Disease investigation of transported Chanos chanos stocked in Laguna Lake, Philippines
MetadataShow full item record
Milkfish,Chanos chanos fingerlings transported by boat (petuya) for seven to eight hours were observed for stress-inducing factors during transport, daily for 10 days after stocking in pens in Laguna Lake, Philippines. Handling, hauling, and crowding of fish contributed to stressful conditions. Likewise, the transport procedure of the clising the water entry hole at the bottom of the boat to block water exchange was associated with decreased dissolved oxygen and increase tubidity, with respective values of 2.4 mg/l and 79 Formalin Turbidity Units when water change was possible. In addition , marked and abrupy fluctuations in salinity from 15 to 30 ppt then 0 ppt within 1 to 3 hr were observed during transport. Although moralities during transport were minimal, subseqeunt deaths after stocking in pens mounted to not less than 2.4%. Reddish snout, scale loss and hemorrhagic areas along the lateral body surface wwere observed. Bacterial counts of water increased significantly during trasnport when water exchange was stopped. Kidney and skin/muscle specimens yielded significantly higher bacterial counts on days 2, 3, 5 and 8 poststocking predominated by Aeromonas hydrophila biovar hydrophila and two species of gram-negative bacilli phenotypically resembling Pseudomonas sp.
Showing items related by title, author, creator and subject.
Small-scale freshwater aquaculture development: Experiences from the Philippines on giant freshwater prawn, milkfish and tilapia Aya, Frolan (Japan International Cooperation Agency, 2013-12)The Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC/AQD) has been promoting a number of programs towards effective dissemination and adoption of science-based aquaculture technologies ...
Resistance to antibiotics of Vibrio spp. and Aeromonas spp. isolated from fish and shrimp tissues and rearing water in Panay island, Philippines Leaño, Eduardo M.; Inglis, Valerie B. M.; Macrae, Ian H. (University of the Philippines Visayas, 1998)A survey on the resistance patterns to selected antibiotics of bacterial pathogens of fish and shrimps in Panay Island, Philippines was conducted. One hundred and sixteen (116) bacterial isolates were collected from fish ...
Development and characterization of nine novel microsatellite markers for the milkfish Chanos chanos Santos, Brian S.; Romana-Eguia, Maria Rowena R.; Basiao, Zubaida U.; Ikeda, Minoru (Springer Verlag, 2015)The milkfish, Chanos chanos, is an important aquaculture resource in Southeast Asia. Using NGS data, 72 microsatellite markers were developed. PCR product confirmation using agarose gel electrophoresis allowed the ...