Use this identifier to quote or link this document:

Survival, development and growth of larvae of the blue swimmer crab, Portunus pelagicus, cultured under different photoperiod conditions
Andrés Roig, Mireia; Rotllant Estelrich, Guiomar; Zeng, Chaoshu
IRTA. Recerca i Tecnologia Agroalimentàries
The blue swimmer crab is a commercially important species of the tropical Indo-Pacific regions that shows substantial potential as a candidate species for aquaculture. Optimization of larval rearing conditions, including photoperiod, is therefore important to establish a method for the intensive hatchery culture of this species. Newly hatched larvae of Portunuspelagicus in first zoeal stage (ZI) were reared under five photoperiod regimes 0L: 24D, 6L: 18D, 12L: 12D, 18L: 6D, and 24L: 0D (5 replicates per treatment) till they metamorphosed to megalopae (ranged from 8.5 ± 0.3 days (18L: 6D) to 10.8 ± 1.8 days (0L: 24D) at 29 ± 1 °C). Daily, larvae of each treatment were fed an identical diet of mixed rotifer and Artemia nauplii, and the survival and molt to successive stages was monitored. Newly hatched ZI larvae of P. pelagicus could successfully develop to the megalopal stage under all tested photoperiod conditions, but we detected significant differences in survival among treatments (p & 0.05). The constant darkness treatment (0L: 24D) had the lowest (19.2 ± 7.2%, mean ± S.E.) cumulative survival from ZI to the megalopal stage, while the 18L: 6D treatment achieved the highest survival (51.2 ± 23.6%). Similarly, the photoperiod significantly affected zoeal development. Constant darkness led to the longest cumulative zoeal duration (10.8 ± 1.8 days), whereas the 18L: 6D treatment rendered the shortest larval development (8.5 ± 0.3 days). In addition, larvae reared under constant darkness resulted in the smallest megalopae (carapace length = 1.44 ± 0.09 mm) and the lowest dry weight (0.536 ± 0.188 mg). In conclusion, photoperiod significantly affected the survival, development, and growth of P. pelagicus zoeal larvae. Constant darkness led to the lowest larval survival and developmental rate, while a photoperiod regime of 18L: 6D appeared to be the most suitable condition for the rearing of zoeal larvae of P. pelagicus.
63 - Agricultura. Silvicultura. Zootècnia. Caça. Pesca
Crustacis -- Cria i desenvolupament
L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:
19 p.
Reproducció del document publicat a:

Full text files in this document

Files Size Format
AndresM-survival_2010.pdf 201.1 KB PDF

Show full item record

Related documents

Other documents of the same author

Andrés Roig, Mireia; Gisbert Casas, Enric; Díaz, Manuel; Moyano, Francisco J.; Estévez García, Alicia; Rotllant Estelrich, Guiomar;  
Andrés Roig, Mireia; Estévez García, Alicia; Simeó, Carles G.; Rotllant Estelrich, Guiomar
Norambuena Filcun, Fernando; Estévez García, Alicia; Andrés Roig, Mireia; Carazo Ortega, Ignacio; Duncan, Neil
Estévez García, Alicia; Simeó, Carles G.; Rotllant Estelrich, Guiomar;  Andrés Roig, Mireia