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1 - 4 of 4 publications
  • Topic:Aquaculture and aquaponics
November 2021
Scientific Reports. - 11(2021), Art. 21544

A duplicated copy of id2b is an unusual sex-determining candidate gene on the Y chromosome of arapaima (Arapaima gigas)

Mateus C. Adolfi; Kang Du; Susanne Kneitz; Cédric Cabau; Margot Zahm; Christophe Klopp; Romain Feron; Rômulo V. Paixão; Eduardo S. Varela; Fernanda L. de Almeida; Marcos A. de Oliveira; Rafael H. Nóbrega; Céline Lopez-Roques; Carole Iampietro; Jérôme Lluch; Werner Kloas; Sven Wuertz; Fabian Schaefer; Matthias Stöck; Yann Guiguen; Manfred Schartl

The Arapaima is an endangered species of interest for sustainable aquaculture. The authors published an improved genome sequence and identified a Y-linked candidate gene for sex determination in males. A PCR test enables genotyping as a new tool for breeding and conservation of the Arapaima. It has already been used to distinguish males from females at the IGB as well.

July 2021
Science of the Total Environment. - 796(2021), Art. 148780

Fulvic acid accelerates hatching and stimulates antioxidative protection and the innate immune response in zebrafish larvae

Thora Lieke; Christian E.W. Steinberg; Sandra Bittmann; Sascha Behrens; Seyed H. Hoseinifar; Thomas Meinelt; Klaus Knopf; Werner Kloas

Improving growth and health parameters by immunostimulants is widely used in older fish, but rarely studied in larvae. Using zebrafish as a model organism, the authors evaluated the effects of exposure to fulvic acids (FAs) on embryonic development. They showed that FA at low to medium concentrations can increase the health of larvae, but becomes detrimental at higher concentrations.

January 2021
Scientific Reports. - 11(2021), Art. 174

Phenol-rich fulvic acid as a water additive enhances growth, reduces stress, and stimulates the immune system of fish in aquaculture

Thora Lieke; Christian E. W. Steinberg; Bo Pan; Irina V. Perminova; Thomas Meinelt; Klaus Knopf; Werner Kloas

The study showed that immunostimulation via gills is possible with fulvic acid, and the high phenolic content improved overall health and stress resistance of fish.

June 2020
Nature Ecology & Evolution. - 4(2020)6, S. 841-852

The sterlet sturgeon genome sequence and the mechanisms of segmental rediploidization

Kang Du; Matthias Stöck; Susanne Kneitz; Christophe Klopp; Joost M. Woltering; Mateus Contar Adolfi; Romain Feron; Dmitry Prokopov; Alexey Makunin; Ilya Kichigin; Cornelia Schmidt; Petra Fischer; Heiner Kuhl; Sven Wuertz; Jörn Gessner; Werner Kloas; Cédric Cabau; Carole Iampietro; Hugues Parrinello; Chad Tomlinson; Laurent Journot; John H. Postlethwait; Ingo Braasch; Vladimir Trifonov; Wesley C. Warren; Axel Meyer; Yann Guiguen; Manfred Schartl

Researchers have succeeded in sequencing the sturgeon genome, delivering a missing piece of the puzzle essential to understanding the ancestry of vertebrates. The genetic material of the sterlet has undergone very little change over the past 300 million years or more.

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