Abrunhosa Fernando A, Arruda Danielle C B, Simith Darlan J B, Palmeira Carlos A M
Laboratório de Carcinologia, Universidade Federal do Pará, Bragança, PA, Brazil.
An Acad Bras Cienc. 2008 Sep;80(3):445-53. doi: 10.1590/s0001-37652008000300006.
The present study investigated whether the callianassid Callichirus major shows a lecithotrophic behaviour during larval development. Two experiments were carried out. In the first experiment, larvae were subjected to an initial period of feeding, while in the second they were subjected to an initial period of starvation. In Experiment 1, 80% of C. major larvae succeeded moulting to juvenile stage in treatment with larvae fed every day. In the treatments with larvae fed for 1, 2 and 3 days there was total mortality before they reached the megalopal stage. In Experiment 2, zoea larvae showed more resistance when subjected to an initial period of starvation in which larvae starved for 1, 2 and 3 days and had survival rates of 100, 60 and 80%, respectively. But, a delay in the development duration of the zoeal stages was observed. Total mortality was observed for larvae reared in the treatment with entire starvation. The results suggest that zoeal stages of C. major are not lecithotrophic.
本研究调查了大螯蜚Callichirus major在幼体发育过程中是否表现出卵黄营养行为。进行了两个实验。在第一个实验中，幼体经历了一段初始摄食期，而在第二个实验中，它们经历了一段初始饥饿期。在实验1中，每天投喂幼体的处理组中，80%的大螯蜚幼体成功蜕皮至幼体阶段。在投喂1、2和3天的处理组中，幼体在达到大眼幼体阶段之前全部死亡。在实验2中，溞状幼体在经历初始饥饿期时表现出更强的抵抗力，饥饿1、2和3天的幼体存活率分别为100%、60%和80%。但是，观察到溞状幼体阶段的发育时间有所延迟。完全饥饿处理组饲养的幼体全部死亡。结果表明，大螯蜚的溞状幼体阶段并非卵黄营养型。
