Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum
Abstract Antimicrobial nanoparticle therapy was proposed as an alternative strategy to reduce the use of antibiotics in larval-rearing systems. Antibacterial potential of the prepared squilla chitosan–silver nanoparticles and its protective effect on Dicentrarchus labrax (sea bass) larvae in the ear...
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Islamic Azad University
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doaj-f78ba5a0d3a040799ac5104793293a222020-11-25T02:22:59ZengIslamic Azad UniversityInternational Aquatic Research2008-49352008-69702016-05-018217918910.1007/s40071-016-0133-2Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarumKhouloud M. Barakat0Heba S. El-Sayed1Yousry M. Gohar2Microbiology Lab., Marine Environment Division, National Institute of Oceanography and FisheriesFish Reproduction and Larval Rearing (Marine Hatchery), Aquaculture Division, National Institute of Oceanography and FisheriesBotany and Microbiology Department, Faculty of Science, Alexandria UniversityAbstract Antimicrobial nanoparticle therapy was proposed as an alternative strategy to reduce the use of antibiotics in larval-rearing systems. Antibacterial potential of the prepared squilla chitosan–silver nanoparticles and its protective effect on Dicentrarchus labrax (sea bass) larvae in the early stages were studied against Vibrio angularium. Different concentrations of squilla chitosan (Csq) and squilla chitosan–silver nanoparticles (Csq–AgNps) (1, 2, 5, 10, and 20 %) were, in vitro, tested against V.anguillarum and expressed as a role of Log10 mean. Sea bass larvae were treated using: 10 % Csq and 5 % Csq–AgNps as effective inhibitory concentrations against the pathogen either encapsulated during the feeding regime or added directly to the model system via the water from the onset of 4 weeks. The long-term administration of Csq–AgNps through enriched food for both non-infected and infected systems had survival % of 74.5 ± 1.5 and 72.5 ± 2.5, respectively. Larval clinical observations using Csq–AgNps were studied compared with the two controls. The current study found that 5 % encapsulated Csq–AgNps was enough to suppress infection and considered as an alternative to antibiotics in controlling virulent fish pathogens.http://link.springer.com/article/10.1007/s40071-016-0133-2Sea bass larvaeVibrio angulariumSquilla chitosanSilver nanoparticlesEncapsulation |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Khouloud M. Barakat Heba S. El-Sayed Yousry M. Gohar |
spellingShingle |
Khouloud M. Barakat Heba S. El-Sayed Yousry M. Gohar Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum International Aquatic Research Sea bass larvae Vibrio angularium Squilla chitosan Silver nanoparticles Encapsulation |
author_facet |
Khouloud M. Barakat Heba S. El-Sayed Yousry M. Gohar |
author_sort |
Khouloud M. Barakat |
title |
Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum |
title_short |
Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum |
title_full |
Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum |
title_fullStr |
Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum |
title_full_unstemmed |
Protective effect of squilla chitosan–silver nanoparticles for Dicentrarchus labrax larvae infected with Vibrio anguillarum |
title_sort |
protective effect of squilla chitosan–silver nanoparticles for dicentrarchus labrax larvae infected with vibrio anguillarum |
publisher |
Islamic Azad University |
series |
International Aquatic Research |
issn |
2008-4935 2008-6970 |
publishDate |
2016-05-01 |
description |
Abstract Antimicrobial nanoparticle therapy was proposed as an alternative strategy to reduce the use of antibiotics in larval-rearing systems. Antibacterial potential of the prepared squilla chitosan–silver nanoparticles and its protective effect on Dicentrarchus labrax (sea bass) larvae in the early stages were studied against Vibrio angularium. Different concentrations of squilla chitosan (Csq) and squilla chitosan–silver nanoparticles (Csq–AgNps) (1, 2, 5, 10, and 20 %) were, in vitro, tested against V.anguillarum and expressed as a role of Log10 mean. Sea bass larvae were treated using: 10 % Csq and 5 % Csq–AgNps as effective inhibitory concentrations against the pathogen either encapsulated during the feeding regime or added directly to the model system via the water from the onset of 4 weeks. The long-term administration of Csq–AgNps through enriched food for both non-infected and infected systems had survival % of 74.5 ± 1.5 and 72.5 ± 2.5, respectively. Larval clinical observations using Csq–AgNps were studied compared with the two controls. The current study found that 5 % encapsulated Csq–AgNps was enough to suppress infection and considered as an alternative to antibiotics in controlling virulent fish pathogens. |
topic |
Sea bass larvae Vibrio angularium Squilla chitosan Silver nanoparticles Encapsulation |
url |
http://link.springer.com/article/10.1007/s40071-016-0133-2 |
work_keys_str_mv |
AT khouloudmbarakat protectiveeffectofsquillachitosansilvernanoparticlesfordicentrarchuslabraxlarvaeinfectedwithvibrioanguillarum AT hebaselsayed protectiveeffectofsquillachitosansilvernanoparticlesfordicentrarchuslabraxlarvaeinfectedwithvibrioanguillarum AT yousrymgohar protectiveeffectofsquillachitosansilvernanoparticlesfordicentrarchuslabraxlarvaeinfectedwithvibrioanguillarum |
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