寄生蠕虫的调查与群落分析

INVSTIGATION AND ECOLOGICAL ANALYSES OF HELMINTH COMMUNITY OF LONGYAN,FUJIAN

1992年在福建省龙岩市解剖52只圈养麻鸭,检出寄生蠕虫9种,感染率分别为:鸭对体吸虫3.85%、宫川棘口吸虫3.85％、似椎低颈吸虫1.92％、细背孔吸虫1.92％、分歧单睾绦虫5.77％、美丽膜壳绦虫13.46%、冠双盔绦虫3.85％、鸭瓣口线虫5.77％、裂刺四棱线虫48.08％,总感染率为 61.54％,平均感染强度为11.75条,其中以裂刺四棱线虫最高。该群落中寄生蠕虫分布型有5种为聚集分布,4种为随机分布。优势种为裂刺四棱线虫,辅优势种为美丽膜壳绦虫和分歧单睾绦虫。优势度和感染指数亦以裂刺四棱线虫为最高。群落中的两两种对间显著亲和与正关联的种对有1对(P<0.01),负关联达显著水平的有7对(P<0.05)。

:Nine species of helminths were collected from 52 domestic duck in Longyan,Fujian,1992. The total infectivity was 61. 54%. Helminth recovered as follows:Amphimerus a-natis(3. 85% ),Echinostoma miyagawei(3. 85% ), Hypoderaum conoideum(1.92% ),Notocotylus attenuatus(1.92%),Aploparaksis furcigera(5.77%) ,Hymenolepis venusta(13. 46% ),Dicrano-taenia coronula(3. 85% ),Epomidiostomum anatinum(5. 77% ) jTetramers fissispina(48. 08%). The average infection intensity was 11. 74.in which,the infection rates and intensity of Tetramers fissispina was highest. The patterns of distribution of helminth populations of five species were aggragation patterns and four species were random patterns. There were 1 dominant species(T. fissispina) and 2 codominant species (A furcigera and H Venusta)in the community. The in-deis of Bergeparker and infection of T. fissispina 晈ere highest. Anglysis of interspecific association of species pairs showed 1 pair was significiant associattion(0. 01) and 1 pairs were signifi-ciant negative association(p(0.05).