| 寄生于瓦氏黄颡的掘凿鳋的种群周年动态 |
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| 引用本文： | 张其中. 寄生于瓦氏黄颡的掘凿鳋的种群周年动态[J]. 西南师范大学学报(自然科学版), 2004, 29(4): 702-704 |
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| 作者姓名： | 张其中 |
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| 作者单位： | 西南师范大学,生命科学学院,重庆,400715;暨南大学,水生生物研究所,广东,广州,510632 |
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| 基金项目： | 重庆市应用基础资助项目(20005992). |
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| 摘 要： | 研究了涪江合川江段的瓦氏黄颡鳃上的寄生甲壳动物———掘凿鳋的种群周年动态.该鳋的频率在宿主种群中呈负二项分布,其繁殖期为3月下旬至11月中旬,感染率和丰盛度表现出显著的周年变化,春末夏初变化最大.
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| 关 键 词： | 寄生桡足类 掘凿鳋 种群动态 瓦氏黄颡 |
| 文章编号： | 1000-5471(2004)04-0702-03 |
| 修稿时间： | 2003-12-01 |
Seasonal Population Dynamics of Ergasilus scalaris Mark.,1940 on Gills of Pelteobagrus vachelli |
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| ZHANG Qi-zhong. Seasonal Population Dynamics of Ergasilus scalaris Mark.,1940 on Gills of Pelteobagrus vachelli[J]. Journal of southwest china normal university(natural science edition), 2004, 29(4): 702-704 |
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| Authors: | ZHANG Qi-zhong |
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| Affiliation: | ZHANG Qi-zhong~ |
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| Abstract: | The population of the copepod, Ergasilus scalaris Mark., 1940 parasitic on gills of the fish, Pelteobagrus vachelli, was investigated during one year cycle (12 months) in the Fujiang River of Hechuan County, China. Sample size was at least 15 in each month, and the total specimens collected were at 214 for the fish. The frequency distribution of E. scalaris in their host population can be fitted well with negative binomial distribution. Reproduction of the copepod occurs from Spring through late Autumn. Prevalence and abundance of the parasite exhibit a pattern of seasonal changes with higher levels observed in late Spring and early Summer. |
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| Keywords: | parasitic copepod Ergasilus scalaris population dynamics Pelteobagrus vachelli |
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