Synopsis
Heterogeneous gene frequencies of Est-1 across groups ofNotropis cornutus provide evidence of behaviourally imposed restrictions on stock structuring. Positive fixation indices (F1S = 0.056 and F1T = 0.085) were reflected by a deficiency of heterozygotes for pooled groups. The degree of subdivision ofN. cornutus stocks cannot be evaluated with the present evidence. but it is likely that their schooling behaviour is associated with significant genotypic structuring of the species.
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Ferguson, M.M., Noakes, D.L.G. Social grouping and genetic variation in common shiners, Notropis cornutus (Pisces, Cyprinidae). Environ Biol Fish 6, 357–360 (1981). https://doi.org/10.1007/BF00005765
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DOI: https://doi.org/10.1007/BF00005765