Approximately 60% of sites where the Kidneyshell was found historically are now infested with Zebra Mussels. ###>Environ 60 % des sites oÃ¹ lâEUR(TM)on trouvait auparavant des ptychobranches rÃ©niformes sont dÃ©sormais infestÃ©s de moules zÃ©brÃ©es.