title: Further studies on osmotic resistance of nucleated erythrocytes: observations with pigeon, peafowl, lizard and toad erythrocytes during changes in temperature and pH.
abstract: The osmotic resistance of pigeon, peafowl, lizard and toad erythrocytes at different temperatures and pH was studied. Erythrocytes from female pigeons showed greater osmotic resistance than those from males, but no sex difference appeared with erythrocytes from peafowls. Pigeon erythrocytes were more resistant and the red blood cell, packed cell volume and haemoglobin values were higher than those in peafowls. Although no significant differences appeared in their haematological values, erythrocytes from the lizard were more resistant than erythrocytes from the toad. At higher temperature, the osmotic resistance of pigeon, lizard and toad erythrocytes increased, while that of peafowl erythrocytes decreased. The resistance of toad erythrocytes decreased in acidic and alkaline solutions, but that of peafowl erythrocytes increased in both solutions. However, with pigeon and lizard erythrocytes, the resistance was unaltered in alkaline solution and decreased in acidic solution.
authors.affiliation: Department of Veterinary Physiology and Pharmacology, University of Ibadan, Nigeria.
authors.forename: J O
authors.initials: JO
authors.lastname: Oyewale
mesh_terms: D000818:Animals; D001717:Birds / Q000097:blood*; D002025:Bufonidae / Q000097:blood*; D010856:Columbidae / Q000097:blood*; D004912:Erythrocytes / Q000378:metabolism*; D005260:Female; D008116:Lizards / Q000097:blood*; D008297:Male; D009996:Osmotic Fragility; D009997:Osmotic Pressure; D012016:Reference Values