Browsing Luonnontieteiden, metsätieteiden ja tekniikan tiedekunta by Author "Hyvärinen, Pekka"
Now showing items 1-8 of 8
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Behavioural effects in juvenile brown trout in response to parental angling selection
Alioravainen, Nico; Hyvärinen, Pekka; Vainikka, Anssi (Canadian Science Publishing, 2020)Fishing that selectively captures and removes fish based on their behavioural decisions is predicted to induce evolution towards timid fish stocks. Thus, offspring behaviour should associate with parental vulnerability to ...Tieteelliset aikakauslehtiartikkelit
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Do Metabolic Traits, Vulnerability to Angling, or Capture Method Explain Boldness Variation in Eurasian Perch?
Väätäinen, Reetta; Huuskonen, Hannu; Hyvärinen, Pekka; Kekäläinen, Jukka; Kortet, Raine; Torrehas Arnedo, Marina; Vainikka, Anssi (University of Chicago Press, 2018)The pace-of-life syndrome (POLS) concept predicts that individuals with high baseline metabolic rates demonstrate high boldness, aggressiveness, and activity, especially in food acquisition, with associated relatively ...Tieteelliset aikakauslehtiartikkelit
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Early winter foraging success, swimming performance and morphology of juvenile landlocked Atlantic salmon reared under semi-wild and hatchery conditions
Hatanpää, Aurora; Huuskonen, Hannu; Kekäläinen, Jukka; Kortet, Raine; Hyvärinen, Pekka; Vitelletti, Maria Letizia; Piironen, Jorma (Canadian Science Publishing, 2020)Several Finnish populations of salmonids have been maintained exclusively by stocking hatchery-reared fish for several generations, and it is crucial to know whether domestication has affected fitness-related traits and ...Tieteelliset aikakauslehtiartikkelit
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Fishing-induced versus natural selection in different brown trout (Salmo trutta) strains
Vainikka, Anssi; Hyvärinen, Pekka; Tiainen, Joni Matias; Lemopoulos, Alexandre; Alioravainen, Nico; Prokkola, Jenni Maria; Elvidge, Chris K; Arlinghaus, Robert (Canadian Science Publishing, 2021)Wild, adfluvial brown trout (Salmo trutta) are iconic targets in recreational fisheries but also endangered in many native locations. We compared how fishing and natural selection affect the fitness-proxies of brown trout ...Tieteelliset aikakauslehtiartikkelit
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Postrelease exploration and diel activity of hatchery, wild, and hybrid strain brown trout in seminatural streams
Alioravainen, Nico; Prokkola, Jenni M; Lemopoulos, Alexandre; Härkönen, Laura; Hyvärinen, Pekka; Vainikka, Anssi (Canadian Science Publishing, 2020)Behaviour that is adaptive in captivity may be maladaptive in the wild and compromise postrelease survival of hatchery fish. The understanding of behavioural variation displayed immediately after release could help to ...Tieteelliset aikakauslehtiartikkelit
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Postrelease exploration and stress tolerance of landlocked and anadromous Atlantic salmon and their hybrids
Eronen, Aslak; Hyvärinen, Pekka; Janhunen, Matti; Kekäläinen, Jukka; Kortet, Raine (Wiley Periodicals LLC on behalf of Society for Conservation Biology, 2023)Threatened fish populations worldwide are relying on stock supplementation by hatchery-reared fish. Although stocking with non-native fish may lead to hybridization, thereby disrupting local adaptations, it could also ...
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Sperm motility and offspring pre- and post-hatching survival in hybridization crosses among a landlocked and two anadromous Atlantic salmon populations: implications for conservation
Eronen, Aslak Tiuna; Kekäläinen, Jukka; Piironen, Jorma; Hyvärinen, Pekka; Huuskonen, Hannu; Janhunen, Matti; Yaripour, Sareh; Kortet, Raine (Canadian Science Publishing, 2020)The landlocked salmon (Salmo salar m. sebago) endemic to Lake Saimaa, Finland, is critically endangered and severely threatened by low genetic diversity and inbreeding. To explore the possibility of increasing the genetic ...Tieteelliset aikakauslehtiartikkelit
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Survival of crossbred brown trout under experimental pike predation and stocking in the wild
Alioravainen, Nico; Hyvärinen, Pekka; Kortet, Raine; Härkönen, Laura; Vainikka, Anssi (Finnish Environment Institute, 2018)Unintended domestication in hatchery broodstocks reflects a low success of supportive stocking programs. We crossbred adfluvial hatchery-stock brown trout (Salmo trutta) females with males from two non-native adfluvial ...Tieteelliset aikakauslehtiartikkelit