Physiological energetics of mussel larvae (Mytilus edulis). II Food uptake

Sprung, Martin

doi:10.3354/meps017295

Cited by 92 publications

(48 citation statements)

References 37 publications

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“…Thus, according to this study, particles smaller than about 1 µm and larger than 8 to 9 µm may not be eaten by the veliger larvae. Quite similar results were obtained by Sprung (1984), who measured retention of Riisgård 1988) particles in the size range 1.4 to 9 µm in M. edulis larvae. Here, the retention efficiency was maximal at a particle diameter of 3.5 µm, while smaller and larger particles were retained with declining efficiency to become about 30% of the maximum for 1.4 and 9 µm particles.…”

Section: Structure Of Other Downstream Collecting Systemssupporting

confidence: 71%

Downstream collecting in ciliary suspension feeders: the catch-up principle

Riisgård¹,

Nielsen²,

Larsen³

2000

Mar. Ecol. Prog. Ser.

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Based on observations of feeding structures and currents in the polychaete Spirorbis tridentatus, the entoproct Loxosoma pectinaricola and the cycliophore Symbion pandora, which all possess compound cilia, it is hypothesized that their capture mechanism is based on the catch-up principle. According to this principle, the compound cilia constitute the pump which generates a flow with suspended particles that enters the ciliary region. In this region the same cilia, during their power stroke, catch up with suspended particles and transfer the particles to a food groove, or a mouth cavity. In the particle-size retention spectrum, the lower limit depends on spacing between cilia in phase, while the upper end depends on cilia length which may or may not allow particles to enter the ciliary region. On the basis of fluid mechanical considerations and literature descriptions of structure and function of the ciliary bands of some rotifers and of the various types of trochophora larvae of annelids, molluscs and entoprocts, it is hypothesized that the feeding mechanisms of these organisms are based on the catch-up principle.

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Section: Structure Of Other Downstream Collecting Systemssupporting

confidence: 71%

Downstream collecting in ciliary suspension feeders: the catch-up principle

Riisgård¹,

Nielsen²,

Larsen³

2000

Mar. Ecol. Prog. Ser.

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“…Ϫ1 (Sprung 1984), the proportion of water cleared by larvae can be up to 0.3 d Ϫ1 . Assuming that the specific growth rate of phytoplankton is 0.5 d Ϫ1 (Parsons et al 1977), larvae would consume 40-60% of the total primary production.…”

Section: Discussionmentioning

confidence: 99%

Climate‐related changes in recruitment of the bivalve Macoma balthica

Philippart¹,

Aken²,

Beukema³

et al. 2003

Limnology & Oceanography

237

194

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Population dynamics of common intertidal bivalves (Cerastoderma edule, Macoma balthica, Mya arenaria, Mytilus edulis) are strongly related to seawater temperatures. In northwestern European estuaries, series of mild winters followed by low bivalve recruit densities lead to small adult stocks. In this study, we examine temperature-induced effects on reproductive output (eggs m Ϫ2 ), onset of spawning (day of the year), and the juvenile instantaneous mortality rate (per day) of M. balthica. Data analysis was based on an extensive long-term data set originating from the western Wadden Sea. Our results strongly suggest that rising seawater temperatures affect recruitment by a decrease in reproductive output and by spring advancement of bivalve spawning. Apparently, global warming upsets the evolved reproductive strategy of this marine bivalve to tune its reproduction to the most optimal environmental conditions for the first vulnerable life stages, most importantly the match/mismatch of time of spawning with that of the phytoplankton bloom and the settlement of juvenile shrimps on the tidal flats. It is hypothesized that the observed density-dependent mortality of juvenile bivalves may act via competition for food, a behavioral response of shrimp to low spat densities, or be the result of the response of age and size at metamorphosis of marine bivalves to resource variability. It is to be expected that prolonged periods of lowered bivalve recruitment and stocks will lead to a reformulation of estuarine food webs and possibly a reduction of the resilience of the system to additional disturbances, such as the depletion and disturbance by shellfish fisheries.

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“…Food rations used for larval culture can exceed 50,000 cells ml -1 day -1 , O´Beirn et al 1997. However, although high food concentrations can increase growth rates, they may also elevate mortality rates, which are explained by decreases in filtering rates and metabolism associated with high concentrations of microalgae (Sprung 1984, Gallager 1988, Doroudi et al 1999. It is also important to note that the supply of microalgae represents a critical point for hatcheries or seeding centres, accounting for up to 30% of the seed production cost (Coutteau & Sorgeloos 1992).…”

Section: Introductionmentioning

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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Physiological energetics of mussel larvae (Mytilus edulis). II Food uptake

Cited by 92 publications

References 37 publications

Downstream collecting in ciliary suspension feeders: the catch-up principle

Downstream collecting in ciliary suspension feeders: the catch-up principle

Climate‐related changes in recruitment of the bivalve Macoma balthica

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

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