Browsing NINA Brage by Author "Mitamura, Hiromichi"

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European eel Anguilla anguilla compromise speed for safety in the early marine spawning migration

Lennox, Robert J.; Økland, Finn; Mitamura, Hiromichi; Cooke, Steven J.; Thorstad, Eva Bonsak (Journal article; Peer reviewed, 2018)

There are substantial benefits to potential fitness conferred to animals that undertake migrations. However, animals must make compromises to maximize survival and compensate for the risks associated with long-distance ...
In situ measurement of salinity during seaward migration of Atlantic salmon post‑smolts using acoustic transmitters with data‑storage capabilities and conventional acoustic transmitters

Mitamura, Hiromichi; Thorstad, Eva Bonsak; Uglem, Ingebrigt; Økland, Finn (Journal article; Peer reviewed, 2017)

Background: Development of miniature acoustic transmitters and data-storage tags has provided new insights into ecology of free-ranging aquatic animals. In this study, we used a data-storage-type and a conventional acoustic ...
Movements of female lumpsucker Cyclopterus lumpus in a Norwegian fjord during the spawning period

Mitamura, Hiromichi; Thorstad, Eva Bonsak; Uglem, Ingebrigt; Bjørn, Pål Arne; Økland, Finn; Næsje, Tor; Dempster, Tim; Arai, Nobuaki (NINA Rapport;288, Research report, 2007)

Mitamura, H., Uglem, I., Thorstad, E.B., Bjørn, P.A., Økland, F., Næsje, T.F., Dempster, T. & Arai, N. 2007. Movements of female lumpsucker Cyclopterus lumpus in a Norwegian fjord during the spawning period. - NINA Report ...