Effect of Salinity Stress on the Biochemical and Nutritional Parameters of Tiger Shrimp Penaeus monodon
Effect of Salinity Stress on the Biochemical and Nutritional Parameters of Tiger Shrimp Penaeus monodon
Date
2013
Authors
Kiruthika, J.
Rajesh, S.
Kumar, K. Vinaya
Gopikrishna, G.
Khan, H. Imran
Madhubabu, E. Prudhvi
Natarajan, M.
Dayal, Syama
Ponniah, A.G.
Shekhar, M.S.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Biochemical and physiological changes in Penaeus
monodon on exposure to salinity stress conditions
were studied. Total haemocyte count (THC), total
protein concentration (PC), phenoloxidase (PO)
activity, respiratory burst and osmolality were
measured in low (3‰) and high salinity (55‰)
stressed shrimps in comparison to control shrimp
samples maintained at 28‰ salinity. THC (18 ± 2 x
106 cells ml-1) was significantly lower in the shrimps
exposed to high salinity stress at one week interval
when compared with the control group (38 ± 2 x 106
cells ml-1) while no significant difference was
observed in THC between the control and low
salinity stressed shrimps at any time interval. Total
protein concentration was maximum at 6 h interval
under low salinity (195±10 mg ml-1) and at 48 h
under high salinity (219±15 mg ml-1) conditions.
Respiratory burst in the haemolymph was significantly
high at 24 h in low salinity (3.71±0.01) and
high salinity (0.905±0.01) stressed shrimps. Significant
decrease in osmolality levels in low salinity
stressed group was identified at 6 h whereas, in high
salinity stressed group, maximum increase was at 48
h. Moisture content and lipid in shrimp muscle were
significantly (p<0.05) higher in low salinity stress
conditions than in high salinity conditions. Total ash
content was significantly high at 55‰ salinity,
whereas, no significant difference was observed in
protein content in the muscle tissues of tiger shrimp
maintained at 3‰ and 55‰ salinity conditions
Description
Keywords
Penaeus monodon, salinity stress, biochemical parameters, nutritional parameters
Citation
Fishery Tech 50 (4) : 294-300