On Tuesday I joined Alain Crivelli, who is currently in Slovenia, Dušan Jesenšek and other members of RD Tolmin on the field. I collected some skin samples of hybrids downstream, where the populations of marble trout have been hybridizing with brown trout, while they were monitoring the pure populations of marble trout upstream. Their study, with the purpose of observing population dynamics, has been already a long collaboration between the groups and is still going on.
Even if I needed to sample hybrids for the pigment pattern study I’m happy to say that there were not so many of them but when we moved upstream, there were plenty of marble trouts.
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