| 草鱼鳃上台湾棘带吸虫囊蚴内种群的月变化 |
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| 引用本文： | 曾伯平,廖翔华.草鱼鳃上台湾棘带吸虫囊蚴内种群的月变化[J].水生生物学报,2000,24(2):137-142. |
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| 作者姓名： | 曾伯平 廖翔华 |
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| 作者单位： | 1. 湘潭师范学院生物系,湘潭 411201
2. 中山大学生物系,广州 510275 |
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| 基金项目： | 国家自然科学基金项目(编号:39370123),本文为博士毕业论文的一部分 |
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| 摘 要： | 通过对草鱼鳃上台湾棘带吸虫囊蚴内种群１２个月的周期性研究，发现草鱼的感染率范围为６２．１％－１００％，感染强度范围为８．７－２２．９，囊蚴的平均密度范围为６．７－２１．４；感染率、感染强度及平均密度三项指标与水温的周期性季节变化关系不明显；囊蚴在草鱼鳃上的分布呈聚集分布，且聚集的强度随囊蚴内种群密度的增高而增高；不同组鳃叶其囊蚴的分布具有相似的月变化规律。
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| 关 键 词： | 草鱼 鳃 台湾棘带吸虫 囊蚴内种群 |
| 文章编号： | 1000-3207(2000)02-0137-06 |
| 修稿时间： | 1998年5月9日 |
MONTHLY CHANGES OF THE METACERCARIAL CYST INFRAPOPULATION OF CENTROCESTUS FORMOSANUS (NISHIGORI, 1924) ON THE GILLS OF GRASS CARPS CTENOPHARYNGODON IDELLUS. |
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| ZENG Bo-ping and LIAO Xiang-hua.MONTHLY CHANGES OF THE METACERCARIAL CYST INFRAPOPULATION OF CENTROCESTUS FORMOSANUS (NISHIGORI, 1924) ON THE GILLS OF GRASS CARPS CTENOPHARYNGODON IDELLUS.[J].Acta Hydrobiologica Sinica,2000,24(2):137-142. |
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| Authors: | ZENG Bo-ping and LIAO Xiang-hua |
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| Abstract: | The prevalence, mean intensity, relative density, abundance and dispersion of the metacercariae of Centrocestus formosanus (Trematoda: Heterophyidae) was studied on gills of grass carps Ctenopharyngodon idellus from August 1993 to June 1994. The prevalence varied from 62.1% to 100%, and the mean intensity 8.7 to 22.9, the relative density 6.7 to 21.4. The prevalence and mean intensity, relative density were not obviously correlated with the seasonal change of water temperature.The distribution of the metacercariae on the gills was overdispersed. The degree of aggregation increased with the increasing mean density of the cyst infrapopulation The distribution of the metacercarial cysts on the gills showed regular monthly changes with different gill lamellae. |
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| Keywords: | Grass carp Gill Centrocestus formosanus Metacercarial cyst infrapopulation |
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