Lipid dynamics in early life stages of the icefish Chionodraco hamatus in the Dumont d’Urville Sea (East Antarctica)

Lipids play a crucial role in polar regions and are of particular importance in early life stages of Antarctic fish. This work presents the significance of lipids and fatty acids (FAs) in the early life stages of the icefish Chionodraco hamatus . Analysis of lipid classes (polar lipids, PL; choleste...

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Bibliographic Details
Published in:Polar biology 2017-02, Vol.40 (2), p.313-320
Main Authors: Giraldo, Carolina, Boutoute, Marc, Mayzaud, Patrick, Tavernier, Eric, Quang, An Vo, Koubbi, Philippe
Format: Article
Language:English
Subjects:
Analysis
Biomedical and Life Sciences
Chionodraco hamatus
Developmental stages
Earth Sciences
Ecology
Energy storage
Fatty acids
Fish
Larvae
Life Sciences
Lipids
Microbiology
Nutrition
Oceanography
Original Paper
Plant Sciences
Polar environments
Predation
Sciences of the Universe
Zoology
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Summary:Lipids play a crucial role in polar regions and are of particular importance in early life stages of Antarctic fish. This work presents the significance of lipids and fatty acids (FAs) in the early life stages of the icefish Chionodraco hamatus . Analysis of lipid classes (polar lipids, PL; cholesterol, Chol; and triacylglycerol, TAG) suggested different energy allocation strategies in preflexion (25 mm). Structural PL dominated lipid dynamics for preflexion larvae, indicating that small individuals allocate the majority of energy toward somatic growth. Conversely, postflexion larvae appear able to switch between growth (contribution of PL) and energy storage (contribution of TAG) strategies. The condition index ratio TAG/Chol varied from 0.2 to
ISSN:0722-4060
1432-2056
DOI:10.1007/s00300-016-1956-4