Influence of salinity fluctuations on the embryonic and larval development of pike Esox lucius (Esocidae)

Resumo

It has been revealed that fluctuations of salinity within the ecological norm positively affect the embryonic and larval development in pike Esox lucius. Within the optimal range of salinity (0−2‰ with fluctuation period of 12 h), compared to the constant optimal salinity (2‰), the growth and development rate accelerate, the survival rate of embryos and larvae increase especially during the critical stages of development, and the variability of sizes of embryos and larvae decreases.