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Fig. 1


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Location of the Virgulica creek (red cross) in Latvia and approximate locations of non-hatchery samples from Carlsson and Carlsson (2002), Carlsson and Nilsson (2000), Lehtonen et al. (2009), Nilsson et al. (2008), Östergren et al. (2015), Samuiloviene et al. (2009), Was and Bernaś (2016), and Was and Wenne (2002) (Tab. 2). Locations for Östergren et al. (2015) are indicated at the respective river outlets.

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