Showing items with similar title or keywords.

• Rehabilitation of two northern river lamprey (Lampetra fluviatilis) populations impacted by various anthropogenic pressures : lessons learnt in the past three decades 

  Aronsuu, Kimmo; Vikström, Risto; Marjomäki, Timo J.; Wennman, Kim; Pakkala, Jukka; Mäenpää, Eero; Tuohino, Jukka; Sarell, Juha; Ojutkangas, Esa (University of Jyväskylä, 2019)

  The pioneering work done during the past three decades in the regulated Rivers Perhonjoki and Kalajoki, Finland, to study and rehabilitate river lamprey populations is presented. The effects of various anthropogenic ...

• Migratory behaviour and holding habitats of adult river lampreys (Lampetra fluviatilis) in two Finnish rivers 

  Aronsuu, Kimmo; Marjomäki, Timo; Tuohino, Jukka; Wennman, Kim; Vikström, Risto; Ojutkangas, Esa (Boreal Environment Research Publishing Board, 2015)

  The effect of environmental factors on migratory activity of adult river lampreys entering the Kalajoki and Perhonjoki, rivers in Finland, for spawning was studied using correlation and regression analyses. Telemetric ...

• Lipid-related thiamine deficiency cause mortality of river lampreys (Lampetra fluviatilis) during pre-spawning fasting 

  Vuorinen, Pekka J.; Juntunen, Esa-Pekka; Iivari, Juha; Koski, Perttu; Nikonen, Soili; Rokka, Mervi; Ritvanen, Tiina; Pakkala, Jukka; Heinimaa, Petri; Keinänen, Marja (Elsevier BV, 2023)

  River lampreys (Lampetra fluviatilis) were caught in the fall 2014 on entering the River Perhonjoki for spawning and kept at a hatchery until spawning in late spring 2015 to produce larvae for compensatory stockings. Since ...

• Biological responses of midge (Chironomus riparius) and lamprey (Lampetra fluviatilis) larvae in ecotoxicity assessment of PCDD/F-, PCB- and Hg-contaminated river sediments 

  Salmelin, Johanna; Karjalainen, Anna; Hämäläinen, Heikki; Leppänen, M. T.; Kiviranta, H.; Kukkonen, Jussi; Vuori, K. M. (Springer, 2016)

  We evaluated the utility of chironomid and lamprey larval responses in ecotoxicity assessment of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/F)-, polychlorinated biphenyls (PCB)- and mercury (Hg)-contaminated ...

• The effect of water level changes on the density of newly hatched European whitefish (<i>Coregonus lavaretus</i> (L.)) larvae in unregulated and regulated lakes 

  Väänänen, Tuula; Marjomäki, Timo J.; Ranta, Tomi; Karjalainen, Juha (EDP Sciences, 2024)

  The effect of the water levels during the period from spawning to hatching of whitefish (Coregonus lavaretus (L.)) on the density of newly hatched larvae was examined from a 23-year time series. The density of larvae was ...