北京地区发现喜鹊感染鸡蛔虫
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作者单位:

1 中国科学院动物研究所 北京 100101;2 安徽科技学院 凤阳 233100

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高思潮,男,硕士研究生;研究方向:鸟类人兽共患寄生虫学;E-mail: gaosichao1998@163.com; 胡斌,男,博士研究生;研究方向:鸟类疫病生态学;E-mail: hubin@ioz.ac.cn。

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基金项目:

科技基础资源调查专项,北京市野生动物疫源疫病主动监测和预警项目;


Pica serica Found to Be Infected With Ascaridia galli in Beijing
Author:
Affiliation:

1 Institute of Zoology, Chinese Academy of Sciences, Beijing 100101; 2 Anhui Science and Technology University,Fengyang 233100, China

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    摘要:

    本研究从首都师范大学校园内死亡的喜鹊(Pica serica)肠道中分离出一种线性寄生虫。共剖检11只死亡喜鹊,其中7只体内发现该线虫寄生。通过解剖观察发现,这些死亡的喜鹊肠道中存在着大量长度4 ~ 15 cm的线性寄生虫。随后,利用体视显微镜和扫描电镜观察其形态学特征,并结合COX1基因序列分析其系统发育关系,最终将该寄生虫鉴定为鸡蛔虫(Ascaridia galli)。本研究发现,城市自然环境中的喜鹊存在鸡蛔虫感染现象,这不仅拓宽了对这种鸡蛔虫宿主范围的了解,而且进一步证实城市野生留鸟在维护公共健康方面扮演了重要角色。

    Abstract:

    Wild birds play a significant role in the maintenance and transmission of various zoonotic pathogens. Among them, the Oriental Magpie Pica serica is considered a representative terrestrial wild bird species. Elucidating its role in the transmission of zoonotic pathogens is of particular importance. In this study, deceased Oriental Magpies were collected from the campus of Capital Normal University, and comprehensive morphological and molecular analyses were performed on their intestinal parasitic nematodes. First, necropsies of deceased Oriental Magpies revealed a significant number of cylindrical parasites, measuring 4 to 15 cm in length, in their intestines. A stereoscopic zoom microscope (SZM) and a scanning electron microscope (SEM) were subsequently used to examine the morphological characteristics. Genomic DNA was then extracted from Ascaridia galli, and the cytochrome oxidase subunit I (COX1) gene was amplified via polymerase chain reaction (PCR). Positive clones were sequenced to identify target DNA inserts. The resulting sequences were assembled manually via BioEdit (v7.0.9) and aligned with A. galli reference sequences from GenBank by BLAST. A phylogenetic tree was constructed via the Neighbor-Joining (NJ) method with 1 000 bootstrap replicates in MEGA 9, along with a barcoding gap assessment. The parasite exhibited a three-lipped anterior oral aperture, a visible anus at the tail end, and a vulva anterior to the anus, which suggested that this specimen was female A. galli (Fig. 1). Subsequent phylogenetic analysis indicated that the parasite sequence obtained clustered with reference sequences of A. galli from chicken hosts (Fig. 2), with sequence similarity greater than 90%, conclusively identifying the parasite as A. galli. This study identified A. galli in Oriental Magpies inhabiting urban natural environments, thereby expanding current knowledge of the parasite’s host range and highlighting the important role of wild urban-dwelling birds in public health surveillance.

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高思潮,胡斌,王嘉敏,李高建,韩姝伊,黄妍奕,李文超,何宏轩. 2025.北京地区发现喜鹊感染鸡蛔虫. 动物学杂志, 60(6): 937-942.

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  • 收稿日期:2024-05-16
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  • 在线发布日期: 2025-12-20
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