GROWTH OF KAPPAPHYCUS ALVAREZII AND EUCHEUMA DENTICULATUM CULTIVATED IN FLOATING CAGES

 
Kasim M. 1), Muzuni 2), Mustafa A, 3),  Indrayani.4), Jalil W.5)
 
1.Faculty of Fishery and Marine Sciences, Halu Oleo University, Indonesia.
email : marufkasim@hotmail.com
2.Mathematic and Natural Science Faculty, Halu Oleo University, Indonesia.
email : muzuni71@yahoo.co.id
3.Faculty of Fishery and marine Sciences, Halu Oleo University, Indonesia.
email : astafa_611@yahoo.com
4.Faculty of Fishery and marine Sciences, Halu Oleo University, Indonesia.
email : indrayani_tajudin@yahoo.com.au  
6.Faculty of Fisheries,  Dayanu Iksanuddin University
email : wardha.jalil@yahoo.co.id

Keywords: Floating cage; seaweeds; cultivation, propagules

Abstract

Seaweed (Eucheumatoid) cultivation continues to expand with a variety of methods to increase production. Kappaphycus alvarezii and Eucheuma denticulatum are two species were belonging to genus Eucheuma. Both species are very popular simultaneously cultivated in all cultivation regions in Indonesia. The purpose of this study to observe at both species of growth by using new cultivation methods in Indonesia and named floating cage. This research was conducted during March-November 2015 in Southeast Sulawesi Province, Indonesia. The results showed that the growth rates of E. denticulatum in floating cage were faster and had better thallus morphology than K. alvarezii. The total weight of E. denticulatum and K. alvarezii increased from 5 kg in day 0 to about 31 and 25.6 kg, respectively in day 50. Thallus growth of E. denticulatum and K. alvarezii was different in September and October. The growth of E. denticulatum and K. alvarezii increased from 50 g in day 0 to about 253 g and 168.5 g, respectively in day 45.  The average Specific Growth Rate (SGR) of E. denticulatum cultivated in Floating cage reached 3,6 % day-1 whereas K. alvarezii achieved its highest SGR in 3,1% day-1 in July and August.