在美国San Joaquin Valley,红圆蚧每年发生四代,发育零点为53F,完成一代的积温为1100日度。雌蚧能产生一种性外激素以吸引雄蚧。诱集雄蚧可以监测红圆蚧的整个种群,由此得出了一种方法用来确定害虫种群生活史中的生物学基点(biofix point)。生物学基点是害虫个体生活史内的某个基准时期,可用作预测后续的发育期。雄蚧羽化始期和高蜂期,是两个有用的生物学基点。采用生活史中的这些基准点,后续的羽化始期 At the San Joaquin Valley in the United States, four generations occur each month and the developmental zero point is 53F. The cumulative temperature of the completed generation is 1100 days. The female scale can produce a sex hormone to attract the male scale. Trapping the male ticks can monitor the entire population of red ticks, thus arriving at a method for determining the biofix point in the pest population’s life history. The base point of biology is a reference period within the individual life history of the pest and can be used as a prediction of subsequent developmental stages. The male gecko eclosion period and the high bee period are two useful biological basis points. Using these reference points in the life history, the subsequent emergence of feathers