红鳍原鲌鳃部寄生单殖吸虫的种群研究
POPULATIONS OF MONOGENEANS ON GILLS OF CULTERICHTHYS ERYTHROPTERUS
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摘要: 单殖吸虫的感染率和丰盛度表现出明显的季节变化.三种指环虫的丰盛度高峰依次出现在4、6、8月.单殖吸虫对寄生部位的选择性与种群数量有关,时间生态位的分离,正是种间竞争的结果.Abstract: The population biology of the monogeneans, Dactylogyrus chenminjungae, D. curvicirrus and D. montshadskyi parasitic on gills of Culterichthys erythropterus, from Honghu Lake in Hubei province, are being studied. Prevalence and abandance of the monogeneans show a pattern of seasonal alternation. The abundance of the three species are high in April, June and August respectively. The selectivity of parasitic sites is in relation to the population size, while the seperation of the ecological niche may be resulted from the interspecific competition.
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Keywords:
- Monogenean /
- Culterichthys eeythropterus /
- Parasite population.
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