| 额尔齐斯河贝加尔雅罗鱼单殖吸虫群落多样性及感染情况 |
| Biodiversity and Infection Status of Monogenea Parasitizing Leuciscus baicalensis in Irtysh River of China |
| 投稿时间：2020-05-31 修订日期：2021-07-18 |
| DOI：10.15928/j.1674-3075.202005310157 |
| 中文关键词:单殖吸虫 贝加尔雅罗鱼 感染 群落多样性 额尔齐斯河 |
| 英文关键词:Monogenea Leuciscus baicalensis infection status parasite biodiversity Irtysh River |
| 基金项目:国家自然科学基金(31860738，31960737，31160535) ；新疆维吾尔自治区自然科学基金青年基金（2021D01B56） |
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| 中文摘要: |
| 研究贝加尔雅罗鱼(Leuciscus baicalensis)感染的单殖吸虫的群落多样性及感染情况，为额尔齐斯河鱼类寄生虫病防治提供基础资料。2009年8月到2016年7月，剖检贝加尔雅罗鱼296尾，共感染了6种单殖吸虫，分别为号筒指环虫(Dactylogyrus tuba Linstow,1878)、双髻指环虫(D. sphyra Linstow, 1878)、小刺指环虫（D. micracanthus Nybelin,1937）、多小枝指环虫（D. ramulosus Malewitzkaja，1941）、普氏三代虫（Gyrodactylus prostate Erergns，1963）和斯氏拟双身虫（Paradiplozoon skrjabini Achmerov，1974）；贝加尔雅罗鱼单殖吸虫的总感染率为20.27 %，平均感染强度为3.05只/尾(1~18只/尾)，平均感染丰度为(0.62±2)只/尾；混合感染率相对较低，仅占2.36%；各单殖吸虫的感染率均小于10%，平均感染强度均小于5，其中小刺指环虫为优势种；在5个体长段中，在14cm≤L＜16cm体长段感染单殖吸虫的种类、感染率及感染强度均达到最高;体长段之间的多样性指数、优势度指数、均匀度指数及丰富度指数结果相差不大，不同体长段宿主中单殖吸虫种群的分布类型均为聚集分布；体长段14cm≤L＜16cm与16cm≤L感染强度差异显著，其余体长段之间的感染强度差异均不显著。 |
| 英文摘要: |
| In the Irtysh River, Monogenea primarily parasitize the gills of Leuciscus baicalensis. In this study, we characterized the community?structure and infection status of Monogenea parasitizing L. baicalensis in the Chinese section of Irtysh River. The objective was to provide basic data for preventing parasitic diseases in Irtysh River fish. From August 2009 to July 2016, 296 L. baicalensis specimens were collected from the Irtysh River at Beitun, Habahe, Fuhai and 185 Tuan. Total length was measured and the fish were placed into five length classes: L<10cm, 10≤L＜12cm, 12≤L＜14cm, 14cm≤L＜16?cm， L≥16?cm. Monogenea infection in each L. baicalensis sample was recorded after autopsy and L. baicalensis was found to be infected by six Monogenea species: Dactylogyrus micracanthus (Nybelin, 1937), D. tuba (Linstow, 1878), D. sphyra (Linstow, 1878), D. ramulosus (Malewitzkaja, 1941), Gyrodactylus prostate (Erergns, 1963) and Paradiplozoon skrjabini (Achmerov, 1974). The total infection rate of Monogenea in L. baicalensis was 20.27%, average infection intensity was 3.05 (range, 1-18), and the mean infection abundance was （0.62±2）. The mixed infection rate was relatively low (2.36%) and the infection rate by each Monogenea species was <10%, with average infection intensity <5. Among the species, D. micracanthus was the dominant parasite. Maximum species richness, infection rate and infection intensity by Monogenea all occurred in the 14?cm≤L＜16?cm length group of L. baicalensis. The infection intensity varied significantly between the 14?cm≤L＜16?cm and L≥16cm groups, but differences among other groups did not vary significantly. No significant differences among the five body length groups were found for the diversity, dominance, evenness or abundance indices of Monogenea species, and the population of Monogenea exhibited an aggregated distribution in all five L. baicalensis length groups. |
| 郝翠兰,喀迪尔丁·艾尔肯,容梦婕,张文润,穆妮热·喀迪尔,田胜利,岳城.2021.额尔齐斯河贝加尔雅罗鱼单殖吸虫群落多样性及感染情况[J].水生态学杂志,42(4):111-116. |
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