| 刘彦君,魏念文,穆妮热.喀迪尔,冯龙基,岳城,郝翠兰.2023.额尔齐斯河流域湖拟鲤寄生指环虫——中国分布新记录种十字花指环虫.动物学杂志,58(4):579-589. |
| 额尔齐斯河流域湖拟鲤寄生指环虫——中国分布新记录种十字花指环虫 |
| Dactylogyrus crucifer, A New Record From Rutilus rutilus lacustris in Irtysh River, China |
| 投稿时间：2022-11-10 |
| DOI：10.13859/j.cjz.202304010 |
| 中文关键词: 额尔齐斯河 湖拟鲤 指环虫 分布新记录种 |
| 英文关键词:Irtysh River Rutilus rutilus lacustris Dactylogyridae New record species |
| 基金项目:新疆维吾尔自治区自然科学基金项目(No. 2021D01B56)，2022年新疆农业大学研究生科研创新计划项目(No. XJAUGRI2022007)； |
|
| 摘要点击次数: 62 |
| 全文下载次数: 743 |
| 中文摘要: |
| 2021年7月在额尔齐斯河哈巴河河段于湖拟鲤(Rutilus rutilus lacustris)鳃部发现有指环虫寄生。进行形态比较，发现其形态与国内记载寄生于湖拟鲤的指环虫差异明显：本研究采集虫体的交接管基部膨大呈“8”字形，随后管径均匀，延伸呈弯曲状，形似“6”形；中央大钩内突长超过外突长，背连接片呈“一”字型且中部弯曲，腹联结片呈蝶形。与已报道指环虫形态数据比较，本研究采集的虫体偏小，其后吸器与Dactylogyrus caballeroi的形态最为接近，但交接器不同；与其余指环虫相比，十字花指环虫(D. crucifer)的腹联结片呈蝶形，而极小指环虫(D. rarissimus)呈倒“T”字型，湖拟鲤指环虫(D. rutili)呈“十”字型，双髻指环虫(D. sphyrna)和维氏指环虫(D. vistulae)没有腹联结片。在背联结片形态中，十字花指环虫(D. crucifer)呈现“一”字型，而维氏指环虫呈“V”字型。本研究所采集的虫体结构特征明显不同于国内已记载寄生在湖拟鲤上的双髻指环虫、维氏指环虫和湖拟鲤指环虫，而与俄罗斯记载的寄生于湖拟鲤鳃部的十字花指环虫形态高度相似。28S rDNA基因比对结果与形态鉴定结果基本一致。综合鉴定结果，最终鉴定该虫为指环虫属十字花指环虫。经查阅文献后，确定该虫为中国分布新记录种。 |
| 英文摘要: |
| [Objectives] This paper reported a new geographical record of the genus Dactylogyrus on the gills of Rutilus rutilus lacustris from Irtysh River (Haba River section) investigation of fish parasites in July 2021. [Methods] Based on careful morphological comparison with those relevant species, significant differences in the copulatory complex and the opisthaptor of the parasite were observed. [Results] In copulatory complex, the parasite has an “8” structure at the base of the tube. Then the diameter of the tube is uniform. The tube extended in a curved shape resembling “6”. About the opisthaptor, the parasite’s inner root of anchor was longer than the length of the outer root, with seven pairs of small marginal hooks. And this Dactylogyrus hasthe “一”-shaped dorsal bar and a butterfly-shaped ventral bar (Fig. 1, 2). The characteristic structure of this parasite differs from other Dactylogyrus that parasitic Rutilus rutiluslacustris in China (Appendix 2). The parasite in this study is small. Compared with D. caballeroi, the morphology of the opisthaptor of the two insects was most similar, but the morphology of the copulatory complex of the two was very different. In comparison with the rest of Dactylogyrus spp, the parasite has a butterfly-shaped ventral bar, D. rarissimus has an inverted “T”-shaped ventral bar, and D. rutili has a “十”-shaped ventral bar. However, D. sphyrna and D. varius have no ventral bar. In the dorsal bar morphology, D. crucifer showed a “一”-shape, while the dorsal bar of D. varius had a “V” shape. After comparison, the morphology of the parasite was highly similar to that of D. crucifer, recorded in Russia. The Bayesian inference and maximum likelihood trees constructed based on the 28S rDNA gene fragments showed that the D. crucifer in this study clustered with D. crucifer in Czech Republic (100/100) (Fig. 3). [Conclusion] The results were combined and the insect was identified as D. crucifer Wagener, 1857, a new record species of Dactylogyrus in China. |
| 附件 |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
