Bahadır Koca, S. et al. 2018. Changes in digestive enzyme activities during different developmental stages of the crayfish Astacus leptodactylus Eschscholtz, 1823. Indian Journal of Fisheries. 65, 2 (Jul. 2018). DOI:https://doi.org/10.21077/ijf.2018.65.2.70290-17.