. The Canadian field-naturalist. 1991 Ross, Brewster, Anderson, Ratner, and Brewster: Wood Turtles 365 CO <D H -P U P 4-1 O H E P Z. WR BR MF MF MF MF 40-49 50-59 130-139 140-149 150-159 160-169 170-179 180-189 190-199 200-209 210-219 220-229 230-239 Carapace Length [mm] Figure 1. Size class (carapace length) distribution of 81 Wood Turtles from Black River (BR) and Wisconsin River (WR) study areas. Black bars indicate BR turtles, white bars indicate WR turtles, and striped bars are juvenile turtles. M and F indicate male and female, respectively. the males were > 200 mm CL and 96% (N =
. The Canadian field-naturalist. 1991 Ross, Brewster, Anderson, Ratner, and Brewster: Wood Turtles 365 CO <D H -P U P 4-1 O H E P Z. WR BR MF MF MF MF 40-49 50-59 130-139 140-149 150-159 160-169 170-179 180-189 190-199 200-209 210-219 220-229 230-239 Carapace Length [mm] Figure 1. Size class (carapace length) distribution of 81 Wood Turtles from Black River (BR) and Wisconsin River (WR) study areas. Black bars indicate BR turtles, white bars indicate WR turtles, and striped bars are juvenile turtles. M and F indicate male and female, respectively. the males were > 200 mm CL and 96% (N = 50) of the females were < 200 mm CL (Figure 1). The minimum size at maturity, based on the size of the smallest gravid female, was 171 mm CL (x = mm CL, n = 38, SD = ). The three males observed in coition or mounted atop females were 180 mm CL, 197 mm CL and 209 mm CL. The smallest identifiable male was 150 mm CL. The youngest gravid female and copulating male of known ages were 14 (x = years, SD = ) and 20 years of age, respectively. Three females (two 183 mm CL [ 18 years] and one 190 mm CL [ 18 years], respectively) were gravid during two con- secutive years while one 196 mm CL (20 years) female was gravid in two nonconsecutive years. She was not known to be gravid in the intervening year. During May 1988, a marked 195 mm CL female, at least 20 years of age in 1975, was recaptured at Black River (R. Hay, personal communication). This animal was a minimum of 33 years of age in 1988. The oldest known wild Wood Turtle previ- ously reported was a minimum of 28 years (Harding and Bloomer 1979). The minimum daily movement of (MDM) of three males at BR (x = m, SD = ) was signifi- cantly longer than the MDM of four gravid females (x = m, SD = ) (t = , P<, df = 87), as determined during the period of 3 June 1975 to 1 August 1975. The home ranges of three males (x = ha, SD = ) at BR were not significantly different from th
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Keywords: ., bookauthorottawafi, bookcentury1900, bookdecade1910, bookyear1919
