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Ferskvannsgruppa kan mer enn bare fisk!

Vår professor Emeritus Anders Klemetsen har nylig publisert en spennende artikkel om rype og beiteadferd.

Anders er det som mange av oss anser som en "ekte biolog" - han kan det meste om det aller meste. Vi har ennå ikke funnet hull i hans kunnskapsdatabase. Her er nok et bevis på hans interesse, glede og vide kunnskap om biologi med en interessant artikkel om rype og vinterbeite 
Følg denne linken til WileyOnlineLibrary for å lese artikkelen! =)

How does the salmon lice parasite affect growth and other life history traits of the anadromous Arctic charr?

The transition from fresh- to saline water is a huge task for anadromous fishes and has ahigh energetic cost. If the fish manage this transition, they are rewarded with a very nutritious habitat in the fjord. On the other hand, they also have to cope with a new variety and amount of predators.

Other challenges they meet are new parasites. Some from the food they eat, and others from the environment. 
The salmon lice is a ectoparasite which can have a negative impact on its host in many aspects. The parasite attach to the fish and feed on skin, mucus and eventually blood. This can induce different responses from the fish; disease from open wounds, it cause a change in behaviour, and the fish might escape from the fjord and flee back to the river much earlier than "normal".

What is the result of these impact on the population level? Hopefully these girls will find out more!