Şen, Halil Ege University - Faculty of Fisheries - Department of Aquaculture, Turkey , Özatalay, Seçil Ege University - Faculty of Fisheries - Department of Aquaculture, Turkey

Effects of prey: larva ratio on larval development and survival rate of Maja crispata (Risso 1827) (Crustacea: Majaidae)

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Effects of prey: larva ratio on larval development and survival rate of Maja crispata (Risso 1827) were investigated. The experiments were performed at 21.6±0.5°C, and the larvae were fed with five prey: larva ratios [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) and 25 Artemia/larva (A5)]., The stage zoea I lasted within 3 days and zoea II stage occurred in 5 days in the all experimental groups. Furthermore, the megalopa stage took place at the same duration (6 days) for all groups. Although, the larvae reached to the juvenile stage in 13-14 days at A1 and A2 groups, within 12-14 days at A3, A4 and A5 groups. This experiment presented that prey: larva ratio affected to the larval survival rates in M. crispate (P 0.05), but did not affect the developmental duration.

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Maja crispata , spider crab , feeding , development , survival rate , larval rearing

Ege Journal Of Fisheries an‎d Aquatic Sciences

76