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Effects of daily management stress on haematology and blood rheology of the gilthead seabream
Author(s) -
PagÉes T.,
Gómez E.,
Súñer O.,
Viscor G.,
Tort L.
Publication year - 1995
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1995.tb01601.x
Subject(s) - biology , erythrocyte fragility , blood viscosity , red blood cell , hematology , hematocrit , rheology , blood cell , medicine , hemorheology , endocrinology , zoology , immunology , hemolysis , materials science , composite material
Haematological and haemorheological responses against a moderate management stress, applied for 2 weeks, have been studied in the gilthead seabream ( Sparus aurata ). The stress application leads to a significant reduction in circulating erythrocytes, which caused decreased blood viscosity. Although erythrocyte osmotic fragility showed a trend inversely related to the duration of management stress, no significant change in cell dimensions, aggregation and deformation indices was observed. Consequently, the decrease in oxygen transport capacity attributable to haematocrit reduction, is not compensated by a qualitative change in the microrheological behaviour of erythrocytes, since the blood viscosity decreases as a direct result of the decline in red blood cell number.