![]() ![]() This article details the first successful attempt at larval rearing and large scale spat production of P. INS galloprovincialis to meet the demands of the farming sector (). ![]() ![]() The Blue Seed project in Europe initiated in 2005 has developed and standardized techniques for commercial level seed production of M. Although hatchery spat production of Perna canaliculus in New Zealand and Perna sp in the South Pacific has been developed, the mussel farming sector is still dependent on the wild spat (Alfaro et al., 2010). (1987) detailed larval rearing and spat production of the brown mussel Perna indica. ![]() (1976), described spawning, fertilization and larval development of the green mussel P. Loosanoff and Davis (1963) successfully reared Mytilus edulis larvae in the laboratory. Globally, little attention was paid to large scale hatchery production of mussel spat due to the abundant supply of seed from natural mussel beds. Hatchery production of mussel spat could, therefore, provide an alternate source of seed to the farming sector thus enabling the enhanced production of mussels through culture and reduce dependence on wild seed and reduce social conflicts (Alagarswami, 1980 Kuriakose et al., 1988 Appukuttan et al., 1998 Laxmilatha and Sivadasan, 2007). However, this is leading to social conflicts between the wild mussel harvesters and the mussel farmers. The demand for seed has been increasing with expansion of farming in various estuaries. Mussel farming in North West and Central Kerala is entirely dependent on natural spat settlement in the beds of the North West Coast. Natural spat settlement is highly variable and dependent on rainfall and various other environmental factors. The fishery and culture of this species are generally dependent on natural spat settlement in the granite and lateritic rocks along the North-West Coast of Kerala. The green mussel is cultured in the estuaries of Central and Northern Kerala, South west coast of India. It forms a significant fishery and contributes nearly 50% to the total bivalve production of the area. Introduction The green mussel Perna viridis (Linnaeus, 1758) is a commercially important marine bivalve distributed along the North West Coast of India. Prospects for large scale hatchery production of green mussel spat are discussed. The shell length–height relationship in the larvae is given by Y = −0.397 + 1.149 X, r = 0.987. Spat fall began on 21st day and continued up to the 35th day on a variety of substrates. galbana and Chaetoceros calcitrans was provided. Isochrysis galbana was used as a standard algal food until settlement of spat after which a mixed algal diet of I. The larvae grew through the straight hinge, umbo, eyespot and pediveliger stages in the pelagic phase before metamorphosing into the plantigrade stage and setting as spat on a suitable substratum. 1603, Cochin 682 031, Kerala, IndiaĪrticle history: Received 27 March 2010 Received in revised form 16 December 2010 Accepted 16 December 2010 Available online 7 January 2011 Keywords: Perna viridis Larval development Spat productionĪ b s t r a c t The Asian green mussel Perna viridis Linnaeus (1758) was spawned in hatchery and the larvae were successfully reared to setting. Visakhapatnam Regional Centre, Central Marine Fisheries Research Institute, Ocean View layout, Pandurangapuram, Visakhapatnam 530 003, Andhra Pradesh, India Central Marine Fisheries Research Institute, P.B. Potential for the hatchery production of spat of the green mussel Perna viridis Linnaeus (1758) P. c o m / l o c a t e / a q u a - o n l i n e Contents lists available at ScienceDirectĪquaculture j o u r n a l h o m e p a g e : w w w. ![]()
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