Optimized application of rotifers Brachionus plicatilis for rearing pikeperch Sander lucioperca L. larvae

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F19%3A43899237" target="_blank" >RIV/60076658:12520/19:43899237 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s10499-019-00420-3" target="_blank" >https://link.springer.com/article/10.1007/s10499-019-00420-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10499-019-00420-3" target="_blank" >10.1007/s10499-019-00420-3</a>

Result language

angličtina

Original language name

Optimized application of rotifers Brachionus plicatilis for rearing pikeperch Sander lucioperca L. larvae

Original language description

This study aimed to optimize the use of euryhaline rotifer Brachionus plicatilis for rearing larval pikeperch Sander lucioperca L. We assessed motility of rotifers under salinities of 0 parts per thousand, 2 parts per thousand, 4 parts per thousand, 8 parts per thousand, and 16 parts per thousand over a 6-h period. Rotifers stocked into freshwater were completely immotile within 2 h. The motility of rotifers after 6 h was 10 +/- 2.27% at 2 parts per thousand, 35 +/- 5.58% at 4 parts per thousand, 79 +/- 30.35% at 8 parts per thousand, and 92 +/- 1.98% at 16 parts per thousand. A second trial quantified the effect of the target salinity levels on pikeperch gut fullness over the course of 11 h. The gut fullness of larvae fed with rotifers was significantly lower at 8 parts per thousand salinity than in other tested groups. Salinity of 16 parts per thousand resulted in 100% mortality. Survival and growth of pikeperch larvae from 4 to 11 days post-hatching (DPH) was analyzed at low (2 parts per thousand and 4 parts per thousand) and medium (8 parts per thousand) salinity. Differences in larval performance under tested salinities were found in survival (S), total length, SGR, eye diameter, myotome height, and gut fullness. The highest mean survival (S) and specific growth rate (SGR) were obtained at 2 parts per thousand (S = 64%; SGR = 10 +/- 5.4% day(-1)) and 4 parts per thousand (S = 65%; SGR = 8.23 +/- 3.4% day(-1)) salinity and significantly differed from 8 parts per thousand (S = 36%; SGR = 5 +/- 2.3% day(-1)) and control (S = 34%; SGR = 7 +/- 3% day(-1)) at 11 DPH. At the conclusion of the trial (11 DPH), larvae of all exposures and control presented normal histology with no signs of pathology. Morphometric analyses revealed significant differences in brush border and fold height of anterior intestine among treatment groups. Larvae at 2 parts per thousand salinity showed significantly higher intestinal fold height (31.2 +/- 5.40 mu m) compared to those at 4 parts per thousand (26.5 +/- 6.11 mu m), 8 parts per thousand (26.3 +/- 4.52 mu m), and control (22.8 +/- 5.13 mu m) (p ? 0.05). Larvae at 4 parts per thousand salinity had significantly higher brush border height (2.50 +/- 0.73 mu m) compared to those at 2 parts per thousand (2.27 +/- 0.63 mu m) and 8 parts per thousand (1.87 +/- 0.44 mu m) salinity and control (1.66 +/- 0.56 mu m) (p &lt; 0.05). The results showed 2 parts per thousand and 4 parts per thousand salinity supported higher numbers of motile B. plicatilis and higher larval survival and growth rate to 11 DPH.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40103 - Fishery

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Aquaculture International

ISSN

0967-6120

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

4

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

1137-1149

UT code for WoS article

000476712200019

EID of the result in the Scopus database

2-s2.0-85068859518