Table 4.

CDL changes since the open field introduction of D. carinulata into North America

Population	CDL (35–15°C)	Difference (2008 minus original determination*)
Lovell, Wyoming	14.71	−0.16 (10 min shorter)
Lovelock, Nevada	14.16	−0.72 (43 min shorter)
Pueblo, Colorado	14.48	−0.41 (25 min shorter)
Artesia New Mexico	13.96	−0.90 (54 min shorter)
Pueblo, Colorado (field)	14.23	−0.38 (23 min shorter)†

^*The original determination of CDL was made under a thermoperiod with 18°C amplitude and an average temperature of 25°C, while the CDL measured in 2008 was under a thermoperiod with amplitude 20°C. The CDL was originally measured at 14.88 h (14 h 53 min).

^†The original determination of field CDL was made from data taken during the summer of 2003 at the Pueblo site and was 14.62 h (14 h 37 min) (Bean et al. 2007a).