Published articles

Wootton, K. L., Blanchet, F. G., Liston, A., Nyman, T., Riggi, L., Kopelke, J.-P., Roslin, T. & Gravel, D. 2024. Layer-specific imprints of traits within a plant–herbivore–predator network – complementary insights from complementary methods. Ecography, in press.

Sromek, L., Ylinen, E., Kunnasranta, M., Maduna, S. N., Sinisalo, T., Michell, C. T., Kovacs, K. M., Lydersen, C., Ieshko, E., Andrievskaya, E., Alexeev, V., Leidenberger, S., Hagen, S. B. & Nyman, T. 2023. Loss of species and genetic diversity during colonization: insights from acanthocephalan parasites in northern European seals. Ecology and Evolution 13: e10608. [Pdf]

Koskinen, J., Abrego, N., Vesterinen, E., Roslin, T. & Nyman, T. 2023. Environmental responses of fruiting fungal communities are phylogenetically structured. Ecography 2023: e06333. [Pdf]

Liston, A., Vikberg, V., Mutanen, M., Nyman, T. & Prous, M. 2023. Palaearctic willow-catkin sawflies: a revision of the amentorum species group of Euura (Hymenoptera, Tenthredinidae). Zootaxa 5323: 349–395. [Pdf]

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 32: 1791–1809. [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 24: 155–165. [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]