CYTB haplotype network for La Jolla (a) and Point Loma (b) regions for T. californicus. Network is depicted as described in Figure 3. For La Jolla, the three groups of haplotypes that cluster by geography are labeled in addition to the haplotype IV that is shared by five sites. For Point Loma, haplotypes are labeled by site when more than two individuals share a haplotype from the same site. There are 23 synonymous and 1 non-synonymous substitutions in CYTB separating Point Loma and Laguna Beach (and 101 synonymous and 6 non-synonymous substitutions separating Point Loma and La Jolla). Dashed lines indicate alternative haplotype relationships found in statistical parsimony analyses.