The effects of sun exposure on carotenoid accumulation and oxidative stress in the retina of the House Finch (Haemorhous mexicanus)

Table 1 Light and temperature conditions among treatment groups in experiments 1 and 2

Experiment	Dates	Mean day length (min)	Sun exposure treatment	Daily hours of direct sun exposure	Mean light intensity (lux)^a	Min–max light intensity (lux)	Mean temperature (°C)^a	Min–max temperature (°C)
1	7 Jan–3 Mar 2008	642.88 ± 3.69	High	8	12,746.93 ± 197.76	0–176,356	15.69 ± 0.059	1.7–49.4
1	7 Jan–3 Mar 2008	642.88 ± 3.69	Low	3	5714.55 ± 176.73	0–209,424	14.37 ± 0.047	1.5–48.4
2	10 May–5 July 2010	852.10 ± 1.44	High	8	21,561.29 ± 369.69	0–220,225	31.42 ± 0.066	11.5–56.8
2	10 May–5 July 2010	852.10 ± 1.44	Low	3	5584.77 ± 183.33	0–231,468	31.07 ± 0.061	11.9–54.9

^aDiffered significantly between treatment groups and experiments (t > 4.02, p < 0.0001)

ISSN: 2053-7166