Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic

Proceedings of the International Symposium on Arctic charr held in Winnipeg, 4-8 May 1981, on the campus of the University of Manitoba.

At the end of the first international Symposium on Rotifers diately accepted to do this, and kindly made an entire in Lunz, Austria, September 1976, entousiasti