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Chao Song

Bio: Chao Song is an academic researcher from Shanghai Ocean University. The author has contributed to research in topics: Estuary & Juvenile. The author has an hindex of 1, co-authored 3 publications receiving 69 citations.
Topics: Estuary, Juvenile, Otolith, Yangtze river, Biology

Papers
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Journal ArticleDOI
TL;DR: The pomfret, Pampus punctatissimus, is an important fisheries resource in China, but little is known about its amino acid and fatty acid compositions as discussed by the authors.

82 citations

Journal Article
TL;DR: The study demonstrated that biological factors could be characterized by the response of juvenile C. lucidus to the environment, and inferred that the heavy metal pollution was the restrictive factor influencing the fish habitat in Yangtze estuary.
Abstract: To evaluate the choice preference of fish habitat in the Yangtze estuary, juvenile Collichthys lucidus which is the dominant species in spring was selected. The 4 indicator factors, including abundance of Pseudograpsus albus, salinity, substrate type and water depth, were selected from 19 environmental factors. Then, the indices of the habitat suitability curves of the 4 indicator factors were established, and the HSI of juvenile C. lucidus at each site was calculated. The results indicated that HSI was almost more than 0.5 in North Branch, and less than 0.2 in South Branch. It showed that the North Branch of Yangtze estuary was the main nursery area of C. lucidus. The most suitable growth sector was the area with salinity more than 14, mean grain size of substrate less than 29 μm and water depth 2 to 5 m, which was consistent with the distribution of HSI. The study demonstrated that biological factors could be characterized by the response of juvenile C. lucidus to the environment. Chemical oxygen demand, ammonium nitrogen, total phosphorus and volatile phenol did not have significant correlation with the fish abundance, with which nitrite nitrogen, nitrate nitrogen and total nitrogen had significant positive correlation. It suggested that the eutrophication of the survey area had not damaged the habitat of C. lucidus. However, copper ion and cadmium ion had significant negative correlation with the fish abundance, which indicated that the heavy metal pollution had harmed the growth and distribution of juvenile C. lucidus. It was inferred that the heavy metal pollution was the restrictive factor influencing the fish habitat in Yangtze estuary.

2 citations

Journal ArticleDOI
18 Jul 2022-Fishes
TL;DR: In this article , the authors carried out a comprehensive investigation on the distribution of related groups in the Shengsi Sea area and the influence of potential threat factors, such as fishing and harsh habitat, to effectively protect the resources and habitats of C. nasus.
Abstract: At present, the resources of anadromous fish in the world are drastically reduced and one of the solutions to promote its recovery may be to identify and protect its feeding grounds. To determine whether the feeding grounds of anadromous Coilia nasus in the Yangtze River are still in the sea area, the quantitative line analysis of Sr and Ca contents (Sr/Ca ratios) and the area distribution analysis of Sr content in the otoliths of C. nasus in three water areas (Poyang Lake, Yangtze River estuary and Shengsi Sea area) were carried out by electron probe microanalysis (EPMA) to analyze the habitat use and the migratory patterns of different estuarine C. nasus. These results showed that the Sr/Ca ratios of all otoliths fluctuated significantly. By comparison, it was found that C. nasus of Yangtze River might exist in the Shengsi Sea area, and the Shengsi Sea area might be one of the feeding grounds of migratory C. nasus. Therefore, it is urgent to carry out a comprehensive investigation on the distribution of related groups in the Shengsi Sea area and the influence of potential threat factors, such as fishing and harsh habitat, to effectively protect the resources and habitats of C. nasus in the Shengsi Sea area.

2 citations


Cited by
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Journal ArticleDOI
TL;DR: Sea cucumbers are a seafood with high protein and low fat levels and fatty acid profiles were different among species, and the comparison showed that T. argus possessed higher nutritional values than other sea cucumber species.
Abstract: BACKGROUND: The dried form of sea cucumbers has been a seafood and medicinal cure for Asians over many centuries. In this study the chemical composition and nutritional quality of eight common sea cucumbers (Stichopus herrmanni, Thelenota ananas, Thelenota anax, Holothuria fuscogilva, Holothuria fuscopunctata, Actinopyga mauritiana, Actinopyga caerulea and Bohadschia argus) were determined. RESULTS: All species except T. anax and A. caerulea had higher protein and lower fat levels. A. mauritiana and B. argus had less ash content. Glycine was the dominant amino acid found in all species, and content ranged from 126 to 216 mg g(-1) of crude protein. All species exhibited low lysine : arginine ratio and higher essential amino acid scores were obtained by threonine and phenylalanine + tyrosine. A. mauritiana had proportionally less saturated fatty acids (31.23%), and more monounsaturated fatty acids (45.64%) and polyunsaturated fatty acids (PUFA, 23.13%) than other species. Arachidonic acid (C20 : 4n-6) was the major PUFA in all species. T. ananas, A. mauritiana and A. caerulea contained more n-3 PUFA. The n-3/n-6 ratios of eight sea cucumbers species ranged from 0.25 to 0.61. CONCLUSION: Sea cucumbers are a seafood with high protein and low fat levels. The amino acid contents were similar but fatty acid profiles were different among species. The comparison showed that T. ananas, A. mauritiana and B. argus possessed higher nutritional values than other sea cucumber species. (c) 2010 Society of Chemical Industry

178 citations

Journal ArticleDOI
TL;DR: Results demonstrated that optimal Mn increased toughness, collagen content, and pH, and decreased the cooking loss, and cathepsin B and L activities to enhance the flesh quality of fish.

57 citations

Journal ArticleDOI
TL;DR: The nutritional compositions of yellowfin tuna and bigeye tuna (Thunnus albacares) were investigated in this paper, and the results showed that these tuna species have high nutritional qualities, however, no significant differences in the moisture, protein, fat, and ash contents between the two tuna fish species.
Abstract: The nutritional compositions of yellowfin tuna (Thunnus albacares) and bigeye tuna (Thunnus obesus) were investigated. The two species had high protein (23.52 – 23.72%) and low fat content (1.93 – 2.06%). No significant differences were found in the moisture, protein, fat, and ash contents between the two tuna fish species. Eighteen amino acids were identified in both fish species, and glutamic acid was the most predominant (12.45% in yellowfin tuna and 11.28% in bigeye tuna). The total amino acid (TAA) content ranged between 82.66% and 84.49% (dry weight). The ratios of essential amino acids (EAA) to TAA in yellowfin tuna and bigeye tuna were 44.95% and 45.64%, respectively. With the exception of tryptophan, the other EAA scores were >100 %. The major fatty acids were C16:0, C18:1, C22:6 (DHA), and C18:0. Yellowfin tuna had a higher concentration of DHA (20.22%, % of total fatty acids), however, no significant differences in C20:4 (ARA) and C20:5 (EPA) were found between the two tuna fish. The n-3/n-6 ratios of yellowfin tuna and bigeye tuna were 3.29 and 4.56, respectively. This study shows that these tuna species have high nutritional qualities.

54 citations

Journal ArticleDOI
TL;DR: The chemical characterization of freeze-dried edible tissues from P. californicus demonstrated that these products have valuable nutritional properties and could be better utilized for nutraceutical and pharmaceutical applications.
Abstract: Giant red sea cucumbers, Parastichopus californicus, are commercially harvested in the U.S. Pacific Northwest; however, the nutritional and chemical properties of its edible muscle bands and body wall have not been fully elucidated. In particular are the fatty acid profiles of P. californicus tissues, which have not been documented. Sea cucumbers were delivered live and muscle bands and body wall freeze dried, vacuum packed, and stored at -30°C until analyzed. Proximate composition of freeze-dried tissues varied greatly with muscle bands being composed of 68% protein, 12% ash, 9% carbohydrate, and 5% lipids, while the body wall was composed of 47% protein, 26% ash, 15% carbohydrate, and 8% lipids. The hydroxyproline, proline, and glycine contents of the body wall were much higher than those in muscle bands, consistent with the larger amount of connective tissue. Calcium, magnesium, sodium, and iron contents were higher in the body wall than those in muscle bands, whereas the opposite was observed for zinc content. Total long-chain n-3 fatty acid contents were 19% and 32% of total fatty acids in body wall and muscle bands, respectively. Muscle bands had higher content of eicosapentaenoic acid (20:5n-3) than body wall at 22.6% and 12.3%, respectively. High content of arachidonic acid (20:4n-6) was recorded in both body wall (7.1%) and muscle bands (9.9%). Overall, the fatty acid profiles of body wall and muscle bands of P. californicus resemble those described for other species; however, the distribution and occurrence of certain fatty acids is unique to P. californicus, being representative of the fatty acid composition of temperate-polar marine organisms. The chemical characterization of freeze-dried edible tissues from P. californicus demonstrated that these products have valuable nutritional properties. The body wall, a food product of lower market value than muscle bands, could be better utilized for nutraceutical and pharmaceutical applications.

49 citations

Journal ArticleDOI
TL;DR: It could be concluded that the five coldwater fish species from upland Himalayan region contained high quality lipids and proteins constituting a healthy addition to the human diet.
Abstract: Muscle samples of Tor putitora, Neolissochilus hexagonolepis, Oncorhynchus mykiss, Schizothorax richardsonii and Cyprinus carpio were analyzed for fatty acid and amino acid composition with a view to generate nutritional information of the five important coldwater fish species of Indian upland Himalayan region. In the present study, all the fish species recorded good amounts of n-3 fatty acids (8.69–21.48 %) and the n-3/n-6 ratio ranged from 0.7 to 4.98. The amino acid score calculated based on the World Health Organization (WHO) protein standard indicated good quality proteins in the species but with mostly marginally lower values for C. carpio. However, when the amino acid levels of the fish species were compared with the recommended amino acid levels, all the fish species were found to constitute a good source of essential amino acids. Limiting amino acids such as lysine, methionine and cysteine occurred at levels higher than or marginally lower than the recommended amino acid profile. It could be concluded that the five coldwater fish species from upland Himalayan region contained high quality lipids and proteins constituting a healthy addition to the human diet.

47 citations