Larval and juvenile rearing of black-lip pearl oyster, Pinctada margaritifera (Linnaeus)

Alagarswami, K; Dharmaraj, S; Chellam, A; Velayudhan, T S

doi:10.1016/0044-8486(89)90250-0

Cited by 51 publications

(39 citation statements)

References 9 publications

(5 reference statements)

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“…Alagarswami et al (1989) observed that seeds of P. margaritifera, produced in the laboratory and cultivated in "pearl nets" at 5 m depth had a daily growth rate of 0.4 mm of dorso-ventral height.…”

Section: Discussionmentioning

confidence: 99%

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%

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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“…Larvae typically remain in the plankton for 26–30 days prior to settlement [29,30], and due to very limited motility, are largely dispersed by current advection and turbulent diffusion in the ocean surface (mixed) layer.…”

Section: Methodsmentioning

confidence: 99%

A Parallel Population Genomic and Hydrodynamic Approach to Fishery Management of Highly-Dispersive Marine Invertebrates: The Case of the Fijian Black-Lip Pearl Oyster Pinctada margaritifera

et al. 2016

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Fishery management and conservation of marine species increasingly relies on genetic data to delineate biologically relevant stock boundaries. Unfortunately for high gene flow species which may display low, but statistically significant population structure, there is no clear consensus on the level of differentiation required to resolve distinct stocks. The use of fine-scale neutral and adaptive variation, considered together with environmental data can offer additional insights to this problem. Genome-wide genetic data (4,123 SNPs), together with an independent hydrodynamic particle dispersal model were used to inform farm and fishery management in the Fijian black-lip pearl oyster Pinctada margaritifera, where comprehensive fishery management is lacking, and the sustainability of exploitation uncertain. Weak fine-scale patterns of population structure were detected, indicative of broad-scale panmixia among wild oysters, while a hatchery-sourced farmed population exhibited a higher degree of genetic divergence (Fst = 0.0850–0.102). This hatchery-produced population had also experienced a bottleneck (NeLD = 5.1; 95% C.I. = [5.1–5.3]); compared to infinite NeLD estimates for all wild oysters. Simulation of larval transport pathways confirmed the existence of broad-scale mixture by surface ocean currents, correlating well with fine-scale patterns of population structuring. Fst outlier tests failed to detect large numbers of loci supportive of selection, with 2–5 directional outlier SNPs identified (average Fst = 0.116). The lack of biologically significant population genetic structure, absence of evidence for local adaptation and larval dispersal simulation, all indicate the existence of a single genetic stock of P. margaritifera in the Fiji Islands. This approach using independent genomic and oceanographic tools has allowed fundamental insights into stock structure in this species, with transferability to other highly-dispersive marine taxa for their conservation and management.

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“…It dwells from low tide levels to a depth of 30 m (Kent, 1998;Mastaller, 1987). This species of oyster is collected as a food resource and is also used for pearl production (production of half-pearls or mabe) in many countries around the world (Alagarswami et al, 1989). Two hundred adult P. aegyptiaca with anteroposterior shell sizes of 150 -200 mm were randomly collected from the Gulf of Aqaba.…”

Section: Sample Preparationmentioning

confidence: 99%

The Effect of Pollution on Scope for Growth in the Pearl Oyster, Pteria aegyptiaca, in the Gulf of Aqaba, Jordan

Aladaileh¹

2014

IJB

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This experiment was conducted to assess the effects of pollution on both the physiological and energetic characteristics (SFG) of Pteria aegyptiaca in the Gulf of Aqaba, Jordan. Four locations were chosen to represent both contaminated and uncontaminated locations. Phosphate Loading Berth (P) and the Industrial Area (I), represent contaminated locations, whilst the Hotels Area (H) and Marine Science Station (M) represent uncontaminated locations. The results of this experiment showed that contaminated regions had significant effects (P < 0.05) on respiration rate, clearance rate and absorption efficiency. A significant difference (P < 0.05) was identified between the scopes for growth of animals transplanted in contaminated regions compared with animals from uncontaminated locations. The Phosphate Loading Berth (P) and Industrial Area (I), showed the lowest SFG (18.7 ± 4.591 and 35.94 ± 7.412 Jh -1 respectively), reduced to only a half of SFG compared to uncontaminated locations. Results from our study indicate that oysters exposed to contaminated regions are highly compromised in both their energetics and physiology. Failure to improve the environmental conditions in these regions may have catastrophic effects on the micro and macro fauna.

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Larval and juvenile rearing of black-lip pearl oyster, Pinctada margaritifera (Linnaeus)

Cited by 51 publications

References 9 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

A Parallel Population Genomic and Hydrodynamic Approach to Fishery Management of Highly-Dispersive Marine Invertebrates: The Case of the Fijian Black-Lip Pearl Oyster Pinctada margaritifera

The Effect of Pollution on Scope for Growth in the Pearl Oyster, Pteria aegyptiaca, in the Gulf of Aqaba, Jordan

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