Composition, accumulation and utilization of yolk lipids in teleost fish

Wiegand, Murray D.

doi:10.1007/bf00122583

Cited by 364 publications

(314 citation statements)

References 114 publications

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“…Eggs with relatively low lipid contents (< 5% of wet weight) which are predominantly polar lipids (60-90% of total lipid on average), and eggs that have higher lipid contents (> 5% of wet weight) that generally have higher levels of neutral lipids, often in the form of oil globules or droplets, in addition to the phospholipidrich yolk lipid Wiegand, 1996a). Eggs from marine fish tend to be smaller, of lower lipid and phospholipid-rich compared to eggs from freshwater species but there are many exceptions to this generalisation.…”

Section: Functionsmentioning

confidence: 99%

“…Exceptions to this pattern are striped bass eggs, whose phospholipids are reported to contain predominantly PtdIns (Gallagher et al, 1998), and sturgeon eggs, which have relatively high PtdEtn (Gershanovich, 1991). The neutral lipids are mainly triacylglycerols with smaller amounts of cholesterol although some lipid -rich eggs have globules that are predominantly steryl and/or wax esters as in gourami or some freshwater Perciformes and striped bass (Anderson et al, 1990;Wiegand, 1996a).…”

Section: Functionsmentioning

confidence: 99%

“…Thus, marine eggs tend to have higher n-3 HUFA levels than freshwater species (Rainuzzo, 1993;Wiegand, 1996a). In contrast, the eggs of most freshwater fish contain higher levels of n-6 PUFA, particularly 20:4n-6 and 18:2n-6, than marine fish eggs (Anderson et al, 1990;Wiegand, 1996a).…”

Section: Functionsmentioning

confidence: 99%

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Metabolism and Functions of Lipids and Fatty Acids in Teleost Fish

Tocher

2003

Reviews in Fisheries Science

2,099

1,718

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Lipids and their constituent fatty acids are, along with proteins, the major organic constituents of fish, and they play major roles as sources of metabolic energy for growth including reproduction, and movement including migration. Furthermore, the fatty acids of fish lipids are rich in ω3 long chain, highly unsaturated fatty acids (n-3 HUFA) that have particularly important roles in animal nutrition, including fish and human nutrition, reflecting their roles in critical physiological processes. Indeed, fish are the most important food source of these vital nutrients for man Thus, the long standing interest in fish lipids stems from their abundance and their uniqueness. This review attempts to summarise our present state of knowledge of various aspects of the basic biochemistry, metabolism and functions of fatty acids, and the lipids they constitute part of, in fish, seeking where possible to relate that understanding as much to fish in their natural environment as to farmed fish. In doing so, it highlights the areas that require to be investigated in greater depth and also the increasing application of molecular technologies in fish lipid metabolism which will fascilitate further advances through molecular biological and genetic techniques including genomics and proteomics.

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Section: Functionsmentioning

confidence: 99%

Section: Functionsmentioning

confidence: 99%

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Metabolism and Functions of Lipids and Fatty Acids in Teleost Fish

Tocher

2003

Reviews in Fisheries Science

2,099

1,718

View full text Add to dashboard Cite

show abstract

“…It is interesting to note that flesh and liver DHA and EPA levels were not different between wild and captive females. The selective transfer and accumulation of DHA and to a lesser extent EPA into fish eggs has been demonstrated and the DHA and EPA rich captive diet probably leads to this large deposition in captive eggs (Johnson, 2009;Sargent et al, 2002;Wiegand, 1996). The higher level of EPA incorporated into the eggs, combined with the lower ARA content, lead to an ARA/EPA ratio less than half that of wild eggs, leading to possible modification in eicosanoid production and subsequent pathways modulation of neural transmission, hypothalamic and immune functions as well as stress resistance (Bell, 2003).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Comparative study of lipids and fatty acids in the liver, muscle, and eggs of wild and captive common snook broodstock

et al. 2015

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In this study, the lipid composition of wild and captive common snook broodstock were investigated to identify potential nutritional deficiencies and formulate suitable diets for captive stocks. Results showed captive snook incorporated significantly more lipid than their wild counterparts. However, cholesterol and arachidonic acid (ARA) levels were significantly lower compared to wild fish, which may impact steroid and prostaglandin production, reproductive behavior and gametogenesis. In eggs obtained from captive broodstock, high docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) levels, associated with low ARA contents were found. As a result, ARA/EPA ratio in captive eggs was less than half of that in wild eggs with the potential for negative consequences on embryo and larval development. In conclusion, large differences were noticed between wild and captive broodstock that may contribute to the reproductive dysfunctions observed in captive snook broodstock (e.g. incomplete oocyte maturation, low milt production and highly variable egg and larval quality). The wild snook survey also identified the presence of hydrocarbons in the liver, which should be further studied to identify a potential impact on the reproductive performances of a vulnerable population like common snook.

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“…For that, improved nutrition, feeding and management of broodstock are essential tools (Bhujel et al, 2007), given that the nutrients used by females during vitellogenesis might impact both the quality and the chemical features of eggs (Tyler & Sumpter, 1996;Wiegand, 1996;Izquierdo et al, 2001) and consequently the progeny development (Pereira et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy

Sousa¹,

Freccia²,

Santos

et al. 2013

R. Bras. Zootec.

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-This study was carried out to evaluate the influence of different levels of digestible energy and digestible protein in diets of Nile tilapia (Oreochromis niloticus) broodstock on offspring growth during sex reversal stage. A total of 2,700 post-larvae (8.2±0.001 mg) derived from breeders fed nine diets with distinct levels of digestible protein (28, 34 and 40% DP) and digestible energy (2,800; 3,400; and 4,000 kcal DE.kg -1 ) were stored in twenty-seven 70 L tanks. After 30 days of growth, their average final weight (AFW, g), average weight gain (AWG, g), final standard length (SL, cm), condition factor (CF), specific growth rate (SGR, %/day), stock uniformity (UNI, %), survival (SUR, %) and sex reversal rate (SRR, %) were measured. Although female nutrition is thought to influence the performance or quality of progeny during early life stages, no influence of diets supplied to broodstock was detected on any parameter. Nonetheless, the offspring presented commercially satisfactory growth rates. Thus, diets containing 28% of digestible protein and 2,800 kcal of digestible energy.kg of diet -1 can be used to feed Nile tilapia broodstock without jeopardizing offspring performance during the sex reversal phase.

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Composition, accumulation and utilization of yolk lipids in teleost fish

Cited by 364 publications

References 114 publications

Metabolism and Functions of Lipids and Fatty Acids in Teleost Fish

Metabolism and Functions of Lipids and Fatty Acids in Teleost Fish

Comparative study of lipids and fatty acids in the liver, muscle, and eggs of wild and captive common snook broodstock

Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy

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