首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Circadian rhythms of melatonin in haemolymph and optic lobes of Chinese mitten crab (Eriocheir sinensis) and Chinese grass shrimp (Palaemonetes sinensis)
Authors:Zhibin Han  Xiaodong Li  Xin Li  Weibin Xu
Institution:College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
Abstract:This study is the first to examine the circadian rhythms of melatonin in Eriocheir sinensis and Palaemonetes sinensis, two economically important crustaceans. We collected haemolymph and optic lobes from both species every 4 h over a whole day cycle. Melatonin content was measured with high-performance liquid chromatography. E. sinensis haemolymph exhibited significant (p < 0.05) peaks in melatonin at 16:00 (0.180 ± 0.020 μg·mL?1) and 24:00 (0.244 ± 0.055 μg·mL?1), while eyestalks had significant peaks at 16:00 (72.377 ± 18.100 μg·eyestalk?1) and 24:00 (98.756 ± 30.271 μg·eyestalk?1). In P. sinensis, melatonin peaked significantly only at 16:00 in optic lobes (12.493 ± 1.475 μg·eyestalk?1) (p < 0.05); no significant peaks were present in haemolymph. Thus, both E. sinensis and P. sinensis exhibit species-specific melatonin rhythms. Time of day should therefore be considered when examining the physiological status of both crustaceans, given the potential influence of fluctuating daily melatonin concentrations.
Keywords:Melatonin  circadian rhythms  Eriocheir sinensis  Palaemonetes sinensis  haemolymph  optic lobes
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号