Genetic assessment of spatiotemporal evolutionary relationships and stocking effects in grayling (Thymallus thymallus, Salmonidae)

Domestically reared introduced (or escaped) individuals can have detrimental genetic effects on the indigenous populations into which they are released. Consequently, numerous studies have attempted to estimate whether non-native specimens have contributed to the gene pool of wild populations. So far, the key limiting factor of such studies has been their lack of appropriate baseline genetic material. Here, microsatellite DNA analyses of historical scale samples and contemporary wild and introduced populations were used to assess spatiotemporal population structure and stocking effects among endangered Lake Saimaa (eastern Finland) grayling (Thymallus thymallus, Salmonidae). Significant dec…

Harjuskannan tila ja luonnonvaraisen lisääntymisen mahdollisuudet Kokemäenjoessa

Harjusistukkaiden luonnonravintolammikkoviljelyn kehittäminen : yhteenveto tutkimuksista vuosilta 1997-99 = Development of the culture of grayling stockings in fish ponds Summary of studies in 1997-1999