Fig. 1
From: Extensive variation in sperm morphology in a frog with no sperm competition
Map showing sampling localities for reproductively active male spring peepers (P. crucifer) in southwestern Ontario, Canada. The area of secondary contact between the Eastern and Interior mitochondrial DNA lineages is shaded in pink, following [11, 14]. Sampled populations are Pond Mills (PM), Fingal (FI), Starkey Hill (SH), Dereham (DE), Calton Swamp (CS), Lafortune (LA), and Long Point (LP) (see [14] for details). The red rectangle on the inset map shows the area of the main map, as well as the ranges of the six mitochondrial lineages of spring peepers in eastern North America [11]. Map modified with permission from: Southern Ontario-Regional Municipality Boundaries [pdf file]: Brock University Map, Data & GIS Library. Available: Brock University Map, Data & GIS Library at http://www.brocku.ca/maplibrary/maps/outline/Ontario/Sontbase.pdf (Accessed August 15, 2015)