Lipid class and fatty acid content of the Leptocephalus larva of tropical eels

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Lipid class and fatty acid content of the Leptocephalus larva of tropical eels. / Deibel, D.; Parrish, C.C.; Grønkjær, P.; Munk, Peter; Nielsen, Torkel Gissel.

In: Lipids, Vol. 47, No. 6, 2012, p. 623-634.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Deibel, D.; Parrish, C.C.; Grønkjær, P.; Munk, Peter; Nielsen, Torkel Gissel / Lipid class and fatty acid content of the Leptocephalus larva of tropical eels.

In: Lipids, Vol. 47, No. 6, 2012, p. 623-634.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{3d4282d88f284913a1751d39ca620015,
title = "Lipid class and fatty acid content of the Leptocephalus larva of tropical eels",
publisher = "Springer",
author = "D. Deibel and C.C. Parrish and P. Grønkjær and Peter Munk and Nielsen, {Torkel Gissel}",
year = "2012",
doi = "10.1007/s11745-012-3670-5",
volume = "47",
number = "6",
pages = "623--634",
journal = "Lipids",
issn = "0024-4201",

}

RIS

TY - JOUR

T1 - Lipid class and fatty acid content of the Leptocephalus larva of tropical eels

A1 - Deibel,D.

A1 - Parrish,C.C.

A1 - Grønkjær,P.

A1 - Munk,Peter

A1 - Nielsen,Torkel Gissel

AU - Deibel,D.

AU - Parrish,C.C.

AU - Grønkjær,P.

AU - Munk,Peter

AU - Nielsen,Torkel Gissel

PB - Springer

PY - 2012

Y1 - 2012

N2 - The leptocephalus larva of eels distinguishes the elopomorph fishes from all other bony fishes. The leptocephalus is long lived and increases in size primarily <br/>through the synthesis and deposition of glycosaminoglycans. Energy stored during the larval stage, in the form of glycosaminoglycan and lipids, is required to fuel migration, metamorphosis and metabolism of the subsequent glass eel <br/>stage. Despite the importance of energy storage by leptocephali for survival and recruitment, their diet, condition and lipid content and composition is essentially unknown. To gain further insight into energy storage and condition of <br/>leptocephali, we determined the lipid class and fatty acid concentration of larvae collected on a cross-shelf transect off Broome, northwestern Australia. The total lipid concentration of two families and four sub-families of leptocephali <br/>ranged from 2.7 to 7.0 mg g wet weight-1, at the low end of the few published values. Phospholipid and triacylglycerol made up ca. 63 % of the total lipid pool. The triacylglycerol:sterol ratio, an index of nutritional condition, ranged from 0.9 to 3.7, indicating that the leptocephali were in good condition. The predominant fatty acids were 16:0 (23 mol%), 22:6n-3 (docosahexaenoic acid, DHA, <br/>16 mol%), 18:0 (8.2 mol%), 20:5n-3 (eicosapentaenoic acid, EPA, 6.7 mol%), 18:1n-9 (6.4 mol%) and 16:1n-7 (6.3 mol%). The DHA:EPA ratio ranged from 2.4 to 2.9, sufficient for normal growth and development of fish larvae <br/>generally. The leptocephali had proportions of bacterial markers[4.4 %, consistent with the possibility that they consume appendicularian houses or other marine snow that is bacteria rich

AB - The leptocephalus larva of eels distinguishes the elopomorph fishes from all other bony fishes. The leptocephalus is long lived and increases in size primarily <br/>through the synthesis and deposition of glycosaminoglycans. Energy stored during the larval stage, in the form of glycosaminoglycan and lipids, is required to fuel migration, metamorphosis and metabolism of the subsequent glass eel <br/>stage. Despite the importance of energy storage by leptocephali for survival and recruitment, their diet, condition and lipid content and composition is essentially unknown. To gain further insight into energy storage and condition of <br/>leptocephali, we determined the lipid class and fatty acid concentration of larvae collected on a cross-shelf transect off Broome, northwestern Australia. The total lipid concentration of two families and four sub-families of leptocephali <br/>ranged from 2.7 to 7.0 mg g wet weight-1, at the low end of the few published values. Phospholipid and triacylglycerol made up ca. 63 % of the total lipid pool. The triacylglycerol:sterol ratio, an index of nutritional condition, ranged from 0.9 to 3.7, indicating that the leptocephali were in good condition. The predominant fatty acids were 16:0 (23 mol%), 22:6n-3 (docosahexaenoic acid, DHA, <br/>16 mol%), 18:0 (8.2 mol%), 20:5n-3 (eicosapentaenoic acid, EPA, 6.7 mol%), 18:1n-9 (6.4 mol%) and 16:1n-7 (6.3 mol%). The DHA:EPA ratio ranged from 2.4 to 2.9, sufficient for normal growth and development of fish larvae <br/>generally. The leptocephali had proportions of bacterial markers[4.4 %, consistent with the possibility that they consume appendicularian houses or other marine snow that is bacteria rich

U2 - 10.1007/s11745-012-3670-5

DO - 10.1007/s11745-012-3670-5

JO - Lipids

JF - Lipids

SN - 0024-4201

IS - 6

VL - 47

SP - 623

EP - 634

ER -