Effects of Dietary Levels of PUFA Fed to Adult Yellow Perch on the Fatty Acid Composition of Eggs and Larvae Characteristics: New Research Directions

Dąbrowski, Konrad; Rinchard, Jacques; Czesny, Sergiusz J.; Korzeniowska, Małgorzata

doi:10.1007/978-94-017-7227-3_21

Cited by 2 publications

(2 citation statements)

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“…Consequently, specific larval capabilities seem to be pre-determined by the inherent egg composition, which could be detected prior to fertilization. The importance of FA during reproduction and early ontogeny was studied and described for a variety of fish species including percids (e. g., Czesny and Dabrowksi 1998;Dabrowski et al 2015;Kestemont and Henrotte 2015). In Eurasian perch (Perca fluviatilis), modulating effects of dietary FA on the broodstock levels could be detected, which were reflected in the FA composition of the eggs (Henrotte et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Especially the FA are acknowledged as integrative parameters modulating several aspects of early life-history (Dabrowski et al 2015;Kestemont and Henrotte 2015;Schaerlinger and Žarski 2015). The FA, especially the highly unsaturated FA (HUFA) are important structural components, serve as nutrient reserves and are precursors of eicosanoids (Bell et al 1986;Tocher 2003).…”

Section: Introductionmentioning

confidence: 99%

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Fate or independency: is batch-specific larval performance determined by egg traits? A case study in farmed pikeperch (Sander lucioperca)

Schaefer

Tielmann

Overton³

et al. 2019

Aquacult Int

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Fish embryos and larvae undoubtedly depend on maternal provisioning of essential egg components, such as fatty acids (FA), during early ontogeny. But which aspects and stages of batch-specific larval development are modulated by these inherent oocyte traits? This question is of major importance from an ecological, as well as from an aquacultural perspective. We examined the effects of batch-specific non nuclear-genetic egg traits (fatty acid (FA) profiles, egg size, mtDNA fragmentation, cortisol content) already in unfertilized oocytes of pikeperch (Sander lucioperca) and studied their influence on survival (15 dph) and larval performance (length at hatch, stress resistance, first feeding, swimbladder inflation rate, yolk sac and lipid droplet size, growth in weight and length) after hatching under stable laboratory conditions (n = 12 batches). While larval survival and performance were independent of mtDNA fragmentation and cortisol levels, FA profiles affected specific larval traits. Especially FA of the neutral fraction were positively correlated with larval size and growth (16:0, 18:0, 22:1n-9, total saturated FA), swimbladder inflation (arachidonic acid 20:4n-6, total FA) and early first feeding (16:0, 18:0, total saturated FA). Important FA of the polar fraction included 15:0 and 16:1n-7, which showed alternate effects on larval survival, first feeding and growth (length). Furthermore, larval length at hatch was positively correlated with egg diameter. Other larval parameters (yolk sac and lipid droplet size and stress response) were not or only marginally affected by egg traits. Consequently, high oocyte FA deposition fuels fast rates of growth and development during early ontogeny. On the other hand, larvae develop independently of assumed disadvantageous properties (cortisol content, mtDNA damage). Knowledge of this relation allows for the improvement of aquaculture practice, as well as predicting recruitment success in the wild.

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Section: Discussionmentioning

confidence: 99%