Effect of Different Salinity Level on Breeding, Fertilization, Hatching and Survival of Nile Tilapia, Oreochromis niloticus (Linnaeus, 1758) in Captivity

Malik, Abdul; Abbas, Ghulam; Ghaffar, Abdul; Ferrando, Sara; Gallus, Lorenzo; Shah, S. S. A.

doi:10.17582/journal.pjz/2018.50.2.539.547

Cited by 11 publications

(14 citation statements)

References 12 publications

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“…China is the world’s largest producer of aquacultured tilapia ( Malik et al, 2018 ). However, tilapia is susceptible to hepatic steatosis as a result of dietary imbalances in modern culture systems ( Ng and Romano, 2013 ; Huang et al, 2016 , 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…With the rapid development of intensive fish farming ( Malik et al, 2018 ), tilapia has become susceptible to hepatic steatosis when fed a HFD with an aim to use less protein ( Ng and Romano, 2013 ; Huang et al, 2016 , 2018 ). Several reports have shown that HFD-induced fatty liver is often accompanied by low growth and low immune function in farmed fish ( Lu et al, 2013a ; Ma et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Changes in Physiological Parameters, Lipid Metabolism, and Expression of MicroRNAs in Genetically Improved Farmed Tilapia (Oreochromis niloticus) With Fatty Liver Induced by a High-Fat Diet

et al. 2018

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Tilapia is susceptible to hepatic steatosis when grown in intensive farming systems. The aim of this study was to explore the mechanism of fatty liver induced by a high-fat diet (HFD) in genetically improved farmed tilapia (GIFT, Oreochromis niloticus). Juvenile GIFT were fed with HFD or a normal-fat diet (NFD) for 60 days. Substantial fat deposition in the liver of HFD-fed GIFT on days 20, 40, and 60 was observed using hematoxylin – eosin staining and oil red O staining. The increased fat deposition was consistent with increased triglyceride (TG) and total cholesterol (TC) levels in the liver of HFD-fed GIFT. There were significant differences (P < 0.05) in serum biochemical indexes (TG, TC, low density lipoprotein-cholesterol, and insulin contents, and alanine aminotransferase activity) between GIFT fed a HFD and GIFT fed a NFD on days 20, 40, and 60. Furthermore, 60 days of a HFD significantly changed (P < 0.05) the hepatic fatty acid composition, and led to increased polyunsaturated fatty acid levels and decreased saturated fatty acid and monounsaturated fatty acid levels. Hepatic antioxidant enzyme activities increased by day 20 and then declined, which led to an increase in malondialdehyde contents in the liver of HFD-fed GIFT. Molecular analyses revealed that the microRNAs miR-122, miR-29a, and miR-145-5p were upregulated, whereas miR-34a was downregulated in HFD-fed GIFT. SCD, ELOVL6, and SRD5A2 encode three important enzymes in lipid metabolism, and were identified as potential targets of miRNAs. The transcript levels of hepatic SCD and ELOVL6 were decreased and that of hepatic SRD5A2 was increased in GIFT fed a HFD. Overall, the results of this study revealed a potential link between miRNAs and fatty liver induced by HFD, and suggest that a HFD could lead to excess fat deposition in the GIFT liver, which may disrupt hepatic lipid metabolism and reduce the antioxidant defense capacity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in Physiological Parameters, Lipid Metabolism, and Expression of MicroRNAs in Genetically Improved Farmed Tilapia (Oreochromis niloticus) With Fatty Liver Induced by a High-Fat Diet

et al. 2018

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“…There are many external factors affecting growth, such as stocking density, food nutrition, temperature, and water quality ( Siikavuopio and Sæther, 2006 ; Fraser and Rogers, 2007 ; Valenzuela et al, 2017 ). For example, previous study suggested that Nile tilapia ( Oreochromis niloticus ) obtained successful growth, maximum fertilization, and survival rate of fry up to 15% salinity ( Malik et al, 2018 ). Also, Rahim et al (2017) reported that good performances of black fin sea bream ( Acanthopagrus berda ) were closely associated with factors including food nutrition, temperature, and salinity.…”

Section: Introductionmentioning

confidence: 99%

Change in Ubiquitin Proteasome System of Grass Carp Ctenopharyngodon idellus Reared in the Different Stocking Densities

et al. 2018

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The ubiquitin proteasome system (UPS) is a highly regulated mechanism of intracellular protein degradation and turnover. To evaluate the effect of crowding stress on the UPS in fish, grass carp (Ctenopharyngodon idellus) were randomly reared at low stocking density (LSD, 0.9 kg m−2) or high stocking density (HSD, 5.9 kg m−2) for 70 days. The expression of the genes regulating UPS, stress-related parameters, and profiles of amino acid in white muscle as well as growth rate of fish reared at two stocking densities were investigated. Fish exhibited significantly higher growth rate in the LSD group compared to the HSD group. Serum concentrations of cortisol, total protein, and glucose did not vary significantly in fish between two groups. There was no significant difference in the mRNA levels of nrf2, keap1, and hsp90 in white muscle of fish stocked at two densities at the endpoint of the experiment. In the UPS pathway, the expressions of ub, chip, psmc1 in the LSD group were significantly higher than those in the HSD group (P < 0.05). Ubiquitinated protein level and the content of 3-Methylhistidine elevated significantly in the LSD group (P < 0.05). The mRNA levels of mafbx, murf1, and s6k1 in the LSD group were significantly higher than those in HSD group (P < 0.05). These results illustrate that the fish cultured in lower stocking density would exhibit a greater growth rate and a fast protein turnover in muscle.

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“…Numerous previous studies have reported an adverse effect of salinity on the maturation of Mrigal Carp Cirrhinus mrigala and Striped Mullet Mugil cephalus (Rajender 2000; Baxevanis et al 2004; Barman et al 2005). Inland saline water has also been used for breeding a few stenohaline species such as Common Carp and Mrigal Carp (Rajender 2000; Malik et al 2018).…”

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confidence: 99%

The Effect of Inland Saline Groundwater on Growth, Maturation, and Osmoregulation of Common Carp

et al. 2020

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A 90‐day experiment was conducted on Common Carp Cyprinus carpio in eight rectangular earthen ponds (21 × 10 × 1.50 m) for testing the effect of four groundwater salinities (0, 5, 10, and 15‰). At the end of the experiment, 100% survival was observed in all of the treatment groups. Somatic growth and reproductive performance were significantly (P < 0.05) influenced by salinity. Both males and females showed a significantly higher gonadosomatic index (24.46 ± 4.11% [mean ± SE]) at 5‰ (P < 0.05) compared with the fish that were kept in freshwater (15.92 ± 2.43%). The gonadal osmolality and osmolytes of the seminal and ovarian fluids increased in proportion to salinity. Ova diameter was inversely related to salinity. The incidence of spawning at 5‰ was significantly higher than at 0, 10, and 15‰. The gonadosomatic index was also significantly higher (30.15 ± 3.44%) at 5‰ followed by 0, 10, and 15‰, respectively. We concluded that the optimum salinity for the maturation of Common Carp is 5‰.

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Effect of Different Salinity Level on Breeding, Fertilization, Hatching and Survival of Nile Tilapia, Oreochromis niloticus (Linnaeus, 1758) in Captivity

Abstract: Authors' Contribution GA conceived and designed the study and wrote the manuscript. AM did experimental work. AG analysed the data. SF and LD edited the manuscript. SSAA assisted in brooder collection.

Cited by 11 publications

References 12 publications

Changes in Physiological Parameters, Lipid Metabolism, and Expression of MicroRNAs in Genetically Improved Farmed Tilapia (Oreochromis niloticus) With Fatty Liver Induced by a High-Fat Diet

Changes in Physiological Parameters, Lipid Metabolism, and Expression of MicroRNAs in Genetically Improved Farmed Tilapia (Oreochromis niloticus) With Fatty Liver Induced by a High-Fat Diet

Change in Ubiquitin Proteasome System of Grass Carp Ctenopharyngodon idellus Reared in the Different Stocking Densities

The Effect of Inland Saline Groundwater on Growth, Maturation, and Osmoregulation of Common Carp

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