scholarly journals Antimicrobial activity of chitosan against vibrios from freshwater prawn Macrobrachium rosenbergii larval rearing systems

2005 ◽  
Vol 67 ◽  
pp. 177-179 ◽  
Author(s):  
A Anas ◽  
S Paul ◽  
NS Jayaprakash ◽  
R Philip ◽  
IS Bright Singh
Keyword(s):  
Antimicrobial Activity ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Larval Rearing

Bacterial flora associated with larval rearing of the giant freshwater prawn, Macrobrachium rosenbergii

Aquaculture ◽  
2002 ◽  
Vol 203 (3-4) ◽  
pp. 279-291 ◽  
Author(s):  
P.V. Phatarpekar ◽  
V.D. Kenkre ◽  
R.A. Sreepada ◽  
U.M. Desai ◽  
C.T. Achuthankutty
Keyword(s):  
Bacterial Flora ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Larval Rearing ◽  
Giant Freshwater Prawn

scholarly journals PRELIMINARY STUDY ON THE EFFECT OF VITAMIN C ON THE GROWTH AND SURVIVAL RATE OF THE FRESHWATER PRAWN (Macrobrachium rosenbergii) LARVAE

2008 ◽  
Vol 3 (1) ◽  
pp. 41
Author(s):  
Ikhsan Khasani
Keyword(s):  
Statistical Analysis ◽  
Survival Rate ◽  
Vitamin C ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Larval Rearing ◽  
Growth And Survival ◽  
Artemia Nauplii ◽  
Randomized Design ◽  
Preliminary Study

This experiment was conducted to investigate the influence of vitamin C on growth and survival rate of freshwater prawn larvae. The treatment dosages of vitamin C were 0.0, and 0.75 mg/L. Each treatment was in triplicates and arranged in a complete randomized design. Vitamin C was given to the larval rearing media every three days. Larvae were cultured in six conical fibreglass tanks of 50 L volume installed in a fibreglass tank (2 m x 0.8 m x 0.8 m) filled with water for temperature stabilizer. Each conical tank was stocked with 6,500 larvae (nauplii). Artemia nauplii were given on D3 and egg custard as artificial feed on D9. Larval rearing was done for 25 days in constant temperature (29oC–31oC) using automatic heater. Statistical analysis showed that metamorphosis speed of larvae was significantly affected by adding of vitamin C (P<0.05), but survival rate was similar (P>0.05). Addition of vitamin C also resulted in a better growth of freshwater prawn larvae.

scholarly journals Bacterial flora associated with the selected life stages and organs of farmed giant freshwater prawn Macrobrachium rosenbergii (de Man)

2016 ◽  
Vol 8 (4) ◽  
pp. 2087-2092
Author(s):  
Laxmi Prasad ◽  
B. B. Nayak ◽  
A. K. Reddy
Keyword(s):  
Bacterial Flora ◽  
Macrobrachium Rosenbergii ◽  
Enterobacter Aerogenes ◽  
Freshwater Prawn ◽  
Plate Count ◽  
Larval Rearing ◽  
Life Stages ◽  
Giant Freshwater Prawn ◽  
Gram Positive Bacteria ◽  
De Man

Bacteria associated with different life stages of giant freshwater prawn (Macrobrachium rosenbergii de Man) were analyzed. The gill, hepatopancreas, haemolymph of brood and juveniles as well as the egg, larvae and larval rearing water were sampled to understand the quantity and the quality of bacteria associated with the animals.A total number of 93 representative isolates were identified. The identified bacterial isolates could be distributed in to 14 genera. A mean bacterial total plate count (TPC) of 4.5x105 colony forming units (cfu) g-1 in eggs, 6.0x106 cfu g-1 in larvae and 4.6x105 cfu ml-1 in water were observed. Among all the organs highest TPC of 3.5x107 cfu g-1 were observed in juvenile’s gills. The brood haemolymph was found to be devoid of any bacteria. Identification of isolates representing different colony morphotype indicated that 89.77% of the bacterial population was gram negative dominated by Aeromonas hydrophilla (16.74%), Enterobacter aerogenes (12.09%) and Citrobacter frundii (10.16%). Among Gram-positive bacteria Bacillus, Streptococcus and Micrococcus were identified. Study of quantitative and qualitative aspects of bacterial prevalence with the different life stages of M. rosenbergii would be helpful in identification of disease causing bacteria and therefore in better management of M.rosenbergii culture.

scholarly journals Evaluation of different diets to replace Artemia nauplii for larval rearing of giant freshwater prawn (Macrobrachium rosenbergii)

2018 ◽  
Vol 17 (03) ◽  
pp. 35-43
Author(s):  
Nhan T Dinh
Keyword(s):  
Larval Stage ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Control Treatment ◽  
Future Research ◽  
Feeding Strategies ◽  
Larval Rearing ◽  
Artificial Diets ◽  
Artemia Nauplii ◽  
Artemia Cysts

A study was conducted on Macrobrachium rosenbergii larvae to evaluate the efficiency of different diets to replace Artemia nauplii in the feeding scheme. The study included two experiments performed at pilot scale in 12-L tanks using a recirculating system. Larval stocking density was 100 larvae/L. After 7 days of feeding by Artemia nauplii, different diets, included wet and dry diets and decapsulated Artemia cysts, were tested to replace Artemia nauplii. An extra treatment using only decapsulated Artemia cysts throughout the complete larval rearing was also included. The results showed that feeding larvae exclusively decapsulated cysts for the complete rearing cycle was not appropriate. When gradually replacing up to 50% of the Artemia nauplii ration with wet or dry diets, good results in terms of growth, survival and quality of the larvae were obtained, similar to the control treatment receiving only Artemia nauplii. However, abruptly replacing 50% of the Artemia nauplii ration with artificial diets negatively affected larval development. Weaning could start from larval stage V, with about 25% of the Artemia nauplii replaced with artificial diet. Subsequently, the weaning ration could be increased up to 50% from stage IX to postlarva stage. Artificial diets should be provided in different particle size ranges based on the larval stage, gradually increasing from 250 to 1000 μm from stage V to postlarva stage. The results obtained in the present study may aid future research and serve as a baseline for further optimization of feeding strategies in prawn larviculture.

scholarly journals IDENTIFICATION OF VIBRIO BACTERIA CAUSED VIBRIOSIS ON FRESHWATER PRAWN LARVAE (Macrobrachium rosenbergii (de Man))

2016 ◽  
Vol 20 (2) ◽  
pp. 53 ◽  
Author(s):  
Ni Wayan Desi Bintari ◽  
Retno Kawuri ◽  
A. A. Gde Raka Dalem
Keyword(s):  
Vibrio Anguillarum ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Limiting Factor ◽  
Larval Rearing ◽  
Test Results ◽  
Bacteriological Study ◽  
Larval Production ◽  
Ninth Edition ◽  
De Man

Freshwater prawn (Macrobrachium rosenbergii (de Man)) farming in Bali needs to be supported by the provisionof healthy prawn larvae. Vibriosis infection can be a limiting factor on larval production system which cause highmass mortality in larvae. Therefore a bacteriological study is very important to identify of Vibrio species whichcan cause vibriosis in freshwater prawn larvae. Screening of Vibrio bacteria carried on larval rearing water atUPT Pembenihan Dinas Kelautan dan Perikanan Provinsi Bali which located in Pesinggahan Village, Klungkung.During study, 5 Vibrio isolates can be characterized (VSP01, VSP02, VSP04, VSP05 and VSP06) which wereisolated as dominant Vibrio bacteria in larval rearing water. Koch postulate test results showed that VSP06 cancause vibriosis in freshwater prawn larvae. The result of identification by BBL Cystal™ Identification Systems andidentification book Bergeys’s Manual of Determinative Bacteriology Ninth Edition (Holt et al., 1994), BL6 wasidentified as Vibrio anguillarum.

Sign in / Sign up

Export Citation Format

Share Document