Thành phần và mức độ nhiễm sán lá đơn chủ (<i>Monogenea</i>) ký sinh ở cá diếc (<i>Carassius auratus auratus</i> (Linnaeus, 1758)) thu tại Phú Yên

Abstract

     A total of 201 specimens of crucian carp (Carassius auratus auratus (Linnaeus, 1758)), including 64 from swamp Bau Sung (Tuy An District), 55 from Ky Lo River (Tuy An District) and 82 from freshwater fish ponds (Hoa Xuan Dong-Dong Hoa District) of Phu Yen Province were used for studying of the compositions, prevalences and intensities of Monogeneans. Results showed that, crucian carp in Phu Yen was infected with 6 Monogenean species, including Dactylogyrus anchoratus (Dojardin, 1845) Wagener, 1857, Dactylogyrus formosus Kulwieć, 1927, Dactylogyrus intermedius Wegener, 1909, Dactylogyrus vastator Nybelin, 1924, Gyrodactylus hronosus Zitnan, 1964, and Eudiplozoon nipponicum (Goto, 1891)). Of which, fish collected from Bau Sung Swamp was infected with 6 Monogenean species, fish from Ky Lo River was infected with 5 Monogenean species (not infected with D. anchoratus), fish from freshwater fish ponds was infected with 4 Monogenean species (not infected with D. anchoratus and E. nipponicum). The prevalences and intensities are highest on fish from freshwater fish ponds, while they were not much different between fish collected from Bau Sung Swamp and Ky Lo River.

Key words: Crucian carp, Monogenean infection intensity, Monogenean infection prevalence, Phu Yen Province