Jenni Prokkola

@jmprok.bsky.social

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Salmon scientist and an angry optimist. Evolution & Physiology 🐟🌡️🧬 Senior scientist & Research Fellow @luke.fi. Lohitutkija. She/her.

Logos of the supporters and sponsors of the symposium Habitat restoration for diadromous fishes - best practices and impacts on stock assessment, held in Oulu, Finland from 30 June to 2 July, 2026. SAFIRE University of Oulu, Natural Resources Institute Finland (Luke), An international society for fish biology (FSBI), International Council for the exploration of the sea (ICES), Digital Waters, Society for Ecological Restoration, TRIWA Life, EMKVR, European Union.
Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.
Relative mRNA expression (log2RQ) level of appetite-related genes affected by density (a–c) and six6 (d) And a diagram summarising the implication of the studied genes in appetite regulation. Orexigenic (AGRP and NPY) and anorexigenic (POMC and CART) neurons in the arcuate nucleus of the hypothalamus detect the presence of hormones (insulin, leptin and ghrelin) in the bloodstream and induce an increase (orexigenic response) or a decrease (anorexigenic response) in food intake respectively.
Politiikkasuositukset otsikko ja kuva vaelluskaloista, ainakin harjuksesta ja lohista, turkoosinkirkkassa jokivedessä. Auringonvalo heijastuu kalojen suomuista ja pohjan kivistä.
A brochure of the symposium with salmon filmed under water on the cover and a small eel on the second page. The title of the sympisium is Habitat restoration for diadromous fishes – best practices and impacts on stock assessment. It will be organised in Oulu, Finland, 30 June - 2 July 2026. Please see details on the website.
Screenshot with title: Is thermal performance during heatwaves predicted by life history genotypes in salmon? And authors Lucy Cotgrove, Zara-Louise Cowan, Constance Oules, Evan Sala, Tutku Aykanat, Craig Primmer, Fredrik Jutfelt, Jenni Prokkola. Time of talk: 08 Jul 17:15
A goby fish, probably round goby, resting on top of a PVC pipe in an aquarium. Only the head and part of the back and pelvic fins are visible, and they are coloured different shades of light brown. The fish has a huge mouth relative to its head, and looks very cute. One dark brown eye with a golden ring around the iris is visible, and seems to be looking into camera.
A view from a cliff overlooking blue water, small rocky islands and blue sky. Small pine trees grow on the cliff that is smooth and grey.
A drawing of an adult salmon and text containing information on the position: Research on the influence of genetic variation in life-history loci (Vgll3, Six6, Omy05) on energetics in salmonids: how do fish allocate energy and does genetic variation shape energy use in a warming environment?
Oulanka river, frozen, with shades of trees and sunlight covering the snow, some rapids and trees on a steep river bank and blue sky
A picture of the thesis cover with an illustration of two salmon in orange, green and grey colours facing opposite directions.
Two anaesthetized Atlantic salmon, one migrating smolt with silver color, one parr, brown with red spots.