Resolution: standard / high
Figure 2.
Reduced fitness of hybrids. CFM (combined fitness measure, error bars = SE, for details see text) for parental populations and F1 hybrid crosses of perch from two sympatric populations in Lake Constance.
Behrmann-Godel and Gerlach Frontiers in Zoology 2008 5:3 doi:10.1186/1742-9994-5-3
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