Browsing NIBIO Brage by Author "Kunnasranta, Mervi"
Now showing items 1-7 of 7
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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 ... -
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 ... -
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 ... -
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 ... -
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 ...