Open AccessThe Toxicity of Erythromycin, Minocycline, Malachite Green, and Formalin to Nauplii of the Shrimp Penaeus stylirostris
Author(s) -
Castille Frank L.,
Lawrence Addison L.
Publication year - 1986
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1986.tb00548.x
Subject(s) - minocycline , malachite green , biology , shrimp , erythromycin , metamorphosis , toxicity , bioassay , penaeus , toxicology , pharmacology , microbiology and biotechnology , zoology , larva , antibiotics , fishery , medicine , ecology , chemistry , organic chemistry , adsorption
The toxicities of erythromycin, minocycline, malachite green, and formalin to nauplii of the shrimp Penaeus stylirostris were determined in a static bioassay. Toxicity was assessed on the basis of survival of nauplii after 12 and 24 hours of exposure to the compounds and metamorphosis of the nauplii to protozwa. The results suggested that metamorphosis to protozoea is more susceptible to toxic effects than is naupliar survival. Metamorphosis was either reduced or completely inhibited by lower concentrations of erythromycin, minocycline, and malachite green than was naupliar survival at 12 or 24 hours. Metamorphosis was either reduced or completely inhibited by erythromycin, minocycline, malachite green, and formalin concentrations of 80, 100, 0.08, and 27 mg/ L, respectively. Toxic effects were not observed at erythromycin, minocycline, malachite green, and formalin concentrations of 16, 62.5, 0.016, and 2.7 mg/L, respectively. The results suggest that formalin may be toxic at therapeutic levels frequently recommended for post larvae and older penaeids, but that erythromycin, minocycline and malachite green are not.