Abstract
Using horizontal agarose thin layer gel electrophoresis, 35 allozyme loci were screened in 233 brown trout (Salmo trutta L.) from 11 populations in southwest Germany across the Rhenanian-Danubian watershed. Polymorphism was found at 10 loci, with stocked populations exhibiting significantly increased polymorphism compared with unmanaged stocks (P = 0.219 vs. P = 0.132). Standard genetic distances between populations from different brooks averaged at D = 0.01. Of the total gene diversity of GST = 0.198, only a negligible amount partitioned between Rhenanian and Danubian drainages (GGT = 0.010). One biallelic locus, LDH-5*, indicated river-specific allele frequencies, with the allele LDH-5*105 being markedly more frequent within the Danubian drainage system. In contrast, LDH-5*100 was close to fixation in the Rhenanian populations. This locus suggests a phylogeographical relationship of Danubian trout from southwest Germany with brown trout from southeastern Europe rather than with conspecifics of adjacent Rhenanian origin.
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Riffel, M., Storch, V. & Schreiber, A. Allozyme variability of brown trout (Salmo trutta L.) populations across the Rhenanian–Danubian watershed in southwest Germany. Heredity 74, 241–249 (1995). https://doi.org/10.1038/hdy.1995.37
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DOI: https://doi.org/10.1038/hdy.1995.37
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