Comparative study of the erythrocytes and haemoglobins in nototheniid fishes from Antarctica
Identifieur interne : 001D53 ( Main/Curation ); précédent : 001D52; suivant : 001D54Comparative study of the erythrocytes and haemoglobins in nototheniid fishes from Antarctica
Auteurs : R. M. G. Wells [Nouvelle-Zélande] ; M. D. Ashby [Nouvelle-Zélande] ; S. J. Duncan [Nouvelle-Zélande] ; J. A. Macdonald [Nouvelle-Zélande]Source :
- Journal of Fish Biology [ 0022-1112 ] ; 1980-11.
Abstract
The blood of seven Antarctic nototheniid species and representatives from three other families contained low haemoglobin concentrations compared with non‐polar marine teleosts. Haematocrit values were slightly lower than values from other teleosts, while haemoglobin and erythrocyte counts were substantially reduced by comparison. Interspecific variation in haemoglobin concentration seemed to be a function of activity level. Mean corpuscular haemoglobin concentration of all Antarctic species was strikingly low by comparison with species from lower latitudes and was not correlated with the habits of the species. Haemoglobin componentry was compared using celluslose‐acetate electrophoresis and, unlike many temperate species, only one major haemoprotein was isolated from each benthic species, but four components were evident in the pelagic species Trematomus borchgrevinki. The possible functional significance of these findings was discussed in relation to the ecology of each species.
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DOI: 10.1111/j.1095-8649.1980.tb02783.x
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<front><div type="abstract" xml:lang="en">The blood of seven Antarctic nototheniid species and representatives from three other families contained low haemoglobin concentrations compared with non‐polar marine teleosts. Haematocrit values were slightly lower than values from other teleosts, while haemoglobin and erythrocyte counts were substantially reduced by comparison. Interspecific variation in haemoglobin concentration seemed to be a function of activity level. Mean corpuscular haemoglobin concentration of all Antarctic species was strikingly low by comparison with species from lower latitudes and was not correlated with the habits of the species. Haemoglobin componentry was compared using celluslose‐acetate electrophoresis and, unlike many temperate species, only one major haemoprotein was isolated from each benthic species, but four components were evident in the pelagic species Trematomus borchgrevinki. The possible functional significance of these findings was discussed in relation to the ecology of each species.</div>
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