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Assessment of the hemorheological profile of koala and echidna
  • Oguz K. Baskurt, Akdeniz University
  • Sonya Marshall-Gradisnik, Bond University
  • Michael Pyne, Currumbin Wildlife Sanctuary
  • Michael Simmonds, Griffith University
  • Ekua Brenu, Bond University
  • Rhys Christy, Bond University
  • Herbert J. Meiselman, University of Southern California
Date of this Version
Document Type
Journal Article
Publication Details

Interim status: Citation only.

Baskurt, O. K., Marshall-Gradisnik, S., Pyne, M., Simmonds, M., Brenu, E., Christy, R., Meiselman, H. J. (2010). Assessment of the hemorheological profile of koala and echidna. Zoology, 113(2), 110-117.

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2010 HERDC submission. FoR Code: 110799, 111701, 119999

© Copyright 2010 Elsevier GmbH.

Koala, a marsupial, and echidna, a monotreme, are mammals native to Australia. Blood viscosity (62.5-1250 s-1), red blood cell (RBC) deformability, RBC aggregation, aggregability and surface charge, and hematological parameters were measured in blood samples from six koalas and six echidnas and compared to adult human blood. Koala had the largest RBC mean cell volume (107.7±2.6 fl) compared to echidna (81.3±2.6 fl) and humans (88.4±1.2 fl). Echidna blood exhibited the highest viscosity over the entire range of shear rates. Echidna RBC were significantly less deformable than koala RBC but more deformable than human RBC. Echidna RBC had significantly lower aggregability (i.e., aggregation in standardized dextran medium) than koala or human RBC, while aggregation in autologous plasma was similar for the three species. Erythrocyte surface charge as indexed by RBC electrophoretic mobility was similar for human and echidna cells but was 40% lower for koala RBC. Data obtained during this preliminary study indicate that koala and echidna have distinct hemorheological characteristics; investigation of these properties may reveal patterns relevant to specific behavioral and physiological features of these animals.
Citation Information
Oguz K. Baskurt, Sonya Marshall-Gradisnik, Michael Pyne, Michael Simmonds, et al.. "Assessment of the hemorheological profile of koala and echidna" Zoology Vol. 113 Iss. 2 (2010) p. 110 - 117
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