UEF Joensuu
Molecular Ecology Group


Published articles

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]