The Israeli Journal of Aquaculture Bamidgeh 56(3), 2004, 209-217

SPAWNING AND LARVAE PRODUCTION OF 
COMMON PANDORA, PAGELLUS ERYTHRINUS L.  


Yusuf Guner*, Osman Ozden, Muhammet Altunok, Ediz Koru and Volkan Kizak

Department of Aquaculture, Faculty of Fisheries, Ege University,35100 Bornova Kampus, 
Izmir, Turkiye 



(Received 29.10.03, Accepted 25.4.04)


Key words: common pandora, egg, larvae, Pagellus erythrinus, reproduction, spawning 


Abstract


Spawning of the common pandora (Pagellus erythrinus L.) in captivity was studied at ambient temperature (21.21.2C) during the breeding season in 1998. Broodstock were cultivated in net fishpens and spawned in large fiberglass tanks (10 m diameter) between June and July. Approximately 33.2 million eggs were collected from 30 mature 4-7 year old females, 97% of which were buoyant healthy eggs with diameters ranging 753-801 mm. The eggs were incubated at 19, 21, or 23C and development and morphological changes were observed until day 50. The best hatching rate (88.9%) was obtained at 19C. Swim bladder inflation occurred 8-20 days after hatching. The average survival at day 50, at an initial density of 40 larvae/l, was 3.2%. Exogenous feeding began on day 3. Larvae were first fed rotifers, Brachionus plicatilis, and later Artemia nauplii. Larvae completed yolk absorption 78 hours after hatching. A green water environment was maintained by introducing cultured microalgae (Nannochloropsis oculata and Tetraselmis suecica). Larvae (13.3 mm) transformed into juveniles (18.71 mm) 29-37 days after hatching. 


* Corresponding author.  E-mail: guner@sufak.ege.edu.tr

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