98-101 years Jia Yunnan region aquatic animal disease outbreak investigation and analysis

• Main Authors: LU yen-ling, 盧彥伶
• Other Authors: Che-Chun Chen
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/41782070985030648121

碩士 === 國立嘉義大學 === 水生生物科學系研究所 === 101 === Summary In this study, 2009 to 2012 years Chiayi regional aquatic animal cases and field quality inspection questionnaires, analyze common aquatic animal disease outbreaks, and to explore climate change and disease association. According to the study results showed that: diseases, water quality and temperature changes are highly relevant. Analysis showed that the average temperature of 19 ℃ or more, the number of cases began to increase censorship; average temperature above 25 ℃, then enter the aquatic animals at high risk of disease, especially in January when the temperature reached more than 6 ℃, the month and the second 1-2 months, the number of cases jumped. In addition, changes in water quality ponds was positively correlated with rainfall, from May to September rainy season tolerance and rebound and is protected by the typhoon, water quality and water quality management consulting test number increased significantly. The study also found that: bacterial disease is common in high-temperature phase, parasitic diseases common in low temperature and seasonal changes. In addition some species have higher for certain infectious pathogens, such as Lates calcarifer and Gyrodactylus spp, Sciaenops ocellatus with Amyloodiniasis, tilapia and mullet with streptococcus, largemouth bass and Nocardia infection problem. Period for water quality management of climate variability, low pressure, hot weather or temperature rises rapidly, it is recommended to stop feeding or reduced meal feeding, such as oxygen equipment and strengthen waterwheel with water treatment agent can effectively prevent water malignancy; rainy season, use lime or water quality improving agent can stabilize water quality, changes in pH balance in the pool. Besides strengthening the entire pool bottom arrange, creating a low pathogenic environment can reduce the outbreak.