Total lipids and lipid classes of fish roe

Kaitaranta, Jukka K.; Ackman, R. G.

doi:10.1016/0305-0491(81)90376-x

Cited by 81 publications

(68 citation statements)

References 21 publications

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“…Similarly, PL increased with GSI in Baltic herring and farmed trout (Kaitaranta & Ackman 1981). The variation in proportion of PL during a complete reproductive cycle is not yet described in cod; an increase in absolute content of PL from MIII to MIV and in relative content from MIV to MV was reported for Baltic cod (Shatunovskiy 1971).…”

Section: Investment Of Lipid Energy In Reproductionmentioning

confidence: 93%

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Røjbek¹,

Jacobsen²,

Tomkiewicz³

et al. 2012

Mar. Ecol. Prog. Ser.

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This study describes lipid composition and antioxidants of Baltic cod Gadus morhua L. during the reproductive cycle, and investigates whether they reflect its dominant prey and whether levels of fatty acids important for reproductive performance were low. Reasons for a shift in peak spawning time of Baltic cod from spring/early summer to midsummer since the early 1990s remain unresolved and may partly be diet related. This study demonstrated that a substantial amount of lipid was invested in cod ovarian development, and that lipid composition varied substantially with the reproductive cycle. Selective retention of the essential fatty acids docosahexaenoic acid (DHA) and arachidonic acid (ARA) in ovaries during maturation was evident, but despite mobilization from the liver, ARA levels were low in ovaries during late maturation and spawning. Astaxanthin and α-tocopherol accumulated in cod ovaries and decreased in late maturing and spawning fish, most likely due to their antioxidant protection activity. The fatty acid composition of cod liver reflected its clupeid prey. The ratio of 18:1n-9 to DHA was almost twice as high in sprat as in herring and indicated the ratio of sprat and herring in cod diet, while the level of 16:1n-7 and astaxanthin indicated the presence of the isopod Saduria entomon in cod diet. It is likely that food web alterations in the Baltic ecosystem related to environmental and hydrographic changes caused a decrease in ARA availability. Low ARA content coincides with cod ovarian development in the central Baltic Sea, and may be associated with the delay in spawning and affect egg and larval survival; however, this needs further verification in experimental studies.

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Section: Investment Of Lipid Energy In Reproductionmentioning

confidence: 93%

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Røjbek¹,

Jacobsen²,

Tomkiewicz³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…For example, in rainbow trout, 2 the relative abundance of ovarian phospholipids increases compared with that of TAGs during ovarian development (Kaitaranta and Ackman, 1981;Wiegand and Idler, 1982;Riazi and Fremont, 1988;Nassour and L6ger, 1989). Steady changes in proportions of individual fatty acids have been observed by repeated sampling throughout ovarian development in Baltic herring (Kaitaranta and Linko, 1984), landlocked Atlantic salmon (Wiegand and Idler, 1985) and northern pike (Schwalme et al, 1993).…”

Section: General Considerations and Interpretive Problemsmentioning

confidence: 99%

“…Interspecific comparison of egg lipid contents is thus problematic, and is not emphasized here. In general, higher egg lipid contents are associated with longer incubation periods (Kaitaranta and Ackman, 1981;Tocher and Sargent, 1984).…”

Section: General Considerations and Interpretive Problemsmentioning

confidence: 99%

“…Interestingly, the activity of ovarian LPL was very low in the October sample in Black and Skinner's (1987) study despite the fact that the gonadosomatic index (GSI) was 6.8. Because trout ovaries already contain substantial proportions of TAG at this stage of development (Kaitaranta and Ackman, 1981;Wiegand and Idler, 1982;Nassour and L6ger, 1989), perhaps endogenous synthesis of TAG, which has been demonstrated in trout ovaries (Wiegand and Idler, 1982), is of quantitative significance at this time. VLDL induction by oestradiol has also been reported in eels (Burzawa-G&ard et al, 1994).…”

Section: Mechanistic Aspectsmentioning

confidence: 99%

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Composition, accumulation and utilization of yolk lipids in teleost fish

Wiegand

1996

Rev Fish Biol Fisheries

363

277

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“…Ovarian recrudescence in north-temperate fish creates a large demand for EFA because mature ovaries often comprise as much as 25% of body weight and contain up to 10 % of wet weight as lipids (Kaitaranta and Ackman 1981;Henderson and Tocher 1987). Furthermore, the ovarian lipids of many fish consist predominantly of PL which typically contain large amounts of n-3 EFA (Fogerty et al 1986;Henderson and Tocher 1987;Schwalme and Mackay 1992).…”

Section: Introductionmentioning

confidence: 97%

Seasonal dynamics of fatty acid composition in female northern pike (Esox lucius L.)

1993

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Abstract. Seasonal changes in the fatty acid composition of neutral and polar lipids were measured in the ovary, liver, white muscle, and adipopancreatic tissue of northern pike. The role of environmental and physiological factors underlying these changes was evaluated. From late summer (August-September) to winter (JanuaryMarch), the weight percentage of n-3 polyunsaturated fatty acids (especially 22: 6n3) declined significantly in the neutral lipids of all somatic tissues examined. However, large quantities of n-3 polyunsaturated fatty acids accumulated in the recrudescing ovaries during fall and the weight percentage of n-3 polyunsaturated fatty acids in ovary polar lipids also increased significantly. Additionally, the n-3 polyunsaturated fatty acid content of somatic polar lipids increased significantly during fall due to increases in the total polar lipid content of the somatic tissues. This suggests that during fall n-3 polyunsaturated fatty acid, are diverted away from somatic neutral lipids and thereby conserved for use in ovary construction and for incorporation into tissue polar lipids. The percentage of n-3 polyunsaturated fatty acid in ovary neutral lipids also declined during fall and early winter, perhaps as an adaptation to conserve these fatty acids for storage in oocyte polar lipids and later incorporation into cellular membranes of the developing embryo. Reductions in the n-3 polyunsaturated fatty acids content of somatic and ovarian neutral lipids during fall were compensated for specifically by increases in the percentage of monounsaturated fatty acids rather than saturated fatty acids. This suggests that the ratio of saturated to unsaturated fatty acids in pike neutral lipid, is regulated physiologically, and hence may influence the physiological functioning of these lipids. During fall and early winter the percentage of saturated fatty acids declined significantly in the polar Abbreviations: AP, adipopancreatic; BHT, butylated hydroxytoluene; CI, confidence interval; EFA, essential fatty acids; MUFA, monounsaturated fatty acids; NL, neutral lipids; PL, polar lipids; PUFA, polyunsaturated fatty acids; SFA, saturated fatty acids Correspondence to: K. Schwalme, Alberta Environmental Centre, Bag 4000, Vegreville, Alberta, Canada, TOB-4L0 lipids of all tissues examined. This change was consistent with the known effects of cold acclimation on the fatty acid composition of cellular membranes. As the ovaries were recrudescing from September to January, liver polar lipids exhibited significant decreases in the percentage of total polyunsaturated fatty acids and n-3 polyunsaturated fatty acids and increases in monounsaturated fatty acids, and acquired a fatty acid composition very similar to that of ovary polar lipids. Therefore, seasonal changes in the percentage of polyunsaturated and monounsaturated fatty acids in liver polar lipids probably reflect the liver's role in vitellogenesis rather than the effects of temperature on membrane fatty acid composition. At all times of year, the fatty acid com...

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Total lipids and lipid classes of fish roe

Cited by 81 publications

References 21 publications

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Composition, accumulation and utilization of yolk lipids in teleost fish

Seasonal dynamics of fatty acid composition in female northern pike (Esox lucius L.)

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