Publications by authors named "Livia Vidal"
Collapse of scallop Nodipecten nodosus production in the tropical Southeast Brazil as a possible consequence of global warming and water pollution.
Sci Total Environ
December 2023
Article Synopsis
- Mollusc rearing in southeast Brazil has significantly declined, with scallop production dropping from 51.2 tons in 2016 to 10.2 tons in 2022 due to unknown reasons.
- The study investigated water quality trends and environmental factors impacting the production of scallops, particularly focusing on Nodipecten nodosus over the last decade.
- Findings indicate that declines in scallop spat production are linked to warmer water temperatures, decreased levels of Chlorophyll a, and increased presence of harmful bacteria, suggesting that global warming and poor seawater quality are key contributors to the industry’s collapse.
Article Synopsis
- Vibrio fluvialis is a salt-loving bacterium found in coastal and estuarine waters, and strain 362.3 was isolated from a specific type of coral.
- Researchers sequenced the 362.3 strain's genome, revealing it consists of 4,607,294 base pairs with a G+C content of 50.2%.
- The analysis indicates that this strain has genes important for breaking down chitin, managing iron, coping with osmotic stress, and transporting materials across membranes.
Article Synopsis
- A novel Gram-negative, motile bacterial strain (designated A511) was discovered from the skin of pufferfish collected in Brazil, specifically at 20-28 °C with 3% NaCl for optimal growth.
- The genome of this strain is 4.36 Mb containing 3,976 coding genes and a G+C content of 42.5%.
- Taxonomic analyses identified A511 as a new species in the Vibrio genus, named Vibrio tetraodonis sp. nov., and revealed gene clusters related to bioactive compounds that may have ecological roles in its pufferfish host.
Article Synopsis
- - MALDI-TOF MS is a quick and cost-effective method originally used for identifying clinical bacteria, but this study explores its application to marine bacteria from various sources like corals and fish.
- - The researchers analyzed 255 marine bacterial isolates, revealing 18 distinct groups that include well-known genera such as Vibrio and Bacillus.
- - Results showed that higher MALDI-TOF similarity scores correlate with high genetic similarity, indicating that this technique is effective in identifying Vibrio species.
Prochlorococcus is the most abundant photosynthetic prokaryote on our planet. The extensive ecological literature on the Prochlorococcus collective (PC) is based on the assumption that it comprises one single genus comprising the species Prochlorococcus marinus, containing itself a collective of ecotypes. Ecologists adopt the distributed genome hypothesis of an open pan-genome to explain the observed genomic diversity and evolution patterns of the ecotypes within PC.
View Article and Find Full Text PDFEnterovibrio baiacu sp. nov.
Curr Microbiol
January 2020
Article Synopsis
- A649 is a novel bacterial species isolated from the healthy pufferfish Sphoeroides spengleri, classified as Enterovibrio baiacu sp nov.
- Genomic analysis shows A649 has significantly low amino acid/nucleotide identity (less than 95%) and genome similarity (less than 70%) compared to its closest relatives.
- The complete genome of strain A649 is approximately 5.4 million base pairs long and contains 4,826 coding genes, with unique features for distinguishing it from other Enterovibrio species.
Article Synopsis
- - The genome sequence of Shewanella corallii strain A687 was obtained from a pufferfish species called Sphoeroides spengleri.
- - This genetic assembly is made up of 5,215,037 base pairs and includes 284 separate fragments known as contigs.
- - The G+C content of the genome is 50.3%, which indicates the percentage of guanine and cytosine nucleotides in the DNA.
We report here the novel species Halomonas coralii. The nearly complete genome of strain 362.1 consisted of 4.
View Article and Find Full Text PDFHarmful cyanobacterial blooms have become increasingly common in freshwater ecosystems in recent decades, mainly due to eutrophication and climate change. Water becomes unreliable for human consumption. Here, we report a comprehensive study carried out to investigate the water quality of several Campina Grande reservoirs.
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