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Abstrak :
ABSTRACT
ABSTRACT
Seagrass contains bioactive compounds that are potential to be developed in health and medicinal application. Cymodocea rotundata and Thalassia hemprichii was collected from Pramuka Island TNKpS and Karang Sewu TNBB. Samples were cut into different parts i.e. leaf, rhizome, and root. Each part was dried as a powdered simplicia and extracted using methanol (1:3; w/v). All the extracts were characterized using HPLC and tested as larvicide against the larvae of Aedes aegypti. Batches of 25 early 3rd instar larvae of Ae. aegypti were transferred into 250 mL sample bottles containing 100 mL 1% extract. There are two control groups: abate (1%) and aquadest. The mortality of larvae was observed after 12, 24, and 48 hours. The leaves extract of T. hemprichii showed the highest mortality 100% after 12 h with LC50 concentration 0.56%. Chromatogram results from different species of C. rotundata and T. hemprichii showed a similar pattern of peaks. The results suggested that leaves extract of Thalassia hemprichii have the highest potential to be used as a larvicide against Ae. aegypti larvae.