The problems of Leucothrix infestation in penaeid hatchery

Palanisamy V., . and Faazaz Abd Latiff, . (1992) The problems of Leucothrix infestation in penaeid hatchery. [Proceedings Paper]

Observations on water supply Penaeus monodon broodstock tanks larval and algal cultures were carried out to monitor the problem of infestation by Leucothrix sp. a filamentous bacterium. It was found to be present in the sea water throughout the year. Intensity of infestation was related to silty water conditions and higher temperature. It is because of its ubiquitous nature all water supply system was affected by its presence i.e. sand filter-bed inner surface of pipes tanks and containers that are always in contact with water. Infestations was seen on gills and thelycum of newly moulted female broodstock. Infestation resulted in poor spawning fecundation and hatching. Larval rearings were affected by moulting leading to high mortality. Infestation in algal culture resulted in poor quality of algae and mortality at lag-phase. Although prophylactic treatments by antibiotics or chemicals hygienic precautions and effective filtration could control the bacterial infestation to some extent in hatchery the problem of infestation could not be completely eliminated and lead to occasional failures in larvicultures

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Abstract

Observations on water supply Penaeus monodon broodstock tanks larval and algal cultures were carried out to monitor the problem of infestation by Leucothrix sp. a filamentous bacterium. It was found to be present in the sea water throughout the year. Intensity of infestation was related to silty water conditions and higher temperature. It is because of its ubiquitous nature all water supply system was affected by its presence i.e. sand filter-bed inner surface of pipes tanks and containers that are always in contact with water. Infestations was seen on gills and thelycum of newly moulted female broodstock. Infestation resulted in poor spawning fecundation and hatching. Larval rearings were affected by moulting leading to high mortality. Infestation in algal culture resulted in poor quality of algae and mortality at lag-phase. Although prophylactic treatments by antibiotics or chemicals hygienic precautions and effective filtration could control the bacterial infestation to some extent in hatchery the problem of infestation could not be completely eliminated and lead to occasional failures in larvicultures

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Item Type:	Proceedings Paper
Additional Information:	Summary En Ms
AGROVOC Term:	PENAEUS MONODON
AGROVOC Term:	LOCAL PARA INCUBACION
AGROVOC Term:	BACTERIOSIS
AGROVOC Term:	INFESTACION/ BACTERIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15224

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