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Titolo:
Seasonal changes in blood cells of Arctic char (Salvelinus alpinus L.) from a high mountain lake
Autore:
Hofer, R; Stoll, M; Romani, N; Koch, F; Sordyl, H;
Indirizzi:
Innsbruck Univ, Inst Zool & Limnol, A-6020 Innsbruck, Austria Innsbruck Univ Innsbruck Austria A-6020 imnol, A-6020 Innsbruck, Austria Univ Clin, Dept Dermatol & Venerol, A-6020 Innsbruck, Austria Univ Clin Innsbruck Austria A-6020 & Venerol, A-6020 Innsbruck, Austria Inst Appl Ecol, D-18184 Neu Broderstorf, Germany Inst Appl Ecol Neu Broderstorf Germany D-18184 Neu Broderstorf, Germany
Titolo Testata:
AQUATIC SCIENCES
fascicolo: 4, volume: 62, anno: 2000,
pagine: 308 - 319
SICI:
1015-1621(2000)62:4<308:SCIBCO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT SALMO-GAIRDNERI; RAINBOW-TROUT; HEMATOLOGICAL RESPONSE; ONCORHYNCHUS-MYKISS; FISH; SPLEEN; ACCUMULATION; TEMPERATURE; ALKALINITY; CARP;
Keywords:
Alpine lake; Arctic char; blood cells; stress; seasons;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Hofer, R Innsbruck Univ, Inst Zool & Limnol, Technikerstr 25, A-6020 Innsbruck, Austria Innsbruck Univ Technikerstr 25 Innsbruck Austria A-6020 Austria
Citazione:
R. Hofer et al., "Seasonal changes in blood cells of Arctic char (Salvelinus alpinus L.) from a high mountain lake", AQUAT SCI, 62(4), 2000, pp. 308-319

Abstract

Seasonal changes in blood erythrocytes and lymphocytes were investigated in Arctic char from a remote high mountain lake at an altitude of 2344 m. Despite striking seasonal differences of environmental conditions the erythrocyte numbers remained constant during the year. Lymphocytes, however, displayed a distinct seasonal pattern with low abundance during the period of ice-cover (about 7 months) and high abundance in summer. During winter the circulating blood contained lymphocytes with damaged organelles and membranes, and almost exclusively mature red cells with a high density. With rising water temperature in July/August (11 degreesC), however, high-density (old)cells almost disappeared, the proportion of immature cells dramatically increased, and the capacity to responding to handling stress decreased. We conclude that in summer the accelerated erythropoiesis (recruitment of red blood cells) compensates for the reduced lifespan of red blood cells.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 09:32:06