Assimilation of dissolved glucose from sea water by the sea bass Dicentrarchus labrax and the sea bream Sparus aurata

Diaz, J. P.; Mani‐Ponset, Laurence; Guyot, E.; Connes, R.

doi:10.1007/bf00349677

Cited by 12 publications

(15 citation statements)

References 18 publications

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“…Water uptake, a counterbalance for losses due to hyperosmotic seawater pressure and/or stress conditions, is developed early in marine fish larvae: from 1 DPH in cod (Mangor-Jensen & Adoff 1987), 3-7 DPH in halibut (Tytler & Blaxter 1988;Reitan et al 1994), 3 DPH in sea bream and 4 DPH in sea bass (Diaz et al 1994). This activity has also been reported in cod eggs (Mangor-Jensen 1987), for 4 DPH rainbow trout (Tytler et al 1990) in clear water, and 7 DPH herring in an iso-osmotic environment (Tytler & Bell, in Tytler et al 1990).…”

Section: Drinking and Ingestion Of Dissolved Organicsmentioning

confidence: 99%

“…A positive effect of dissolved organic substances on fish larvae has been documented in clear and green water. Absorption of soluble organics through the gut by drinking larvae increases markedly after mouth opening: glucose in sea bream and sea bass (Diaz et al 1994), glycerol and various neoglucogenic substrates in sea bream , and free amino acids in cod (Fyhn & Serigstad 1987;Fyhn 1989). At correct doses, all of these organics can induce accumulation of large amounts of glycogen in hepatocytes via neoglucogenesis and restore the deficit that occurs in clear-water controls at the end of the prelarval stage.…”

Section: Drinking and Ingestion Of Dissolved Organicsmentioning

confidence: 99%

See 1 more Smart Citation

Uses of Microalgae in Aquaculture

Muller‐Feuga¹,

Robert²,

Cahu³

et al. 2003

Live Feeds in Marine Aquaculture

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Section: Drinking and Ingestion Of Dissolved Organicsmentioning

confidence: 99%

Section: Drinking and Ingestion Of Dissolved Organicsmentioning

confidence: 99%

Uses of Microalgae in Aquaculture

Muller‐Feuga¹,

Robert²,

Cahu³

et al. 2003

Live Feeds in Marine Aquaculture

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“…In European seabass (Dicentrarchus labrax) larvae, the usual decline in amylase activity was reduced when larvae were fed increasing levels of dietary carbohydrates, supplied as maltose and pre-cooked starch (Peres et al, 1996). Also, seabream larvae reared in glucoseenriched sea water immediately after mouth opening showed an enhanced accumulation of glycogen in the hepatocytes (Diaz et al, 1994). The addition of glycerol, a known gluconeogenic precursor, to the rearing water and rotifer culture medium, also resulted in a significant increase of hepatic glycogen content in seabream larvae (Maurizi et al, 2000).…”

Section: Introductionmentioning

confidence: 98%

High-glucose feeding of gilthead seabream (Sparus aurata) larvae: Effects on molecular and metabolic pathways

et al. 2016

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“…In nature, there is dissolved organic matter (DOM) comprised of similar molecules including free amino acids, monosaccharides and short chain, free fatty acids. Although most of these are refractory, there is considerable evidence that many microbes, filter feeders and larval and juvenile fishes consume them for energy, particularly at times of food limitation (Manahan 1983, Feral 1985, Korsgaard 1991, Diaz et al 1994, Otake et al 1995, Kragh & Sondergaard 2004. The infectivity shown by meronts maintained in ASW for 7 d was surprising, since ASW contains only inorganic salts.…”

Section: Discussionmentioning

confidence: 99%

Viability, infectivity and fatty acid synthetic activity of Perkinsus marinus meront cells incubated in estuarine and artificial seawater

Chu¹,

Lund²

2006

Dis. Aquat. Org.

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We investigated the viability and fatty acid synthetic activity of in vitro cultured Perkinsus marinus (Dermo) in lipid-free medium and estuarine water, and the infectivity of P. marinus maintained in artificial seawater (ASW). Viability and fatty acid synthetic activity in 7 d old P. marinus meronts maintained in lipid-free medium and estuarine water were tested. The infectivity of meronts incubated in ASW was examined by first incubating P. marinus meronts in ASW for 2, 3 or 7 d, and then inoculating viable ASW-incubated meronts into the shell cavity of individual oysters Crassostrea virginica. P. marinus infection prevalence and intensity in oysters were determined 9 wk post-inoculation. Heavy mortality occurred in meronts maintained in estuarine water, a drop from an initial value of 100% viable to 7.8 and 6.1% after 3 and 14 d incubation, respectively. Viability was 85 and 67% in meronts maintained in lipid-free medium for 3 and 24 d, respectively. Meronts kept in lipid-free medium for 14 d retained their ability to synthesize fatty acids. Viable meronts incubated in ASW remained infective for up to 7 d. The infection prevalences were 85, 48 and 100%, in the treatments inoculated with viable meronts that were incubated in ASW for 2, 3 and 7 d, respectively. Infection prevalence in the group inoculated with viable meronts immediately after they were transferred to ASW ranged from 61 to 85%. Our results suggest that in nature meronts can survive for at least 14 d outside the host. Viable meronts are not only infective, but are also able to replicate and retain their fatty acid synthetic ability for 7 d. KEY WORDS: Perkinsus marinus · Viability · Infectivity · Fatty acid synthesis Resale or republication not permitted without written consent of the publisherDis Aquat Org 71: [131][132][133][134][135][136][137][138][139] 2006 fatty acid synthetic capability (Soudant & Chu 2001, Chu et al. 2002. The meront stage of this parasite differs from all other parasitic protozoans that rely on their host for essential lipids. P. marinus meronts can synthesize a range of saturated and unsaturated fatty acids, including the essential fatty acid, arachidonic acid (AA) (Soudant & Chu 2001, Chu et al. 2002. The ability of P. marinus to synthesize AA is novel. No other parasitic protozoan has been reported to have such a capability. This capability may be related to the disease transmission processes, since lipids are essential membrane components and comprise energy reserves for growth and development and at times of no or limited nutrient supply.It has long been hypothesized that Perkinsus marinus infective cells can survive in nature for a considerable length of time and remain infective when they enter a new host. However, no study has been conducted to examine the viability and infectivity of water-borne P. marinus infective cells, how long the primary transmission stage meront remains viable in the water column, and whether or not the 'viable' meronts are infective. No intermediary host is known to act as a ...

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Assimilation of dissolved glucose from sea water by the sea bass Dicentrarchus labrax and the sea bream Sparus aurata

Cited by 12 publications

References 18 publications

Uses of Microalgae in Aquaculture

Uses of Microalgae in Aquaculture

High-glucose feeding of gilthead seabream (Sparus aurata) larvae: Effects on molecular and metabolic pathways

Viability, infectivity and fatty acid synthetic activity of Perkinsus marinus meront cells incubated in estuarine and artificial seawater

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