Thestudyiscarriedoutontheeffectofdrillingnoiseandvibrationongrowthofgrasscarp,MyloparyngodonPiceus,byusingcut-finmarkingmethodinsitu.Comparedwithothermethods,themethodismoreappropriate,foritsoperationissimplerandmoredatamaybeobtainedunderthesamecondition.Theresultsshowthatdrillingnoiseandvibrationhavesignificanteffectonthegrowthofgrasscarp.Criticalequivalentnoiseandvibrationgrade(NleqandVleq)areabout84.4dBand90.2dB,andtheaffectingradiusisabout8.5m.Theeffectofdrillingnoiseandvibrationcouldbeinfluencedbysomefactors,suchasdurationofpollutionandbodyweightofgrasscarp,etc.Grasscarp′sgrowthcouldrapidlyrecoverafterremovingdrillingnoiseandvibration,indicatingthatthedrillingnoiseandvibrationdonotdamagethefishorgansandtheeffectisreversible.Therefore,theeffectmechanismmaybeduetotheactivatingresponseofnon-hearingsystem.
