TABLE 2.

Changes in potential hormone regulators of lipolysis in fasting NESs¹

	Breeding females (n = 72)		Breeding males (n = 62)		Developing pups (n = 68)
	Early	Late	Early	Late	Early	Late
Insulin, pmol/L	14.1 ± 2.9	7.8 ± 2.0*	12.7 ± 2.1	11.8 ± 2.6	13.4 ± 3.7	9.2 ± 3.4*
I:G	1.52 ± 0.51*	0.96 ± 0.43*	1.27 ± 0.10*	0.84 ± 0.06*	0.83 ± 0.22*	0.49 ± 0.16*
Cortisol, nmol/L	146.2 ± 54.1	285.6 ± 82.5*	229.0 ± 19.3	212.3 ± 24.9	177.5 ± 22.7	250.7 ± 33.2*
Growth hormone, μg/L	2.5 ± 1.0	3.3 ± 1.7*	2.3 ± 0.3	1.3 ± 0.1*	1.5 ± 0.2	1.8 ± 0.3
Epinephrine, nmol/L	120 ± 11	108 ± 8	116 ± 10	105 ± 10	54 ± 7	47 ± 13

¹Values are means ± SEMs. *Changes across the fast, P < 0.05. Data are compiled from references 24–27, 32–34, 36, 37, 41, 50 and D. Crocker, unpublished data. I:G, insulin:glucagon molar ratio.