Silver Pomfret Pampus Argenteus Research Articles

Effects of low salinity on antioxidant enzymes activities in kidney and muscle of juvenile silver pomfret Pampus argenteus

Silver pomfret ( Pampus argenteus) is an important fish species in China, whose fatality is strongly affected by marine salinity. To better understand the tolerance of sliver pomfret to varying environmental salinity at its early developmental stages, the influence of salinity on the activities of five antioxidant enzymes – superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione-S-transferase (GST), and glutathione reductase (GR) – in the kidney and muscle of juvenile silver pomfret was investigated in this study. Divided groups A, B, C, D at random, the juvenile silver pomfrets were then treated with different salinity levels of 25, 20, 15, and 10 with time periods of 24, 48, 96, and 120 h respectively. Generally speaking, the results show that the renal and muscular SOD as well as the renal CAT activities first rise then drop ( P < 0.05), while the muscular CAT activity increases with the elapse of treatment time ( P < 0.05) and peaked at 96 h, then decreased at 120 h, while the muscular CAT activity in group D increased consistently and peaked at 120 h. The renal GPX activity decreases significantly ( P < 0.05) as the salinity drops and treatment time prolongs with its lowest level occurring at 96 h in group D, while the muscular GPX activity increases first then decrease ( P < 0.05); moreover the renal and muscular GPX activities vary reversely in compensation. On a whole, the renal and muscular GST and GR activities first rise then drop ( P < 0.05) with the drop of salinity and elapse of time. To sum up, the results acquired from study indicate that the salinity decrease could effectively stimulate and enhance the antioxidant enzyme activity in the kidney and muscle of the juvenile silver pomfrets, thus effectively eliminating the excessive reactive oxygen species (ROS) and minimizing the body damage. Characterized by certain sequentiality and tissue specificity, the activation of the antioxidant enzymes could also be inhibited when the salinity varies beyond the tolerance range of the body.

Comparative analysis on the genetic diversity of cultured and wild silver pomfret populations based on mtD-loop and &lt;I&gt;CO&lt;/I&gt;I gene

The genetic diversity of cultured and wild silver pomfret (Pampus argenteus) populations was analyzed based on mtD-loop and COI gene. The results showed that the average A,T,C and G contents in D-loop were 40.00%,30.55%,16.75% and 12.70%,respectively,and the contents of A + T were 70.55%,higher than those of G + C. In the COI gene,the average A,T,C and G contents in D-loop gene were 25.85%,33.90%,21.30% and 18.85%,respectively,and the contents of A + T were 59.75%,also higher than those of G + C. The total variable sites,number of haplotypes (h),haplotype diversity (Hd),nucleotide diversity (π) and mean pairwise nucleotide differences (k) of two populations based on D-loop were 19,15,0.895,0.007 and 2.505,respectively. The same parameters based on COI gene were 33,17,0.713,0.004 and 2.239,respectively. Based on mtD-loop and COI gene,the genetic diversity of cultured population was lower than that of wild population. The Hd of cultured population based on mtD-loop and COI gene were 0.562 and 0.571,respectively. And the Hd of wild population were 0.891 and 0.801,respectively. The AMOVA analysis based on D-loop showed that the significant genetic divergence existed in cultured and wild populations,while there was no significant genetic divergence when it was analyzed based on COI gene. In conclusion,both D-loop and COI gene were effective molecular markers for analyzing the genetic diversity of silver pomfret population,while the sensitivity of D-loop in detecting the genetic diversity among populations was higher than that of COI gene.

Deformities in silver pomfret Pampus argenteus caught from Kuwait waters

During sampling for spawning stock of the silver pomfret, Pampus argenteus in Kuwait waters, a few seriously deformed individuals were captured. These individuals had been attacked and wounded, but had healed and survived. The fish body deformities are believed to be caused by predation attempts on silver pomfret by predators such as sharks, groupers, and croakers.

Re-occurrence of silver pomfret Pampus argenteus in the North Sea

Re-occurrence of silver pomfret Pampus argenteus in the North Sea

Effects of different diets on weight gain,hepatic lipase and antioxidant enzyme of juvenile silver pomfret(&lt;I&gt;Pampus argenteus&lt;/I&gt;)

A 9-week feeding experiment was carried out on juvenile silver pomfret Pampus argenteus[initial weight,(4.80±0.11) g]to evaluate the effects of feed composition on weight gain,feed conversion ratio(FCR),hepatic lipase and antioxidant enzyme activities using nutriology and biochemistry.Four diets were formulated and named diet 1(fresh fish meat),diet 2(fresh fish meat mixed with formulated feed),diet 3(fresh fish meat mixed with formulated feed and solen meat) and diet 4(fresh fish meat mixed with formulated feed,solen meat and copepods).Each diet was assigned to triplicate groups.The results showed that the weight gain of silver pomfret could be affected significantly by the feed composition.The weight gain of diet 1 was the lowest among the four diets,and was significantly lower than those of other three diets.The weight gain of diet 4 was the highest,and was significantly higher than those of diet 2 and diet 3(P0.05).The FCR of diet 1 was the highest among the four diets,and was significantly higher than those of other three diets.There was no significant difference in FCR among diet 2,diet 3 and diet 4(P0.05).Hepatic lipase and total lipase activities of diet 1 were significantly lower than those of other diets(P0.05),but no significant difference was found in hepatic lipase,lipoprotein lipase and total lipase activities among diet 2,diet 3 and diet 4(P0.05).There was no significant difference in superoxide dismutase(SOD) and glutathione peroxidase(GSH-PX) activities among all diets(P0.05).However,the lowest SOD and GSH-PX activities were both in diet 1 and highest were in diet 4.The catalase(CAT) activity of diet 4 was significantly higher than those of diet 1,2 and 3(P0.05),but no significant difference was found among diet 1,2 and 3(P0.05).In conclusion,the only use of fish meat as a feed is not beneficial to the growth of silver pomfret.Copepods could be also used in the diet to improve the growth and antioxidant ability of silver pomfret.

Biochemical composition of juvenile cultured vs. wild silver pomfret, Pampus argenteus: determining the diet for cultured fish

We evaluated the biochemical composition of juvenile cultured and wild silver pomfret Pampus argenteus. Cultured silver pomfret (SF) had significantly (P<0.05) lower crude protein content and higher crude lipid content than wild SF. Concentrations of almost all amino acids, except glycine and arginine, were significantly higher (P<0.05) in wild SF compared to cultured SF. Further, wild SF had a significantly (P<0.05) higher concentration of total amino acids (TAA), essential amino acids (EAA), and a higher essential amino acid index (EAAI) than cultured SF. Saturated fatty acids (SFA) in cultured SF were significantly higher than in wild SF. However, the content of poly-unsaturated fatty acids (PUFA) and n-3 fatty acids in wild SF was significantly higher than in cultured SF. Mono-unsaturated fatty acids (MUFA) in cultured and wild SF were not significantly different. Fatty acids C16:0 and C18:1 were the principal fatty acids of the SFAs and MUFAs, respectively, in both cultured and wild SF. The results will be useful for determining the dietary requirements for culture of SF.

Growth kinetics, protease activity and histophagous capability of Uronema sp. infesting cultured silver pomfret Pampus argenteus in Kuwait

Laboratory-produced and -reared sub-adults of silver pomfret (zobaidy) Pampus argenteus affected by severe scuticociliatosis during April and May 2005 were investigated and the causative was a scuticociliate, presumptively identified as Uronema sp. The parasite was capable of producing highly necrotic skin lesions. Mortalities started with a rise in the seawater temperature from 20 to 21.5 degrees C, coinciding with an increase in the total bacterial load of the rearing tank water from 10(3) to 10(5) CFU ml(-1). The parasite was successfully cultured in vitro (85 passages), using 10% brain heart infusion broth inoculated simultaneously with an aquatic Vibrio sp. The parasite reached peak cell density (1.82 x 10(5) cells ml(-1)) on the third day of inoculation. The parasite cell count was found to be inversely related (r = -0.45) to the bacterial count in the incubation medium. The ciliate body dimensions measured, on average, 34.05 +/- 0.99 microm in length and 16.70 +/- 0.74 microm in width (n = 300). Silver staining revealed morphological characteristics of Uronema sp., including a truncated anterior end, a buccal apparatus, caudal cilium and 3 oral polykinetids, with the first one appearing as a single row. Average number of kineties was 12 +/- 3. There was an inverse relationship (R2 = 0.84) between the proteolytic activity and the number of in vitro passages of the scuticociliate. However, the parasite from a freshly infected fish (using inoculum from the tenth passage) showed higher proteolytic activity (31.2%) compared with that produced by the inoculum from in vitro cultures (9.75%). The ciliate also showed a distinct histophagous capability when tested in vitro using host muscle tissue.

The Political Economy of Asian Transition from Communism. Suijian Guo

Previous articleNext article No AccessReviewsThe Political Economy of Asian Transition from Communism. Suijian Guo Le-Yin ZhangLe-Yin Zhang Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The China Journal Volume 57Jan., 2007 Published on behalf of the Australian Centre on China in the World at the Australian National University Article DOIhttps://doi.org/10.1086/tcj.57.20066249 Views: 4Total views on this site Citations: 10Citations are reported from Crossref Copyright The China JournalPDF download Crossref reports the following articles citing this article:Shaofeng Xu, Lingyue Zhang, Kaizong Lin, Miao Bai, Yue Wang, Mengyao Xu, Minglu Zhang, Can Zhang, Yun Shi, He Zhou Effects of light and water disturbance on the growth of Microcystis aeruginosa and the release of algal toxins, Water Environment Research 93, no.1212 (Oct 2021): 2958–2970.https://doi.org/10.1002/wer.1644Gülüzar Atli How metals directly affect the antioxidant status in the liver and kidney of Oreochromis niloticus? An in vitro study, Journal of Trace Elements in Medicine and Biology 62 (Dec 2020): 126567.https://doi.org/10.1016/j.jtemb.2020.126567Min Shen, Yanting Cui, Renjie Wang, Tiantian Dong, Haibin Ye, Shusheng Wang, Ranghui Fu, Yuquan Li Acute response of Pacific white shrimp Litopenaeus vannamei to high-salinity reductions in osmosis-, metabolism-, and immune-related enzyme activities, Aquaculture International 28, no.11 (Aug 2019): 31–39.https://doi.org/10.1007/s10499-019-00441-yZhihua Ren, Yu Fan, Zhuo Zhang, Chaoxi Chen, Changhao Chen, Xuemei Wang, Junliang Deng, Guangneng Peng, Yanchun Hu, Suizhong Cao, Shumin Yu, Xiaoping Ma, Liuhong Shen, Zhijun Zhong, Ziyao Zhou, Zhiwen Xu, Zhicai Zuo Sodium selenite inhibits deoxynivalenol-induced injury in GPX1-knockdown porcine splenic lymphocytes in culture, Scientific Reports 8, no.11 (Dec 2018).https://doi.org/10.1038/s41598-018-36149-xGülüzar Atli, Martin Grosell Characterization and response of antioxidant systems in the tissues of the freshwater pond snail (Lymnaea stagnalis) during acute copper exposure, Aquatic Toxicology 176 (Jul 2016): 38–44.https://doi.org/10.1016/j.aquatox.2016.04.007Sachin O. Khairnar, Xiangli Tian, Shuanglin Dong, Ziheng Fang, Bhavesh V. Solanki, Holeyappa A. Shanthanagouda Effects of the amplitude and frequency of salinity fluctuations on antioxidant responses in juvenile tongue sole, Cynoglossus semilaevis, Spanish Journal of Agricultural Research 14, no.22 (Jun 2016): e0503.https://doi.org/10.5424/sjar/2016142-8691Guo-Di Liu, Zhang Sheng, You-Fa Wang, Ying-Li Han, Yang Zhou, Jun-Quan Zhu Glutathione peroxidase 1 expression, malondialdehyde levels and histological alterations in the liver of Acrossocheilus fasciatus exposed to cadmium chloride, Gene 578, no.22 (Mar 2016): 210–218.https://doi.org/10.1016/j.gene.2015.12.034E. Baysoy, G. Atli, C.Ö. Gürler, Z. Dogan, A. Eroglu, K. Kocalar, M. Canli The effects of increased freshwater salinity in the biodisponibility of metals (Cr, Pb) and effects on antioxidant systems of Oreochromis niloticus, Ecotoxicology and Environmental Safety 84 (Oct 2012): 249–253.https://doi.org/10.1016/j.ecoenv.2012.07.017Fei Yin, Baojun Tang, Dong Zhang, Xiong Zou Lipid Metabolic Response, Peroxidation, and Antioxidant Defence Status of Juvenile Lined Seahorse, Hippocampus erectus , Fed with Highly Unsaturated Fatty Acids Enriched Artemia Nauplii, Journal of the World Aquaculture Society 43, no.55 (Oct 2012): 716–726.https://doi.org/10.1111/j.1749-7345.2012.00598.xFei Yin, Shiming Peng, Peng Sun, Zhaohong Shi Effects of low salinity on antioxidant enzymes activities in kidney and muscle of juvenile silver pomfret Pampus argenteus, Acta Ecologica Sinica 31, no.11 (Feb 2011): 55–60.https://doi.org/10.1016/j.chnaes.2010.11.009

Effect of Pre-chilling on the Shelf-life and Quality of Silver Pomfret (Pampus argenteus) Stored in Dry Ice and Wet Ice

Effect of Pre-chilling on the Shelf-life and Quality of Silver Pomfret (Pampus argenteus) Stored in Dry Ice and Wet Ice

Naricolax insolitus n. sp., a bomolochid copepod (Poecilostomatoida) parasitic in the nasal cavities of silver pomfret Pampus argenteus off Taiwan.

A new species of bomolochid copepod (Poecilostomatoida), Naricolax insolitus n. sp., parasitic in the nasal cavities of the silver pomfret Pampus argenteus (Euphrasen) from the Strait of Taiwan is described. The new species is distinguished from its only known congener, N. atypicus Ho, Do & Kasahara, 1983, by possessing the following four apomorphic features: (1) a complex outgrowth on the egg-sac attachment area; (2) a bent egg-sac; (3) a sharp hook (modified seta V) on the caudal ramus; and (4) an armature of II,I,4 (instead of II,I,5) on the terminal segment of leg 4 exopod. This is the first record of parasitic copepod from the nasal cavities of the silver pomfret.

Development of hatchery technology for the silver pomfret Pampus argenteus (Euphrasen): effect of microalgal species on larval survival

The silver pomfret Pampus argenteus (Euphrasen) is a new candidate for aquaculture and there is not much information available on its larval rearing. Investigations carried out using microalgae alone in the culture system for the initial feeding of the silver pomfret larvae showed that Chlorella, Isochrysis and Nannochloropsis without rotifers are not conducive to the survival of newly hatched larvae. At 6 days after hatching (DAH), a maximum survival of 3% (1.8 ± 1.69%) was observed with Isochrysis followed by Nannochloropsis (0.35 ± 0.21%) and Chlorella (0.25 ± 0.21%). All control larvae died at 6 DAH without microalgae. Further investigations using the above microalgae with rotifers and a mixture of these same microalgae with rotifers showed that significantly higher (P < 0.05) survival could be achieved in the mixture of microalgae with rotifers in the culture system. At 12 DAH, the larval survival was 9.73 ± 1.39% in mixed species of algae compared with that of Isochrysis (6.93 ± 1.86%), Nannochloropsis (6.83 ± 0.61%), Chlorella (5.93 ± 2.76%) and seawater without microalgae or the control (0.73 ± 0.31%). The first incidence of feeding on rotifers at 4 DAH was significantly higher (P < 0.05) in all treatments with microalgae than that of the control. The incidence of feeding in mixed species of algae at 4 DAH (60.0 ± 0.00%) and in Isochrysis (55.0 ± 35.36%) was significantly higher (P < 0.05) than that of Chlorella (40.0 ± 0.00%) and the control (25.0 ± 7.07%). Prey consumption of individual larvae increased significantly (P < 0.01) at 8 DAH compared with that at 4 DAH. During this period, predation on rotifers by larvae was significantly higher (P < 0.05) in mixed species of algae (12.85 ± 5.73 rotifers larva−1) than that of the control (6.75 ± 1.20 rotifers larva−1). The fatty acid composition of rotifers used during this investigation shows that significantly higher (P < 0.05) ω3 HUFA was present in rotifers treated with mixed algae plus commercial enrichment media ‘Super Selco’ and ‘DHA Protein Selco’. Rearing of silver pomfret larvae up to the juvenile stage using mixed species of microalgae in the hatchery has been discussed. During 38 days of the larval rearing period, it was possible to achieve 3.6–4.2% larval survival with a mean of 3.9 ± 0.42%, which was considerably higher than in previous attempts (survival up to 1.5%).