Seasonal changes in buoyancy and diving behaviour of adult grey seals

Journal of Experimental Biology

Volumn 203, Issue 15, 2000, Pages 2323-2330

  Beck, Carrie A ^a   Bowen, W Don ^b   Iverson, Sara J ^a  

^a DALHOUSIE UNIVERSITY   (Canada)

^b BEDFORD INSTITUTE OF OCEANOGRAPHY   (Canada)

Author keywords

Body composition; Body mass; Buoyancy; Diving; Drag; Grey seal; Halichoerus grypus; Season

Indexed keywords

ADIPOSE TISSUE; ANIMAL; ANIMAL BEHAVIOR; ARTICLE; BODY WEIGHT; DIVING; FEMALE; HISTOLOGY; MALE; PHOCA; PHYSIOLOGY; SEASON;

ADIPOSE TISSUE; ANIMALS; BEHAVIOR, ANIMAL; BODY WEIGHT; DIVING; FEMALE; MALE; SEALS, EARLESS; SEASONS;

ANIMALIA; GRYPUS; HALICHOERUS GRYPUS; PHOCIDAE;

EID: 0343006737     PISSN: 00220949     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (25)

1. Bowen, W. D., Beck, C. A. and Iverson, S. J. (1999). Bioelectrical impedance analysis as a means of estimating total body water in grey seals. Can. J. Zool. 77, 1-5.
2. Bowen, W. D. and Iverson, S. J. (1998). Estimation of total body water in pinnipeds using hydrogen-isotope dilution. Physiol. Zool. 71, 329-332.
3. Bowen, W. D., Oftedal, O. T. and Boness, D. J. (1992). Mass and energy transfer during lactation in a small phocid, the harbor seal (Phoca vitulina). Physiol. Zool. 65, 844-866.
4. Chabot, D., Stenson, G. B. and Cadigan, N. B. (1996). Short- and long-term fluctuations in the size and condition of harp seals (Phoca groenlandica) in the Northwest Atlantic. NAFO SCR Doc. 95/42., Serial No. N2551.
5. Coltman, D. W., Bowen, W. D., Iverson, S. J. and Boness, D. J. (1998). The energetics of male reproduction in an aquatically mating pinniped, the harbour seal. Physiol. Zool. 71, 387-399.
6. Costa, D. P., Le Boeuf, B. J., Ortiz, C. L. and Huntley, A. C. (1986). Energetics of lactation in the Northern elephant seal, Mirounga angustirostris. J. Zool., Lond. 209, 21-33.
7. Crocker, D. E., Le Boeuf, B. J. and Costa, D. P. (1997). Drift diving in female northern elephant seals: implications for food processing. Can. J. Zool. 75, 27-39.
8. Cromer, A. H. (1977). Physics for the Life Sciences. New York: McGraw-Hill Companies, Inc. Primsis Custom Publishing. 530pp.
9. Emery, R. S. (1969). Lipids and adipose tissue. In Animal Growth and Nutrition (ed. E. S. E. Hafez and I. A. Dyer), pp. 236-255. Philadelphia: Lea & Febiger Press.
10. Godsell, J. (1991). The relative influence of age and weight on the reproductive behaviour of male grey seals, Halichoerus grypus. J. Zool., Lond. 224, 537-551.
11. Iverson, S. J., Bowen, W. D., Boness, D. J. and Oftedal, O. T. (1993). The effect of maternal size and milk output on pup growth in grey seals (Halichoerus grypus). Physiol. Zool. 66, 61-88.
12. Lager, A. R., Nordy, E. S. and Blix, A. S. (1994). Seasonal changes in food intake of harp seals (Phoca greonlandica) at 69°N. Mar. Mammal. Sci. 10, 332-341.
13. Mellish, J-A. E. (1999). Physiology of milk fat secretion and neonatal fat deposition during lactation in phocid seals. PhD dissertation, Dalhousie University, Halifax, Nova Scotia. 250pp.
14. Mellish, J.-A. E., Iverson, S. J. and Bowen, W. D. (1999). Variation in milk production and lactation performance in grey seals and consequences for pup growth and weaning characteristics. Physiol. Biochem. Zool. 67, 677-690.
15. Nordøy, E. S. and Blix, A. S. (1985). Energy sources in fasting grey seal pups evaluated with computed tomography. Am. J. Physiol. 249, R471-R476.
16. Ortiz, C. L., Costa, D. P. and Le boeuf, B. J. (1978). Water and energy flux in elephant seal pups fasting under natural conditions. Physiol. Zool. 51, 166-178.
17. Reilly, J. J. and Fedak, M. A. (1990). Measurement of the body composition of living gray seals by hydrogen isotope dilution. J. Appl. Physiol. 69, 885-891.
18. Ryg, M., Smith, T. G. and Oritsland, N. A. (1990). Seasonal changes in body mass and body composition of ringed seals, Phoca hispida, on Svalbard. Can. J. Zool. 68, 470-475.
19. Scheer, J. F. and Testa, J. W. (1995). Statistical classification of diving behavior. Mar. Mammal. Sci. 11, 85-93.
20. Sergeant, D. E. (1976). History and present status of harp and hooded seals. Biol. Conserv. 10, 95-118.
21. Tully, D. K. (1999). Analysis of foraging behaviour of adult male harbour seals using animal-born video data: effects of prey type on tactics and profitability. MSc dissertation, Dalhousie University. Halifax, Nova Scotia. 52pp.
22. Webb, P. M., Crocker, D. E., Blackwell, S. B., Costa, D. P. and Le Boeuf, B. J. (1998). Effects of buoyancy on the diving behavior of northern elephant seals. J. Exp. Biol. 201, 2349-2358.
23. Williams, J. D. (1995). Fasting and lactation in female Northern elephant seals (Mirounga angustirostris): Reconciling conflicting energetic and nutritional demands. PhD dissertation, University of California, Santa Cruz, California. 108pp.
24. Williams, T. M. and Kooyman, G. L. (1985). Swimming performance and hydrodynamic characteristics of harbour seals. Phoca vitutina. Physiol. Zool. 58, 576-589.
25. Worthy, G. A. J., Morris, P. A., Costa, D. P. and Le Boeuf, B. J. (1992). Moult energetics of the northern elephant seal (Mirounga angustirostris). J. Zool., Lond. 227, 257-265.