Geographical distribution and seasonality of the prevalence of leucocytozoon lovati in Japanese rock ptarmigans (Lagopus mutus japonicus) found in the alpine regions of Japan
Geographical distribution and seasonality of the prevalence of leucocytozoon lovati in Japanese rock ptarmigans (Lagopus mutus japonicus) found in the alpine regions of Japan
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DOI：
10.1292/jvms.69.171
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发表时间：
2007-02-01
影响因子：
1.2
通讯作者：
Asakawa, Mitsuhiko
中科院分区：
文献类型：
--
作者：
Murata, Koichi;Tamada, Asumi;Asakawa, Mitsuhiko
在这项研究中，我们调查了日本岩雷鸟（Lagopus mutus）的洛氏白细胞虫感染的地理分布和季节性，这种鸟是日本的一个特殊的自然古迹，居住在日本的高山地区。从2002年到2005年，我们对在久比木、希达和赤石山脉捕获的鸟类的血液样本进行了检查。本研究使用了来自42只雄性、19只雌性和12只性别不明的鸟类的73份血液样本。L.在73只鸡中，Lovati阳性率为78.1%。我们证明了L. lovati感染分布在从北方到南方高山地带的大范围雷鸟种群中。患病率没有性别偏见。L. lovati和血细胞的寄生水平从春季到夏季趋于增加;相反，从夏季到秋季观察到减少。虽然L.在居住在三个山区的一些当地人群中观察到Lovati感染，在Mt.上念岳和前庄南公园因此，有必要继续调查雷鸟的种群动态和节肢动物媒介的密度之间的关系，从就地保护这一濒危物种的角度。
In this study, we investigated the geographical distribution and seasonality of Leucocytozoon lovati infection in the Japanese rock ptarmigan (Lagopus mutus japonicus); this bird is one of the special natural monuments of Japan that inhabits the Japanese alpine regions. We examined blood samples from birds captured in the Kubiki, Hida, and Akaishi mountain ranges for three years from 2002 to 2005. Seventy-three blood samples from 42 males, 19 females, and 12 birds of unknown sex were used for this study. The rate of infection with L. lovati was 78.1% in the 73 birds examined. We demonstrated that the L. lovati infection was distributed across wide ranges of ptarmigan populations from the northern to the southern alpine zones. There was no sex bias in the prevalence ratio. The prevalence of L. lovati and the level of parasitization of the blood cells tended to increase from spring through summer; in contrast, a decrease was observed from summer through autumn. Although L. lovati infection was observed in a number of local populations inhabiting three mountainous regions, no infected birds were found in Mt. Johnen-dake and Mt. Maejohnen-dake. It is necessary to continue surveying the relationship between the population dynamics of the ptarmigan and the density of the arthropod vector from the perspective of in situ conservation of this endangered species.