ISSN:
1432-136X
Keywords:
Hemolymph PO2
;
Oxyhemocyanin
;
Nitrite
;
Ammonia-N excretion
;
Shrimp, Penaeus monodon
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Abstract Subadult Penaeus monodon (21.03±3.19 g) were exposed individually in sea water (30 mg·ml-1) to 0.02 (control), 1.04, 5.02, 10.11 and 20.06 mg·l-1 nitrite-N for 24h. Hemolymph pH, partial pressures of oxygen and carbon dioxide, bicarbonate concentration, oxyhemocyanin and protein levels, and whole animal ammonia-N excretion and nitrite-N uptake were determined. Ammonia-N excretion and hemolymph oxygen partial pressure increased, whereas hemolymph pH, HCO 3 - , oxyhemocyanin, protein and the ratio of oxyhemocyanin/protein levels decreased with increasing ambient nitrite-N. It is suggested that accumulated nitrite of P. monodon following exposure to ambient nitrite causes reduction of oxyhemocyanin, protein and the ratio of oxyhemocyanin/protein in the hemolymph, and affects nitrogen metabolism and acid-base balance at low hemolymph pH.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00261393
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