Program in Ecology, Evolution, and Conservation Biology, Department of Natural Resources and Environmental Science, University of Nevada-Reno, 1664 Virginia St., Mailstop 0186, Reno, Nevada 89557, USA.
Nevada Department of Wildlife, 6980 Sierra Center Parkway, Suite 120, Reno, Nevada 89511, USA.
J Wildl Dis. 2023 Apr 1;59(2):342-346. doi: 10.7589/JWD-D-22-00067.
Rabbit hemorrhagic disease virus 2 (RHDV2 or Lagovirus GI.2) began circulating in wild lagomorph populations in the US in March 2020. To date, RHDV2 has been confirmed in several species of cottontail rabbits (Sylvilagus spp.) and hares (Lepus spp.) throughout the US. In February 2022, RHDV2 was detected in a pygmy rabbit (Brachylagus idahoensis). Pygmy rabbits are sagebrush obligates that only occur in the US Intermountain West and are a species of special concern due to the continual degradation and fragmentation of sagebrush-steppe landscapes. The spread of RHDV2 into occupied pygmy rabbit sites may pose a significant threat to their populations because of already declining numbers associated with habitat loss and high mortality rates.
兔出血症病毒 2 型（RHDV2 或 Lagovirus GI.2）于 2020 年 3 月开始在美国野生兔科动物群体中传播。迄今为止，RHDV2 已在美国的几种棉尾兔（Sylvilagus spp.）和野兔（Lepus spp.）中得到确认。2022 年 2 月，RHDV2 在侏儒兔（Brachylagus idahoensis）中被检测到。侏儒兔是一种山艾树 obligates，仅在美国山间西部出现，由于山艾树草原景观的持续退化和破碎化，它们是一种特别关注的物种。RHDV2 传播到已占领的侏儒兔栖息地可能对它们的种群构成重大威胁，因为与栖息地丧失和高死亡率相关的数量已经下降。
