Effect of tank colour on larval performance of the Amazon River prawn Macrobrachium amazonicum
Effect of tank colour on larval performance of the Amazon River prawn Macrobrachium amazonicum
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DOI：
10.1111/are.12048
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发表时间：
2014-05
影响因子：
2
通讯作者：
C. Maciel;W. Valenti
中科院分区：
文献类型：
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作者：
C. Maciel;W. Valenti
研究了不同颜色（白色、黄色、红色、蓝色、绿色和黑色）对亚马逊沼虾（Macrobrachium amazonicum）幼虾生长的影响。每天用新孵化的卤虫无节幼体喂养幼虫。孵化池颜色影响池内光照强度、卤虫无节幼体（AN）的摄食量、幼体发育、存活、增重和仔虾生产力（PL）。卤虫无节幼体在绿色池和红色池中的总消耗量分别比对照高30%和45%。AN消耗量在坦克颜色之间的显著差异（P = 0.0006）表明，M。亚马逊幼虫是视觉捕食者。黑色、蓝色和绿色坦克的存活率更高，达到75%以上。然而，在黑色罐中获得了最高的生产率（80.1 PL L-1）。较浅颜色的槽和过度的亮度（槽底超过2 μmol s−1 m2）似乎是幼虫的重要应激因素，有助于降低存活率和生产力。结果表明，饲养M.在黑缸中的amazonicum将改善幼虫状况，确保更大的生产力的后期幼虫和降低卤虫消费，提高技术和经济可行性。
The aim of this study was to evaluate the effects of hatchery-tank colours (white, yellow, red, blue, green and black) on the performance of larval culture of Macrobrachium amazonicum. The larvae were fed daily with newly hatched Artemia nauplii. The hatchery-tank colours affected the light level inside the tanks, the consumption of Artemia nauplii (AN), larval development, survival, mass gain and productivity of postlarvae (PL). The overall consumption of Artemia nauplii per larva during the larval cycle was 30% and 45% higher in the green and red tanks respectively. The significant variation of AN consumption among tank colours (P = 0.0006) indicates that M. amazonicum larvae are visual predators. Survival was higher in the black, blue and green tanks, reaching more than 75%. However, the highest productivity was obtained in the black tanks (80.1 PL L−1). Lighter coloured tanks and excess luminosity (more than 2 μmol s−1 m2 at tank bottom) appear to be important stress factors for larvae, contributing to reduce survival and productivity. The results indicate that rearing M. amazonicum in black tanks will improve larvae condition, ensure greater productivity of postlarvae and lower Artemia consumption, increasing technological and economic viability.