Barnard D R
J Med Entomol. 1989 Jul;26(4):372-4. doi: 10.1093/jmedent/26.4.372.
The extended feeding time response on cattle of adult lone star ticks, Amblyomma americanum (L.), during November through December is facultative and is mediated by the female. Mean feeding time (11.8 d) in female ticks taken from the field and held at 14:10 (L:D) photoperiod and 25 degrees C for greater than or equal to 15 d was significantly shorter (P = 0.05) than for females taken directly from the field and fed on cattle (14.6 d). Mean feeding times of females from the field paired to males from the field, males from the field held for 30 d at 14:10 (L:D) and 10 degrees C, or males from the field held for 30 d at 14:10 (L:D) and 25 degrees C were not significantly different (15.7, 16.3, and 16.2 d, respectively). When males from the field were paired with females from the field that had been held at 14:10 (L:D) and 10 degrees C or 14:10 (L:D) and 25 degrees C for 30 d, mean feeding time of the females was significantly longer (17.2 d) or shorter (14.0 d), respectively, than for all other groups.
11月至12月期间，成年美洲钝眼蜱（Amblyomma americanum (L.)）对牛的延长取食时间反应是兼性的，且由雌性介导。从野外采集并在14:10（光照:黑暗）光周期和25摄氏度条件下饲养15天及以上的雌性蜱的平均取食时间（11.8天）显著短于（P = 0.05）直接从野外采集并以牛为宿主的雌性蜱（14.6天）。从野外采集的雌性蜱与从野外采集的雄性蜱配对、在14:10（光照:黑暗）和10摄氏度条件下饲养30天的野外雄性蜱、或在14:10（光照:黑暗）和25摄氏度条件下饲养30天的野外雄性蜱的平均取食时间无显著差异（分别为15.7、16.3和16.2天）。当野外雄性蜱与在14:10（光照:黑暗）和10摄氏度或14:10（光照:黑暗）和25摄氏度条件下饲养30天的野外雌性蜱配对时，雌性蜱的平均取食时间分别显著长于（17.2天）或短于（14.0天）所有其他组。
