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Titolo:
ACTIVITY, MILK INTAKE AND ENERGY-CONSUMPTION IN FREE-LIVING RINGED SEAL (PHOCA-HISPIDA) PUPS
Autore:
LYDERSEN C; HAMMILL MO;
Indirizzi:
UNIV OSLO,DEPT BIOL,DIV GEN PHYSIOL,POB 1051 N-0316 OSLO NORWAY INST MAURICE LAMONTAGNE MONT JOLI G5H 3Z4 PQ CANADA
Titolo Testata:
Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology
fascicolo: 6, volume: 163, anno: 1993,
pagine: 433 - 438
SICI:
0174-1578(1993)163:6<433:AMIAEI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
NORTHERN ELEPHANT SEAL; WATER FLUX; HARP SEALS; MIROUNGA-ANGUSTIROSTRIS; POTENTIAL ERRORS; HARBOR SEALS; LACTATION; GROENLANDICA; ENERGETICS; METABOLISM;
Keywords:
GROWTH; BODY COMPOSITION; ACTIVITY BUDGET; ENERGY CONSUMPTION; RINGED SEAL (PHOCA-HISPIDA) PUPS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
C. Lydersen e M.O. Hammill, "ACTIVITY, MILK INTAKE AND ENERGY-CONSUMPTION IN FREE-LIVING RINGED SEAL (PHOCA-HISPIDA) PUPS", Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 163(6), 1993, pp. 433-438

Abstract

Measurements of growth, activity and energy consumption and estimatesof milk intake were made in free-living, nursing ringed seal (Phoca hispida) pups. This was accomplished through the simultaneous use of time-depth recorders and the doubly labelled water technique. The pups spent an average of 52 +/- 7% of their time hauled out on the ice, 37 +/- 5 % of the time in the water at the surface, and 11 +/- 5% of the time diving. Average daily mass gain of the pups (n = 3) throughout theduration of the study period was 0.35 +/- 0.08 kg. The composition ofthe mass gain was 76% fat, 6% protein and 18% water. The total water flux was measured to be 52 +/- 10 ml.kg-1.day-1. Average CO2 production was 0.85 +/- 0.16 ml.g-1.h-1, corresponding to a field metabolic rate of 0.55 +/- 0.10 MJ.kg-1.day-1, or 3.8 +/- 0.6 times the predicted basal metabolic rate based on body size (Kleiber 1975). Average daily milk intake was estimated to be 1379 +/- 390 ml. The field metabolic rate for the different components of seal pup activity budgets were calculated to be FMR(haul out) = 1.34 BMR, FMR(surface) = 6.44 BMR, and FMR(diving) = 5.88 BMR.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 18:01:00