Lipid composition of yellowtail flounder ( Limanda ferruginea ) in relation to dietary lipid intake

Dwyer, Karen S.; Parrish, Christopher C.; Brown, Joseph A.

doi:10.1007/s00227-003-1101-0

Cited by 16 publications

(9 citation statements)

References 35 publications

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“…In this case, hepatic glycogen deposition could be mediated via lowering of glycogenolytic potential as reduced GP mRNA expression was (Lee and Lee 2004) and rainbow trout (Hilton and Atkinson 1982;Baños et al 1998) fed high carbohydrate diets also exhibit larger HSI and liver glycogen deposition. However, in other species such as red drum (Serrano et al 1992), cod (Hemre et al 1989), sea bass (Dias et al 1998;Peres et al 1999;Peres and Oliva-Teles 2002) and flounder (Dwyer et al 2003), increased HSI has been associated with increased hepatic lipid deposition. No hepatic lipid deposition is apparent in silver sea bream fed high carbohydrate, and it appears that it is only glycogen, not lipid, that contributes to larger liver size.…”

Section: Hsi and Liver Compositionmentioning

confidence: 97%

Influence of dietary carbohydrate level on endocrine status and hepatic carbohydrate metabolism in the marine fish Sparus sarba

Leung

Woo

2011

Fish Physiol Biochem

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Silver sea bream, Sparus sarba, were fed two diets of different carbohydrate levels (2 and 20% dextrin) for 4 weeks, and the effects on organ indices, liver composition, serum metabolite and hormone levels and gene expression profile of key enzymes of carbohydrate metabolism in the liver were investigated. By using real-time PCR, mRNA expression levels of carbohydrate metabolic enzymes including glucokinase (GK, glycolysis), glucose-6-phosphatase (G6Pase, gluconeogenesis), glycogen synthase (GS, glycogenesis), glycogen phosphorylase (GP, glycogenolysis) and glucose-6-phosphate dehydrogenase (G6PDH, pentose phosphate pathway) in liver of sea bream have been examined, and it was found that high dietary carbohydrate level increased mRNA level of GK but decreased mRNA levels of G6Pase and GP. However, mRNA levels of GS and G6PDH were not significantly influenced by dietary carbohydrate. Silver sea bream fed high dietary carbohydrate had higher hepatosomatic index (HSI), liver glycogen and protein, but there were no significant changes in gonadosomatic index (GSI), serum glucose and protein level, as well as liver lipid and moisture level. Pituitary growth hormone (GH) and hepatic insulin-like growth factor I (IGF-I) transcript abundance were assayed by real-time PCR, and it was found that both parameters remained unchanged in fish fed different dietary carbohydrate levels. Serum triiodothyronine (T(3)) and thyroxine (T(4)) were not significantly affected by dietary carbohydrate levels, but lower serum cortisol level was found in fish fed high dietary carbohydrate level. These results suggest that silver sea bream is able to adapt to a diet with high carbohydrate content (up to 20% dextrin), the consumption of which would lead to fundamental re-organization of carbohydrate metabolism resulting in hepatic glycogen deposition.

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Section: Hsi and Liver Compositionmentioning

confidence: 97%

Influence of dietary carbohydrate level on endocrine status and hepatic carbohydrate metabolism in the marine fish Sparus sarba

Leung

Woo

2011

Fish Physiol Biochem

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“…In net tow samples from neighbouring Trinity Bay, 22:6ω3/20:5ω3 ratios of 0.8 were obtained from samples in which centric diatoms dominated, but where dinoflagellates accounted for about 20% of the algal cells (Budge & Parrish 1998). This ratio is considered to be important in the nutrition of marine fish, values of 2 or higher being desirable (Copeman et al 2002, Dwyer et al 2003, Park et al 2006). The importance of 22:6ω3 in relation to 20:5ω3 for these organisms contrasts with the dominance of 20:5ω3 in their food web ( Table 5), suggesting that there is a mechanism for 'trophic magnification' of 22:6ω3 within the food web.…”

Section: Fatty Acidsmentioning

confidence: 99%

Effect of sinking spring phytoplankton blooms on lipid content and composition in suprabenthic and benthic invertebrates in a cold ocean coastal environment

Parrish¹,

Deibel²,

Thompson³

2009

Mar. Ecol. Prog. Ser.

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Lipids were measured in 19 suprabenthic and benthic invertebrate taxa from 5 phyla to determine their responses to a sinking spring diatom bloom. In Conception Bay, as in many areas of coastal Newfoundland, Canada, benthic organisms experience sub-zero temperatures year round. Among specimens collected at depths between 210 and 220 m, the small mysid Erythrops erythrophtalma had, on average, the highest lipid concentration (6% of wet weight), while a holothurian (Order Apodida) had the lowest (0.3%). In E. erythrophtalma, 73% of the lipids were found in the neutral fraction, while in the sea cucumber 68% were polar lipids. The euphausiid Thysanoessa raschii had the highest proportion of essential ω3 fatty acids (41% total fatty acids) while the holothurian had the lowest (21%). Pseudocalanus spp. showed the highest mean value for the C 16 polyunsaturated fatty acid (PUFA) ratio indicative of lipids from nutrient-replete diatoms. The amphipods Acanthostepheia malmgreni and Anonyx spp. responded immediately to each spring bloom with increased total and neutral lipid contents. The mysid Pseudomma truncatum also showed a transient increase in total lipid content, but this occurred much later in the summer. However, P. truncatum, together with the decapod Pandalus borealis, the mysid Mysis mixta, and the polar bivalve Yoldia hyperborea, did respond immediately based on increased proportions of ω3 fatty acids, while the asteroid Ctenodiscus crispatus showed increased ω3 fatty acid proportions in its gonads much later. The chaetognath Parasagitta elegans differed from most other species in that it maintained very similar total lipid and C 16 PUFA proportions throughout the sampling period, suggesting little direct response to the bloom. Thus, we found a variable response to the bloom with respect to phenology, even within orders, which depended upon feeding behaviour and gonadogenesis. KEY WORDS:Fatty acids · Bacillariophyceae · Polychaeta · Copepoda · Malacostraca · Protobranchia · Echinodermata · Chaetognatha Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 391: [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] 2009 survival and growth (Ackman & Kean-Howie 1994, Xu et al. 1994. They are precursors of highly bioactive metabolites and are required for normal membrane structure and function, especially at low temperatures (Hall et al. 2002). Thus, the Arctic marine realm, in which Newfoundland is located (Spalding et al. 2007), is an area of particular interest for work with marine fatty acids and lipid classes. Indeed, the study of food web lipids in the cold waters off the coast of Newfoundland is important and timely given current problems with the ground fishery (e.g. Parsons 2005, Martínez-Murillo & Haedrich 2007) and the increasing interest in aquaculture in this area (e.g. Tlusty et al. 2005, Parrish et al. 2007a.In the present study, we examined the responses of suprabenthic and benthic invertebrates at > 200 m depth near, on ...

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“…Thus, for these fatty acids, temporal variability was greater than depth variability on average, suggesting that changes in the nature of the lipids during transfer to the benthos were comparatively small. Indeed, cluster analysis has revealed that the fatty acid composition of yellowtail flounder Limanda ferruginea in Conception Bay is quite similar to that of plankton and settling particulate matter (Dwyer et al 2003).…”

Section: Changes In the Nature Of Particles During Transfer To The Bementioning

confidence: 99%

Lipid classes and fatty acids in plankton and settling matter during the spring bloom in a cold ocean coastal environment

Parrish¹,

Thompson²,

Deibel³

2005

Mar. Ecol. Prog. Ser.

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) occurred 16 d later. The lipid and PUFA supply to the benthos was over 10 times that accumulated by important amphipod and mysid populations in Conception Bay. In the deep traps, PUFA were maintained at high levels (33 to 35%) throughout the bloom period while bacterial markers were at their lowest (2.3 to 2.9%). A comparison of fluxes showed that over half the PUFA survived transit from 80 to 220 m during the bloom period. These data indicate a rapid transfer of highly nutritious material to the benthos during the spring bloom in Conception Bay.

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Lipid composition of yellowtail flounder ( Limanda ferruginea ) in relation to dietary lipid intake

Cited by 16 publications

References 35 publications

Influence of dietary carbohydrate level on endocrine status and hepatic carbohydrate metabolism in the marine fish Sparus sarba

Influence of dietary carbohydrate level on endocrine status and hepatic carbohydrate metabolism in the marine fish Sparus sarba

Effect of sinking spring phytoplankton blooms on lipid content and composition in suprabenthic and benthic invertebrates in a cold ocean coastal environment

Lipid classes and fatty acids in plankton and settling matter during the spring bloom in a cold ocean coastal environment

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