The Crown-of-Thorns starfish Acanthaster planci (Linne') in Ceylon
1972
De Bruin, G.H.P.
The Crown-of-Thorns starfish Acanthaster planci is a predator of coral and has been responsible for the widespread destruction of coral reefs. In Sri Lanka this starfish was first reported by Clarke in 1915. Recently skin-divers reported that Acanthaster planci was present in very large numbers in the coastal waters off Trincomalee, especially on the coral formations around Pigeon Island. It is well known that the multiplication of the starfish to plague proportions is a serious threat to the coral reef formations round the Island. If it were allowed to continue its depredations the entire coral reef belt round the Island might be destroyed in a short time. The monsoon waves would then convert the dead coral to rubble. In the absence of a barrier against the advancing waves during the monsoon it would also lead to serious erosion of the shoreline. The coral reef fish would also disappear with the destruction of the coral formations. On account of these considerations it was decided to conduct a survey of the Crown-of-Thorns starfish in eastern coastal waters in order to estimate the magnitude of the population of the starfish in these waters.
Show more [+] Less [-]Department of Fisheries, Fisheries Research Station, Ceylon now incorporated in: National Aquatic Resources Research and Development Agency, Sri Lanka
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