Browsing NIBIO Brage by Author "Nyman, Tommi"
Now showing items 1-17 of 17
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Adipose gene expression profiles reveal insights into the adaptation of northern Eurasian semi-domestic reindeer (Rangifer tarandus)
Weldenegodguad, Melak; Pokharel, Kisun; Niiranen, Laura; Soppela, Päivi; Ammosov, Innokentyi; Honkatukia, Mervi; Lindeberg, Heli; Peippo, Jaana; Reilas, Tiina; Mazzullo, Nuccio; Mäkelä, Kari A.; Nyman, Tommi; Tervahauta, Arja; Herzig, Karl-Heinz; Stammler, Florian; Kantanen, Juha (Peer reviewed; Journal article, 2021-10-07)Reindeer (Rangifer tarandus) are semi-domesticated animals adapted to the challenging conditions of northern Eurasia. Adipose tissues play a crucial role in northern animals by altering gene expression in their tissues to ... -
A curated DNA barcode reference library for parasitoids of northern European cyclically outbreaking geometrid moths
Nyman, Tommi; Wutke, Saskia; Koivisto, Elina; Klemola, Tero; Shaw, Mark R.; Andersson, Tommi; Haraldseide, Håkon; Hagen, Snorre; Nakadai, Ryosuke; Ruohomäki, Kai (Peer reviewed; Journal article, 2022-11-18)Large areas of forests are annually damaged or destroyed by outbreaking insect pests. Understanding the factors that trigger and terminate such population eruptions has become crucially important, as plants, plant-feeding ... -
DNA barcoding reveals different cestode helminth species in northern European marine and freshwater ringed seals
Nyman, Tommi; Papadopoulou, Elena; Ylinen, Eeva; Wutke, Saskia; Michell, Craig T.; Sromek, Ludmila; Sinisalo, Tuula; Andrievskaya, Elena; Alexeev, Vyacheslav; Kunnasranta, Mervi (Peer reviewed; Journal article, 2021-07-01)Three subspecies of the ringed seal (Pusa hispida) are found in northeastern Europe: P. h. botnica in the Baltic Sea, P. h saimensis in Lake Saimaa in Finland, and P. h. ladogensis in Lake Ladoga in Russia. We investigated ... -
Environmental responses of fruiting fungal communities are phylogenetically structured
Koskinen, Janne; Abrego, Nerea; Vesterinen, Eero; Roslin, Tomas; Nyman, Tommi (Peer reviewed, Journal article, 2023-07-25)Through their ephemeral reproductive structures (fruiting bodies), ectomycorrhizal forest soil fungi provide a resource for a plethora of organisms. Thus, resolving what biotic and abiotic factors determine the occurrence ... -
Fundamental resource specialization of herbivorous butterflies decreases towards lower latitudes
Nakadai, Ryosuke; Nyman, Tommi; Hashimoto, Koya; Iwasaki, Takaya; Valtonen, Anu (Peer reviewed; Journal article, 2021-08-17)Aim It is generally assumed that the degree of resource specialization in herbivorous insects increases towards lower latitudes. However, latitudinal patterns in herbivore diet breadth at large spatial scales remain poorly ... -
Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system
Klutsch, Cornelya; Maduna, Simo; Polikarpova, Natalia; Forfang, Kristin; Aspholm, Paul Eric; Nyman, Tommi; Eiken, Hans Geir; Amundsen, Per-Arne; Hagen, Snorre (Journal article; Peer reviewed, 2019-04-29)Habitat discontinuity, anthropogenic disturbance, and overharvesting have led to population fragmentation and decline worldwide. Preservation of remaining natural genetic diversity is crucial to avoid continued genetic ... -
Genome- and transcriptome-derived microsatellite loci in lumpfish Cyclopterus lumpus: Molecular tools for aquaculture, conservation and fisheries management
Maduna, Simo; Vivian-Smith, Adam; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Klutsch, Cornelya; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2020-01-17)The lumpfish Cyclopterus lumpus is commercially exploited in numerous areas of its range in the North Atlantic Ocean, and is important in salmonid aquaculture as a biological agent for controlling sea lice. Despite the ... -
Genomes of the willow-galling sawflies Euura lappo and Eupontania aestiva (Hymenoptera: Tenthredinidae): a resource for research on ecological speciation, adaptation, and gall induction
Michell, Craig; Wutke, Saskia; Aranda, Manuel; Nyman, Tommi (Peer reviewed; Journal article, 2021-03-31)Hymenoptera is a hyperdiverse insect order represented by over 153,000 different species. As many hymenopteran species perform various crucial roles for our environments, such as pollination, herbivory, and parasitism, ... -
Genomic evidence uncovers inbreeding and supports translocations in rescuing the genetic diversity of a landlocked seal population
Sundell, Tarja; Kammonen, Juhana I.; Mustanoja, Ella; Biard, Vincent; Kunnasranta, Mervi; Niemi, Marja; Nykänen, Milaja; Nyman, Tommi; Palo, Jukka U.; Valtonen, Mia; Paulin, Lars; Jernvall, Jukka; Auvinen, Petri (Peer reviewed; Journal article, 2023-01-07)Fragmentation of isolated populations increases the risk of inbreeding and loss of genetic diversity. The endemic Saimaa ringed seal (Pusa hispida saimensis) is one of the most endangered pinnipeds in the world with a ... -
High levels of inbreeding with spatial and host-associated structure in lice of an endangered freshwater seal
Herrera, Stephany Virrueta; Johnson, Kevin P.; Sweet, Andrew D.; Ylinen, Eeva; Kunnasranta, Mervi; Nyman, Tommi (Peer reviewed; Journal article, 2022-06-21)Host-specialist parasites of endangered large vertebrates are in many cases more endangered than their hosts. In particular, low host population densities and reduced among-host transmission rates are expected to lead to ... -
Imprints of latitude, host taxon, and decay stage on fungus-associated arthropod communities
Koskinen, Janne S.; Abrego, Nerea; Vesterinen, Eero J.; Schulz, Torsti; Roslin, Tomas; Nyman, Tommi (Peer reviewed; Journal article, 2022-03-09)Interactions among fungi and insects involve hundreds of thousands of species. While insect communities on plants have formed some of the classic model systems in ecology, fungus-based communities and the forces structuring ... -
Loss of species and genetic diversity during colonization: Insights from acanthocephalan parasites in northern European seals
Sromek, Ludmila; Ylinen, Eeva; Kunnasranta, Mervi; Maduna, Simo; Sinisalo, Tuula; Michell, Craig T.; Kovacs, Kit M.; Lydersen, Christian; Ieshko, Evgeny; Andrievskaya, Elena; Alexeev, Vyacheslav; Leidenberger, Sonja; Hagen, Snorre; Nyman, Tommi (Peer reviewed; Journal article, 2023-10-19)Studies on host–parasite systems that have experienced distributional shifts, range fragmentation, and population declines in the past can provide information regarding how parasite community richness and genetic diversity ... -
Mitogenomics of the suborder Cottoidei (Teleostei: Perciformes): Improved assemblies, mitogenome features, phylogeny, and ecological implications
Maduna, Simo; Vivian-Smith, Adam; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Klutsch, Cornelya; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2022-03-02)We determined the mitogenome of Cyclopterus lumpus using a hybrid sequencing approach, and another four closely related species in the Liparidae based on available next-generation sequence data. We found that the mitogenome ... -
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections
Heino, Matti T.; Nyman, Tommi; Palo, Jukka U.; Harmoinen, Jenni; Valtonen, Mia; Pilot, Małgorzata; Översti, Sanni; Salmela, Elina; Kunnasranta, Mervi; Väinölä, Risto; Hoelzel, A. Rus; Aspi, Jouni (Peer reviewed; Journal article, 2023-01-18)The Saimaa ringed seal (Pusa hispida saimensis) is endemic to Lake Saimaa in Finland. The subspecies is thought to have originated when parts of the ringed seal population of the Baltic region were trapped in lakes emerging ... -
Patterns of Microbiome Variation Among Infrapopulations of Permanent Bloodsucking Parasites
Doña, Jorge; Herrera, Stephany Virrueta; Nyman, Tommi; Kunnasranta, Mervi; Johnson, Kevin P. (Peer reviewed; Journal article, 2021-04-16)While interspecific variation in microbiome composition can often be readily explained by factors such as host species identity, there is still limited knowledge of how microbiomes vary at scales lower than the species ... -
Sea ice reduction drives genetic differentiation among Barents Sea polar bears
Maduna, Simo; Aars, Jon; Fløystad, Ida; Klutsch, Cornelya; Fiskebeck, Eve Marie Louise Zeyl; Wiig, Øystein; Ehrich, Dorothee; Andersen, Magnus; Bachmann, Lutz; Derocher, Andrew E.; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Peer reviewed; Journal article, 2021-09-08)Loss of Arctic sea ice owing to climate change is predicted to reduce both genetic diversity and gene flow in ice-dependent species, with potentially negative consequences for their long-term viability. Here, we tested for ... -
Sealed in a lake — Biology and conservation of the endangered Saimaa ringed seal: A review
Kunnasranta, Mervi; Niemi, Marja; Auttila, Miina; Valtonen, Mia; Kammonen, Juhana; Nyman, Tommi (Peer reviewed; Journal article, 2020-12-16)Wildlife species living in proximity with humans often suffer from various anthropogenic factors. Here, we focus on the endangered Saimaa ringed seal (Pusa hispida saimensis), which lives in close connection with humans ...