Hyposmotic Treatment for Control of the Parasitic Copepod, Alella macrotrachelus on the Gill of Cultured Black Porgy
Year: 2006
Type: article
Abstract: The objective of this study was to develop an efficient control method for the Alella macrotrachelus parasitic cultured black porgy, Acanthopagrus schlegeli utilizing the superior osmoregulatory ability of the host fish. The average number of the parasites on a fish was 5 worms (all female), which were attached to the cartilage of gill filament by their bulla. Morphologically, the parasite was tripartite with each length of 1822.1±521.5 ㎛ for the trunk, 1825.0±495.8 ㎛ for the cephalothorax, and 134.2±43.1 for the bulla. In histological observations, it was found that the female parasite took gill lamellae. Damage and loss of gill lamellae by the parasite caused hemorrhage and anemia in the fish. All parasites died within 48 hours by osmotic shock of freshwater or 5~15‰ seawater treatment. These results suggest that Alella macrotrachelus could be controled by hyposmotic treatment.
Source: 韓國養殖學會誌 = Journal of aquaculture
Language: English
Subfield: Parasitology
Field: Immunology and Microbiology
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W1593692014