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Potentials of Kappaphycus striatum (Schnitz) and Gracilaria heteroclada Zhang (Ad Xia) to control the growth of luminous bacteria Vibrio harveyi

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Date
2010
Author
Tendencia, Eleonor
de la Peña, Milagros R.
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Abstract
Different aquaculture species such as finfishes and bivalves have been reported to control the luminous bacterial disease of shrimp, usually caused by Vibrio harveyi. The use of seaweeds in shrimp culture system has reportedly improved water quality and reduced the bacterial count. This study evaluated the potentials of two species of seaweeds, Gracilaria heteroclada (Ad Xia) and Kappaphycus striatum (Schnitz), to control the growth of V. harveyi.

V. harveyi was inoculated into control tanks containing shrimps only and into treated tanks containing both shrimp and macroalgae. Luminous bacterial counts were monitored daily. From day 2 to day 6, luminous bacterial count in tanks with G. heteroclada was significantly lower than those in tanks with K. striatum. Bacteria isolated from the rearing water containing K. striatum and G. heteroclada and from the seaweed homogenized in sterile seawater showed anti-Vibrio harveyi activity. The seaweed homogenate per se also showed anti-luminous bacterial property. Presence of both G. heteroclada and K. striatum in shrimp culture system has the potential to control the growth of luminous bacteria. G. heteroclada was more efficient and sustainable, as shown by the lower luminous bacterial count and the higher percentage recovery of this macroalga after 11 d in experimental tanks.
URI
http://hdl.handle.net/10862/2111
Suggested Citation
Tendencia, E., & de la Peña, M. R. (2010). Potentials of Kappaphycus striatum (Schnitz) and Gracilaria heteroclada Zhang (Ad Xia) to control the growth of luminous bacteria Vibrio harveyi. The Philippine Agricultural Scientist, 93(1), 109-115. http://hdl.handle.net/10862/2111
Subject
aquaculture; bacterial diseases; biological control; disease control; laboratory culture; luminous organisms; polyculture (aquaculture); seaweed culture; seaweeds; shrimp culture; Gracilaria heteroclada; Philippines, Panay I., Iloilo; Penaeus monodon
Taxonomic term
Penaeus monodon; Kappaphycus striatus; Vibrio harveyi
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  • AQD Journal Articles [1248]

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