Abstract
Ridgetail white prawn (Exopalaemon carinicauda) are of significant economic importance in China where they are widely cultured. However, there is little information on the basic biology of this species. We evaluated the effect of temperature (16, 19, 22, 25, 28, 31, and 34°C) on the standard metabolic rates (SMRs) of juvenile and adult E. carinicauda in the laboratory under static conditions. The oxygen consumption rate (OCR), ammonia-N excretion rate (AER), and atomic ratio of oxygen consumed to nitrogen consumed (O:N ratio) of juvenile and adult E. carinicauda were significantly influenced by temperature (P 0.05). The O:N ratio in juveniles was significantly higher than that in the adults over the entire temperature range (P <0.05). The temperature coefficient (Q10) of OCR and AER ranged from 5.03 to 0.86 and 6.30 to 0.85 for the adults, respectively, and from 6.09–1.03 and 3.66–1.80 for the juveniles, respectively. The optimal temperature range for growth of the juvenile and adult shrimp was from 28 to 31°C, based on Q10 and SMR values. Results from the present study may be used to guide pond culture production of E. carinicauda.
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