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Titolo:
Hemocyanin oxygen affinity, and the fractionation of oxyhemocyanin and deoxyhemocyanin for Penaeus monodon exposed to elevated nitrite
Autore:
Cheng, SY; Chen, JC;
Indirizzi:
Natl Taiwan Ocean Univ, Dept Aquaculture, Keelung 20224, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 20224 lture, Keelung 20224, Taiwan
Titolo Testata:
AQUATIC TOXICOLOGY
fascicolo: 1, volume: 45, anno: 1999,
pagine: 35 - 46
SICI:
0166-445X(199903)45:1<35:HOAATF>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
INDUCED METHEMOGLOBINEMIA; PROTEIN-LEVELS; RAINBOW-TROUT; HEMOLYMPH; EXCRETION; CRUSTACEA; CRAYFISH; BINDING; AMMONIA; ASTACUS;
Keywords:
Penaeus monodon; nitrite; hemocyanin oxygen affinity; oxyhemocyanin; deoxyhemocyanin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, JC Natl Taiwan Ocean Univ, Dept Aquaculture, Keelung 20224, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 20224 elung 20224, Taiwan
Citazione:
S.Y. Cheng e J.C. Chen, "Hemocyanin oxygen affinity, and the fractionation of oxyhemocyanin and deoxyhemocyanin for Penaeus monodon exposed to elevated nitrite", AQUAT TOX, 45(1), 1999, pp. 35-46

Abstract

Hemocyanin oxygen affinity and the fractionation of oxyhemocyanin and deoxyhemocyanin in the hemolymph of Penaeus monodon were studied for individualshrimps exposed to 0.001 (control), 0.07, 0.36, 0.72 and 1.44 mmol l(-1) nitrite for 3 h up to 48 h in a salinity of 30 ppt at 25 degrees C. The hemolymph P-50 increased (indicating reduced affinity) and the hemolymph pO(2) increased directly with ambient nitrite and exposure time. Hemolymph pH. oxyhemocyanin and hemolymph protein were inversely related to ambient nitriteand exposure time. P. monodon, following 6 h exposure to ambient nitrite at 0.36 mmol l(-1), decreased significantly the fraction of oxyhemocyanin and increased that of deoxyhemocyanin. The increase of P,, and the increased fraction of deoxyhemocyanin suggests that hemocyanin) oxygen binding decreases with a concomitant decrease of hemolymph pH, when P. illoimonodon subjected to nitrite. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 09:04:44