. 2005 Jan;169(1):231–242. doi: 10.1534/genetics.104.030403

TABLE 7.

Age-specific metabolic rates in populations ofD. melanogaster stratified by average life span

		μl CO₂ (hr · fly)
Quartile	Cage life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
First measurements
1	16.3	4.97	2.43	2.22	2.52	0.13
2	24.2	4.32	2.49	2.33	2.57	0.03
3	32.0	4.76	2.70	2.33	2.75	−0.13
4	44.0	4.67	2.76	2.63	2.72	−0.12
μl CO₂ (hr · fly)
Quartile	Vial life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	25.3	5.02	2.48	2.24	2.43	0.05
2	33.0	4.53	2.48	2.23	2.54	−0.15
3	39.1	4.21	2.48	2.33	2.62	−0.04
4	50.5	4.94	2.93	2.71	2.77	−0.20
μl CO₂ (hr · mg)
Quartile	Cage life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	16.3	10.85	4.17	3.19	3.95	0.07
2	24.2	8.06	4.02	3.64	3.77	−0.15
3	32.0	9.39	4.61	3.84	3.95	−0.16
4	44.0	8.55	4.23	4.10	3.79	0.10
μl CO₂ (hr · mg)
Quartile	Vial life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	25.3	10.63	4.15	3.29	3.46	−0.02
2	33.0	15.14	4.28	3.39	3.84	−0.15
3	39.1	8.01	4.16	3.81	3.83	−0.01
4	50.5	9.40	4.48	4.28	3.90	0.15
Second measurements
μl CO₂ (hr · fly)
Quartile	Cage life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	16.3	3.30	2.24	2.32	2.70	0.13
2	24.2	3.12	2.24	2.32	2.57	0.23
3	32.0	3.28	2.37	2.32	2.59	−0.06
4	44.0	3.32	2.53	2.53	2.71	−0.19
μl CO₂ (hr · fly)
Quartile	Vial life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	25.3	3.21	2.26	2.32	2.70	0.18
2	33.0	3.17	2.26	2.26	2.41	−0.13
3	39.1	3.17	2.27	2.35	2.58	0.00
4	50.5	3.44	2.57	2.54	2.76	−0.29
μl CO₂ (hr · mg)
Quartile	Cage life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	16.3	5.48	3.87	3.64	4.19	0.06
2	24.2	5.12	3.60	3.73	3.78	−0.09
3	32.0	5.50	4.02	3.99	3.77	−0.13
4	44.0	5.24	3.79	3.99	3.79	−0.13
μl CO₂ (hr · mg)
Quartile	Vial life span (days)	Day 5	Day 16	Day 29	Day 47	r^a
1	25.3	5.35	3.51	3.78	3.51	0.05
2	33.0	5.19	3.53	3.64	3.62	−0.15
3	39.1	5.20	3.51	3.91	3.86	−0.01
4	50.5	5.57	3.79	4.01	3.91	0.16

^{^a}

Product-moment correlation coefficient between line mean CO₂ production and life span for each quartile.