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...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℃） 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 atornic ratio of oxygen consumed to nitrogen consumed （O：N ratio） of juvenile and adult E. carinicauda were significantly influenced by temperature （P〈0.05）. Both the OCR and AER of juveniles increased significantly with increasing temperature from 16 to 34℃, but the maximum OCR for adults was at 31℃. Juvenile shrimp exhibited a higher OCR than the adults from 19 to 34℃. There was no significant difference between the AERs of the two life-stages from 16 to 31 ℃ （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 （Q_10） 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℃, based on Q_10 and SMR values. Results from the present study may be used to guide pond culture production ofE. carinicauda.展开更多
基金Supported by the National Key Technology Research and Development Program of China(No.2011BAD13B01)the National Natural Science Foundation of China(General Program)(No.41376165)the China Agriculture Research System CARS-47
文摘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℃） 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 atornic ratio of oxygen consumed to nitrogen consumed （O：N ratio） of juvenile and adult E. carinicauda were significantly influenced by temperature （P〈0.05）. Both the OCR and AER of juveniles increased significantly with increasing temperature from 16 to 34℃, but the maximum OCR for adults was at 31℃. Juvenile shrimp exhibited a higher OCR than the adults from 19 to 34℃. There was no significant difference between the AERs of the two life-stages from 16 to 31 ℃ （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 （Q_10） 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℃, based on Q_10 and SMR values. Results from the present study may be used to guide pond culture production ofE. carinicauda.
文摘为研究复合污染下双齿围沙蚕（Perinereis aibuhitensis）的代谢特征,判断其用于复合污染监测、修复的潜在性,将双齿围沙蚕暴露于重金属-石油烃复合污染20天,测定其耗氧率、氨氮排泄率和O：N比对复合污染的响应。结果表明：0-1.00 mg/L的Cd和0-0.20 m L/L的石油烃不影响双齿围沙蚕的代谢及其代谢底物,2种污染物也无交互效应。因此,双齿围沙蚕对重金属-石油烃复合污染不敏感,是一个耐污种类;将双齿围沙蚕直接暴露于污染水体的实验将低估其耐污性。利用双齿围沙蚕进行生物监测并不合适,它更适用于生物修复重金属-石油烃复合污染。
