Age, sex, and reproductive state influence free amino acid concentrations in the fasting elephant seal

Physiological and Biochemical Zoology

Volumn 77, Issue 5, 2004, Pages 838-846

  Houser, Dorian S ^a   Crocker, Daniel E ^a  

^a SONOMA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AMINO ACID;

AMINO ACID; METABOLISM; PINNIPED;

ADAPTATION; AGE; ANIMAL; ARTICLE; BLOOD; COMPARATIVE STUDY; DIET RESTRICTION; FEMALE; ION EXCHANGE CHROMATOGRAPHY; LACTATION; MALE; PHOCA; PHYSIOLOGY; REPRODUCTION; SEX DIFFERENCE; UNITED STATES;

ADAPTATION, PHYSIOLOGICAL; AGE FACTORS; AMINO ACIDS; ANIMALS; CALIFORNIA; CHROMATOGRAPHY, ION EXCHANGE; FASTING; FEMALE; LACTATION; MALE; REPRODUCTION; SEALS, EARLESS; SEX FACTORS;

ELEPHANT; MIROUNGA; MIROUNGA ANGUSTIROSTRIS; PHOCIDAE;

EID: 11144264566     PISSN: 15222152     EISSN: None     Source Type: Journal    
DOI: 10.1086/422055     Document Type: Article

References (38)

1. Adams S.H. and D.P. Costa. 1993. Water conservation and protein metabolism in northern elephant seal pups during the postweaning fast. J Comp Physiol B 163:367-373.
2. Atkinson S.N., R.A. Nelson, and M.A. Ramsay. 1996. Changes in the body composition of fasting polar bears (Ursus maritimus): the effect of relative fatness on protein conservation. Physiol Zool 69:304-316.
3. Boness D.J. and W.D. Bowen. 1996. The evolution of maternal care in pinnipeds. Bioscience 46:645-654.
4. Castellini J.M., M.A. Castellini, and M.B. Kretzmann. 1990. Circulatory water concentration in suckling and fasting northern elephant seal pups. J Comp Physiol B 160:537-542.
5. Castellini M.A., D.P. Costa, and A.C. Huntley. 1987. Fatty acid metabolism in fasting elephant seal pups. J Comp Physiol B 157:445-449.
6. Cherel Y., F. Freby, J. Gilles, and J.-P. Robin. 1993. Comparative fuel metabolism in gentoo and king penguins: adaptation to brief versus prolonged fasting. Polar Biol 13:263-269.
7. Cherel Y. and R. Groscolas. 1999. Relationships between nutrient storage and nutrient utilization in long-term fasting birds and mammals. Pp. 17-34 in N.J. Adams and R.H. Slotow, eds. Proceedings of the 22d International Ornithology Congress. Birdlife South Africa, Johannesburg.
8. Cherel Y., J.-P. Robin, A. Heitz, C. Calgari, and Y. Le Maho. 1992. Relationships between lipid availability and protein utilization during prolonged fasting. J Comp Physiol B 162:305-313.
9. Costa D.P., B.J. Le Boeuf, A.C. Huntley, and C.L. Ortiz. 1986. The energetics of lactation in the northern elephant seal, Mirounga angustirostris. J Zool (Lond) 209:21-33.
10. Costa D.P. and C.L. Ortiz. 1982. Blood chemistry homeostasis during prolonged fasting in the northern elephant seal. Am J Physiol 242:R591-R595.
11. Crocker D.E. 1995. Reproductive Effort and Fasting Physiology of Female Northern Elephant Seals, Mirounga angustirostris. PhD diss. University of California, Santa Cruz.
12. Crocker D.E., P.M. Webb, D.P. Costa, and B.J. Le Boeuf. 1998. Protein catabolism and renal function in lactating northern elephant seals. Physiol Zool 71:485-491.
13. Davies D.T., C. Holt, and W. Christie. 1983. The composition of milk. Pp. 71-117 in T.B. Mepham, ed. Biochemistry of Lactation. Elsevier, Amsterdam.
14. Davis T.A., H.V. Nguyen, D.P. Costa, and P.J. Reeds. 1995. Amino acid composition of pinniped milk. Comp Biochem Physiol B 110:633-639.
15. Goodman M.N., P.R. Larsen, M.M. Kaplan, T.T. Aoki, V.R. Young, and N.B. Ruderman. 1980. Starvation in the rat. II. Effect of age and obesity on protein sparing and fuel metabolism. Am J Physiol 239:E277-E286.
16. Houser D.S. and D.P. Costa. 2001. Protein catabolism in suckling and fasting northern elephant seal pups (Mirounga angustirostris). J Comp Physiol B 171:635-642.
17. Keith E.O. 1984. Glucose Metabolism in Fasting Northern Elephant Seal Pups. PhD diss. University of California, Santa Cruz.
18. Keith E.O. and C.L. Ortiz. 1989. Glucose kinetics in neonatal elephant seals during postweaning aphagia. Mar Mamm Sci 5:99-115.
19. Kirby V.L. and C.L. Ortiz. 1994. Hormones and fuel regulation in fasting elephant seals. Pp. 374-386 in B.J. Le Boeuf and R.M. Laws, eds. Elephant Seals: Population Ecology, Behavior, and Physiology. University of California Press, Berkeley.
20. Kovacs K.M. and D.M. Lavigne. 1986. Maternal investment and neonatal growth in phocid seals. J Anim Ecol 55:1035-1051.
21. Kretzmann M.B., D.P. Costa, and B.J. Le Boeuf. 1993. Maternal energy investment in elephant seal pups: evidence for sexual equality? Am Nat 141:466-480.
22. Le Boeuf B.J. 1974. Male-male competition and reproductive success in elephant seals. Am Zool 14:163-176.
23. Le Boeuf B.J., D.E. Crocker, D.P. Costa, S.B. Blackwell, P.M. Webb, and D.S. Houser. 2000. Foraging ecology of northern elephant seals. Ecol Monogr 70:353-382.
24. Lee P.L.Y. and R.H. Slocum. 1988. A high-resolution method for amino acid analysis of physiological fluids containing mixed disulfides. Clin Chem 34:719-723.
25. Lehninger A.L. 1993. Principles of Biochemistry. Worth, New York.
26. Mepham T.B. 1982. Amino acid utilization by lactating mammary gland. J Dairy Sci 65:287.
27. _. 1987. Physiology of Lactation. Open University Press, Milton Keynes.
28. Ortiz C.L., D.P. Costa, and B.J. Le Boeuf. 1978. Water and energy flux in elephant seal pups fasting under natural conditions. Physiol Zool 51:166-178.
29. Pernia S.D., A. Hill, and C.L. Ortiz. 1980. Urea turnover during prolonged fasting in the northern elephant seal. Comp Biochem Physiol B 65:731-734.
30. Rea L.D. and D.P. Costa. 1992. Changes in standard metabolism during long-term fasting in northern elephant seal pups (Mirounga angustirostris). Physiol Zool 65:97-111.
31. Riedman M. 1991. The Pinnipeds: Seals, Sea Lions, and Walruses. University of California Press, Berkeley.
32. Riedman M. and C.L. Ortiz. 1979. Changes in milk composition during lactation in the northern elephant seal. Physiol Zool 52:240-249.
33. Salway J.G. 1999. Metabolism at a Glance. Blackwell Science, Malden, Mass.
34. Slip D.J., N.J. Gales, and H.R. Burton. 1992. Body mass loss, utilisation of blubber and fat, and energetic requirements of male southern elephant seals, Mirounga leonina, during the moulting fast. Aust J Zool 40:235-243.
35. Thorson P.H. and B.J. Le Boeuf. 1994. Developmental aspects of diving in northern elephant seal pups. Pp. 271-289 in B.J. Le Boeuf and R.M. Laws, eds. Elephant Seals: Population Ecology, Behavior, and Physiology. University of California Press, Berkeley.
36. Toda K., Y. Ishibashi, Y. Hori, and F. Morikawa. 1976. Biology and Disease of the Hair. University of Tokyo Press, Tokyo.
37. Worthy G.A.J., P.A. Morris, D.P. Costa, and B.J. Le Boeuf. 1992. Moult energetics of the northern elephant seal (Mirounga angustirostris). J Zool (Lond) 227:257-265.
38. Wright P.A., M.E. Obbard, B.J. Battersby, A.K. Felskie, P.J. LeBlanc, and J.S. Ballantyne. 1999. Lactation during hibernation in wild black bears: effects on plasma amino acids and nitrogen metabolites. Physiol Biochem Zool 72:597-604.