Table III. – Medical treatments for Z. asper at the Besançon Museum. in Reproduction of Zingel asper (Linnaeus, 1758) in controlled conditions: an assessment of the experiences realized since 2005 at the Besançon Natural History Museum

Table III. – Medical treatments for Z. asper at the Besançon Museum.Drug to be dissolved in tank waterDosageTreatment timeTime between treatmentsNumber of treatmentsU.V. sterilizerNaCl5 g/l24 h10 days2Malachite green oxalate0.1 mg/l24 h10 days2Praziquantel3 mg/l24 h10 days2StopCholramine T20 mg/l24 h10 days2Figure 8. – Egg production as a function of age. These results were obtained from the number of eggs laid throughout the breeding season divided by the number of females that laid. The same bloodstocks (born in captivity in 2008) were used for 9 years. The maximum production was obtained at 6 years. The number of females was 17 at the beginning and 2 at the end (Tab. II).