棱鮻寄生小钩鲻鱼虫的种群生态学  

Population ecology of Ligophorus hamulosus on Liza carinatus

作　　者：李建军[1] 杨廷宝[1] 刘继芳[2] 刘升发[3] 

机构地区：[1]中山大学生命科学学院,广东广州510275 [2]广州市农业技术推广中心,广东广州510520 [3]厦门大学寄生动物研究室,福建厦门361005

出　　处：《海洋环境科学》2009年第2期131-133,共3页Marine Environmental Science

基　　金：国家自然科学基金(39870144);广东省自然科学基金(980314)

摘　　要：棱鮻（Lizacarinatus）样品于2000年12月～2001年10月取自广东湛江。按常规方法从鱼鳃上挑取小钩鲻鱼虫（Ligophorushamulosus），进行压片、计数。结果显示：随着宿主体长的增长，小钩鲻鱼虫种群的平均密度、平均感染强度呈上升趋势；从12月到次年4月，其平均密度和平均感染强度上升，随后呈下降趋势，8月最低，10月略有回升；小钩鲻鱼虫种群在不同大小的宿主上和在不同季节均呈聚集分布。Ligophorus hamulosus was collected from the gills of Liza carinatus, which were captured in Zhanjiang, Guangdong Province from Dec, 2000 to Nov. 2001. The routine Parasitology methods were adopted in the study. The results showed that the abundance and the mean intensity of L. hamulosus population were increased with the increase of body length. From Dec. towards next Apr. the abundance and the mean intensity was increased, and afterwards they declined the lowest in Aug. but in Oct. they were increased slightly. The prevalence seemed to be decreased with the increase of the mean water temperature. The frequency distribution and the population parameters of L. hamulosus showed that the parasite populations in the host population group were over-dispersed for different body length and in different seasons.

关 键 词：小钩鲻鱼虫 棱鮻 种群生态学 

分 类 号：S941.521[农业科学—水产养殖]