Na/K-ATPase activity and osmo-ionic regulation in adult whiteleg shrimp Litopenaeus vannamei exposed to low salinities

Hương, Đỗ Thị Thanh; Jasmani, Safiah; Jayasankar, Vidya; Wilder, Marcy N.

doi:10.1016/j.aquaculture.2010.03.025

Cited by 54 publications

(30 citation statements)

References 31 publications

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“…It was reported that, for Oplegnathus fasciatus, the optimum dietary soybean PL requirement was 74 g/kg at 22 days of age, 50 g/kg at 28 days of age and 30 g/kg at 60 days of age (Kanazawa, 1993). Similar results also found that, compared to PC-deficient group, 40 g/kg soybean lecithin significantly elevated the weight gain of rainbow trout fry with initial weight of 0.18, 1.0 and 1.7 g, respectively, but no promoting growth effect for 7.5 g fry (Hugh, 1990 High unsaturated fatty acid: C20:3n-6, C20:4n-6, C20:5n-3, C22:2n-6, C22:6n-3.…”

Section: Discussionsupporting

confidence: 81%

Effect of the dietary phosphatidylcholine at different growth stages of Pacific white shrimps,Litopenaeus vannamei

et al. 2019

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This study investigated the effects of dietary phosphatidylcholine (PC) at different growth stages of Litopenaeus vannamei (L. vannamei) with an initial weight of 0.70 ± 0.00 g (juvenile) and 4.25 ± 0.00 g (subadult) for 8 weeks. Six isonitrogenous and isoenergetic diets containing PC (0, 1.7, 5.1, 6.8, 10.2 and 13.6 g/kg) were confected using formulated with redfish meal, dehulled soybean meal and peanut meal as protein source, fish oil and corn oil as fat source. The juveniles were reared in 0.3 m3 aquarium at the density of 40 in triplicates, as well as the subadults in 0.5 m3 at the density of 40 in triplicates. Results showed PC level had significant effects on weight gain rate (WGR), specific growth rate, feed conversion ratio in juvenile and subadult shrimps and hepatosomatic index in juvenile shrimps (p < 0.05). No significant differences were found in moisture, whole body protein and crude ash (p > 0.05). Crude fat of juveniles had no significant change (p > 0.05), but subadults increased significantly (p < 0.05). Both juveniles and subadults showed that triglyceride and low‐density lipoprotein presented a downward trend with PC elevating, but high‐density lipoprotein increased gradually. Cholesterol in juveniles presented upward, but downward in subadults (p < 0.05). Dietary PC also significantly reduced the aspartate transaminase in juveniles and alanine transaminase in subadults (p < 0.05). PC supplementation significantly improved the glutathione S‐transferase activity and reduced the content of malondialdehyde in the hepatopancreas (p < 0.05). PC supplementation significantly improved gill filament sodium‐potassium adenosine triphosphatase enzyme of juvenile shrimps (p < 0.05), but subadult shrimps were not influenced (p > 0.05). PC supplementation significantly elevated the content of hepatopancreas eicosapentaenoic acid, highly unsaturated fatty acid (HUFA) and n‐3HUFA (p < 0.05), but the content of linoleic acid significantly reduced (p < 0.05). The broken‐line and quadratic regression model based on WGR showed the optimum dietary PC requirement was 10.3 g/kg and 6.5 g/kg for juveniles and subadults, respectively.

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Section: Discussionsupporting

confidence: 81%

Effect of the dietary phosphatidylcholine at different growth stages of Pacific white shrimps,Litopenaeus vannamei

et al. 2019

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“…; Huong et al . ). The transportation of ions is conducted actively by the use of ion pumps that are present in epithelial cells of gills, midgut and antennal glands.…”

Section: Discussionmentioning

confidence: 97%

“…Under sudden salinity stress, the osmotic concentration of hemolymph changes rapidly to establish a new equilibrium state between the animal and external environment. The animals dramatically extrude ions when exposed to a low salinity (Parado-Estepa et al 1987;Huong et al 2010). The transportation of ions is conducted actively by the use of ion pumps that are present in epithelial cells of gills, midgut and antennal glands.…”

Section: Discussionmentioning

confidence: 99%

Effects of acute change in salinity and moulting on the infection of white leg shrimp (Penaeus vannamei) with white spot syndrome virus upon immersion challenge

Thuong

Tuan

et al. 2016

Journal of Fish Diseases

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In the field, moulting and salinity drop in the water due to excessive rainfall have been mentioned to be risk factors for WSSV outbreaks. Therefore, in this study, the effect of an acute change in environmental salinity and shedding of the old cuticle shell on the susceptibility of Penaeus vannamei to WSSV was evaluated by immersion challenge. For testing the effect of abrupt salinity stress, early premoult shrimp that were acclimated to 35 g L were subjected to salinities of 50 g L , 35 g L , 20 g L , 10 g L and 7 g L or 5 g L and simultaneously exposed to 10 SID mL of WSSV for 5 h, after which the salinity was brought back to 35 g L . Shrimp that were transferred from 35 g L to 50 g L , 35 g L and 20 g L did not become infected with WSSV. Shrimp became infected with WSSV after an acute salinity drop from 35 g L to 10 g L and lower. The mortality in shrimp, subjected to a salinity change to 10 g L , 7 g L and 5 g L , was 6.7%, 46.7% and 53.3%, respectively (P < 0.05) For testing the effect of moulting, shrimp in early premoult, moulting and post-moult were immersed in sea water containing 10 SID mL of WSSV. The resulting mortality due to WSSV infection in shrimp inoculated during early premoult (0%), ecdysis (53.3%) and post-moult (26.72%) demonstrated that a significant difference exists in susceptibility of shrimp during the short moulting process (P < 0.05). The findings of this study indicate that during a drop in environmental salinity lower than 10 g L and ecdysis, shrimp are at risk for a WSSV infection. These findings have important implications for WSSV control measures.

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“…The respiratory tree is responsible for gas exchange and breathing metabolism (Zhao et al 2014). Due to the specific respiratory organ of sea cucumbers, the activity of Na + -K + -ATPase in respiratory trees decreased when under low salinity of 18 psu at 1.5 h and significantly increased at 48 h. Unlike other kinds of marine animals whose respiratory rely on the gills, for instance, the amphibians, the crustacean and teleost (Purcell and Blockmans 2009; Huong et al 2010; Seale et al 2014; Rubino et al 2015), the ability of osmoregulation of respiratory trees is poor than other higher animals.…”

Section: Discussionmentioning

confidence: 99%

Effect of acute salinity stress on ion homeostasis, Na+/K+-ATPase and histological structure in sea cucumber Apostichopus japonicus

et al. 2016

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BackgroundSea cucumbers (Apostichopus japonicus) are an imperiled fauna exposed to a variety of environmental condition such as salinity and studies are urgently needed to assess their effects to guide aquaculture efforts. The effects of acute salinity stress on coelomic fluid osmotic pressure, ion concentrations, the activity of Na+/K+-ATPase in respiratory trees and the histological variations were measured to evaluate the salinity tolerance of sea cucumbers.ResultsSignificant correlations in osmotic pressure were observed between coelomic fluid and ambient environmental salinity. In coelomic fluid, Na+ concentration was observed fluctuated during salinity 18 psu and the inflection point presented at the 6 h. The Na+/K+-ATPase activity in respiratory trees indicated the “U-shaped” fluctuant change and the change trend was opposite with the Na+ concentration. The ions (K+, Cl−) concentration decreased and showed the same tendency at salinity 40 psu with salinity 18 psu. The total coelomocytes counts and phagocytosis of coelomic fluid Na+/K+-ATPase activity indicated fluctuating changes under different salinity stress. Histological variation revealed a negative relation between decreasing salt concentration and tissue integrity. Tissue damages were significantly observed in intestines, muscles and tube feet under low salinity environment (18, 23 and 27 psu). The connective tissue in intestines of A. japonicus exposed to 18 and 23 psu damaged and partly separated from the mucosal epithelium. The significant variations occurred in tube feet, which presented the swelling in connective tissue and a fracture in longitudinal muscles under low salinity (18 psu). The morphological change of tube feet showed the shrinkage of connective tissue under high salinity (40 psu). The amount of infusoria in the respiratory trees decreased or even disappeared in salinity treatment groups (18 and 23 psu).ConclusionThe results inferred that osmoconformity and ionoregulation were seen in sea cucumbers, which contributed to understand the salinity regulatory mechanisms of A. japonicus under acute salinity stress.

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Na/K-ATPase activity and osmo-ionic regulation in adult whiteleg shrimp Litopenaeus vannamei exposed to low salinities

Cited by 54 publications

References 31 publications

Effect of the dietary phosphatidylcholine at different growth stages of Pacific white shrimps,Litopenaeus vannamei

Effect of the dietary phosphatidylcholine at different growth stages of Pacific white shrimps,Litopenaeus vannamei

Effects of acute change in salinity and moulting on the infection of white leg shrimp (Penaeus vannamei) with white spot syndrome virus upon immersion challenge

Effect of acute salinity stress on ion homeostasis, Na+/K+-ATPase and histological structure in sea cucumber Apostichopus japonicus

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