IDENTIFICATION OF SMALL LIVER FLUKE IN DOGS, CAT AND DETERMINATION OF METACERCARIA LARVA IN FRESHWATER FISH SPECIES IN TUYEN QUANG CITY, TUYEN QUANG PROVINCE

Abstract

Small liver fluke is a disease that is transmitted between dogs, cats and humans. This study was conducted to identify the small liver fluke species parasitic in dogs and cats and to identify the larvae of Metacercaria parasitic in freshwater fish species in Tuyen Quang city, Tuyen Quang province. Dissection of 200 dogs and cats identified 16.00% of dogs and 21.33% of cats infected with small liver flukes. Collecting 854 small liver fluke samples, fixed specimens and Carmine staining, observing morphology, structure, measuring size, comparing with the identification key of Nguyen Thi Le (2000) identified Clonorchis sinensis as a disease-causing species for dogs and cats in the Tuyen Quang city, Tuyen Quang province. Testing 100 muscle samples of 05 types of freshwater fish by the method of myolysis combined with decanting sediment and comparing the identification key of Sohn (2009), Phan Thi Van and Bui Ngoc Thanh (2013) found that, 4/5 types of fish infected with Metacercaria larvae, which are: catfish, drifter, carp, carp, with the intensity of infection from 2 to 12 larvae/type of fish.