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edulis are fed with microalgae species ( Rhodomonas salina, Isochrysis galbana and Chaetoceros neogracilis), native to the German North Sea around Helgoland. In the Helgoland Oyster Hatchery, the optimal rearing of larvae is ensured by a specifically designed water treatment system and state-of-the-art high density larval rearing tanks. In the last larval phase prior to metamorphosis they are then transferred to settlement tanks, previously equipped with the desired substrate. The larvae produced are then carefully raised and supplied with optimal feed. Optimization of sustainable microalgae production, by minimising resource-use and wasteĭefinition of optimal nutrition conditions for juvenile oysters, by testing different (live) feed compositionsĮffects of genetic diversity of hatchery produced oysters on growth and survival in the field (collaboration with CRC Bretagne Nord in France)ĭevelopment of pre-treatment protocols for imported substrate and broodstock oysters to avoid translocation risksīroodstock oysters are conditioned for reproduction by adjusting diet and ambient temperature. Optimization of broodstock conditioning, by testing light and density effects in the tanks
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Conditioning parameters, nutrient input and contamination treatment are in the focus of current research at the hatchery: After their planktonic phase, oyster larvae are actively searching for a surface to settle on. The larval phase is the most fragile one in the oyster’s life cycle: Only ideal conditions allow for successful growth and survival of the larvae. The research topics addressed within the Helgoland Oyster Hatchery are connected to important parameters for the survival, settlement success and growth of healthy seed oysters. Technology Transfer - From Research to commercial Application Technology Transfer - Offers to the private sector The effect of deformation mechanisms for ice sheet dynamics Six questions we always wanted to ask a climate modeler Oceanographic measurements at the 79°North Glacier Taking a stroll through the underwater woods Research at the furthest reaches of civilization TanDEM-X satellite image - Changes in permafrost landscapes "Ocean acidification is the evil little brother of global warming" Ocean acidification – The evil twin of climate warming