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草鱼生长与台湾棘带吸虫囊蚴内种群的关系
引用本文:曾伯平,廖翔华.草鱼生长与台湾棘带吸虫囊蚴内种群的关系[J].动物学报,1998,44(2):144-149.
作者姓名:曾伯平  廖翔华
作者单位:1. 湘潭师范学院生物学系,湖南湘潭,411201
2. 中山大学生命科学学院,广州,510275
基金项目:中国科学院资助项目,39370123,
摘    要:通过对草鱼鳃上台湾棘带吸虫囊蚴内种群的研究发现,随着草鱼的生长。其感染率,下蚴的平均密度都下降,其感染强度也呈下降的的趋势;草鱼鳃上囊蚴的频率分布,表明有大量的囊蚴寄生于少数草鱼鳃上,多数草鱼感染少量的囊蚴;囊蚴在草鱼不同组鳃片上的分布具有相同的变化规律;

关 键 词:草鱼  生长  台湾棘带吸虫  囊蚴内种群

RELATIONSHIP BETWEEN THE GROWTH OF GRASS CARPS CTENOPHARYNGODON IDELLUS AND THE METACERCARIAL CYST INFRAPOPULATION OF CENTROCESTUS FORMOSANUS
ZENG Bai-Ping,LIAO Xiang-Hua.RELATIONSHIP BETWEEN THE GROWTH OF GRASS CARPS CTENOPHARYNGODON IDELLUS AND THE METACERCARIAL CYST INFRAPOPULATION OF CENTROCESTUS FORMOSANUS[J].Acta Zoologica Sinica,1998,44(2):144-149.
Authors:ZENG Bai-Ping  LIAO Xiang-Hua
Abstract:The present paper deals with the metacercarial cyst infrapopulation of Centrocestus formosanus (Trematoda: Heterophyidae) in the gills of different sizes (body length) of grass carps Ctenopharyngodon idellus. The results indicated that the prevalence, relative density and mean intensity of infection were negatively correlated with the body length of the host grass carps. The shorter the body length, the higher the prevalence,and vice versa,and so were the mean intensity and relative density. The frequency distribution of metacercarial cysts in the gills of grass carps showed that a large number of cysts existed in a small number of grass carps,and most grass carps were infected with less cysts. The distribution of the cysts on the gills showed the same regular changes with different gill lamellae. The distribution of the metacercariae in the gills of grass carps of different body length showed aggregated distribution,but the degree of aggregation declined with the mean density of the metacercarial cyst infrapopulation.
Keywords:Grass carp  Growth    Centrocestus  formosanus    Metacercarial  cyst infrapopulation
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