|
|||||
|
|
Growth, metabolism and physiological response of the sea cucumber, Apostichopus japonicus Selenka during periods of inactivity |
|
| Authors: | DU Rongbin ZANG Yuanqi TIAN Xiangli DONG Shuanglin |
| Institution: | 1. School of Oceanography, Yantai University, Yantai 264005, P.R. China 2. The Key Laboratory of Mariculture, Ministry of Education of China, Ocean University of China, Qingdao 266003, P.R. China;Provincial Marine Fisheries Research Institute of Shandong, Yantai 264006, P.R. China 3. The Key Laboratory of Mariculture, Ministry of Education of China, Ocean University of China, Qingdao 266003, P.R. China |
| Abstract: | The growth, metabolism and physiological response of the sea cucumber, Apostichopus japonicus, were investigated during periods of inactivity. The body weight, oxygen consumption rate (OCR), activities of acidic phosphatase (ACP), alkaline phosphatase (AKP), catalase (CAT) and superoxide dismutase (SOD), and content of heat shock protein 70 (Hsp70) in the body wall and coelomic fluid of A. japonicus were measured during starvation, experimental aestivation and aestivation. The results showed that the body weight of sea cucumber in the three treatments decreased significantly during the experimental period (P < 0.05). The OCR of sea cucumber reduced in starvation and experimental aestivation treatments, but increased gradually in natural aestivation treatment. The activities of ACP and AKP of sea cucumber decreased gradually in all treatments, whereas those of SOD and CAT as well as Hsp70 content decreased in the starvation and experimental aestivation treatments and increased in natural aestivation treatment. The sea cucumber entered a state of aestivation at 24°C. To some extent, the animals in experimental aestivation were different from those in natural aestivation in metabolism and physiological response. These findings suggested that the aestivation mechanism of A. japonicus is complex and may not be attributed to the elevated temperature only. |
| Keywords: | Apostichopus japonicus Selenka starvation aestivation growth oxygen consumption rate physiological response heat shock protein |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ | |