基于支持向量机的仓储害虫声音识别

对于仓储害虫的种类识别问题,提出了一种根据害虫产生的声音来进行基于支持向量机的识别算法．利用已知害虫的声音样本,经过语音预处理、特征提取,用所提取的语音特征向量构造多个支持向量机(SVMs)．在识别应用中,在无法看到害虫的情况下,利用传感器采集到的害虫声音样本,预处理之后,利用训练好的支持向量机来判断是什么害虫,从而采取合适的灭虫措施．     

Enhanced production of aggregation pheromones in four stored-product coleopterans feeding on methoprene-treated oats

Summary Production of aggregation pheromones by maleOryzaephilus surinamensis, O. mercator, Cryptolestes ferrugineus, andTribolium castaneum was enhanced by feeding on methoprene-treated oats, implicating juvenile hormone in control of pheromone production. Methoprene application to control insects in stored food products may cause enhanced pheromone production by these insects, thus drawing additional beetles into the treated product.Acknowledgments. We thank Dr. G. B. Staal of Zoëcon Corp. for a generous gift of methoprene. Particular thanks are due to J. Dodic for technical assistance. Research funded by the Natural Sciences and Engineering Research Council of Canada and the Science Council of British Columbia.