A Study on the Changes in Vibrio in Larval Rearing Tanks During the Larval Cycle

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dc.contributor.authorNagarajah, V.
dc.date.accessioned2021-03-19T10:11:57Z
dc.date.available2021-03-19T10:11:57Z
dc.date.issued2012
dc.description.abstractVibriosis is one of the major disease problems in shrimp aqua culture. It is a bacterial disease caused by Vibrio species and distributed in culture facilities throughout the world and is responsible for mortality of cultured shrimp. Vibrio related infections frequently occur in hatcheries, but epizootics also commonly occur in pond reared shrimp species. This study was conducted to find out the effect of Vibrio bacteria on larvae length. Initially stages of the shrimp fry identified. Then tanks, which were, contain same stages. For my I selected 10 tanks for, get the samples. Objective of this study is to find out the effect of Vibrio bacteria on the length of larvae. Water was considered as the source of Vibrio in the hatchery. Water was taken, diluted and then inoculated to the T.C.B.S cholera medium to grow the Vibrio colonies. At the same time larvae was taken and measured their average length. I used around 20 larvae to measure the average weight. Vibrio colonies were found in yellow color. Normally colonies formed after 24 hours of the inoculation. For one tank I prepared 3 petri dish mediums to get average Vibrio count for certain tank. Finally results were analyzed using Minitab software to find out the effect. According the Minitab regression analyzes Vibrio count effect on length of larvae in negative manner in all the stages. When increase the Vibrio count in the water in lead to decrease the length of larvae.en_US
dc.identifier.otherUWU/ANS/08/0041
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/6144/UWULD%20ANS%2008%200041-09042019094019.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.relation.ispartofseries;UWU/ANS/08/0041
dc.subjectAnimal Science Degree Programmeen_US
dc.titleA Study on the Changes in Vibrio in Larval Rearing Tanks During the Larval Cycleen_US
dc.title.alternativeResearch Article – ANS 2012en_US
dc.typeThesisen_US
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