Proceeding – ICM-MBT (2017) 74–80 International Conference Proceeding – ICM-MBT 2017 Journal home page: http://pksplipb.or.id/; email: journal@pksplipb.or.id PROCEEDING International Conference on Integrated Coastal Management and Marine Biotechnology, November, 29-30 th 2016, Bogor, Indonesia Potential production of green mussel spat (Perna Viridis L.) collected with different method in Coastal Waters Kuala Langsa, Aceh Andi Sagita a1 , 8 Rahmat Kurnia a , Sulistiono a a Departement of Aquatic Resources Management, Bogor Agricultural University Bogor 16680, West Java, Indonesia Abstract Green mussel culture development is still dependent on the availability of seed or called spat derived from nature, so knowledge about the collector or attachment of spat and appropriate collection methods should be known. This research aims to determine the most optimal method to collected green mussel spat on the coastal waters Kuala Langsa, Aceh. Based on parametric t-test, showed if the production potential spat covering production (g), the total spat collected (individual per collector 2 m) and average length (mm) on both longline and stick method which different significantly (P<0.05). Spat production with longline method of 3713.50 ± 53.40 g, where total spat collected as much as 175.75 ± 12.63 individuals per collector 2 m, with average length of 7.33 ± 1.22 mm, while the spat production with stick method of 2613.35 ± 28.80 g, where total of spat collected as much as 86.25 ± 13.72 individuals per collector 2 m, with average length of 6.76 ± 1.44 mm. Parameters of water quality during spat collection period is still appropriate for support green mussels life, where the temperature ranges from 28.9 to 34° C, salinity of 26.6 to 30.1 ppt, turbidity of 20 to 22 cm, pH of 7.9 to 8.3 and DO of 4.9 to 6.0 mg/l and the water current of 0.1 to 0.3 m/s. Green mussel spat collected with longline method showed optimal results to be practiced in the coastal waters Kuala Langsa, Aceh. ©2017 The Authors. Peer-review under responsibility of the authors of ICM-MBT 2016. Keywords: Potential production; green mussel spat; longline; stick; Kuala Langsa 1. Introduction Green mussel (Perna viridis L. 1758) is a marine organism that many dominate the rocks littoral and sublittoral ecosystems in coastal areas (Vakily, 1989; Hickman, 1992), and is widely cultivated in tropical regions such as India, Indonesia, Philippines, Singapore, Thailand, and Malaysia (Sallih, 2005). Green mussels become one of the important commodity for aquaculture because this species is known for its rapid growth characteristics and have a high tolerance to various environmental conditions, as well as economically profitable for an aquaculture system (Rajagopal et al., 2003). Green mussel culture is one of the important industrial sectors such as aquaculture continues to grow more (Naylor et al., 2000; FAO, 2006). Factors that encourage the development of green mussel culture among others green mussel growth rate relatively quickly so that the shorter culture period to reach consumption size and the availability of spat year round without the need for production (Cheney, 2010). Mussels are also able to provide a cheap source of protein with the value of minerals and essential vitamins (Fuentes et al., 2009). Green mussels culture can be done with low production costs but have high profitability (Acosta et al., 2009), besides the culture had no impact on environmental 1 Corresponding author. Tel.: +62-823-2684-0655. E-mail address: andisagita2@gmail.com