Uptake of glucose and orthophosphate by the American oyster

Swift, M. L.; Conger, K. A.; Exler, Jacob; Lakshmanan, S.

doi:10.1016/0024-3205(75)90113-7

Cited by 9 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ernst & Goerke, 1969Ahearn & Gomme, 1975. Mollusca: Pequignat, 1973Schulte, Clark & Lawrence, 1973;Bamford & Gingles, 1974;Swift, Conger, Exler & Lakshmanan, 1975. Echinodermata: Ferguson, 1967Fontaine & Chia, 1968.…”

Section: Discussionmentioning

confidence: 98%

d-Glucose transport across the apical membrane of the surface epithelium inNereis diversicolor

Gomme

1981

J. Membrain Biol.

View full text Add to dashboard Cite

Epidermal D-glucose transport was investigated in vivo in the brackish-water polychaete worm Nereis diversicolor. Transfer across the apical membrane is rate-limiting to D-glucose uptake, but the cuticle and/or mucus presents some resistance to D-glucose diffusion between bulk solution and transporting membrane. Maximal D-glucose influx is about 10(-12) mol sec-1 per cm2 of apical plasmalemma. Under natural conditions (approximately 1 microM D-glucose in the medium), backflux from the epidermal transport pool is negligible, but a significant paracellular outflux may occur. D-glucose influx across the apical membrane is Na+-dependent and completely inhibitable by phlorizin and harmaline; phloretin is less effective, and cytochalasin B has no effect. Influx is moderately depressed by KCN and iodoacetate, alpha-methyl-D-glucopyranoside is an effective substitute of D-glucose in transport. Animals acclimated to a low salinity, in which epidermal salt transport takes place, show a marked decrease of D-glucose transport capacity. On transfer of animals from a high to a low salinity, or vice versa, the corresponding change of influx occurs after a time-lag of at least an hour. Permeability of the epidermis to simple diffusion of D-glucose is 8 X 10(-8) cm sec-1 (on basis of gross epidermal area).

show abstract

Section: Discussionmentioning

confidence: 98%

d-Glucose transport across the apical membrane of the surface epithelium inNereis diversicolor

Gomme

1981

J. Membrain Biol.

View full text Add to dashboard Cite

show abstract

The uptake of dissolved glucose by juvenile green‐lipped mussels (Perna canaliculus)

Jordan,

Skelton,

Mugica

et al. 2024

Aquaculture Fish & Fisheries

View full text Add to dashboard Cite

A major expense in the operation of bivalve nurseries is the culture of high‐quality live microalgae feeds, and efforts to develop effective alternative feeds have had limited success. Juvenile bivalves are known to be able to absorb dissolved nutrients, but this ability has received minimal attention as a route for supplementary feeding. This study assessed the capacity of juvenile green‐lipped mussels (GLMs) (Perna canaliculus) to uptake and assimilate dissolved glucose at five experimental concentrations (i.e. 10 µg mL−1, 100 µg mL−1, 1 mg mL−1, 10 mg mL−1 and 30 mg mL−1) as a supplement to cultured microalgae. Growth and survival of the mussels were measured over 3 weeks. Although all glucose concentrations improved the performance of mussel spat compared to the control, the best performing was a concentration of 1 mg mL−1 of dissolved glucose which enhanced daily spat growth 2.7 times that of the control live microalgal diet without glucose. Survival was high (i.e. >95%) for all treatments except for the highest experimental concentration of glucose, for which a concentration of 30 mg mL−1 resulted in mean mortality of 24%. Mussel spat supplemented with dissolved glucose accumulated up to 30% greater lipid and improved the carbohydrate content per mg g−1 of ash‐free dry weight as much as 3.5 times compared to those in the control treatment, indicating that they were in greater nutritional condition. This demonstration that dissolved glucose can be used to fuel growth by GLM spat at concentrations as low as 10 µg mL−1 suggests that other soluble nutrients may also act as a supplemental feed for cultured juvenile molluscs. Dissolved nutrients have the potential to improve the performance of spat in nursery systems while simultaneously reducing the reliance of cultured microalgae as a sole feed input.

show abstract

Phosphono‐lipid content of the oyster,Crassostrea virginica, in three physiological conditions

Swift¹

1977

Lipids

View full text Add to dashboard Cite

The distribution of lipid‐bound phosphorus between the phosphodiester and phosphonate forms was determined for the oyster in three physiological conditions. The adductor muscle had the highest level of phosphonate phosphorus, 92 μg/g wet weight tissue, or 40.4% of all muscle phospholipids. The total phospholipid level (μg/g wet weight tissue) increased in all tissues of the oyster during starvation, as did the percentage of phosphonolipids in all tissues except the adductor muscle, in which it remained constant. These data suggest that during starvation the phosphonate bonds are conserved at the expense of phosphodiester bonds in oyster lipids.

show abstract

Uptake of glucose and orthophosphate by the American oyster

Cited by 9 publications

References 10 publications

d-Glucose transport across the apical membrane of the surface epithelium inNereis diversicolor

d-Glucose transport across the apical membrane of the surface epithelium inNereis diversicolor

The uptake of dissolved glucose by juvenile green‐lipped mussels (Perna canaliculus)

Phosphono‐lipid content of the oyster,Crassostrea virginica, in three physiological conditions

Contact Info

Product

Resources

About