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Titolo:
HEPATIC RESPIRATORY COMPENSATION AND HEMATOLOGICAL-CHANGES IN THE CAVE CYPRINID, PHREATICHTHYS ANDRUZZII
Autore:
FRANGIONI G; BERTI R; BORGIOLI G;
Indirizzi:
UNIV FLORENCE,DEPT ANIM BIOL & GENET,VIA ROMANA 17 I-50125 FLORENCE ITALY
Titolo Testata:
Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology
fascicolo: 7, volume: 167, anno: 1997,
pagine: 461 - 467
SICI:
0174-1578(1997)167:7<461:HRCAHI>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
FROG RANA-ESCULENTA; EUROPEAN SEA BASS; RAINBOW-TROUT; BLOOD PARAMETERS; SPLEEN; NEWT; VOLUME; HEMOCONCENTRATION; ERYTHROCYTES; RESPONSES;
Keywords:
BLOOD; CAVE FISH; ERYTHROCYTES; LIVER; SPLEEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
G. Frangioni et al., "HEPATIC RESPIRATORY COMPENSATION AND HEMATOLOGICAL-CHANGES IN THE CAVE CYPRINID, PHREATICHTHYS ANDRUZZII", Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 167(7), 1997, pp. 461-467

Abstract

In several ectotherms, including all members of the Osteichthyes studied so far, the spleen is capable of storing and releasing erythrocytes according to the animal's respiratory needs. The tropical cave cyprinid Phreatichthys andruzzii uses its liver rather than the spleen as the site of accumulation in the respiratory compensation process, like the amphibian Rana esculenta. The reversible process of erythrocyte accumulation in the liver is very evident in animals anaesthetized with chlorobutanol; MS-222, an anaesthetic widely used in lower vertebratesalters all the haematological parameters and is not suitable for studies on blood and respiration. The hepatic respiratory compensation mechanism is as efficient as the splenic one: in animals kept at 18 degrees C for 24 h the mean liver weight percentage was 70% higher than in specimens kept at 28 degrees C (2.43% of the body weight compared to 1.39%, in groups of six specimens) while mean red blood cell counts fell from 2.49 to 1.60.10(12) per 1, in agreement with the haematocrit value and haemoglobin concentration; mean corpuscular volume remained constant (at about 177 fl).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 08:54:39