Absorption of different macroalgae by sea cucumber Apostichopus japonicus (Selenka): Evidence from analyses of fatty acid profiles
14
Citation
42
Reference
10
Related Paper
Citation Trend
Keywords:
Apostichopus japonicus
Apostichopus japonicus
Cite
Citations (18)
Apostichopus japonicus
Cite
Citations (0)
The present study is to investigate the feasibility of multi-elements analysis in determination of the geographical origin of sea cucumber Apostichopus japonicus, and to make choice of the effective tracers in sea cucumber Apostichopus japonicus geographical origin assessment. The content of the elements such as Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Mo, Cd, Hg and Pb in sea cucumber Apostichopus japonicus samples from seven places of geographical origin were determined by means of ICP-MS. The results were used for the development of elements database. Cluster analysis(CA) and principal component analysis (PCA) were applied to differentiate the sea cucumber Apostichopus japonicus geographical origin. Three principal components which accounted for over 89% of the total variance were extracted from the standardized data. The results of Q-type cluster analysis showed that the 26 samples could be clustered reasonably into five groups, the classification results were significantly associated with the marine distribution of the sea cucumber Apostichopus japonicus samples. The CA and PCA were the effective methods for elements analysis of sea cucumber Apostichopus japonicus samples. The content of the mineral elements in sea cucumber Apostichopus japonicus samples was good chemical descriptors for differentiating their geographical origins.
Apostichopus japonicus
Cite
Citations (4)
Apostichopus japonicus
Cite
Citations (0)
The approximate( protein,ash,fat,carbohydrate,amino acids and fatty acids),and functional compositions( polysaccharides,and collagen) were determined in sea cucumber Apostichopus japonicus with body weight of 67. 11 g,96. 15 g and 258. 40 g farmed in ponds,shallow coasts and deep coasts in Dalian,respectively. It was found that there were the maximal levels of protein,lipid,and carbohydrate and the minimal level of ash in the sea cucumber farmed in ponds. The maximal polysaccharide content,and higher amino saccharide and alduronic acid were observed in the sea cucumber farmed in ponds,with the maximal collagen content in the sea cucumber farmed in deep coast. Polyunsaturated fatty acids were found to be the predominant fatty acids in sea cucumber farmed in the three patterns,the maximal level of polyunsaturated fatty acids,especially EPA,in the sea cucumber farmed in deep coast. There was the maximal glutamic acid content in the sea cucumber farmed in the three patterns,with the maximal level of essential amino acids in the sea cucumber farmed in ponds. The findings show that there are different approximate and functional compositions in the sea cucumber farmed in different patterns,which provides reference to rational consumption and to reasonable price for producers and consumers.
Apostichopus japonicus
Cite
Citations (1)
The sea cucumber Apostichopus japonicus is a commercially valuable aquaculture species in Korea. Aquaculture species require specific nursery culture conditions to increase survival and growth rates. Sea cucumbers hibernate during the high temperatures of summer and during the low temperatures of winter, and suboptimal temperature conditions decrease sea cucumber growth and survival rates. The natural South Korean environment is very unfavorable for culturing sea cucumber; therefore, developing a recirculating aquaculture system (RAS) capable of breeding and growing sea cucumber year-round is necessary. The aim of this study was to investigate growth performance of juvenile sea cucumber in a RAS. Growth and survival rates of juvenile sea cucumber were high during our 24-week experiment. Sea cucumber survival rates were 87.8-93.3%, and specific growth rates were 0.4689-0.7846.
Apostichopus japonicus
Cite
Citations (1)
Apostichopus japonicus
Echinoderm
Cite
Citations (2)
A comparison was made of the innate immune activities of individuals of various sizes from a culture pond of the sea cucumber Apostichopus japonicas.The number of coelomocytes possessed by smaller sea cucumbers is significantly greater than that possessed by larger sizes(P0.05).The cytolytic activity of small sizes of sea cucumber is also significantly greater than that of larger sizes(P0.05).However,there is no significant difference in the activity levels of lysozyme,COP,ACP or NOS between smaller-sized and larger-size Apostichopus japonicas.Thus,the differences in innate immune activity between different sizes of sea cucumber do not affect their growth patterns.
Apostichopus japonicus
Cite
Citations (0)
In order to provide basis knowledge on immune system of sea cucumber(Apostichopus japonicus), the immune activity in sea cucumber with different body weight were studied. Three groups of sea cucumbers(50 g, 100 g, and 150 g) were selected in the experiment(10 individuals each). The total coelomocytes numbers, the ratio of various types of coelomocytes and some immune enzyme activities were determined. The results showed that the body weight had a significant effect on total coelomocytes amount, the ratio of various types of coelomocytes, POD and SOD activity, while the PO activity in coelomic fluid of sea cucumber was extremely low. The total coelomocytes amount and SOD activity in 150 g group of sea cucumber were significantly higher than the other two groups, but the POD activity was significantly lower than the other two groups(P0.05). The ratio of various types of coelomocytes in 150 g group had significant difference compared to other groups(P0.017). In a word, the body weight had significant impacts on immune activity of sea cucumber. The immune components of sea cucumber changed in the process of development and the immune defense ability might vary in different stages.
Apostichopus japonicus
Dry weight
Cite
Citations (2)
The selectivity of wild and farmed sea cucumber Apostichopus japonicus with different sizes for dietary sand particle sizes was studied by examination of the items in the digestive tracts.The sea cucumber was found to show selectivity for the sand particle size.Approximately 60% of the intestinal contents in the wild sea cucumber was comprised of the sand particles with size from 0.0625 mm to 0.5 mm,depending on the environment.In the sea cucumber cultured in a pond,however,the less than 0.25 mm particles were observed in 60% of the intestinal contents.The indoor experiment with the same ratio of different sizes revealed that the sea cucumber showed the same size selectivity,feeding 60% of the particle size varying from 0.125 mm to 0.5 mm.
Apostichopus japonicus
Particle (ecology)
Cite
Citations (2)