Adult male lobsters exposed to 0.06, 0.5, and 5 µg L−1 azamethiphos (formulated as Salmosan®) for one hour, repeated five times, over 48 h.
Inhibition of muscle cholinesterase activity detected in lobsters exposed to 0.5 and 5 µg L−1 azamethiphos.
The 5 µg L−1 dose was considered lethal (93% cumulative mortality).
Significant changes in hemolymph plasma biochemistry were most apparent in the 5 µg L−1 exposure group in the immediate post-exposure samples.
Citrate synthase activity was significantly lower in muscles of the 0.5 µg L−1 exposure group compared to control lobsters.