Pilot-scale spawning and fry production of blue-fin porgy, Sparidentex hasta (Valenciennes), in Kuwait

Ontogenetic development of digestive enzymes in Sobaity sea bream Sparidentex hasta larvae under culture condition

“…The survival rate observed in this study was in range of other reported Sparids, but more than the maximum value of the range showed previously for this species (8.9%-12.3% in 60-day old juvenile) at an average initial density of 57 hatched larvae (Teng et al, 1999). The survival rates varied among other Sparids: in sharpsnout sea bream 21.7% by 50 DAH (Suzer et al, 2007a) and in white sea bream 6% by 48 DAH (Guerreiro et al, 2010).…”

“…In the present study, 40-days old Sobaity sea bream larvae reached to 18.80 mm and 32.94 mg in length and weight, respectively, at 22°C. The length growth was relatively faster than previous study where average total length was measured 17 mm at 40 DAH at 18-26°C (Teng et al, 1999). The surprising observation was that in both experiments the larvae were reared under similar feeding protocols with the exception of temperature which was at higher level in previous study.…”

“…After 24 h of incubation, newly hatched larvae were divided into new 4 * 2 * 1.25 m (length_width_height) cement pools with a stock of 50 larvae/l. Larval rearing was done according to previous study (Teng et al, 1999) with some modification. Briefly, microalgae Nannochloropsis sp.…”

“…Like most marine fish, rearing of Sobaity sea bream larvae heavily relies on the use of live food, such as rotifer and Artemia. The best survival rate was reported to be around 12.3% for this species at 60 DAH (Teng et al, 1999). However, in recent years, new nutritional programs have been evaluated using artificial diets during the early stages of Sobaity sea bream in order to reduce production cost, to allow a more reliable nutritional food value and to achieve a better larval growth and performance.…”

Studies on the effect of using the rotifer, Brachionus plicatilis , treated with different nutritional enrichment media and antibiotics on the growth and survival of blue-fin sea bream, Sparidentex hasta (Valenciennes), larvae

“…Both of the broodstock tanks spawned naturally without any hormonal induction. More specific details on broodstock, spawning and egg incubation are given in Teng, El‐Zahr, Al‐Abdul‐Elah & Almatar (1999).…”