New Record of Third-Stage Larvae of Hysterothylacium aduncum (Nematoda: Anisakidae) from Neomysis intermedia (Crustacea: Mysidae) in a Freshwater Lake in Hokkaido, Japan

Abstract

Neomysis intermedia (Mysidacea) and Thermocyclops sp. (Copepoda) were examined as possible intermediate hosts for Hysterothylacium aduncum in a freshwater lake, Hokkaido, and only the former was found infected (infection rate 0.49 %). The nematode is described and identified as third-stage larva of H. aduncum. The life cycle of H. aduncum in the lake is discussed. © 1987, The Japanese Society of Fisheries Science. All rights reserved.