Nagasawa K, Moravec F
National Research Institute of Far Seas Fisheries, Fisheries Agency of Japan, Shizuoka.
J Parasitol. 1995 Feb;81(1):69-75.
Two species of third-stage larvae of the family Anisakidae are described from the Japanese common squid (Todarodes pacificus Steenstrup) from the Sea of Japan. The larvae of 1 of them, Anisakis simplex (Rudolphi, 1809), commonly occur encapsulated in the viscera of squid, whereas those of another 1, identified as Lappetascaris sp., are found free in the mantle musculature. The latter, characterized by the presence of a very long ventricular appendix, a conspicuous esophageal gland, and the structure of the cephalic end (presence of sclerotized supports of lip anlagen), previously were reported by various authors as members of the genera Contracaecum, Thynnascaris, or Hysterothylacium. It appears that the larvae form the mantle of squid belong to a hitherto undescribed Lappetascaris species whose adults parasitize an, as yet unknown, predatory marine fish.
从日本海的日本枪乌贼（Todarodes pacificus Steenstrup）中描述了异尖科的两种第三期幼虫。其中一种幼虫，简单异尖线虫（Anisakis simplex，Rudolphi，1809），通常包裹在枪乌贼的内脏中，而另一种被鉴定为Lappetascaris属的幼虫，则在外套膜肌肉组织中自由存在。后者的特征是有一个非常长的心室附属物、一个明显的食管腺以及头部末端的结构（唇原基有硬化支撑），此前不同作者将其报道为对盲囊线虫属（Contracaecum）、金枪鱼线虫属（Thynnascaris）或后圆线虫属（Hysterothylacium）的成员。似乎来自枪乌贼外套膜的幼虫属于一个迄今未描述的Lappetascaris物种，其成虫寄生于一种尚未知晓的掠食性海洋鱼类。
