Experimental Field Cultivation of Gracilaria edulis (GMEL.) SILVA

Raju, P. V. Sunder; Thomas, P. C.

doi:10.1515/botm.1971.14.2.71

Cited by 41 publications

(19 citation statements)

References 0 publications

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“…If the two species are cultured in sequence for 5-6 months, a total annual production of 3 .3 kg fresh wt m-' can be obtained from an original inoculum of only 60 g . This productivity is somewhat similar to that of G. edulis in India (Raju & Thomas 1971), although the cultivation periods are different . The harvest of 3 .3 kg m-1 of G .…”

Section: Resultssupporting

confidence: 69%

A preliminary study of raft cultivation of Gracilaria verrucosa and Gracilaria sjoestedtii

Li¹,

Ren-Yi²,

Zhao-cai³

1984

Hydrobiologia

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Section: Resultssupporting

confidence: 69%

A preliminary study of raft cultivation of Gracilaria verrucosa and Gracilaria sjoestedtii

Li¹,

Ren-Yi²,

Zhao-cai³

1984

Hydrobiologia

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“…Test and pilot farms have been set up in India (Raju & Thomas, 1971), Sri Lanka (Jayasuriya, 1993), China (Ren et al 1984;Ren & Wang 1987), Philippines (Hurtado-Ponce, 1990), West Indies (Smith et al 1984;Smith, 1986), Cuba (Areces, 1990), Namibia (Dawes, 1992;Molloy, 1992), South Africa (Anderson et al, 1992), Brazil (CAmara Neto, 1987), Chile (Westermeier et al, 1988) and Venezuela (Rincones, 1990;Rincones et al 1992;Racca et aL, 1993).…”

Section: Vegetative Propagationmentioning

confidence: 99%

Suspended cultivation of Gracilaria in the sea

Dawes¹

1995

J Appl Phycol

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Suspended rope cultivation systems for Gracilaria or Gracilariopsis can be seeded from spores but vegetative propagation is used for those which are currently commercially successful. Such systems and methods have been recently developed for the shallow lagoon areas around Liideritz, Namibia and deeper open water sites off the Araya Peninsula, Venezuela. Various sites, substrata, depths and seeding methods have been assessed and have resulted in average commercial growth rates of about 3.5% per day. Netlon 'Superope' has been demonstrated to be more suitable than laid rope as a substratum for outplanted vegetative Gracilaria gracilis in Namibia as it does not compress the thalli as they grow. An efficient method, using hooks, has been developed to 'seed' the Superope. There is a very low incidence of algal epiphytism: mainly Ceramium and Ulva sp. In Venezuela, pilot rope cultivation systems for Gracilariopsis tenuifrons proved successful and have good commercial prospects.

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“…Even though there are a number of studies showing the effects of several environmental factors on the growth of numerous species of Gracilaria, (see Hoyle, 1975, for a review), few studies have measured population changes or seasonal variations of biomass (Abbott, 1980) and productivity of wild populations . Many present studies focus on field cultivation of selected species (Raju & Thomas, 1971 ;Chen, 1975 ;Thomas & Krishnamurthy, 1976 ;Hansen, 1980 ;Tseng, 1981 ;Chung, 1981 ;Yoneshige-Braga & Baeta-Neves, 1981) . However, the steep slope and the intense water movement affecting most of the highly productive coastline of northern and central Chile limit the possibilities of field cultivation to a few calm bays (Santelices & Lopehandía, 1981) .…”

Section: Introductionmentioning

confidence: 99%