Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy)
1 - The bacterial flora of the digestive tract of aquatic organisms reflects various factors, such as the aqueous environment (temperature, salinity, etc.), seasonal variation, diet, fish species and anatomy of gastrointestinal section. 2 - In the present work, culturable bacteria isolated from inte...
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ftunivsalentoojs:oai:siba-ese.unisalento.it:article/13419 2023-05-15T15:16:39+02:00 Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) Floris, R. Manca, S. Fois, N. Università del Salento - Coordinamento SIBA Lecce, Italy 2013-06-01 application/pdf http://siba-ese.unile.it/index.php/twb/article/view/13419 https://doi.org/10.1285/i1825229Xv7n2p4 unknown Coordinamento SIBA - Università del Salento http://siba-ese.unile.it/index.php/twb/article/view/13419 Transitional Waters Bulletin; Volume 7, Issue 2 (2013); 4-12 gut microflora Sparus aurata 16S rRNA gene Sardinian lagoons Article Journal 2013 ftunivsalentoojs https://doi.org/10.1285/i1825229Xv7n2p4 2022-09-22T16:05:15Z 1 - The bacterial flora of the digestive tract of aquatic organisms reflects various factors, such as the aqueous environment (temperature, salinity, etc.), seasonal variation, diet, fish species and anatomy of gastrointestinal section. 2 - In the present work, culturable bacteria isolated from intestinal samples of gilthead sea bream caught in two coastal lagoons of Sardinia, were quantified and identified in order to detect the effect of different habitats on the microbial ecology of fish gut. 3 - A total of 120 bacterial colonies coming from intestinal tracts of Sparus aurata specimens captured in the Tortoli (Eastern Sardinia: Lat 39°56’ 854’’N, Long 9°41’160’’E) and Porto Pino (Southern Sardinia: Lat 39°02’ 54’’N, Long 08°32’54’’E) lagoons during the winter season, were identified by means of amplified ribosomal DNA restriction analysis and 16S rRNA gene sequencing. 4 - The results showed no significant differences in the bacterial loads, while a diverse composition of microbial gut flora was detected between the two groups of gilthead sea bream. Indeed, intestinal microbiota from the Tortoli lagoon showed high genetic variation with a total of 13 different taxonomic bacterial groups identified as Pseudomonas spp. (33.3%), Sphingomonas paucimobilis (10.5%), Proteus spp. (8.8%), Chryseobacterium sp. B-G-R2A3 (5.3%), Arctic soil bacterium A1T3 (5.3%), Sphingobacterium spp. (5.3%), Psychrobacter spp. (3.5%), Psychrobacter maritimus (3.5%), Leucobacter spp. (3.5%), Yersinia bercovieri (3.5%), Aeromonas spp. (3.5%), Aeromonas molluscorum (1.7%), and Erwinia persicina (1.7%). On the other hand, 16S rRNA gene analyses of bacterial flora performed on the Porto Pino gut samples, revealed a lower variability when compared with those from Tortoli, since only 3 different taxonomic groups were distinguished and ascribed to Pseudomonas spp. (90%), Janthinobacterium spp. (8%) and Psychrobacter maritimus (2%). 5 - Our findings indicate that the aqueous habitat highly selects fish microbial gut flora which represents a ... Article in Journal/Newspaper Arctic Università del Salento: ESE - Salento University Publishing Arctic |
institution |
Open Polar |
collection |
Università del Salento: ESE - Salento University Publishing |
op_collection_id |
ftunivsalentoojs |
language |
unknown |
topic |
gut microflora Sparus aurata 16S rRNA gene Sardinian lagoons |
spellingShingle |
gut microflora Sparus aurata 16S rRNA gene Sardinian lagoons Floris, R. Manca, S. Fois, N. Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
topic_facet |
gut microflora Sparus aurata 16S rRNA gene Sardinian lagoons |
description |
1 - The bacterial flora of the digestive tract of aquatic organisms reflects various factors, such as the aqueous environment (temperature, salinity, etc.), seasonal variation, diet, fish species and anatomy of gastrointestinal section. 2 - In the present work, culturable bacteria isolated from intestinal samples of gilthead sea bream caught in two coastal lagoons of Sardinia, were quantified and identified in order to detect the effect of different habitats on the microbial ecology of fish gut. 3 - A total of 120 bacterial colonies coming from intestinal tracts of Sparus aurata specimens captured in the Tortoli (Eastern Sardinia: Lat 39°56’ 854’’N, Long 9°41’160’’E) and Porto Pino (Southern Sardinia: Lat 39°02’ 54’’N, Long 08°32’54’’E) lagoons during the winter season, were identified by means of amplified ribosomal DNA restriction analysis and 16S rRNA gene sequencing. 4 - The results showed no significant differences in the bacterial loads, while a diverse composition of microbial gut flora was detected between the two groups of gilthead sea bream. Indeed, intestinal microbiota from the Tortoli lagoon showed high genetic variation with a total of 13 different taxonomic bacterial groups identified as Pseudomonas spp. (33.3%), Sphingomonas paucimobilis (10.5%), Proteus spp. (8.8%), Chryseobacterium sp. B-G-R2A3 (5.3%), Arctic soil bacterium A1T3 (5.3%), Sphingobacterium spp. (5.3%), Psychrobacter spp. (3.5%), Psychrobacter maritimus (3.5%), Leucobacter spp. (3.5%), Yersinia bercovieri (3.5%), Aeromonas spp. (3.5%), Aeromonas molluscorum (1.7%), and Erwinia persicina (1.7%). On the other hand, 16S rRNA gene analyses of bacterial flora performed on the Porto Pino gut samples, revealed a lower variability when compared with those from Tortoli, since only 3 different taxonomic groups were distinguished and ascribed to Pseudomonas spp. (90%), Janthinobacterium spp. (8%) and Psychrobacter maritimus (2%). 5 - Our findings indicate that the aqueous habitat highly selects fish microbial gut flora which represents a ... |
author2 |
Università del Salento - Coordinamento SIBA |
format |
Article in Journal/Newspaper |
author |
Floris, R. Manca, S. Fois, N. |
author_facet |
Floris, R. Manca, S. Fois, N. |
author_sort |
Floris, R. |
title |
Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
title_short |
Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
title_full |
Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
title_fullStr |
Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
title_full_unstemmed |
Microbial ecology of intestinal tract of gilthead sea bream (Sparus aurata Linnaeus, 1758) from two coastal lagoons of Sardinia (Italy) |
title_sort |
microbial ecology of intestinal tract of gilthead sea bream (sparus aurata linnaeus, 1758) from two coastal lagoons of sardinia (italy) |
publisher |
Coordinamento SIBA - Università del Salento |
publishDate |
2013 |
url |
http://siba-ese.unile.it/index.php/twb/article/view/13419 https://doi.org/10.1285/i1825229Xv7n2p4 |
op_coverage |
Lecce, Italy |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Transitional Waters Bulletin; Volume 7, Issue 2 (2013); 4-12 |
op_relation |
http://siba-ese.unile.it/index.php/twb/article/view/13419 |
op_doi |
https://doi.org/10.1285/i1825229Xv7n2p4 |
_version_ |
1766346954636263424 |