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Reduction in Chaetoceros populations by furanace

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BaticadosMCL1977.pdf (200.3Kb) Open Access
Downloads: 335
Date
1977
Author
Baticados, Ma. Cecilia L.
Gacutan, R. Q.
Page views
3,249
ASFA keyword
crustacean culture ASFA
disease control ASFA
AGROVOC keyword
Penaeus monodon AGROVOC
Taxonomic term
Penaeus monodon GBIF
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Abstract
One of the most promising prophylactic agents being tested to control Penaeus monodon larval diseases is furanace (6-hydroxymethyl-2 2(5-nitro-2-furyl) vinyl pyridine). To evaluate further its suitability as a chemotherapeutic agent, its effects on the population growth of Chaetoceros calcitrans, the diatom used as feed for the zoeal stages, was examined. Chaetoceros populations of uniform density (initial density in all runs: 130-141x10 -3 cells /ml) were placed in nine white, circular (382 sq cm), plastic basins. The physio-chemical characteristics of the culture water were as follows: salinity, 28 . 5-30 . 0 ppt; pH, 8 . 62-8 . 72; temperature, 23-25 . 5 degree C; dissolved oxygen, 7 . 1-9 . 3 ppm; nitrate, 0 . 03-0 . 07 ppm; and ammonia, 0 . 005-0 . 03 ppm. Preweighed furanace granules were dissolved in the culture water, with resulting concentrations of 1 and 2 mg/l (3 replicates each). A set of replicates without furanace served as the control. Population counts of the diatom were taken after 2, 4, 6, 8, and 10 hr exposures. After 4 hr, the population decreased in all three levels. The population in 2 mg/l furanace showed the lowest count and that in control the highest. The population means are not statistically different from one another. The results of the study show that the furanace causes reductions in Chaetoceros population at all durations of exposure.
Description
Extended abstract only.
URI
http://hdl.handle.net/10862/2283
Suggested Citation
Baticados, M. C. L., & Gacutan, R. Q. (1977). Reduction in Chaetoceros populations by furanace. SEAFDEC Aquaculture Department Quarterly Research Report, 1(1), 36-37. http://hdl.handle.net/10862/2283
Type
Article
Collections
  • Quarterly Research Reports [125]


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