Growth of blacklip pearl oyster (Pinctada margaritifera) juveniles using different nursery culture techniques

Southgate, Paul C.; Beer, Andrew C.

doi:10.1016/s0044-8486(99)00392-0

Cited by 41 publications

(22 citation statements)

References 10 publications

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“…For laboratory-produced juveniles of P. margaritifera, Southgate and Beer (2000) observed 100% survival, but this value can vary with juvenile size and culture method. A survival between 68 and 88% was reported for juveniles of P. margaritifera with 3 to 5 months of age and initial height of 9.8 to 13.9 mm cultivated for 19 weeks in baskets and nursery lanterns (Southgate and Beer, 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Culture methods that limit the physical contact among juveniles, such as bags and ear hanging, prevent grouping and allow uniform growth (Southgate and Beer, 2000).…”

Section: Discussionmentioning

confidence: 99%

“…The criteria utilised to evaluate if the culture method is favourable to juveniles depend on site conditions, such as composition and abundance of predators and the quantity of fouling (Southgate and Beer, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Growth and survival of the pearl oyster Pteria hirundo (L.,1758) in an intermediate stage of culture in Santa Catarina, Brazil

et al. 2012

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There are no records in Brazil for the culture of Pteridae family oysters, genus Pteria and Pinctada. The intermediate culture can be considered one of the critical stages during the oyster farming. The changes in life conditions from a semi-closed environment provided by the collector to the structures utilized for the growth represents a considerable stress factor to which the animals are subjected. The goal of the present study was to evaluate the growth and survival of the pearl oyster Pteria hirundo (Linnaeus, 1758) kept in intermediate lanterns. Seeds of P. hirundo, obtained through larviculture carried out at the Marine Molluscs Laboratory (UFSC), southern Brazil were detached from the collectors, transferred and kept in an intermediate culture system (oyster lantern). During 6 months, growth (dorsoventral height -DVH in mm) and survival (%) were evaluated. Two size classes were tested: medium (M), between 3.4 and 4.4 mm, and large (L), bigger than 4.5 mm. The density of occupation in each floor of the lantern was 50%. At the end of the experiment, the survivals observed were 90 and 94% for the sizes M and L, respectively. Medium juveniles of Pteria hirundo had an average (Std) increase of 16.1 (±4.38) mm in the dorso-ventral height, and large juveniles an average increase of 11.4 (±3.77) mm after six months of experiment. The results observed during the intermediate stage of cultivation indicate that Pteria hirundo presents survival and growth similar to other species of pearl oysters traditionally used in the pearl industry in several countries. Palavras-chave: ostra perlífera, crescimento, sobrevivência, cultivo intermediário, Pteria hirundo. Keywords

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Section: Discussionmentioning

confidence: 99%

“…Culture methods that limit the physical contact among juveniles, such as bags and ear hanging, prevent grouping and allow uniform growth (Southgate and Beer, 2000).…”

Section: Discussionmentioning

confidence: 99%

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Growth and survival of the pearl oyster Pteria hirundo (L.,1758) in an intermediate stage of culture in Santa Catarina, Brazil

et al. 2012

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“…To overcome these, spat have to be reared in controlled nursery rearing systems for attaining adequate strength and size to survive well in natural ecosystem before transferring them to open sea farming (Southgate and Beer, 2000). Very few studies have been done in this direction.…”

Section: Introductionmentioning

confidence: 99%

Growth and survival of the blacklip pearl oyster Pinctada margaritifera (Linnaeus) spat reared with various combinations of microalgae in different stocking densities

C.¹,

A.²,

Manjumol³

et al. 2014

J.Mar.Biol.Ass.India

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The present study has revealed that, the temperature has a crucial role among the observed physiochemical parameters on the growth and survival of P. margaritifera spat. Instantaneous growth rates (IGRs) in DVM, APM and TWT were calculated and used to assess the variation in growth of spat reared with different feed mixtures (FM-1 -8) of five diatoms and stocking densities 20 and 30). Among all treatments, FM-3, 4 and 5 gave better performance than that all other combinations of diatoms. Chaetoceros calcitrans, Nannochloropsis oculata and Chlorella marina was formed major shares (60%) respectively in combination with 10% each of rest of algae. FM-7 which had all diatoms in equal (20%) measure performed as the next best feed combination. Poor growth was observed in spat fed with FM-2 which was dominated by Isochrysis galbana (60%) and FM-6 which comprised of an equal measure (30%) of Pavlova salina, Isochrysis galbana, Chaetoceros calcitrans and Nannochloropsis oculata and Chlorella marina at 5% each. When the stocking density increases (SD-20 and 30) growth rates (IGRs) in all three variables decreased irrespective of feed combinations. Mortality rates varied in different treatments and also with stocking densities. Maximum mortality was observed in control in all the stocking densities. However, in all the feeding combinations and stocking densities, 100 % survival was observed upto the 9 th DOC and mean cumulative mortalities showed a gradual increase. Comparatively very less cumulative mortality and better growth performance were recorded in stocking density, SD-10.

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“…To capitalize on these developments however, appropriate nursery culture and grow out protocols are required. Culture of the blacklip pearl oyster, Pinctada margaritifera has developed rapidly in the Indo-Pacific region over recent years (Fassler 2002), and use of hatchery produced spat in pearl culture operations has assumed increasing importance (Gervis and Sims 1992;Southgate and Beer 2000). Despite this development, relatively little information is available on appropriate early nursery culture protocol for this species.…”

Section: Introductionmentioning

confidence: 99%

Effect of mesh coverings on retention and growth of blacklip pearl oyster (Pinctada margaritifera) spat during early nursery culture

Beer

Southgate

2008

Aquat. Living Resour.

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-Hatchery produced pearl oyster spat are generally transferred to the ocean on spat collectors which may, or may not, be covered with fine mesh to prevent spat loss. This study examined the effectiveness of mesh bag covers on culture units for spat of the blacklip pearl oyster, Pinctada margaritifera. It assessed spat retention and growth in culture units without mesh bags (REMOVE) and in those where mesh bags were replaced weekly (REPLACE), washed weekly (WASH) or left unwashed (NO WASH) for the duration of the six-week experiment. Culture units in the REPLACE treatment had the greatest number of spat at the end of the experiment and 41% more spat than in the REMOVE treatment. Grading of the spat from each treatment at the end of the experiment showed that the REPLACE treatment had the highest number of spat in large and medium size classes with mean (± SE) dorso-ventral height of 23.9 ± 0.5 mm and 17.4 ± 0.5 mm, respectively. Mean wet weight of the mesh bags at the end of the experiment differed between treatments with bags from the WASH and NO WASH treatments having significantly greater mean wet weights than those from the REPLACE treatment. The results show that the presence of a mesh bag around spat culture units may improve retention of spat by between 18-41%. However, protective mesh bags may foul quickly and, to maximise retention and spat growth, weekly replacement of mesh bags should be undertaken.

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Growth of blacklip pearl oyster (Pinctada margaritifera) juveniles using different nursery culture techniques

Cited by 41 publications

References 10 publications

Growth and survival of the pearl oyster Pteria hirundo (L.,1758) in an intermediate stage of culture in Santa Catarina, Brazil

Growth and survival of the pearl oyster Pteria hirundo (L.,1758) in an intermediate stage of culture in Santa Catarina, Brazil

Growth and survival of the blacklip pearl oyster Pinctada margaritifera (Linnaeus) spat reared with various combinations of microalgae in different stocking densities

Effect of mesh coverings on retention and growth of blacklip pearl oyster (Pinctada margaritifera) spat during early nursery culture

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