Effects of nutrition on larval growth and survival in bivalves

Marshall, Robert; McKinley, Scott A.; Pearce, Christopher M.

doi:10.1111/j.1753-5131.2010.01022.x

Cited by 123 publications

(83 citation statements)

References 116 publications

(411 reference statements)

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“…Similarly, the main variables significantly correlated with instantaneous oyster growth rate in the present study were components of the phytoplankton community. Diatoms are the preferred food for oysters (Dupuy et al 2000, Marshall et al 2010 and were positively correlated with oyster instantaneous growth at SI despite being scarce at this site. In contrast, dinoflagellates were correlated with instantaneous oyster growth at MB and TC, although the phytoplankton at MB was dominated by diatoms.…”

Section: Growthmentioning

confidence: 84%

Effects of the environment and culture depth on growth and mortality in juvenile Pacific oysters in the Strait of Georgia, British Columbia

Cassis¹,

Pearce²,

Maldonado³

2011

Aquacult. Environ. Interact.

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The effects of environmental variables, culture depth, and phytoplankton abundance and composition on juvenile Pacific oyster Crassostrea gigas growth and mortality were studied between June and October of 2008 at 4 sites in the Strait of Georgia, British Columbia, Canada. In addition, the effects of temperature-triggered depth manipulation on growth and mortality of oysters were examined in order to assess potential control measures for mitigating high summer mortalities associated with high temperature, harmful algal blooms (HABs), and other environmental stressors. Control oysters were held at constant depths of 3, 10, and 15 m, while experimental oysters were kept at 3 m depth and lowered to 10 or 15 m when the surface water temperature reached 14, 16, or 18°C. Site and Depth significantly affected the growth and mortality of control oysters. At the site with the best growth, cumulative mortality was low (range: 6.4 to 19%) and negatively correlated with temperature and positively with transparency. At the high-mortality site (range: 64 to 98%), mortality was positively correlated with temperature, chlorophyll concentration, and the biomass of diatoms and potentially harmful algae. Cumulative mortality was generally higher at 3 m than at 15 m depth. Significantly larger oyster volume was obtained with the oyster controls at 3 m than with those held at 10 or 15 m at most sites. Temperature-trigger treatments did not significantly affect oyster volume or cumulative mortality, and oysters moved to 10 and 15 m had final volumes similar to the 10 and 15 m controls, independent of trigger temperature. Oyster growers could select their sites for maximal growth and minimal mortality based on temperature profile, freshwater input, and phytoplankton abundance and composition.

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Section: Growthmentioning

confidence: 84%

Effects of the environment and culture depth on growth and mortality in juvenile Pacific oysters in the Strait of Georgia, British Columbia

Cassis¹,

Pearce²,

Maldonado³

2011

Aquacult. Environ. Interact.

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“…The greater food availability for larvae fed with 50,000 cells ml -1 day -1 showed no positive effect on the growth and/or survivorship of larvae of M. edulis, however, the effect of a better nutrition could express itself in the metamorphosis stage, either by increasing survivorship or by shortening the stage (Marshall et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Effect of stocking density and food ration on growth and survival of veliger and pediveliger larvae of the taquilla clam Mulinia edulis reared in the laboratory

Oliva

Abarca

Gutiérrez

et al. 2014

Rev. biol. mar. oceanogr.

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Efecto de la densidad de cultivo y la ración de alimento en el crecimiento y supervivencia de larvas velígeras y pedivelígeras de la almeja taquilla Mulinia edulis cultivadas en el laboratorio Resumen.-Para evaluar el efecto de la densidad sobre el crecimiento y la sobrevivencia se cultivaron larvas velígeras de la almeja taquilla Mulinia edulis a una densidad de 10 y 20 larvas ml -1 , alimentadas con 25.000 cel. ml -1 día -1 de una mezcla de Isochrysis aff. galbana (T-ISO) y Nannochloropsis oculata en recipientes de 5 L. Para medir el efecto de la ración de alimento se utilizaron 25.000 y 50.000 cel. ml -1 día -1 . Al final del experimento de densidad se encontraron diferencias en la supervivencia, pero no en el crecimiento. Las raciones de alimento experimentales no mostraron difer encias, ni en el crecimiento ni en la supervivencia larval. Para establecer el efecto de la densidad en el asentamiento, se cultivaron larvas pedivelígeras a densidades de 5, 10, 20 y 40 larvas cm -2 , en un sistema down-welling. Para determinar la ración adecuada se usaron 25.000, 50.000 y 100.000 cel. ml -1 día -1 de T-ISO y un cuarto tratamiento con aumento progresivo del alimento (25.000 a 100.000 cel. ml -1 día -1 ). El efecto de la densidad para las larvas pedivelígeras fue significativo en el crecimiento y en la supervivencia. Las densidades más bajas presentaron mayores tamaños y supervivencia y las postlarvas alimentadas con una ración de 100.000 cel. ml -1 día -1 alcanzaron la mayor longitud valvar (1728 ± 293 m). La mayor sobrevivencia (65%) se obtuvo con la ración ascendente a la edad de 50 días desde larva D. Para mejorar la producción masiva de semillas, se recomienda utilizar una densidad inicial de 10 larvas ml -1 y una concentración de microalgas de 25.000 cel. ml -1 día -1 . Para los cultivos postlarvales se recomienda una densidad de cultivo entre 5 y 10 larvas pedivelígeras cm -2 y una ración ascendente de alimento. Palabras clave: Cultivo de almejas, larva D, postlarvas, ChileAbstract.-In order to evaluate the effect of stocking density on growth and survival, veliger larvae of Mulinia edulis were reared at densities of 10 and 20 larvae ml -1 fed with a mix of 25,000 cells ml -1 day -1 of Isochrysis aff. galbana (T-ISO) and Nannochloropsis oculata in 5 L buckets. In ration experiments, larvae were fed with of 25,000 and 50,000 cells ml -1 day -1 . By the end of the stocking experiment, significant differences were found in survival but not in larval growth rate. The ration experiment showed no differences in the growth nor in the survival of the larvae. To establish the effect of stocking density on settlement of pediveliger larvae, these were reared in a down-welling system at densities of 5, 10, 20 and 40 larvae cm -2 .To determine an adequate food ration during settlement, pediveliger larvae were provided with 25,000, 50,000 and 100,000 cells ml -1 day -1 of T-ISO; a fourth treatment with a progressive increase of cells (25,000 to 100,000 cells ml -1 day -1 ) was used. Lower density treatments showed greater...

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“…Especially for I. galbana, it should be pointed out that the rather low contribution to total dietary CP, reduces the accuracy of extrapolation when assuming linearity in digestibility up to 100% of dietary CP. The poor CP digestibility of N. oceanica and I. galbana may be caused by the resistance of the thick and rigid algal cell wall to disruption by digestive processes (Becker, 2007;Marshall et al, 2010). Although there are no previous digestibility studies with mink, studies with other animals indicate that the digestibility of several algae species is dependent on disrupting the algal cell wall by proper processing (Saleh et al, 1985;Janczyk et al, 2005).…”

Section: Digestibilitymentioning

confidence: 99%

Evaluation of microalgae as sources of digestible nutrients for monogastric animals

Skrede¹,

Mydland²,

Ahlstrøm³

et al. 2011

J. Anim. Feed Sci.

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The study was carried out to evaluate three microalgae as potential nutrient sources in diets for monogastric animals. In a digestibility experiment with adult mink (Mustela vison), the microalgae Nannochloropsis oceanica, Phaeodactylum tricornutum and Isochrysis galbana were fed at 60, 120 and 240 g kg -1 as is, replacing fish meal. The N. oceanica and P. tricornutum had similar crude protein (CP) content (47.7 and 49.0% of DM, respectively), amino acid composition and lipid content (8.4 and 7.4%, respectively), whereas I. galbana contained 20.1% CP and 16.2% lipids. There was a significant linear reduction in CP digestibility with increasing dietary inclusion of all algae products. The apparent CP digestibility determined by linear regression for N. oceanica, P. tricornutum and I. galbana was 35.5, 79.9 and 18.8%, respectively. The individual amino acid digestibilities showed acceptable values for P. tricornutum, but low and highly variable values for N. oceanica and I. galbana. Although the algae contributed a minor proportion of dietary lipids, lipid digestibility declined with increasing inclusion of all algae and especially with the highest level of N. oceanica. It was concluded from the mink study that among the investigated algae, P. tricornutum was the preferable source of digestible nutrients.

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Effects of nutrition on larval growth and survival in bivalves

Cited by 123 publications

References 116 publications

Effects of the environment and culture depth on growth and mortality in juvenile Pacific oysters in the Strait of Georgia, British Columbia

Effects of the environment and culture depth on growth and mortality in juvenile Pacific oysters in the Strait of Georgia, British Columbia

Effect of stocking density and food ration on growth and survival of veliger and pediveliger larvae of the taquilla clam Mulinia edulis reared in the laboratory

Evaluation of microalgae as sources of digestible nutrients for monogastric animals

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