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University of Algarve (UAlg)[Affiliation] Publications | LitMetric

23 results match your criteria: "University of Algarve (UAlg)[Affiliation]"

Dietary supplementation with Omega-3 fatty acids seems to promote skeletal health. Therefore, their consumption at imbalanced or excessive levels has offered less beneficial or even prejudicial effects. Fish produced in aquaculture regimes are prone to develop abnormal skeletons.

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The molecular structure and photochemistry of dispiro[cyclohexane-1,3'-[1,2,4,5]tetraoxane-6',2''-tricyclo[3.3.1.

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Rates of mental health issues have been increasing among university students. This study investigates the effects of the Interculturality and Mindfulness Program (PIM) on academic students on mindfulness, emotional regulation, depression, anxiety, stress, life satisfaction, optimism, positive solitude, and loneliness. A quasi-experimental research was conducted, with pre- and post-test comparative measurements in three groups: in-person (IG), synchronous online (OG), and passive control (CG).

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Plasmodium falciparum artemisinin-resistance boosted the quest for novel plasmodial "fast killers," uncovering antimalarial candidates OZ439 and E209, whose peroxide precursors are 1,2,4-trioxolane (1) and 1,2,4,5-tetraoxane (2), differing solely in the pharmacophore (trioxolane or tetraoxane). Combining X-ray crystallography and vibrational spectroscopy, along with Hirshfeld surface analysis and calculations (CE-B3LYP/6-31G(d,p)) of pairwise interaction energies of intermolecular contacts existing in the crystal structure, may deepen the understanding of relative reactivity and properties of these endoperoxides classes. In the crystal, the tetraoxane ring in 2 and the trioxolane-adamantyl fragment in 1 are disordered, with molecules 1 and 2 existing as two distinct, stable conformations.

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Paralytic shellfish toxins (PSTs) are a large group of biotoxins that cause paralytic shellfish poisoning. Their appearance in natural waters and their ingestion by aquatic species have a huge socio-economic impact, whereby their monitoring is of the upmost relevance to minimize the consequences. For earlier detection and faster response/action by stakeholders, validation of adjusted analytical methods, particularly for lower concentration levels, is important.

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Are non-indigenous species hitchhiking offshore farmed mussels? A biogeographic and functional approach.

Mar Pollut Bull

October 2021

Portuguese Institute for the Sea and Atmosphere (IPMA), Avenida 5 de Outubro, 8700-305 Olhão, Portugal; Center of Marine Sciences (CCMAR), University of Algarve (UAlg), Campus de Gambelas, 8005-139 Faro, Portugal.

The epifauna associated to farmed mussels in southern Portugal coast was analysed, aiming at identifying the species with spreading potential through commercial transport. The presence of a relevant number of the species here found is not reported to at least one of the common mussel export/transposition countries. Indeed, important species biogeographic dissimilarities between the mussel farm area and the Greater North Sea and Western Mediterranean Sea sub-regions were detected, suggesting the potential transport of non-indigenous species (NIS) into other countries.

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Driving factors of biogeographical variation in seagrass herbivory.

Sci Total Environ

March 2021

Grupo en Biodiversidad y Conservación, IU-Ecoaqua, Universidad de Las Palmas de Gran Canaria, Canary Islands, Spain.

Article Synopsis
  • Herbivory plays a significant role in shaping seagrass communities, but knowledge on its biogeographical patterns and drivers is limited compared to those in terrestrial ecosystems.
  • A study was conducted in Cymodocea nodosa meadows, spanning 2000 km and 13° latitude across two ocean basins, to explore factors affecting herbivory, including herbivore density, seagrass characteristics, and environmental conditions.
  • Findings revealed that herbivory intensity is primarily influenced by fish density and seagrass size, with seasonal temperature variations being a key driver in temperate regions, while specific conditions in subtropical areas resulted in minimal herbivory.
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Despite the wide knowledge about prevalent effects of ocean acidification on single species, the consequences on species interactions that may promote or prevent habitat shifts are still poorly understood. Using natural CO vents, we investigated changes in a key tri-trophic chain embedded within all its natural complexity in seagrass systems. We found that seagrass habitats remain stable at vents despite the changes in their tri-trophic components.

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A multimetric approach to evaluate offshore mussel aquaculture effects on the taxonomical and functional diversity of macrobenthic communities.

Mar Environ Res

October 2019

Portuguese Institute for the Sea and Atmosphere (IPMA), Avenida 5 de Outubro, 8700-305, Olhão, Portugal; Center of Marine Sciences (CCMAR), University of Algarve (UAlg), Campus de Gambelas, 8005-139, Faro, Portugal.

A multimetric approach was used to detect structural, compositional, and functional shifts in the underlying macrobenthic communities of an offshore mussel (Mytilus galloprovincialis) farm in a Portuguese Aquaculture Production Area. Sampling stations distributed inside and outside this area were used to evaluate sediment descriptors and macrobenthic samples collected before (April and September 2010) and after (June and September 2014) the initiation of mussel farming. Sediment fine fraction, organic matter content, and trace element concentrations were found to increase with depth, independently from the mussel farm.

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Using a mesocosm approach to evaluate marine benthic assemblage alteration associated with CO enrichment in coastal environments.

Ecotoxicol Environ Saf

August 2018

Department of Physico-Chemistry, Aquatic Systems Research Group, UNESCO/UNITWIN WiCop, Faculty of Marine and Environmental Sciences, Cádiz, Spain; Department of Ecotoxicology, Santa Cecília University (UNISANTA), Santos, São Paulo, Brazil.

The effects of acidification related to the CO enrichment in the coastal environments on marine macrobenthic abundance, diversity and richness were analyzed in a medium- term (21 days) using mesocosm experiments. Two sampling sites located in the Bay of Cadiz - SW, Spain were selected and tested at pH values ranged from 7.9 to 6.

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Profiling of antioxidant potential and phytoconstituents of Plantago coronopus.

Braz J Biol

February 2018

Centre of Marine Sciences - CCMAR, Faculty of Sciences and Technology, University of Algarve - UAlg, Ed. 7, Campus of Gambelas, 8005-139, Faro, Portugal.

The halophyte species Plantago coronopus has several described ethnomedicinal uses, but few reported biological activities. This work carried out for the first time a comparative analysis of P. coronopus organs in terms of phenolic composition and antioxidant activity of organic and water extracts from roots, leaves and flowers.

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The present study assessed the metal genotoxicity potential at chromosome-level in the bivalve Ruditapes philippinarum collected along different areas of the Tagus estuary. Higher levels of aneuploidy on gill cells were detected at the most sediment contaminated area both in May (31.7%) and October (36.

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Genomic Insights into Aquimarina sp. Strain EL33, a Bacterial Symbiont of the Gorgonian Coral Eunicella labiata.

Genome Announc

August 2016

Microbial Ecology and Evolution Research Group, Centre of Marine Sciences (CCMar), University of Algarve (UAlg), Gambelas, Faro, Portugal Department of Bioengineering, Institute for Bioengineering and Biosciences (IBB), Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal

To address the metabolic potential of symbiotic Aquimarina spp., we report here the genome sequence of Aquimarina sp. strain EL33, a bacterium isolated from the gorgonian coral Eunicella labiata This first-described (to our knowledge) animal-associated Aquimarina genome possesses a sophisticated repertoire of genes involved in drug/antibiotic resistance and biosynthesis.

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To shed light on the associations established between Vibrio species and soft corals in coastal ecosystems, we report here the draft genome sequence of Vibrio sp. strain Evh12, a bacterium that has been isolated from the gorgonian coral Eunicella verrucosa and that shows antagonistic activity against Escherichia coli.

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Endothelial microvilli that protrude into the capillary lumen, although invisible in the optical microscopy, may play an important role in the blood flow control in the capillaries. Because of the plug effects, the width of the gap between the capillary wall and the blood cell is especially critical for the blood flow dynamics in capillaries, while microvilli located on the capillary wall can easily control the velocity of the blood flow. We report that microvilli in the capillaries of different vertebrate species have similar characteristics and density, suggesting similarities between the respective regulation mechanisms.

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To shed light on the putative host-mediated lifestyle of the quintessential marine symbiont Aliivibrio fischeri, and on the symbiosis versus potentially pathogenic features of bacteria associated with farmed fish, we report the draft genome sequence of A. fischeri strain 5LC, a bacterium retrieved from gilthead sea bream (Sparus aurata) larvae.

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We report here the draft genome sequence of Vibrio sp. Vb278, a biofilm-producing strain isolated from the marine sponge Sarcotragus spinosulus, showing in vitro antibacterial activity. The annotated genome displays a range of symbiotic factors and the potential for the biosynthesis of several biologically active natural products.

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Microbial communities and bioactive compounds in marine sponges of the family irciniidae-a review.

Mar Drugs

September 2014

Microbial Ecology and Evolution Research Group, Centre of Marine Sciences (CCMar), University of Algarve (UAlg), Gambelas, 8005-139 Faro, Portugal.

Marine sponges harbour complex microbial communities of ecological and biotechnological importance. Here, we propose the application of the widespread sponge family Irciniidae as an appropriate model in microbiology and biochemistry research. Half a gram of one Irciniidae specimen hosts hundreds of bacterial species-the vast majority of which are difficult to cultivate-and dozens of fungal and archaeal species.

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Temporal dynamics of prokaryotic communities in the marine sponge Sarcotragus spinosulus.

Mol Ecol

June 2014

Microbial Ecology and Evolution Research Group, Centre of Marine Sciences (CCMar), University of Algarve (UAlg), Gambelas, 8005-139, Faro, Portugal.

In spite of their putative relevance to host functioning, in-depth knowledge of sponge microbiome stability over time is scarce. This study tackles the temporal maintenance of bacterial and archaeal assemblages in the model host Sarcotragus spinosulus along three successive years. Prokaryotic communities were profiled by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and 454-pyrosequencing of S.

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The aim of the present study was to analyze the role of psychopathic traits in female juvenile delinquency. Using a sample of 236 young females from the Juvenile Detention Centers of the Portuguese Ministry of Justice and schools in the Lisbon area, a group of female youths with high psychopathic traits (n=118; M=15.84 years of age; range=14-18 years of age) and a group of female youths with low psychopathic traits (n=118; M=15.

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Transthoracic echocardiography reference values in juvenile and adult 129/Sv mice.

Cardiovasc Ultrasound

May 2013

Regenerative Medicine Program, Department of Biomedical Sciences and Medicine (DCBM), University of Algarve (UALG), Campus of Gambelas, Edf.8, 8005-139, Faro, Portugal.

Background: In the recent years, the use of Doppler-echocardiography has become a standard non-invasive technique in the analysis of cardiac malformations in genetically modified mice. Therefore, normal values have to be established for the most commonly used inbred strains in whose genetic background those mutations are generated. Here we provide reference values for transthoracic echocardiography measurements in juvenile (3 weeks) and adult (8 weeks) 129/Sv mice.

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The objective of the present study was to compare incarcerated male and female juvenile offenders regarding psychopathic traits, behavior problems, psychopathy taxon, conduct disorder, self-reported delinquent behavior, and crime seriousness. Within a total forensic sample of 261 detainee participants, subdivided in a male group (n=217) and a female group (n=44), statistically significant differences were found. Female juvenile offenders show less callous-unemotional traits, more emotional symptoms, more prosocial behaviors, less self-reported delinquent behavior, and lower crime seriousness.

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