近海鱼类异尖科幼线虫形态分类学研究——Ⅱ.北部湾部分

在对从北部湾捕获海鱼的异尖科(Anisakidae)幼线虫感染状况进行初步调查的基础上,作了形态分类学研究。共检海鱼29种,134只标本,其中简单异尖线虫3期幼虫的感染率达30.6％,且大部分阳性鱼种的感染率在50％以上。此外尚检获宫脂线虫(Hysterothylacium)属3期幼虫2型:C_1型和C_5型,其中C_1型为初次报告。另检出伪新地蛔线虫(Pseudoterranova)属幼虫1型。

MORPHOLOGICAL AND TAXONOMICAL STUDIES ON ANISAKIDAE LARVAE FOUND IN MARINE FISHES OF CHINA II. GULF OF TONG KING

A survey on Anisakidae larvae in 29 species(134 specimens) of marine fishes in the Gulf of Tong King has been carried out.Anisakidae larvae were detected in 15 out of 29 species.The detected specimens were identified as larvae of Anisakis simplex,Hysterothylacium and Pseudoterranova.The parasitization rate of Anisakis simplex larvae,the main pathogen of anisakiasis,in fishes was 30.6% (41/134),while the parasitization rates of Hysterothylacium and Pseudoterranova larvae were comparatively low.Hysterothylacium larvae China type I detected from Muraenesox clnereus and Trichiurus Tiaumela was a new record.Their morphological characteristics were summarized as follows: 1.Length 10.78-14.18mm,Width 0.25-0.38mm,the length of the esophagus is 1.14-1.73mm,intestinal cecum 0.77-1.24mm and ventricular appendage 6.27-8.40mm,extending parallelly with the intestine to the last quarter of the larva; 2.Boring tooth was present,but mucron was absent; 3.No genital anlage was observed.