Amur ide ( Leuciscus waleckii ) lives in alkali-saline water (pH = 9.6) the Lake Dali and spawns freshwater rivers after migration annually. During spawning migrations, not only experience osmoregulation modification from to but also deal with energy prioritization for basal metabolism gonadal development. To achieve an optimal cost-benefit balance, a series of modifications are needed. This st...

In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p>0.05). Our...