Bacterial microbiota of hatchery-reared freshwater prawn Macrobrachium rosenbergii (de Man 1879)

R. V. Pakingking Jr., . and Cruz-Lacierda E. R., . and Traifalgar R. F., . and Añasco N. C., . and Monghit-Camarin M. A., . and Austin F. W., . and Cuvin-Aralar M. L., . and Lawrence M. L., . Bacterial microbiota of hatchery-reared freshwater prawn Macrobrachium rosenbergii (de Man 1879). pp. 241-248. ISSN 0116-6514

Quantitative and qualitative analyses of bacterial microbiota associated with hatchery of freshwater prawn Macrobrachium rosenbergii (de Man 1879) were conducted over three larval cycles along with important water quality parameters. Physicochemical parameters (temperature DO salinity pH and total ammonia) of culture water were within the optimum level required for the hatchery phase of M. rosenbergii. Aerobic plate count (APC) (log10 CFU.mL-1 ) ranged from 4.2 0.18“8.7 0.01 in rearing water and (log10 CFU.g-1 ) 3.3 0.12“9.1 1.1 in eggs and larvae. Significant differences in APCs among larval stages were observed. Ten genera and 17 species were identified with the predominance of Gram-negative bacteria constituting 63 of all isolates (n 706). Acinetobacter baumannii Acinetobacter lwoffii Chryseobacterium indologenes Enterobacter aerogenes Enterobacter cloacae Vibrio furnissii Vibrio cholerae non-01 Plesiomonas shigelloides Pseudomonas aeruginosa Pseudomonas pseudoalcaligenes Bacillus cereus Staphylococcus haemolyticus Staphylococcus warneri and Staphylococcus xylosus were predominantly present in culture water. These bacteria likewise dominated in eggs and larvae except for the absence of Ps. aeruginosa Ps. pseudoalcaligenes V. cholerae non-01 Staphylococcus epidermidis and Staph. xylosus in eggs clearly indicating that resident bacteria in water affect the composition of bacteria in eggs and larvae. Some of these are opportunistic pathogens. Thus control measures to reduce influx of pathogenic microbes in the system by maintaining good water quality and good farm management practices through disinfection of culture facilities rearing water Artemia cysts the practice of good hygiene of personnel regular water exchange and feed regulation among others and cautionary use of antibiotics can be adopted.

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Abstract

Quantitative and qualitative analyses of bacterial microbiota associated with hatchery of freshwater prawn Macrobrachium rosenbergii (de Man 1879) were conducted over three larval cycles along with important water quality parameters. Physicochemical parameters (temperature DO salinity pH and total ammonia) of culture water were within the optimum level required for the hatchery phase of M. rosenbergii. Aerobic plate count (APC) (log10 CFU.mL-1 ) ranged from 4.2 0.18“8.7 0.01 in rearing water and (log10 CFU.g-1 ) 3.3 0.12“9.1 1.1 in eggs and larvae. Significant differences in APCs among larval stages were observed. Ten genera and 17 species were identified with the predominance of Gram-negative bacteria constituting 63 of all isolates (n 706). Acinetobacter baumannii Acinetobacter lwoffii Chryseobacterium indologenes Enterobacter aerogenes Enterobacter cloacae Vibrio furnissii Vibrio cholerae non-01 Plesiomonas shigelloides Pseudomonas aeruginosa Pseudomonas pseudoalcaligenes Bacillus cereus Staphylococcus haemolyticus Staphylococcus warneri and Staphylococcus xylosus were predominantly present in culture water. These bacteria likewise dominated in eggs and larvae except for the absence of Ps. aeruginosa Ps. pseudoalcaligenes V. cholerae non-01 Staphylococcus epidermidis and Staph. xylosus in eggs clearly indicating that resident bacteria in water affect the composition of bacteria in eggs and larvae. Some of these are opportunistic pathogens. Thus control measures to reduce influx of pathogenic microbes in the system by maintaining good water quality and good farm management practices through disinfection of culture facilities rearing water Artemia cysts the practice of good hygiene of personnel regular water exchange and feed regulation among others and cautionary use of antibiotics can be adopted.

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Item Type:	Article
AGROVOC Term:	Macrobrachium rosenbergii
AGROVOC Term:	Freshwater prawns and shrimps
AGROVOC Term:	Water quality
AGROVOC Term:	Water temperature
AGROVOC Term:	Dissolved oxygen
AGROVOC Term:	Salinity
AGROVOC Term:	Ammonia
AGROVOC Term:	Bacterial counting
AGROVOC Term:	Identification
AGROVOC Term:	Isolation
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9293

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