Infection and effect of neem (Azadirachta indica) extract on sea lice (Caligus spp.) parasites on rabbitfish (Siganus guttatus)
Vol. 132 No. 3A (2023), Original Article
Vol. 132 No. 3A (2023)

Infection and effect of neem (Azadirachta indica) extract on sea lice (Caligus spp.) parasites on rabbitfish (Siganus guttatus)

Original Article
https://doi.org/10.26459/hueunijard.v132i3A.6962
Published 2023-04-18
Truong Thi Hoa
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Tran Nam Ha
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Nguyen Thi Anh Tu
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
PDF (Vietnamese)

Keywords

Azadirachta indica
rabbitfish
Siganus guttatus
sea lice
effective cá dìa
cây sầu đâu
mức độ nhiễm
rận cá Caligus spp.

Abstract

The study was conducted on 120 fish collected from two sites over six months. The neem leaf and seed extract at 0, 10, 50, 100, 500, and 1000 ppm was used to evaluate its effect on sea lice. The infection rate of sea lice on rabbitfish was 66.7%, and infection intensity averaged 20.3 sea lice/fish. The infection intensity was higher in January, February, and March than in April, May, and June. After 30 hours of experiment, the EC50 and EC90 of leaf extract were 148 and 928 ppm and of seed extract were 62 and 397 ppm.

https://doi.org/10.26459/hueunijard.v132i3A.6962
PDF (Vietnamese)

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