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. Author manuscript; available in PMC: 2013 Dec 20.
Published in final edited form as: Evolution. 2012 Jun 11;66(11):10.1111/j.1558-5646.2012.01701.x. doi: 10.1111/j.1558-5646.2012.01701.x

Figure 4.

Figure 4

The strength of assortative mating via spatial cosegregation depends on the simultaneous strength of male-habitat and female-habitat correlations. The indirect partial correlation between males and females, rm*f is the product of the partial correlations between each sex and a habitat variable (rm*h and rf*h), shown by contour lines. Dashed lines representative data from this study: the measured correlations between male and female tropic position and shore (both significant) lead to a predicted strength of assortment of 0.083. This value is significantly less than the measured correlation of 0.282.