EGYPT COMPARATIVE EUROPEAN SEABASS WILD COLLECTED, NIOF MARINE HATCHERY AND GAFRD K21 MARINE HATCHERY PRODUCED FRY GROWTH AND PHYSIOLOGY

Salem^*, Ahmed Md.; El-Bermawi^**, N. M.; Abdelsalam^***, N. R; Abokadah^**, M. S.

^*Fish Physiology Lab., Fisheries Division, National Institute of Oceanography & Fisheries (NIOF), Qayet Bay Castle, El-Anfoshy, Alexandria, Egypt.; ^**Animal and Fish Production Dept.; ^***Agricultural Botany Dept., Faculty of Agriculture (Saba Basha) Alexandria University, Alexandria, Egypt. ^*Emails: am.salem@niof.sci.eg

Egypt, the 10^th world aquaculture producer is also the 1^st Mediterranean Sea, Arab and African aquaculture producer (FAO 2016). Egypt marine aquaculture still depending on fry collected from natural resources (95.437 million fry, only 0.797 million fry of them recorded as Seabreams and Seabass fry); although Egypt had 6 hatcheries producing 8.906 million fry, only 3.500 million were Seabass fry in 2015 (GAFRD 2017). Not enough or misbalanced or low quality live feeds and microdiets affecting negatively marine hatcheries larval productivity and quality (Salem 2014; Salem and Ibrahim 2017).

The present study conducted in Fish Physiology Lab., Fisheries Division, National Institute of Oceanography & Fisheries (NIOF), Qayet Bay Castle, El-Anfoshy, Alexandria, Egypt. The present study was conducted using one thousand and five hundreds fry from 3 sources and transferred to the lab., the 1st fry group were collected from the wild habitat in El- Meadya region, El- Behira Gov. from the wild fry capture fisheries., the 2nd fry group were 94 (dph) day post hatching produced in the Marine NIOF Hatchery, El- Anfoushy, Alexandria from induced spawning and the 3rd group fry were 94 dph produced in the Marine GAFRD Hatchery, Km 21 Abou Talat, Alexandria, Egypt from induced spawning. Fry samples were randomly collected to statistically deteremine the length, weight growth and physiology performances.

The comparative effects of European seabass (D. labrax) fry sources (wild and two hatcheries) and its impacts on length and weight growth parameters; total length in cm, standard length in cm, body width in cm, total weight, gutted weight in gm, hepatosomatic and vesrosomatic indexes. The wild collected fry achieved the best significant (P < 0.05) results in all this growth parameters while the NIOF marine hatchery produced fry achieved the best significant (P < 0.05) results in all this physiology parameters.