Myxidium rhodei Leger, 1905 (Cnidaria, Myxosporea): Age-Related, Seasonal, and Spatial Dynamics and Long-Term Survey of Common Roach Rutilus rutilus Infection in Chivirkuy Bay of Lake Baikal
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引用次数: 0
Abstract
The myxosporean Myxidium rhodei Leger, 1905 is a common parasite of Palaearctic cyprinids localized primarily in the Bowman capsules of fish kidneys. In Lake Baikal, roach Rutilus rutilus has been infected with myxosporidium M. rhodei at a high prevalence (94–100%) and intensity of invasion (up to 6000 pseudocysts) in 1999–2021. In this work, we analyzed the age-related, seasonal, long-term dynamics and the spatial distribution of M. rhodei infestation of roaches in Chivirkuy Bay of Lake Baikal. The parasite begins to be registered in yearlings, then the intensity of invasion of roach M. rhodei increases, reaching a maximum in middle-aged fish, and decreases in older fish. M. rhodei has an annual development cycle in roaches. Fluctuations in the infection of M. rhodei in the studied fish over 25 years of observation correlate with long-term changes in the hydrological regime of Lake Baikal.
AbstractThe myxosporean Myxidium rhodei Leger, 1905 is a common parasite of Palaearctic cyprinids locally in the Bowman capsules of fish kidney.1999-2021 年间，贝加尔湖中的鲤科鱼 Rutilus Rutilus 感染了菱形肌孢子虫，感染率（94%-100%）和侵袭强度（多达 6000 个假囊肿）都很高。在这项工作中，我们分析了贝加尔湖奇维尔库伊湾蟑螂的啮齿目圆线虫感染的年龄相关性、季节性、长期动态和空间分布。这种寄生虫开始出现在一岁幼鱼身上，然后蟑螂蝠鲼的侵袭强度增加，在中年鱼身上达到最大，在老年鱼身上则有所减少。罗氏蝠鲼在蟑螂体内的发育周期为一年。在 25 年的观察中，研究鱼类感染罗氏蟑螂的波动与贝加尔湖水文系统的长期变化相关。
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