On behavioral pattern and molluscicidal effect of commiphora molmol (myrrh)‎ in comparison with bayluscide against melanoides tuberculata snail (thiaridae)‎, in Abbasa, Egypt

Abstract EN

Myrrh is an herbal product that has been used since ancient ages for traditional medication and other purposes.

The revolution of myrrh as an antiparasitic agent in Egypt began in the 1990s through scientific evidence-based research.

Current results indicates a considerable potency of Myrrh of plant origin as a molluscicide with LC50 and LC90 values equal to 37 and 75 ppm against M.

tuberculata.

Also Niclosamide was the most effective compound with LC50 and LC90 values of 0.22 and 0.35 ppm against M.

tuberculata.

The snails showed several behavioral responses,after exposure to ethanolic extract of Myrrh, including, Swelling of the tissues; restricted to the tentacles, but involved the whole cephalopodal mass; accumulated water and hemorrhage at lethal concentration of the active plant extracts, Preventing its normal osmo-regulatory function.

In respect to Niclosamide application, the majority of M.

tuberculata snails, withdrawn into their shell on the first 24 hrs, were found to be dead at the end of the experiment.

No survivors at concentrations higher than 0.30 mg / l.

The water leaving behavior observed only in three individuals of M.

tuberculata which showing a low capacity to escape from Niclosamide action, or even retract in the first 24 hrs.

All M.

tuberculata individuals died when exposed to niclosamide concentrations higher than 0.35 mg / l, with the exception of one mollusc, which survived to the 0.4 mg / l concentration.