Hemoglobin affinity for oxygen in three subspecies of toads (Bufo sp.) living at different altitudes
Biol. Res
; 33(1): 5-10, 2000. ilus, tab, graf
Article
em En
| LILACS
| ID: lil-265762
Biblioteca responsável:
BR1.1
RESUMO
Blood oxygen affinity and red blood cell properties were measured in three subspecies of genus Bufo Bufo spinulosus limensis, collected at sea level and at an average day temperature of 20§C; Bufo spinulosus trifolium, from 3100 m, average day temperature of 15§C; and Bufo spinulosus flavolineatus, from 4100 m, average day temperature of 10§C. Electrophoresis of the hemoglobin showed the same component in each of the three subspecies. At 20§C the blood oxygen affinities (P50) showed small differences between Bufo spinulosus limensis and Bufo spinulosus trifolium, whereas the value for Bufo spinulosus flavolineatus was markedly lower. At 10§C, the ambient temperature of Bufo spinulosus flavolineatus, the P50 was extremely low compared with the other two subspecies at their corresponding ambient temperatures.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Oxigênio
/
Bufonidae
/
Hemoglobinas
/
Adaptação Fisiológica
/
Altitude
Limite:
Animals
Idioma:
En
Revista:
Biol. Res
Assunto da revista:
BIOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Chile
País de publicação:
Chile