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Media type:
E-Article
Title:
Pikeperch larviculture (Sander lucioperca [L., 1758]) with Brachionus plicatilis (Mueller, 1786) (Rotifera) and Apocyclops panamensis (Marsh, 1913) (Copepoda)
Contributor:
Ballesteros‐Redondo, Laura;
Palm, Harry W.;
Bährs, Hanno;
Wacker, Alexander;
Bischoff, Adrian A.
imprint:
Wiley, 2023
Published in:Journal of the World Aquaculture Society
Language:
English
DOI:
10.1111/jwas.12940
ISSN:
0893-8849;
1749-7345
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>The effect of live feed diets containing <jats:italic>Brachionus plicatilis</jats:italic> (B) and <jats:italic>Apocyclops panamensis</jats:italic> (A) was investigated on pikeperch larval survival, growth, and fatty acid composition in two experiments (E1 and E2). Up to six different diets were provided to the larvae, in which the letters of the diet names represent the live feed organisms as mentioned above and the subsequent number of feed organisms per larva and day. In E1, start cultures with 35 larvae/L were supplied with two diets (B200 and B100 + A100) 7 days until 10 days post hatch (dph). In E2, 50 larvae/L were fed six diets, B280 + A120, B340 + A60, B400, B420 + A180, B510 + A90, and B600. The highest survival and specific growth rates (SGR) occurred in B200 (E1). In E2, B340 + A60 performed best. A trend of increasing survival rates was found in E1 from 68.9% (B100 + A100) to 71.6% B200 and in E2 from 64.0% (B280 + A120) to 93.7% (B340 + A60). Larval SGR tended to increase with higher shares of dietary <jats:italic>B</jats:italic>. <jats:italic>plicatilis</jats:italic> in both experiments. The polyunsaturated fatty acid, linoleic acid (LA), followed the same pattern as survival and SGR increasing until a plateau was reached, indirectly indicating a feeding threshold. <jats:italic>B</jats:italic>. <jats:italic>plicatilis</jats:italic> provided the LA to pikeperch larvae, which seemed to play an important role in this feeding period. Consequently, a live feed diet should contain at least 340 <jats:italic>B</jats:italic>. <jats:italic>plicatilis</jats:italic> ind. larva<jats:sup>−1</jats:sup> day<jats:sup>−1</jats:sup> and 6.3 <jats:italic>B</jats:italic>. <jats:italic>plicatilis</jats:italic> per milliliter until 10 dph to improve pikeperch larviculture.</jats:p>