J. & Auvinen, P. 2023. Genomic evidence uncovers inbreeding and supports translocations in rescuing the genetic diversity of a landlocked seal population. Conservation Genetics, in press. [Pdf]

Nyman, T., Wutke, S., Koivisto, E., Klemola, T., Shaw, M. R., Andersson, T., Haraldseide, H., Hagen, S. B., Nakadai, R. & Ruohomäki, K. 2022. A curated DNA barcode reference library for parasitoids of northern European cyclically outbreaking geometrid moths. Ecology and Evolution 12: e9525. [Pdf]

Virrueta Herrera, S., Johnson, K. P., Sweet, A. D., Ylinen, E., Kunnasranta, M. & Nyman, T. 2022. High levels of inbreeding with spatial and host-associated structure in lice of an endangered freshwater seal. Molecular Ecology 31: 4593–4606. [Pdf]

Koskinen, J. S., Abrego, N., Vesterinen, E. J., Schulz, T., Roslin, T. & Nyman, T. 2022. Imprints of latitude, host taxon and decay stage on fungus-associated arthropod communities. Ecological Monographs 92: e1516. [Pdf]

Maduna, S. N., Vivian-Smith, A., Jónsdóttir, Ó. D. B., Imsland, A. K. D., Klütsch, C. F. C., Nyman, T., Eiken, H. G., Hagen, S. B. 2022. Mitogenomics of the suborder Cottoidei (Teleostei: Perciformes): improved assemblies, mitogenome features, phylogeny, and ecological implications. Genomics 114: e110297. [Pdf]

Weldenegodguad, M., Pokharel, K., Niiranen, L., Soppela, P., Ammosov, I., Honkatukia, M., Lindeberg, H., Peippo, J., Reilas, T., Mazzullo, N., Mäkelä, K. A., Nyman, T., Tervahauta, A., Herzig, K.-H., Stammler, F. & Kantanen, J. 2021. Adipose gene expression profiles reveal novel insights into the adaptation of northern Eurasian semi-domestic reindeer (Rangifer tarandus). Communications Biology 4: e1170. [Pdf]

Maduna, S. N., Aars, J., Fløystad, I., Klütsch, C. F. C., Zeyl Fiskebeck, E. M. L., Wiig, Ø., Ehrich, D., Andersen, M., Bachmann, L., Derocher, A. E., Nyman, T., Eiken, H. H. & Hagen, S. B. 2021. Sea ice reduction drives genetic differentiation among Barents Sea polar bears. Proceedings of the Royal Society B: Biological Sciences 288: e20211741. [Pdf]

Fraija-Fernández, N., Waeschenbach, A., Briscoe, A. G., Hocking, S., Kuchta, R., Nyman, T. & Littlewood, T. J. 2021. Evolutionary transitions in broad tapeworms (Cestoda: Diphyllobothriidea) revealed by mitogenome and nuclear ribosomal operon phylogenetics. Molecular Phylogenetics and Evolution 163: e107262. [Pdf]

Nakadai, R., Nyman, T., Hashimoto, K., Iwasaki, T. & Valtonen, A. 2021. Fundamental resource specialization of herbivorous butterflies decreases toward lower latitudes. Journal of Biogeography 48: 2524–2537. [Pdf]

Nyman, T., Papadopoulou, E., Ylinen, E., Wutke, S., Michell, C. T., Sromek, L., Sinisalo, T., Andrievskaya, E., Alexeev, V. & Kunnasranta, M. 2021. DNA barcoding reveals different cestode helminth species in northern European marine and freshwater ringed seals. International Journal for Parasitology: Parasites and Wildlife 15: 255–261. [Pdf]

Doña, J., Virrueta Herrera, S., Nyman, T., Kunnasranta, M. & Johnson, K. P. 2021. Patterns of microbiome variation among infrapopulations of permanent bloodsucking parasites. Frontiers in Microbiology 12: e642543. [Pdf]

Michell, C., Wutke, S., Aranda, M. & Nyman, T. 2021. Genomes of the willow-galling sawflies Euura lappo and Eupontania aestiva (Hymenoptera: Tenthredinidae): a resource for research on ecological speciation, adaptation, and gall induction. G3: Genes, Genomes, Genetics 11: jkab094. [Pdf]

Michell, C. T. & Nyman, T. 2021. Microbiomes of willow-galling sawflies: effects of host plant, gall type, and phylogeny on community structure and function. Genome 64: 615–626. [Pdf]

Thitz, P., Hagerman, A. E., Randriamanana, T., Virjamo, V., Kosonen, M., Lännenpää, M., Nyman, T., Mehtätalo, L., Kontunen-Soppela, S. & Julkunen-Tiitto. R. 2021. Genetic modification of the flavonoid pathway alters growth and reveals flexible responses to enhanced UVB – role of foliar condensed tannins. Plant–Environment Interactions 2: 1–15. [Pdf]

Kunnasranta, M., Niemi, M., Auttila, M., Valtonen, M., Kammonen, J. & Nyman, T. 2021. Sealed in a lake – biology and conservation of the endangered Saimaa ringed seal: A review. Biological Conservation 253: e108908. [Pdf]

Peart, C. R., Tusso, S., Pophaly, S. D., Botero-Castro, F., Wu, C.-C., Aurioles, D., Baird, A., Bickham, J., Forcada, J., Gelatt, T. S., Galimberti, F., Gemmell, N., Hoffman, J. I., Kovacs, K. M., Kunnasranta, M., Lydersen, C., Nyman, T., Oliviera, L. R., Orr, A. J., Sanvito, S., Trillmich, F., Valtonen, V., Shafer, A. B. A. & Wolf, J. B. W. 2020. Determinants of genetic variation across eco-evolutionary scales in pinnipeds. Nature Ecology & Evolution 4: 1095–1104. [Abstract]

Maduna, S. N., Vivian-Smith, A., Jónsdóttir, Ó. D. B., Imsland, A. K. D., Klütsch, C. F. C., Nyman, T., Eiken, H. G. & Hagen, S. B. 2020. Genome- and transcriptome-derived microsatellite loci in lumpfish Cyclopterus lumpus: molecular tools for aquaculture, conservation and fisheries management. Scientific Reports 10: e559. [Pdf]

Thitz, P., Mehtätalo, L., Välimäki, P., Randriamanana, T., Lännenpää, M., Hagerman, A. E., Andersson, T., Julkunen-Tiitto, R. & Nyman, T. 2020. Phytochemical shift from condensed tannins to flavonoids in transgenic Betula pendula decreases consumption and growth but improves growth efficiency of Epirrita autumnata larvae. Journal of Chemical Ecology 46: 217–231. [Pdf]

Nyman, T., Onstein, R. E., Silvestro, D., Wutke, S., Taeger, A., Wahlberg, N., Blank, S. M. & Malm, T. 2019. Early wasp plucks the flower: disparate extant diversity of sawfly superfamilies (Hymenoptera: 'Symphyta') may reflect asynchronous switching to angiosperm hosts. Biological Journal of the Linnean Society 128: 1–19. [Pdf]

Klütsch, C. F. C., Maduna, S. N., Polikarpova, N., Forfang, K., Aspholm, P. E., Nyman, T., Eiken, H. G., Amundsen, P. A. & Hagen, S. B. 2019. Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system. Ecology and Evolution 9: 6068–6081. [Pdf]

Suhonen, J., Ilvonen, J. J., Nyman, T. & Sorvari, J. 2019. Brood parasitism in eusocial insects (Hymenoptera): role of host geographic range size and phylogeny. Phil. Trans. R. Soc. B: Biol. Sci. 374: e20180203. [Pdf]

Koskinen, J., Roslin, T., Nyman, T., Abrego, N., Michell, C. & Vesterinen, E. J. 2019. Finding flies in the mushroom soup: host specificity of fungus-associated communities revisited with a novel molecular method. Molecular Ecology 28: 190–202. [Abstract]

Gravel, D., Baiser, B., Dunne, J. A., Kopelke, J.-P., Martinez, N., Nyman, T., Poisot, T., Stouffer, D., Tylianakis, J. M., Wood, S. & Roslin, T. 2019. Bringing Elton and Grinnell together: a quantitative framework to represent the biogeography of ecological interaction networks. Ecography 41: 1–15. [Abstract]

Du, S., Niu, G., Nyman, T. & Wei, M. 2018. Characterization of the mitochondrial genome of Arge bella Wei & Du sp. nov. (Hymenoptera: Argidae). PeerJ 6: e6131. [Pdf]

Boevé, J.-L., Nyman, T., Shinohara, A. & Schmidt, S. 2018. Endogenous toxins and the coupling of gregariousness to conspicuousness in Argidae and Pergidae sawflies. Scientific Reports 8: e17636. [Pdf]

Nylin, S., Agosta, S., Bensch, S., Boeger, W. A., Braga, M. P., Brooks, D. R., Forister, M. L., Hambäck, P. A., Hoberg, E. P., Nyman, T., Schäpers, A., Stigall, A. L., Wheat, C. W., Österling, M. & Janz, N. 2018. Embracing colonizations: a new paradigm for species association dynamics. Trends in Ecology & Evolution 33: 4–14. [Abstract]

Kopelke, J.-P., Nyman, T., Cazelles, K., Gravel, D., Vissault, S. & Roslin, T. 2017. Food-web structure of willow-galling sawflies and their natural enemies across Europe. Ecology 98: 1730. [Pdf] [Supporting Information]

Liston, A. D., Heibo, E., Prous, M., Vårdal, H., Nyman, T. & Vikberg, V. 2017. North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae). Zootaxa 4032: 1–115. [Pdf]

Schmidt, S., Taeger, A., Morinière, J., Liston, A., Blank, S. M., Kramp, K., Kraus, M., Schmidt, O., Heibo, E., Prous, M., Nyman, T., Malm, T. & Stahlhut, J. 2017. Identification of sawflies and horntails (Hymenoptera, ‘Symphyta’) through DNA barcodes: successes and caveats. Molecular Ecology Resources 17: 670–685. [Pdf]

Nyman, T., Leppänen, S. A., Várkonyi, G., Shaw, M. R., Koivisto, R., Barstad, T. E., Vikberg, V. & Roininen, H. 2015. Determinants of parasitoid communities of willow-galling sawflies: habitat overrides physiology, host plant and space. Molecular Ecology 24: 5059–5074. [Abstract]

Wu, J., Nyman, T., Wang, D.-C., Argus, G. W., Yang, Y.-P. & Chen, J.-H. 2015. Phylogeny of Salix subgenus Salix s.l. (Salicaceae): delimitation, biogeography, and reticulate evolution. BMC Evolutionary Biology 15: e31. [Pdf]

Malm, T. & Nyman, T. 2015. Phylogeny of the symphytan grade of Hymenoptera: new pieces into the old jigsaw(fly) puzzle. Cladistics 31: 1–17. [Abstract]

Valtonen, M., Heino, M., Aspi, J., Buuri, H., Kokkonen, T., Kunnasranta, M. & Nyman, T. 2015. Genetic monitoring of a critically- endangered seal population based on field-collected placentas. Annales Zoologici Fennici 52: 51–65. [Pdf] [Featured on the Scientific American website 17.5.2015]

Leppänen, S. A., Malm, T., Värri, K. & Nyman, T. 2014. A comparative analysis of genetic differentiation across six shared willow host species in leaf- and bud-galling sawflies. PLoS ONE 9: e116286. [Pdf]

Nyman, T., Valtonen, M., Aspi, J., Ruokonen, M., Kunnasranta, M. & Palo, J. U. 2014. Demographic histories and genetic diversities of Fennoscandian marine and landlocked ringed seal subspecies. Ecology and Evolution 4: 3420–3434. [Pdf]

Valtonen, M., Palo, J. U., Aspi, J., Ruokonen, M., Kunnasranta, M. & Nyman, T. 2014. Causes and consequences of fine-scale population structure in a critically endangered freshwater seal. BMC Ecology 14: e22. [Pdf] [Article and project featured on ScienceDaily 24.10.2014]

Prous, M., Blank, S. M., Goulet, H., Heibo, E., Liston, A., Malm, T., Nyman, T., Schmidt, S., Smith, D. R., Vårdal, H., Viitasaari, M., Vikberg, V. & Taeger, A. 2014. The genera of Nematinae (Hymenoptera, Tenthredinidae). Journal of Hymenoptera Research, 40: 1–69. [Pdf]

Boevé, J.-L., Blank, S. M., Meijer, G. & Nyman, T. 2013. Invertebrate and avian predators as drivers of chemical defensive strategies in tenthredinid sawflies. BMC Evolutionary Biology 13: e198. [Pdf]

Heimonen, K., Lwanga, J. S., Mutanen, M., Nyman, T. & Roininen, H. 2013. Spatial and temporal variation in community composition of herbivorous insects on Neoboutonia macrocalyx in a primary tropical rain forest. Journal of Tropical Ecology 29: 229–241. [Abstract]

Leppänen, S. A., Altenhofer, E., Liston, A. D. & Nyman, T. 2013. Ecological versus phylogenetic determinants of trophic associations in a plant–leafminer–parasitoid food web. Evolution 67: 1493–1502. [Abstract]

Caron, V., Norgate, M., Ede, F. J., Nyman, T. & Sunnucks, P. 2013. Novel microsatellite DNA markers indicate strict parthenogenesis and few genotypes in the invasive willow sawfly Nematus oligospilus. Bulletin of Entomological Research 103: 74–81. [Abstract]

Valtonen, M., Palo, J. U., Ruokonen, M., Kunnasranta, M. & Nyman, T. 2012. Spatial and temporal variation in genetic diversity of an endangered freshwater seal. Conservation Genetics 13: 1231–1245. [Abstract]

Nyman, T., Linder, H. P., Peña, C., Malm, T. & Wahlberg, N. 2012. Climate-driven diversity dynamics in plants and plant-feeding insects. Ecology Letters 15: 889–898. [Abstract]

Leppänen, S. A., Altenhofer, E., Liston, A. D. & Nyman, T. 2012. Phylogenetics and evolution of host-plant use in leaf-mining sawflies (Hymenoptera: Tenthredinidae: Heterarthrinae). Molecular Phylogenetics and Evolution 64: 331–341. [Abstract]

Kaila, L., Mutanen, M. & Nyman, T. 2011. Phylogeny of the mega-diverse Gelechioidea (Lepidoptera): adaptations and determinants of success. Molecular Phylogenetics and Evolution 63: 801–809. [Abstract]

Nyman, T., Paajanen, R., Heiska, S. & Julkunen-Tiitto, R. 2011. Preference–performance relationship in the gall midge Rabdophaga rosaria: insights from a common-garden experiment with nine willow clones. Ecological Entomology 36: 200–211. [Abstract]

Nyman, T., Vikberg, V., Smith, D. R. & Boevé, J.-L. 2010. How common is ecological speciation in plant-feeding insects? A 'Higher' Nematinae perspective. BMC Evolutionary Biology 10: e266. [Pdf] [See related interview on Nature News 2.3.2011] [Article received BioMed Central's Open Data Award 6.5.2011]

Nyman, T. 2010. To speciate, or not to speciate? Resource heterogeneity, the subjectivity of similarity, and the macroevolutionary consequences of niche-width shifts in plant-feeding insects. Biological Reviews 85: 393–411. [Pdf]

Liston, A. D., Nyman, T. & Kehl, A. 2007. The first report of gall induction in the sawfly subfamily Allantinae (Hymenoptera: Tenthredinidae). Entomologica Fennica 18: 199–205. [Pdf] [Fig. 1 in colour]

Nyman, T., Bokma, F. & Kopelke, J.-P. 2007. Reciprocal diversification in a complex plant–herbivore–parasitoid food web. BMC Biology 5: e49. [Pdf] [Featured on ScienceDaily 3.11.2007] [Featured on the EU's European Research Headlines 16.11.2007]

Nyman, T., Farrell, B. D., Zinovjev, A. G. & Vikberg, V. 2006. Larval habits, host-plant associations, and speciation in nematine sawflies (Hymenoptera: Tenthredinidae). Evolution 60: 1622–1637. [Pdf] [Electronic Appendix] [Fig. 2 in colour]

Nyman, T., Zinovjev, A. G., Vikberg, V. & Farrell, B. D. 2006. Molecular phylogeny of the sawfly subfamily Nematinae (Hymenoptera: Tenthredinidae). Systematic Entomology 31: 569–583. [Pdf] [Electronic Appendix]

Roller, L., Beneš, K., Blank, S. M., Holuša, J., Jansen, E., Jänicke, M., Kaluza, S., Kehl, A., Kehr, I., Kraus, M., Liston, A. D., Nyman, T., Nie, H., Savina, H., Taeger, A. & Wei, M. 2006. Contribution to the knowledge of sawfly fauna (Hymenoptera, Symphyta) of the Low Tatras National park in Central Slovakia. Naturae Tutela 10: 57–72. [Pdf]

Nyman, T. & Julkunen-Tiitto, R. 2005. Chemical variation within and among six northern willow species. Phytochemistry 66: 2836–2843. [Pdf]

Roininen, H., Nyman, T. & Zinovjev, A. G. 2005. Biology, ecology, and evolution of gall-inducing sawflies (Hymenoptera: Tenthredinidae and Xyelidae). Pp. 467–494 in Raman, A., Schaefer, C. W., and Withers, T. M., eds. Biology, Ecology, and Evolution of Gall-inducing Arthropods. Science Publishers, Inc., Enfield, NH.

Nyman, T., Ylioja, T. & Roininen, H. 2002. Host-associated allozyme variation in tree cambium miners, Phytobia spp. (Diptera: Agromyzidae). Heredity 89: 394–400. [Pdf]

Nyman, T. 2002. The willow bud galler Euura mucronata Hartig (Hymenoptera: Tenthredinidae): one polyphage or many monophages? Heredity 88: 288–295. [Pdf]

Nyman, T., Widmer, A. & Roininen, H. 2000. Evolution of gall morphology and host-plant relationships in willow-feeding sawflies (Hymenoptera: Tenthredinidae). Evolution 54: 526–533. [Pdf] [Fig. 2 in colour]

Nyman, T. & Julkunen-Tiitto, R. 2000. Manipulation of the phenolic chemistry of willows by gall-inducing sawflies. Proc. Natl. Acad. Sci. USA 97: 13184–13187. [Pdf] [Electronic Appendix]

Nyman, T., Roininen, H. & Vuorinen, J. A. 1998. Evolution of different gall types in willow-feeding sawflies (Hymenoptera: Tenthredinidae). Evolution 52: 465–474. [Pdf]

PhD Thesis

Nyman, T. 2000. Phylogeny and ecological evolution of gall-inducing sawflies (Hymenoptera: Tenthredinidae). University of Joensuu, PhD Dissertations in Biology 6: 1–92. [Pdf of summary part]