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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Neurotoxicol Teratol. 2011 Jun 1;33(6):698–707. doi: 10.1016/j.ntt.2011.05.009

Figure 3.

Figure 3

The Variance of Interindividual Distance did not significantly change in response to embryonic alcohol (EtOH) treatment when measured in 70 day post fertilization old zebrafish. Mean ± Standard Error are shown. Sample size n = 8 for each dose group (i.e. 8 shoals of ten fish each were quantified per alcohol dose). The concentration of embryonic alcohol treatment is shown above the graphs. The distance values are shown in body length. The inset in graph 1 shows the method of quantifying nearest neighbor distance. The grey circles represent individual fish in the shoal. The lines represent the interindividual distances. The interindividual distances are shown only for one focal fish, but these distances were measured for each possible pair-wise combinations of fish. Note that there are nine distance values for one focal fish and these values differ. This variability is captured in the Variance of interindividual distances measure. Also note that the slanted straight line represents the best fit regression line for graph one. The same line is drawn on the other graphs to facilitate comparison of values. For further methodological details and results of statistical analyses, see Methods and Results.