Effect of Salinity on Survival and Growth of Macrobrachium Rosenbergii (De Man) (Record no. 25527)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03119nam a2200193Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220223180203.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140128s9999 xx 000 0 und d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 639.2 |
| Item number | VEN/EF |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Venugopalan I K |
| 245 ## - TITLE STATEMENT | |
| Title | Effect of Salinity on Survival and Growth of Macrobrachium Rosenbergii (De Man) |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Panangad |
| Name of publisher, distributor, etc. | Department of Aquaculture, College of Fisheries |
| Date of publication, distribution, etc. | 1988 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | MSc |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | The effect of salinity on survival and growth of macrobrachium rosenbergii (De Man) was studied with a view to establish the optimum salinity conditions under which it can be cultured. The effect of salinity on survival was assessed by conducting short-term tolerance studies wherein the effect of abrupt transfer and gradual acclimation to the test salinity levels of 5,10,15,20,25,26.5,28.5,30 and 35 ppt was separately studied. In both abrupt transfer and gradual acclimation, no mortality was observed upto 25 ppt within a period of 120 hrs. The LC50 values for 72 hr and 120 hr were 33.3 ppt and 31.6 ppt for gradual acclimation and 29.85 ppt and 28.18 ppt for abrupt transfer respectively. Acclimation prolonged the survival time of the juvenile in the test salinity levels. The study on the effect of salinity on growth was conducted in cement cisterns, wherein salinity levels from 0-10 ppt with regular increments of 2ppt from treatment to treatment were used. There was no significant difference between treatments upto 6 ppt, but all the levels upto 6ppt differed from 8 and 10 ppt with respect to growth. A field trial to verify the growth pattern in different salinity levels was conducted in one fresh water pond and two brackish water ponds having different salinity levels. The growth rate of the prawns was almost equal in both the fresh water pond (0.119 g/day) and the pond with lower salinity levels (0.126 g/day), whereas it was much lower in the high saline pond (0.063 g/day). The survival rate obtained in the high saline pond (58%) was comparable to fresh water (59%) showing that prawns could survive upto a salinity of 20ppt , although the growth rate is lower in higher salinity levels. Studies were conducted to evaluate the effect of salinity on oxygen consumption, ammonia excretion and O:N ratios of M.rosenbergii within the test salinity levels of 0-10 ppt. Oxygen consumption and ammonia excretion were found to be strongly influenced by the wet weight of the juveniles, but the influence of salinity on these physiological indices were not significant within the test levels used in this study. However, a trend of an increase in oxygen consumption and decrease in ammonia excretion towards the lower salinity levels was observed. Oxygen to nitrogen ratios were found to be lower in the higher salinity levels indicating an increase in protein catabolism in such salinity levels. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Thampy D M (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/handle/1/5810084941 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810084941&fileid=7bff09fb-9edd-42ac-8f43-a4392684c5cb |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Koha item type | Theses |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
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| KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2014-03-18 | 639.2 VEN/EF | 170572 | 2014-03-18 | 2014-03-18 | Theses |