Genetic decoupling of spat origin from hatchery to harvest of Mytilus galloprovincialis cultured in suspension

Díaz‐Puente, Borja; Miñambres, M.; Rosón, Gabriel; Aghzar, Adil; Presa, Pablo

doi:10.1016/j.aquaculture.2016.04.016

Cited by 4 publications

(1 citation statement)

References 36 publications

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“…The reproductive cycle of this species has been studied on a world scale for a better understanding of its ecophysiology [26,27], biology [28,29] and genetics [30]. For instance, broodstock conditioning in hatchery systems is key to improve the quality and quantity of commercial stocks [31].…”

Section: Introductionmentioning

confidence: 99%

Influence of Pediveliger Larvae Stocking Density on Settlement Efficiency and Seed Production in Captivity of Mytilus galloprovincialis in Amsa Bay, Tetouan

Janah,

Aghzar,

Presa

et al. 2024

Animals

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In mussel hatchery systems, the settlement process is a crucial element influencing seed yield. The current study assayed the influence of five densities of competent pediveliger larvae on settlement success and post-larvae production. We showed an inverse relationship between density and settlement efficiency, e.g., an attachment success of 99.4% at the lowest density (35 larvae/cm2) but only 9% at the highest density (210 larvae/cm2). However, post-larvae production was higher at intermediate larvae densities (70 larvae/cm2). The reimplementation of treatments upon post-larvae density after 6 weeks post settlement showed that the lowest-density groups bore both the highest post-larvae growth rate (22.24 ± 4.60 µm/day) and the largest head batch (48% of the size distribution), as compared to the higher-post-larvae-density groups. These results highlight the importance of optimizing both pediveliger larvae density and post-larvae density, to maximize high-quality seed yield in local hatcheries. Current rearing technologies would assure a timely commercial seed production to protect natural sea rocky beds in Alboran Sea coasts.

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Section: Introductionmentioning

confidence: 99%

Influence of Pediveliger Larvae Stocking Density on Settlement Efficiency and Seed Production in Captivity of Mytilus galloprovincialis in Amsa Bay, Tetouan

Janah,

Aghzar,

Presa

et al. 2024

Animals

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Provisioning of Mussel Seed and Its Efficient Use in Culture

Kamermans

2018

Goods and Services of Marine Bivalves

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Mussel culture largely depends on seed and feed from the natural environment. This paper focusses on seed provisioning and efficient use of these resources in mussel production. Approaches and technologies for seed supply and efficient use of seed in mussel production are described for the different culture techniques. This includes potential interactions and conflicts with the natural environment. Three methods are used to provide seed: wild harvest, use of suspended collectors and hatchery production. Harvest of wild seed from seaweed (in New Zealand) or natural beds is still a major source for culture in some areas, costs are low but provisioning is often unreliable. Most research concerning spat collection deals with comparison of different types of suspended collectors, settlement cues and problems with biofouling. Hatchery seed is more expensive, but hatcheries provide the opportunity for selective breeding and triploid production giving the product an added value. The challenge is to bring hatchery production costs more in line with the actual sale value of mussel seed. Monitoring genetic diversity can give insight in whether collector seed or hatchery seed growth and survival is negatively affected by reduced diversity. Grow-out occurs in bottom culture, bouchot culture and off-bottom longline and raft culture. In bottom-culture, the focus is on developing better seeding techniques, predator control and optimizing culture practices such as timing of relay, substrate use and harvest. For bouchot culture, technical developments are directed to mechanical methods to increase efficiency in size grading, restocking, harvesting and processing. Innovation in growing-out techniques for longline and raft culture are directed towards the investigation of optimal stocking densities, and on material type and configuration of farms. Production efficiency increases from bottom culture to bouchot culture, to rope and raft culture and are related to the sources of mortality and differences in growth rate. Growth rate of mussels is higher in off bottom culture than in on bottom culture and higher when submerged than in intertidal. Mussels from the Perna genus are found to have a higher growth rate but a lower production efficiency than mussels from the Mytilus genus. Efficient use of seed in mussel culture should aim at a reduction of mussel

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Genotype by environment interaction for shell length in Mytilus galloprovincialis

Díaz‐Puente

Guíñez

Pita

et al. 2020

Journal of Experimental Marine Biology and Ecology

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Genetic decoupling of spat origin from hatchery to harvest of Mytilus galloprovincialis cultured in suspension

Cited by 4 publications

References 36 publications

Influence of Pediveliger Larvae Stocking Density on Settlement Efficiency and Seed Production in Captivity of Mytilus galloprovincialis in Amsa Bay, Tetouan

Influence of Pediveliger Larvae Stocking Density on Settlement Efficiency and Seed Production in Captivity of Mytilus galloprovincialis in Amsa Bay, Tetouan

Provisioning of Mussel Seed and Its Efficient Use in Culture

Genotype by environment interaction for shell length in Mytilus galloprovincialis

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