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

Maja crispata (Risso 1827)’nın larval gelişimi ve yaşama oranı üzerine yem:larva oranının etkileri incelenmiştir. Denemeler 21,6 ± 0,5°C su sıcaklığında yapılmıştır ve larvalar beş yem:larva oranı [5 Artemia/larva (A1), 10 Artemia/larva (A2), 15 Artemia/larva (A3), 20 Artemia/larva (A4) ve 25 Artemia/larva (A5)] ile beslenmişlerdir. Tüm gruplarda, zoe I safhası 3 gün, zoe II safhası 5 gün sürmüştür. Megalop evresi tüm gruplarda 6 günde tamamlanmıştır ve larvaların juvenil evresine geçişleri A1 ve A2 gruplarında 13-14 günde; A3, A4 ve A5 gruplarında ise 12-14 günde tamamlanmıştır. Bu çalışma yem:larva oranının M. crispata larvalarının yaşama oranlarını olumsuz etkilediğini (P

Maja crispata (Risso 1827) (Crustacea: Majaidae)’nın larval gelişimi ve yaşama oranı üzerine yem: Larva oranının etkileri

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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