TY - JOUR
T1 - The effect of salinity and ion composition on oxygen consumption and nitrogen excretion of Macrobrachium rosenbergii (de man)
AU - Stern, S.
AU - Borut, A.
AU - Cohen, D.
PY - 1984
Y1 - 1984
N2 - 1. 1. Oxygen consumption and nitrogen excretion rates of Macrobrachium rosenbergii were recorded in media of varying salinities and ion compositions (Mevo Hamma, Yahel, Elat-continental water; and 15 and 24%. seawater dilutions). 2. 2. Oxygen consumption rates were not significantly different (P > 0.05) with the exclusion of Yahel having a metabolic rate of 0.258ml O2/gfw/hr which was significantly different from the other experimental media at the P ≲- 0.05 level. 3. 3. Nitrogen excretion rates were lowest in prawns adapted to Yahel water, 0.0188mg NH4-N/gfw/hr and increased with salinity to 0.0494mg NH4-N/gfw/hr in 24%. 4. 4. The O: N ratios ranged from 12.24 to 22.65 indicating that in dilute media (Mevo Hamma and Yahel) relative to saline media (15%, Elat and 24%) more lipids and carbohydrates are utilized as an energy substrate while the latter group increased protein catabolism.
AB - 1. 1. Oxygen consumption and nitrogen excretion rates of Macrobrachium rosenbergii were recorded in media of varying salinities and ion compositions (Mevo Hamma, Yahel, Elat-continental water; and 15 and 24%. seawater dilutions). 2. 2. Oxygen consumption rates were not significantly different (P > 0.05) with the exclusion of Yahel having a metabolic rate of 0.258ml O2/gfw/hr which was significantly different from the other experimental media at the P ≲- 0.05 level. 3. 3. Nitrogen excretion rates were lowest in prawns adapted to Yahel water, 0.0188mg NH4-N/gfw/hr and increased with salinity to 0.0494mg NH4-N/gfw/hr in 24%. 4. 4. The O: N ratios ranged from 12.24 to 22.65 indicating that in dilute media (Mevo Hamma and Yahel) relative to saline media (15%, Elat and 24%) more lipids and carbohydrates are utilized as an energy substrate while the latter group increased protein catabolism.
UR - http://www.scopus.com/inward/record.url?scp=0000364473&partnerID=8YFLogxK
U2 - 10.1016/0300-9629(84)90428-6
DO - 10.1016/0300-9629(84)90428-6
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AN - SCOPUS:0000364473
SN - 0300-9629
VL - 79
SP - 271
EP - 274
JO - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
JF - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
IS - 2
ER -