摘要
报道了寄生于瓦氏黄颡胆囊中的3种粘孢子虫(四极虫1种,巨囊两极虫和麦穗碘泡虫)感染率的周年动态;感染率与瓦氏黄颡全长间存在显著的直线和抛物线关系;水温对感染率有显著影响.四极虫使宿主的肥满度平均下降10%.指出了四极虫是瓦氏黄颡的严重致病寄生虫.讨论了3种粘孢子虫间存在的生态位分离和竞争.
This paper reports annual dynamics of myxosporidians (Chloromyxum sp., Myxidium macrocapsulare and Myxobolus pseudorasborae ) in gall bladder of Pseu-dobagrus vachelli (Richardson), the relationship between infection rate (I) of the parasites and the total length (L) of the fish, viz., Chloromyxum sp.: I=-86.92+11.18 L-0.25L2, M. macrocapsulare. I =-51.88+7.42 L-0.21 L2, M. pseudorasborae: 1=26.10-1.20 L, and the great influence of water temperature on the infection rate of the parasites, and the influence of Chloromyxum sp. on plumpness of the fish, and reduction of the plumpness ( 10 % in average) being very significant when tested with t-test. There are niche separation and competition between the three myxosporidians.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
1991年第3期373-379,共7页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
瓦氏黄颡
寄生虫
粘孢子虫
鱼类
parasite
myxosporidian .ecology
Pseudobagrus vachelli
