hat
Li se klè ki sa ki lakòz epidemi nan Drupella, men enpak imen tankou terès run-off, twòp lapèch nan Drupella predatè yo, ak ogmante domaj nan resif ansanm ak kòz natirèl (varyasyon rekritman lar) yo te sijere kòm kòz potansyèl yo. ref Epidemi yo peryodik sijere kèk relasyon ak osilasyon oseyanografik (eg, El Niño osilasyon sid la).
eng
It is unclear what causes outbreaks of Drupella, but human impacts such as terrestrial run-off, overfishing of Drupella predators, and increased reef damage along with natural causes (variable larval recruitment) have been suggested as potential causes. ref The periodic outbreaks suggest some relationship with oceanographic oscillations (e.g., El Niño Southern Oscillation).