Incorvaia I S, Díaz de Astarloa J M
Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina.
Bol Chil Parasitol. 1998 Jan-Jun;53(1-2):38-42.
The present paper deals with a preliminary study of different larvae of nematoda found in two species of fish Paralichthys orbignyanus and Paralichthys patagonicus. In P. orbignyanus the genus Terranova type A was found. Both Anisakis type I and Hysterothylacium were present in P. patagonicus. Different types of larvae belonging to genera Terranova (B and B'), Contracaecum (A and B) and Raphidascaris occurred in both P. patagonicus and P. orbignyanus. The specimens of Nematoda were described and the corresponding morphometric indexes were determined. The abundance of Nematoda obtained in relation to the diet of the flounders led us to conclude that P. orbignyanus feeds basically on crabs and fish, while P. patagonicus has a more diverse diet.
本文对在两种鱼类——奥氏牙鲆（Paralichthys orbignyanus）和巴塔哥尼亚牙鲆（Paralichthys patagonicus）中发现的不同线虫幼虫进行了初步研究。在奥氏牙鲆中发现了A型异尖线虫属（Terranova）。在巴塔哥尼亚牙鲆中同时存在Ⅰ型异尖线虫属（Anisakis）和对盲囊线虫属（Hysterothylacium）。巴塔哥尼亚牙鲆和奥氏牙鲆中都出现了属于异尖线虫属（B和B'型）、对盲囊线虫属（A和B型）和蛔形线虫属（Raphidascaris）的不同类型幼虫。对这些线虫标本进行了描述并测定了相应的形态学指标。根据牙鲆饮食中获得的线虫丰度，我们得出结论，奥氏牙鲆主要以螃蟹和鱼类为食，而巴塔哥尼亚牙鲆的饮食更为多样。
