A RECORD OF PINK SALMON, ONCORHYNCHUS GORBUSCHA (ACTINOPTERYGII, SALMONIFORMES, SALMONIDAE), IN THE REVELVA RIVER, HORNSUND AREA (SW SPITSBERGEN)

In 2007-2008 the pink salmon, Oncorhynchus gorbuscha, was observed to attempt spawning migration up the Revelva River. The possibility of natural spawning of this alien species in rivers and lakes of Spitsbergen, as well as the risk of its natural hybridization with the native Arctic charr, Salvelinus alpinus, are discussed.