title: Biological aspects of Amazonian fishes--VI. Hemoglobins and whole blood properties of Semaprochilodus species (Prochilodontidae) at two phases of migration.
abstract: Electrophoretic patterns of hemoglobins, red blood cell phosphates, Bohr effect of blood and stripped hemoglobin, ATP and GTP modulation of Hb-O2 affinity of two species belonging to the genus Semaprochilodus (S. insignis and S. taeniurus--jaraquis), captured at two different locations in Rio Negro, near Manaus (Amazonas), are described. High Bohr effect values were found in these two species and in jaraqui-açu (a possible hybrid between them). In S. insignis a higher Bohr effect for migrating individuals was observed, while S. taeniurus showed the reverse. The main erythrocytic phosphates found in these two species are ATP and GTP. They have a large influence on the O2-Hb binding properties in both species. The GTP/ATP ratio showed large differences between catching places. The two species have different electrophoretic patterns. Semaprochilodus insignis showed four anodal components which showed quantitative variation between catching places; S. taeniurus had three anodal components and a similar quantitative variation.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D001938:Brazil; D005399:Fishes / Q000097:blood*; D005618:Fresh Water; D006454:Hemoglobins / Q000302:isolation & purification / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000097:blood; D013045:Species Specificity
chemical_list: D006454:Hemoglobins; D010100:Oxygen