Laboratory culture of Gracilaria spp. and Ulva lactuca in seawater enriched media

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Abstract: 

Thallus bits of Gracilaria edulis, G. corticata, G.crassa and Ulva lactuca were maintained in three enriched seawater growth media under laboratory conditions. Weekly observation on growth rate of these algae showed that Walne's medium enhanced Daily Growth Rate (DGR) of Ulva lactuca (54.42 f 3.82 mg/d), Gracilaria corticata (58.71 f 3.35 mg/d) and G. crassa (72.42 f 2.07 mg/d). Gran'laria edulis registered higher growth rate in PES medium (50.42 f 3.82 mg/d) than in Walne's and Gamborg media. However, addition of 2% garden soil extract to Walne's medium promoted the DGR in all the four species considerably (62.28 mg/d for Ulva, 66.71 mg/d for Gracilaria corticata, 77.71 mg/d for G. crassa and 56.29 mg/d for G. edulis). The results are compared with the growth rate of seaweeds achieved elsewhere in in situ sea farming being carried out without addition of any nutrients extraneously.

Author(s): 
Kaladharan, P
Gireesh, R
Keywords: 
Laboratory culture
Gracilaria
Ulva lactuca
Seawater enriched media
Link / Ref: 
http://eprints.cmfri.org.in/5952/
Attachment: 
PDF icon Laboratory culture of Gracilaria spp. and Ulva lactuca in seawater enriched media.pdf
Article Source: 
Kaladharan, P and Gireesh, R (2003) Laboratory culture of Gracilaria spp. and Ulva lactuca in seawater enriched media. Seaweed Research and Utilisation, 25 (1 & 2). pp. 139-142.
Category: 
Aquaculture methods
Basic Biology