| Autor: |
M. Pelard, R. Brun, Patrick Williot, T. Rouault, D. Mercier |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Biology and Conservation of the European Sturgeon Acipenser sturio L. 1758 ISBN: 9783642206108 |
| DOI: |
10.1007/978-3-642-20611-5_28 |
| Popis: |
This chapter reports on the first successful larval rearing of A. sturio carried out in 1995. Four food items (two live prey and two compound diets) and water temperature were tested as first feeding, but with the constraint of saving as many fish as possible. As Artemia salina nauplii were first observed in the digestive tract, nauplii were added to all other batches. Nauplii alone provided the best growth until 23 days-post-hatch (dph). Water temperature of 21°C versus 17.5°C increased growth and mortality until 37 dph. Best survival post short weaning (3 days) at 17.5°C, depending on age at weaning initiation, was for 55 dph fish. For 50 dph fish, long weaning (3 weeks) provided better growth and survival than short weaning (3 days). Frozen chironomids proved to be impact-free on fish between 0.6 g and 2.9 g. Some conclusions are drawn for further improvements in larval rearing experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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