Nom du corpus

Corpus Systématique Animale

Titre du document

Blood viscosity in phocid seals: possible adaptations to diving

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Seals
  • Pigs
  • Blood viscosity
  • Diving
  • Rheology
Nom du fichier dans la ressource
Mammiferes_v2b_00283
Auteur(s)
  • L. L. Wickham 1,2,3
  • R. Elsner 1,2,3
  • F. C. White 1,2,3
  • L. H. Cornell 1,2,3
Affiliation(s)
  • 1) Institute of Marine Science, University of Alaska, 99775, Fairbanks, Alaska
  • 2) Department of Pathology, University of California, San Diego School of Medicine, 92093, La Jolla, California, USA
  • 3) Sea World Inc., 92103, San Diego, California, USA
Résumé

1. Mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC) of phocid seal red blood cells (RBC) are elevated compared to those of most terrestrial mammalian species. The influence of these characteristics on blood flow was revealed by viscosity (VIS) measurements. 2. RBC morphology and VIS of whole blood from 7 harbor seals and 5 northern elephant seals were compared with blood of the domestic pig. Samples were analysed for RBC count, white blood cell (WBC) count, total plasma proteins, hematocrit (HCT), MCV and MCHC. Viscosity measurements were made at shear rates from 11.5 to 230.4 s?1 on a Wells-Brookfield cone-plate viscometer at 37°C. 3. Mean values for HCT (%), MCV (?m3) and MCHC (%) were, respectively: elephant seal: 57, 176, 44; harbour seal: 53, 105, 38; domestic pig: 28, 54, 34. Pig blood was reconstituted to match seal blood HCTs. VIS determinations showed that seal and pig blood conform to the general mammalian dependence of VIS upon shear rate and HCT. 4. Seal blood VIS was 28% (harbour seal) and 16% (elephant seal) less than pig blood VIS at low shear (P<0.05). Seal blood carried more hemoglobin per unit volume than did pig blood reconstituted to the same HCT. Fewer, larger RBC with higher MCHC, and hence elevated oxygen storage, accompanied by reduced VIS and reduced flow resistance near stasis suggests that this feature of phocid seal blood is an adaptation to circulatory redistribution during long dives.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - physiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences medicales
  • 4 - radiotherapie. traitement instrumental. physiotherapie. reeducation. readaptation, orthophonie, crenotherapie. traitement dietetique et traitements divers (generalites)
Catégories Scopus
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Endocrinology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Biochemistry
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Physiology
Catégories WoS
  • 1 - science ; 2 - zoology
  • 1 - science ; 2 - physiology
Identifiant ISTEX
EFB8E84F483680A24354FFADF28CE6B468320411
Revue

Journal of Comparative Physiology B

Année de publication
1989
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.107
Sous-corpus
  • Mammiferes
Type de publication
Journal
ark:/67375/1BB-56QN2MLQ-Z
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