ACETYLCHOLINESTERASE ACTIVITY AND TOTAL HAEMOCYTE COUNT IN BLACK TIGER SHRIMPS (PENAEUS MONODON) EXPOSED TO TRIFLURALIN AT THERAPEUTIC LEVELS FOR ECTOPARASITIC TREATMENT

Authors

Phanupong Chaowanit
Apirak Pleanplak
Rujira Sangarun
Lila Ruangpan
Janenuj Wongtavatchai
Piyarat Chansiripornchai

Abstract

Trifluralin, a herbicide, was observed for it's side effects when used, extralabel, as an ectoparasiticide in shrimp farming. Black tiger shrimp were exposed to trifluralin at a therapeutic level, commonly employed in shrimp farming, 0.1 or 0.2 ppm, for up to 96 hrs. Shrimp were examined 96 hrs after the primary dosage of trifluralin. The total haemocyte count in the exposed shrimp was not different from the control, unexposed shrimp. A significant reduction of muscle acetylcholinesterase was found in all exposed shrimp (p<0.05). Some of the exposed shrimp also demonstrated clinical signs of cholinergic overload characterized as abnormal movement. This study suggests sublethal effects when trifluralin is used for the treatment of shrimp ectoparasitic disease.

DOI

10.56808/2985-1130.1963

First Page

91

Last Page

97

Recommended Citation

Chaowanit, Phanupong; Pleanplak, Apirak; Sangarun, Rujira; Ruangpan, Lila; Wongtavatchai, Janenuj; and Chansiripornchai, Piyarat (2004) "ACETYLCHOLINESTERASE ACTIVITY AND TOTAL HAEMOCYTE COUNT IN BLACK TIGER SHRIMPS (PENAEUS MONODON) EXPOSED TO TRIFLURALIN AT THERAPEUTIC LEVELS FOR ECTOPARASITIC TREATMENT," The Thai Journal of Veterinary Medicine: Vol. 34: Iss. 1, Article 14.
DOI: https://doi.org/10.56808/2985-1130.1963
Available at: https://digital.car.chula.ac.th/tjvm/vol34/iss1/14