Department of Entomology, Pennsylvania State University, University Park, PA.
Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA.
J Med Entomol. 2021 Jul 16;58(4):1962-1965. doi: 10.1093/jme/tjab043.
In October 2020, three captive male white-tailed deer, Odocoileus virginianus [Zimmermann] (artiodactyla: Cervidae), were found dead in central Pennsylvania and a fourth was euthanized due to extreme lethargy. The deer presented with high burdens of Dermacentor albipictus (Packard) (Ixoda: Ixodidae) (winter tick). There were no other clinical symptoms and deer were in otherwise good physical condition with no observed alopecia. Winter tick epizootics have been associated with mortalities of moose, Alces alces [Linnaeus] (artiodactyla: cervidae), and more recently elk, Cervus canadensis [Erxleben] (artiodactyla: cervidae), in Pennsylvania, but have not been reported in white-tailed deer. Mild winters are favorable to winter ticks and deer producers and managers should be aware of possible infestations as a result.
2020 年 10 月，在宾夕法尼亚州中部发现 3 只死亡的圈养雄性白尾鹿（Odocoileus virginianus [Zimmermann]）（偶蹄目：鹿科），另有 1 只因极度嗜睡而被安乐死。这些鹿身上寄生着大量的白纹鹿蜱（Dermacentor albipictus （Packard））（硬蜱目：硬蜱科）（冬季蜱）。没有其他临床症状，而且这些鹿的身体状况良好，没有观察到脱毛。冬季蜱流行曾与驼鹿（Moose，Alces alces [Linnaeus]）（偶蹄目：鹿科）和最近的麋鹿（Elk，Cervus canadensis [Erxleben]）（偶蹄目：鹿科）在宾夕法尼亚州的死亡有关，但在白尾鹿中尚未报告。温和的冬季有利于冬季蜱的生长，因此鹿的饲养者和管理者应该注意可能发生的感染。
