Impact of weather on off-flavour episodes at a Louisiana commercial catfish farm
Impact of weather on off-flavour episodes at a Louisiana commercial catfish farm
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天气对路易斯安那州商业鲶鱼养殖场异味事件的影响
DOI：
10.1111/j.1365-2109.2008.02132.x
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
P. Zimba
中科院分区：
文献类型：
--
作者：
B. Hurlburt;Suzanne S Brashear;S. Lloyd;C. Grimm;J. Thomson;P. Zimba
猫屎水产养殖业受到影响猫屎及时销售的石油事件的阻碍。在这项研究中，气象数据与21个商业池塘的水样中的土臭素和2-甲基异黄酮（2-MIB）水平相关。每周收集样品，持续44周。采用气相色谱-质谱联用技术对土臭素和2-MIB进行了定量艾德。收集了猫场附近的天气数据，包括最高和最低气温、降雨量、平均风速、最高和最低湿度以及最高和最低土壤温度。土臭素与空气和土壤温度呈弱正相关，与风速呈弱负相关。2-MIB与空气和土壤温度呈强正相关，与风速呈中等负相关，与最大湿度呈弱正相关。降雨量、最低湿度或池塘大小与任一油脂化合物水平之间无二元关系。使用逻辑回归，基于土臭素水平的含油状态的最佳预测因子包括最低土壤温度、降雨量和最低湿度。基于2-MIB水平的最佳预测因子包括最低土壤温度和平均风速。土壤温度和降雨量是影响土壤水分含量的危险因素，而湿度和风速是保护因素。
The cat¢sh aquaculture industry is hampered by oi-£avour events that aiect timely ¢sh sales. In this study, weather data were correlated with geosmin and 2-methylisoborneol (2-MIB) levels in 21commercial pond’s water samples. Samples were collected weekly for 44 weeks. The oi-£avour compounds, geosmin and 2-MIB, were quanti¢ed using gas chromatography^mass spectrometry. Weather data were collected near the cat¢sh farm and included maximum and minimum air temperature, rainfall, average wind velocity, maximum and minimum humidity, and maximum and minimum soil temperature. Geosmin was weakly and positively correlated with air and soil temperatures, and weakly and negatively correlated with wind velocity. 2-MIB was strongly and positively correlated with air and soil temperatures, moderately and negatively correlated with wind velocity, and weakly and positively correlated with maximum humidity. There were no bivariate relationships between rainfall, minimum humidity or pond size, and levels of either oi-£avour compound. Using logistic regression, the best predictors for oi-£avour status based on geosmin levels included minimum soil temperature, rainfall and minimum humidity. The best predictors for oi£avour status based on 2-MIB levels included minimum soil temperature and average wind velocity. Soil temperature and rainfall were risk factors for oi£avour, while humidity and wind velocity were protective factors.