| 西藏黑斑原鮡消化道寄生蠕虫的分布类型及种间关系 |
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| 引用本文： | 潘瑛子,付佩佩,王且鲁,周建设,牟振波,胡光冉.西藏黑斑原鮡消化道寄生蠕虫的分布类型及种间关系[J].中国水产科学,2021,28(2):231-238. |
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| 作者姓名： | 潘瑛子 付佩佩 王且鲁 周建设 牟振波 胡光冉 |
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| 作者单位： | 西藏自治区农牧科学院水产科学研究所, 西藏土著鱼类繁育与利用技术工程研究中心, 西藏 拉萨 850032;中国科学院水生生物研究所, 农业农村部水产养殖病害防控重点实验室, 淡水生态与生物技术国家重点实验室,湖北 武汉 430072 ；中国科学院大学, 北京 100049 |
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| 基金项目： | 西藏自治区重点研发及转化项目. |
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| 摘 要： | 黑斑原鮡(Glyptosternum maculatum)是中国唯一的原鮡属鱼类, 在中国仅分布于西藏的雅鲁藏布江。在 2019 年 5—8 月对 383 尾黑斑原鮡消化道寄生蠕虫种类调查鉴定的基础上, 对其感染数量的频率分布进行了统计, 并分别用方差均值比和 X2 检验、共感染频率统计等方法对各寄生蠕虫种群的空间分布类型及消化道寄生蠕虫群落的种间关系进行了分析和判定。结果显示, 深槽绦虫未定种(Bathybothrium sp.)、原头绦虫未定种(Proteocephalus sp.)和杆咽线虫未定种(Rhabdochona sp.)的分布模式为均匀分布; 异肉吸虫未定种(Allocreadium sp.)、新棘吻虫未定种 (Neoechinorhynchus sp.)、裸鲤棘头虫(Echinorhynchus gymnocyprii)和 Contracaecum eudyptulae 呈聚集分布。异肉吸虫未定种与裸鲤棘头虫、新棘吻虫未定种与深槽绦虫未定种、新棘吻虫未定种与原头绦虫未定种、新棘吻虫未定种与异肉吸虫未定种, 以及新棘吻虫未定种与杆咽线虫未定种间均为正关联; 裸鲤棘头虫与异肉吸虫未定种间为负关联; 其他寄生蠕虫物种两两之间不存在相互关联。共感染频率分布显示被感染的宿主多数只感染 1 种寄生虫, 同时感染 2 种以上寄生虫的宿主约占被感染宿主群体的 1/3, 其中, 共感染的最大物种数为 4 种, 但频率只为 1, 以 2 种物种共同感染的情况居多。
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| 关 键 词： | 黑斑原鮡 消化道寄生蠕虫 频率分布 分布类型 种间关系 西藏 |
Distribution patterns and interspecific relationships of gastrointestinal helminths in Glyptosternum maculatum from Tibet |
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| PAN Yingzi,FU Peipei,WANG Qielu,ZHOU Jianshe,MU Zhenbo,HU Guangran.Distribution patterns and interspecific relationships of gastrointestinal helminths in Glyptosternum maculatum from Tibet[J].Journal of Fishery Sciences of China,2021,28(2):231-238. |
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| Authors: | PAN Yingzi FU Peipei WANG Qielu ZHOU Jianshe MU Zhenbo HU Guangran |
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| Abstract: | Glyptosternum maculatum is a cold-water fish species adapted to plateau environments, belonging to the family Sisoridae within the order Siluriformes. Comprising only three recognized species, Glyptosternum is the most primitive genus of sisorid catfishes. G. maculatum are uniquely endemic to the Yarlung Tsangpo (Brahmaputra) river system and the surrounding waters in China and India. Based on the investigation and identification of gastrointestinal helminths in 383 individuals of G. maculatum from May to August 2019, a total of seven parasitic worms were collected, including two species of tapeworms, Bathybothrium sp. and Proteocephalus sp.; two species of acanthocephalans, Neoechinorhynchus sp. and Echinorhynchus gymnocyprii; two species of nematodes, Contracaecum eudyptulae and Rhabdochona sp.; and one species of digenea, an Allocreadium sp. Likewise, the frequency distribution of the number of gastrointestinal helminths was analyzed; distribution patterns were determined from the variance mean ratio, and the interspecific relationships were analyzed using X 2 -test and co-infection frequency statistics, respectively. Our results showed that the frequency of single infection was the highest among the seven gastrointestinal helminths of G. maculatum, and the frequency of more than five parasites in one host was greatly reduced. The distribution patterns of Bathybothrium sp., Proteocephalus sp., and Rhabdochona sp. were regular, whereas the distribution of Allocreadium sp., Neoechinorhynchus sp., E. gymnocyprii, and Contracaecum sp. was aggregated. There was a positive correlation between Neoechinorhynchus sp. and Bathybothrium sp., Neoechinorhynchus sp. and Proteocephalus sp., Neoechinorhynchus sp. and Allocreadium sp., and Rhabdochona sp. and Neoechinorhynchus sp., as well as a negative correlation between E. gymnocyprii and Allocreadium sp. There was no correlation between the two species of other gastrointestinal helminths. The frequency distribution of gastrointestinal helminth co-infection in G. maculatum showed that most of the infected hosts were only infected with one parasite, with hosts infected with more than two kinds of parasites accounting for only one-third of the infected host group. Among them, the maximum number of co-infection species was four; however, there was only one such instance, and most hosts were co-infected by two species. The results of this study help us to further understand the population characteristics and community characteristics of gastrointestinal helminths in G. maculatum and provide support for the ecological control of helminthiasis in native fishes in Tibet. |
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