88 results match your criteria Aquatic Biology[Journal]


Meta-transcriptomics reveals a diverse antibiotic resistance gene pool in avian microbiomes.

BMC Biol 2019 Apr 8;17(1):31. Epub 2019 Apr 8.

Marie Bashir Institute for Infectious Diseases and Biosecurity and Sydney Medical School, The University of Sydney, Sydney, NSW, 2006, Australia.

Background: Antibiotic resistance is rendering common bacterial infections untreatable. Wildlife can incorporate and disperse antibiotic-resistant bacteria in the environment, such as water systems, which in turn serve as reservoirs of resistance genes for human pathogens. Anthropogenic activity may contribute to the spread of bacterial resistance cycling through natural environments, including through the release of human waste, as sewage treatment only partially removes antibiotic-resistant bacteria. Read More

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https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-01
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http://dx.doi.org/10.1186/s12915-019-0649-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6454771PMC
April 2019
4 Reads

High copper and UVR synergistically reduce the photochemical activity in the marine diatom Skeletonema costatum.

J Photochem Photobiol B 2019 Mar 30;192:97-102. Epub 2019 Jan 30.

School of Biological Sciences, Monash University, Clayton, Victoria 3800, Australia.

Many coastal waters are threatened by heavy metal pollution, of which copper (Cu) is one of the most common contaminants. Since surface waters in marine environments and ecosystems contaminated with heavy metals are concurrently exposed to solar ultraviolet radiation (UVR), marine phytoplankton may be stressed by the combination of heavy metals and UVR. In this study, three Cu concentrations (0, 0. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2019.01.016DOI Listing
March 2019
1 Read

The Y chromosome sequence of the channel catfish suggests novel sex determination mechanisms in teleost fish.

BMC Biol 2019 01 25;17(1). Epub 2019 Jan 25.

Department of Biology, College of Art and Sciences, Syracuse University, Syracuse, NY, 13244, USA.

Background: Sex determination mechanisms in teleost fish broadly differ from mammals and birds, with sex chromosomes that are far less differentiated and recombination often occurring along the length of the X and Y chromosomes, posing major challenges for the identification of specific sex determination genes. Here, we take an innovative approach of comparative genome analysis of the genomic sequences of the X chromosome and newly sequenced Y chromosome in the channel catfish.

Results: Using a YY channel catfish as the sequencing template, we generated, assembled, and annotated the Y genome sequence of channel catfish. Read More

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https://bmcbiol.biomedcentral.com/articles/10.1186/s12915-01
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http://dx.doi.org/10.1186/s12915-019-0627-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346536PMC
January 2019
28 Reads

Protective role of Spirulina platensis against UVA-induced haemato-biochemical and cellular alterations in Clarias gariepinus.

J Photochem Photobiol B 2019 Feb 18;191:59-64. Epub 2018 Dec 18.

Zoology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt.

Recently, it has become widely recognized that ultraviolet A (UVA) exposure is harmful for both aquatic and terrestrial organisms. Many studies have reported the effects of UVA on aquatic animals, especially fish, but little is known about the antioxidant role of microalgae in ameliorating the negative effects of UVA exposure. Recently, there has been great interest in using Spirulina platensis (SP) as a dietary antioxidant agent. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10111344183124
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http://dx.doi.org/10.1016/j.jphotobiol.2018.12.013DOI Listing
February 2019
1 Read

A high-throughput and open-source platform for embryo phenomics.

PLoS Biol 2018 Dec 13;16(12):e3000074. Epub 2018 Dec 13.

Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Plymouth, Devon, United Kingdom.

Phenomics has the potential to facilitate significant advances in biology but requires the development of high-throughput technologies capable of generating and analysing high-dimensional data. There are significant challenges associated with building such technologies, not least those required for investigating dynamic processes such as embryonic development, during which high rates of temporal, spatial, and functional change are inherently difficult to capture. Here, we present EmbryoPhenomics, an accessible high-throughput platform for phenomics in aquatic embryos comprising an Open-source Video Microscope (OpenVIM) that produces high-resolution videos of multiple embryos under tightly controlled environmental conditions. Read More

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http://dx.doi.org/10.1371/journal.pbio.3000074DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6292576PMC
December 2018
1 Read

Experimental bacterial adaptation to the zebrafish gut reveals a primary role for immigration.

PLoS Biol 2018 Dec 10;16(12):e2006893. Epub 2018 Dec 10.

Institute of Ecology and Evolution, University of Oregon, Eugene, Oregon, United States of America.

All animals live in intimate association with microorganisms that profoundly influence their health and development, yet the traits that allow microorganisms to establish and maintain host associations are not well understood. To date, most investigations aimed at identifying traits required for host association have focused on intrahost niches. Consequently, little is known about the relative contribution of extrahost factors such as environmental growth and survival and immigration into hosts from the external environment, as promoters of host association. Read More

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http://dx.doi.org/10.1371/journal.pbio.2006893DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6301714PMC
December 2018
1 Read

Sargassum wightii-synthesized ZnO nanoparticles - from antibacterial and insecticidal activity to immunostimulatory effects on the green tiger shrimp Penaeus semisulcatus.

J Photochem Photobiol B 2018 Jun 3;183:318-330. Epub 2018 May 3.

Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

The green synthesis of metal nanoparticles using phytochemical from marine seaweeds is a fast-growing research field in nanotechnology. Here, the biosynthesis of zinc oxide nanoparticles was achieved using the hot water extract of Sargassum wightii. The hot water extract prepared from S. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2018.04.049DOI Listing
June 2018
3 Reads
1 Citation
2.960 Impact Factor

Comparative genomics of bdelloid rotifers: Insights from desiccating and nondesiccating species.

PLoS Biol 2018 04 24;16(4):e2004830. Epub 2018 Apr 24.

Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, Berkshire, United Kingdom.

Bdelloid rotifers are a class of microscopic invertebrates that have existed for millions of years apparently without sex or meiosis. They inhabit a variety of temporary and permanent freshwater habitats globally, and many species are remarkably tolerant of desiccation. Bdelloids offer an opportunity to better understand the evolution of sex and recombination, but previous work has emphasised desiccation as the cause of several unusual genomic features in this group. Read More

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http://dx.doi.org/10.1371/journal.pbio.2004830DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5916493PMC
April 2018
3 Reads

Dissecting the null model for biological invasions: A meta-analysis of the propagule pressure effect.

PLoS Biol 2018 04 23;16(4):e2005987. Epub 2018 Apr 23.

School of Biological Sciences and the Environment Institute, The University of Adelaide, Adelaide, Australia.

A consistent determinant of the establishment success of alien species appears to be the number of individuals that are introduced to found a population (propagule pressure), yet variation in the form of this relationship has been largely unexplored. Here, we present the first quantitative systematic review of this form, using Bayesian meta-analytical methods. The relationship between propagule pressure and establishment success has been evaluated for a broad range of taxa and life histories, including invertebrates, herbaceous plants and long-lived trees, and terrestrial and aquatic vertebrates. Read More

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http://dx.doi.org/10.1371/journal.pbio.2005987DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5933808PMC
April 2018
5 Reads

Applications of Microalgal Biotechnology for Disease Control in Aquaculture.

Biology (Basel) 2018 Apr 12;7(2). Epub 2018 Apr 12.

Center of Excellence for Shrimp Molecular Biology and Biotechnology, Mahidol University, Bangkok 10400, Thailand.

Aquaculture industries, and in particular the farming of fish and crustaceans, are major contributors to the economy of many countries and an increasingly important component in global food supply. However, the severe impact of aquatic microbial diseases on production performance remains a challenge to these industries. This article considers the potential applications of microalgal technology in the control of such diseases. Read More

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http://dx.doi.org/10.3390/biology7020024DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022871PMC
April 2018
1 Read

Effective polyploidy causes phenotypic delay and influences bacterial evolvability.

PLoS Biol 2018 02 22;16(2):e2004644. Epub 2018 Feb 22.

Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland.

Whether mutations in bacteria exhibit a noticeable delay before expressing their corresponding mutant phenotype was discussed intensively in the 1940s to 1950s, but the discussion eventually waned for lack of supportive evidence and perceived incompatibility with observed mutant distributions in fluctuation tests. Phenotypic delay in bacteria is widely assumed to be negligible, despite the lack of direct evidence. Here, we revisited the question using recombineering to introduce antibiotic resistance mutations into E. Read More

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https://dx.plos.org/10.1371/journal.pbio.2004644
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http://dx.doi.org/10.1371/journal.pbio.2004644DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5839593PMC
February 2018
15 Reads

Enhanced antimicrobial, anti-oxidant applications of green synthesized AgNPs- an acute chronic toxicity study of phenolic azo dyes & study of materials surface using X-ray photoelectron spectroscopy.

J Photochem Photobiol B 2018 Mar 13;180:208-217. Epub 2018 Feb 13.

National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:

The drug resistant bacteria and textile contaminations of water cause different sever health problem throughout the world. To overcome this issue, new environmental benign materials and methods are needed. Plant metabolites directed synthesis of nanoparticles is considered eco-friendly and easy in synthesis. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2018.02.015DOI Listing
March 2018
9 Reads
2.960 Impact Factor

Climate change could drive marine food web collapse through altered trophic flows and cyanobacterial proliferation.

PLoS Biol 2018 01 9;16(1):e2003446. Epub 2018 Jan 9.

The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, Australia.

Global warming and ocean acidification are forecast to exert significant impacts on marine ecosystems worldwide. However, most of these projections are based on ecological proxies or experiments on single species or simplified food webs. How energy fluxes are likely to change in marine food webs in response to future climates remains unclear, hampering forecasts of ecosystem functioning. Read More

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http://dx.doi.org/10.1371/journal.pbio.2003446DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5760012PMC
January 2018
1 Read

Effects of Sex Steroids on Fish Leukocytes.

Biology (Basel) 2018 Jan 9;7(1). Epub 2018 Jan 9.

Department of Cell Biology and Histology, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, 30100 Murcia, Spain.

In vertebrates, in addition to their classically reproductive functions, steroids regulate the immune system. This action is possible mainly due to the presence of steroid receptors in the different immune cell types. Much evidence suggests that the immune system of fish is vulnerable to xenosteroids, which are ubiquitous in the aquatic environment. Read More

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http://dx.doi.org/10.3390/biology7010009DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5872035PMC
January 2018
1 Read

"Pomacytosis"-Semi-extracellular phagocytosis of cyanobacteria by the smallest marine algae.

PLoS Biol 2018 01 5;16(1):e2003502. Epub 2018 Jan 5.

Ocean Biogeochemistry & Ecosystems Research Group, National Oceanography Centre, Southampton, United Kingdom.

The smallest algae, less than 3 μm in diameter, are the most abundant eukaryotes of the World Ocean. Their feeding on planktonic bacteria of similar size is globally important but physically enigmatic. Tiny algal cells tightly packed with the voluminous chloroplasts, nucleus, and mitochondria appear to have insufficient organelle-free space for prey internalization. Read More

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http://dx.doi.org/10.1371/journal.pbio.2003502DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5773223PMC
January 2018
4 Reads

In Vivo Effects of Lipopolysaccharide on Peroxisome Proliferator-Activated Receptor Expression in Juvenile Gilthead Seabream (Sparus Aurata).

Biology (Basel) 2017 Sep 25;6(4). Epub 2017 Sep 25.

Department of Cell Biology, Physiology and Immunology, School of Biology, University of Barcelona, 08028 Barcelona, Spain.

Fish are constantly exposed to microorganisms in the aquatic environment, many of which are bacterial pathogens. Bacterial pathogens activate the innate immune response in fish involving the production of pro-inflammatory molecules that, in addition to their immune-related role, can affect non-immune tissues. In the present study, we aimed at investigating how inflammatory responses can affect metabolic homeostasis in the gilthead seabream (), a teleost of considerable economic importance in Southern European countries. Read More

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http://dx.doi.org/10.3390/biology6040036DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5745441PMC
September 2017
2 Reads

Simple rules can guide whether land- or ocean-based conservation will best benefit marine ecosystems.

PLoS Biol 2017 Sep 6;15(9):e2001886. Epub 2017 Sep 6.

Centre for Biodiversity and Conservation Science, The University of Queensland, St. Lucia, Australia.

Coastal marine ecosystems can be managed by actions undertaken both on the land and in the ocean. Quantifying and comparing the costs and benefits of actions in both realms is therefore necessary for efficient management. Here, we quantify the link between terrestrial sediment runoff and a downstream coastal marine ecosystem and contrast the cost-effectiveness of marine- and land-based conservation actions. Read More

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http://dx.doi.org/10.1371/journal.pbio.2001886DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5587113PMC
September 2017
13 Reads

Blue light induced free radicals from riboflavin in degradation of crystal violet by microbial viability evaluation.

J Photochem Photobiol B 2017 Sep 12;174:355-363. Epub 2017 Aug 12.

Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan. Electronic address:

Crystal violet (CV) is applied in daily use mainly as a commercial dye and antimicrobial agent. Waste water containing CV may affect aquatic ecosystems. Riboflavin, also known as vitamin B, is non-toxic and an essential vitamin required for the functions of the human body. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2017.08.018DOI Listing
September 2017
4 Reads
3 Citations
2.960 Impact Factor

Green synthesis of gold nanoparticles using a cheap Sphaeranthus indicus extract: Impact on plant cells and the aquatic crustacean Artemia nauplii.

J Photochem Photobiol B 2017 Aug 29;173:598-605. Epub 2017 Jun 29.

Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy; The BioRobotics Institute, Scuola Superiore Sant'Anna, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy.

The impact of green-fabricated gold nanoparticles on plant cells and non-target aquatic species is scarcely studied. In this research, we reported an environment friendly technique for the synthesis of gold nanoparticles (Au NPs) using the Sphaeranthus indicus leaf extract. The formation of the metal NPs was characterized by UV-Visible and FT-IR spectroscopy, XRD, SEM and TEM analyses. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10111344173073
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http://dx.doi.org/10.1016/j.jphotobiol.2017.06.040DOI Listing
August 2017
24 Reads

Microalgae screening under CO stress: Growth and micro-nutrients removal efficiency.

J Photochem Photobiol B 2017 May 30;170:91-98. Epub 2017 Mar 30.

Department of Chemistry, The University of Lahore, Lahore 54000, Pakistan. Electronic address:

Algae are one of the promising agents for greenhouse gas reduction and biofuel production. Different technologies have been developed and introduced in last decades for algae growth. Algae plays a very imperative role in the aquatic ecosystem regarding CO reduction and micro-nutrient removal. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2017.03.021DOI Listing
May 2017
5 Reads

Intraguild Predation Dynamics in a Lake Ecosystem Based on a Coupled Hydrodynamic-Ecological Model: The Example of Lake Kinneret (Israel).

Biology (Basel) 2017 Mar 29;6(2). Epub 2017 Mar 29.

Yigal Allon Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal 1495001, Israel.

The food web of Lake Kinneret contains intraguild predation (IGP). Predatory invertebrates and planktivorous fish both feed on herbivorous zooplankton, while the planktivorous fish also feed on the predatory invertebrates. In this study, a complex mechanistic hydrodynamic-ecological model, coupled to a bioenergetics-based fish population model (DYCD-FISH), was employed with the aim of revealing IGP dynamics. Read More

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http://dx.doi.org/10.3390/biology6020022DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5485469PMC
March 2017
3 Reads

Degradation of organic pollutants by bio-inspired rectangular and hexagonal titanium dioxide nanostructures.

J Photochem Photobiol B 2017 Apr 9;169:90-95. Epub 2017 Mar 9.

Department of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea. Electronic address:

Dyes are used in textile, printing, leather, pharmaceutical, food and cosmetic industries. Dyes add color and pattern to materials. The presence of even very low concentration of dyes/dyes degradation products in effluent is highly toxic to humans and aquatic organisms. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2017.03.006DOI Listing
April 2017
2 Reads

Fish Immunoglobulins.

Biology (Basel) 2016 Nov 21;5(4). Epub 2016 Nov 21.

Comparative Immunogenetics Laboratory, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.

The B cell receptor and secreted antibody are at the nexus of humoral adaptive immunity. In this review, we summarize what is known of the immunoglobulin genes of jawed cartilaginous and bony fishes. We focus on what has been learned from genomic or cDNA sequence data, but where appropriate draw upon protein, immunization, affinity and structural studies. Read More

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http://dx.doi.org/10.3390/biology5040045DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5192425PMC
November 2016

Laser-induced fluorescence in fish scales to evaluate the environmental integrity of ecosystems.

J Photochem Photobiol B 2016 Dec 8;165:80-86. Epub 2016 Oct 8.

Programa de Pós-Graduação em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul, C.P. 351, Dourados, MS, Brazil. Electronic address:

The aim of this study was to evaluate the fluorescence of Astyanax lacustris fish scales when excited in the UV-A and blue regions for use as a bioindicator of aquatic ecosystems. This species was firstly defined as Astyanax altiparanae, popularly known as "lambari-do-rabo-amarelo". Currently, abiotic/biotic environmental integrity is generally assessed using limnological and physicochemical parameters related to biological indicators in streams or rivers, which are not sufficient to evaluate the real environmental conditions: in some cases, these parameters can be strongly dependent on local weather conditions. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2016.10.005DOI Listing
December 2016
1 Read

How Doth the Little Crocodilian: Analyzing the Influence of Environmental Viscosity on Feeding Performance of Juvenile Alligator mississippiensis.

Biology (Basel) 2016 Sep 30;5(4). Epub 2016 Sep 30.

Louisiana Department of Wildlife and Fisheries, Rockefeller Wildlife Refuge, 5476 Grand Chenier Hwy, Grand Chenier, LA 76043, USA.

Wetland habitats are used as nursery sites for hatchling and juvenile alligators (), where they utilize prey from aquatic and terrestrial settings. However, little is known about how viscosity of the medium influences feeding performance. We hypothesized that timing and linear excursion feeding kinematic variables would be different for individuals feeding on prey above the water compared with the same individuals feeding underwater. Read More

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http://dx.doi.org/10.3390/biology5040036DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5192416PMC
September 2016
1 Read

Parallel evolution of highly conserved plastid genome architecture in red seaweeds and seed plants.

BMC Biol 2016 09 2;14:75. Epub 2016 Sep 2.

Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea.

Background: The red algae (Rhodophyta) diverged from the green algae and plants (Viridiplantae) over one billion years ago within the kingdom Archaeplastida. These photosynthetic lineages provide an ideal model to study plastid genome reduction in deep time. To this end, we assembled a large dataset of the plastid genomes that were available, including 48 from the red algae (17 complete and three partial genomes produced for this analysis) to elucidate the evolutionary history of these organelles. Read More

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http://dx.doi.org/10.1186/s12915-016-0299-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5010701PMC
September 2016
46 Reads

One-pot biogenic fabrication of silver nanocrystals using Quisqualis indica: Effectiveness on malaria and Zika virus mosquito vectors, and impact on non-target aquatic organisms.

J Photochem Photobiol B 2016 Sep 27;162:646-655. Epub 2016 Jul 27.

Insect Behavior Group, Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy; The BioRobotics Institute, Sant'Anna School of Advanced Studies, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy. Electronic address:

Currently, mosquito vector control is facing a number of key challenges, including the rapid development of resistance to synthetic pesticides and the recent spread of aggressive arbovirus outbreaks. The biosynthesis of silver nanoparticles (AgNPs) is currently considered an environmental friendly alternative to the employ of pyrethroids, carbamates and microbial agents (e.g. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2016.07.036DOI Listing
September 2016
15 Reads

Photo-catalyzed and phyto-mediated rapid green synthesis of silver nanoparticles using herbal extract of Salvinia molesta and its antimicrobial efficacy.

J Photochem Photobiol B 2016 Feb 17;155:51-9. Epub 2015 Dec 17.

School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi -221005, Uttar Pradesh, India. Electronic address:

Current study presents an economic, ecofriendly and simple photo-catalytic green route for the swift biosynthesis of silver nanoparticles (AgNPs) within 20s, devoid of any instrumental support or chemical reductant. Aqueous leaf-extract of an aquatic fern, Salvinia molesta (AES), was used as a bioreductant as well as a stabilizing agent. Rapid change in color of reaction mixture from yellowish green to reddish brown within 20s in direct sun light exposure was considered as the primary visual indication of AgNPs biosynthesis. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2015.12.008DOI Listing
February 2016
20 Reads

Efficacy of SnO2 nanoparticles toward photocatalytic degradation of methylene blue dye.

J Photochem Photobiol B 2016 Feb 17;155:34-8. Epub 2015 Dec 17.

Chemistry of Heterocycles & Natural Product Research Laboratory, Organic Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632 014, Tamilnadu, India. Electronic address:

Maximum pollutants in the industrial and domestic waste water effluents from any sources include pathogens and organic chemicals, which can be removed before discharging into the water bodies. Methylene blue has been considered as one of the major water contaminated pollutants. Such pollutant is dominant in surface water and groundwater. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S10111344153004
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http://dx.doi.org/10.1016/j.jphotobiol.2015.12.010DOI Listing
February 2016
8 Reads

Five Years of Experimental Warming Increases the Biodiversity and Productivity of Phytoplankton.

PLoS Biol 2015 Dec 17;13(12):e1002324. Epub 2015 Dec 17.

School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom.

Phytoplankton are key components of aquatic ecosystems, fixing CO2 from the atmosphere through photosynthesis and supporting secondary production, yet relatively little is known about how future global warming might alter their biodiversity and associated ecosystem functioning. Here, we explore how the structure, function, and biodiversity of a planktonic metacommunity was altered after five years of experimental warming. Our outdoor mesocosm experiment was open to natural dispersal from the regional species pool, allowing us to explore the effects of experimental warming in the context of metacommunity dynamics. Read More

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http://dx.doi.org/10.1371/journal.pbio.1002324DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4682994PMC
December 2015
7 Reads

Mesocosms Reveal Ecological Surprises from Climate Change.

Authors:
Damien A Fordham

PLoS Biol 2015 Dec 17;13(12):e1002323. Epub 2015 Dec 17.

The Environment Institute and School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia.

Understanding, predicting, and mitigating the impacts of climate change on biodiversity poses one of the most crucial challenges this century. Currently, we know more about how future climates are likely to shift across the globe than about how species will respond to these changes. Two recent studies show how mesocosm experiments can hasten understanding of the ecological consequences of climate change on species' extinction risk, community structure, and ecosystem functions. Read More

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http://dx.doi.org/10.1371/journal.pbio.1002323DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4682990PMC
December 2015

Metazoans of redoxcline sediments in Mediterranean deep-sea hypersaline anoxic basins.

BMC Biol 2015 Dec 10;13:105. Epub 2015 Dec 10.

Geology & Geophysics Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.

Background: The deep-sea hypersaline anoxic basins (DHABs) of the Mediterranean (water depth ~3500 m) are some of the most extreme oceanic habitats known. Brines of DHABs are nearly saturated with salt, leading many to suspect they are uninhabitable for eukaryotes. While diverse bacterial and protistan communities are reported from some DHAB haloclines and brines, loriciferans are the only metazoan reported to inhabit the anoxic DHAB brines. Read More

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http://dx.doi.org/10.1186/s12915-015-0213-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4676161PMC
December 2015
3 Reads

Application of ceramic membranes for microalgal biomass accumulation and recovery of the permeate to be reused in algae cultivation.

J Photochem Photobiol B 2015 Dec 11;153:367-72. Epub 2015 Sep 11.

Department of Aquatic Sozology, West Pomeranian University of Technology in Szczecin, ul. Kazimierza Królewicza 4, 71-550 Szczecin, Poland.

The present study was carried out to investigate the possibility of using ceramic membranes for microalgal biomass densification and to evaluate the qualitative composition of the permeate as a source of nitrogen and phosphorus for microalgae cultivated in a closed system. The studies were conducted on the microalga Monoraphidium contortum. The microfiltration process was carried out on a quarter-technical scale using ceramic membranes with 1. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2015.09.009DOI Listing
December 2015
6 Reads

MetAnnotate: function-specific taxonomic profiling and comparison of metagenomes.

BMC Biol 2015 Nov 5;13:92. Epub 2015 Nov 5.

Department of Biology, University of Waterloo, 200 University Ave. West, Waterloo, ON, N2L 3G1, Canada.

Background: Metagenomes provide access to the taxonomic composition and functional capabilities of microbial communities. Although metagenomic analysis methods exist for estimating overall community composition or metabolic potential, identifying specific taxa that encode specific functions or pathways of interest can be more challenging. Here we present MetAnnotate, which addresses the common question: "which organisms perform my function of interest within my metagenome(s) of interest?" MetAnnotate uses profile hidden Markov models to analyze shotgun metagenomes for genes and pathways of interest, classifies retrieved sequences either through a phylogenetic placement or best hit approach, and enables comparison of these profiles between metagenomes. Read More

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http://dx.doi.org/10.1186/s12915-015-0195-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4636000PMC
November 2015
8 Reads

Horizontal gene transfer in bdelloid rotifers is ancient, ongoing and more frequent in species from desiccating habitats.

BMC Biol 2015 Nov 4;13:90. Epub 2015 Nov 4.

Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, SL5 7PY, UK.

Background: Although prevalent in prokaryotes, horizontal gene transfer (HGT) is rarer in multicellular eukaryotes. Bdelloid rotifers are microscopic animals that contain a higher proportion of horizontally transferred, non-metazoan genes in their genomes than typical of animals. It has been hypothesized that bdelloids incorporate foreign DNA when they repair their chromosomes following double-strand breaks caused by desiccation. Read More

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http://bmcbiol.biomedcentral.com/articles/10.1186/s12915-015
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http://dx.doi.org/10.1186/s12915-015-0202-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632278PMC
November 2015
18 Reads

Simulation study of natural UV-B radiation on Catla catla and its impact on physiology, oxidative stress, Hsp 70 and DNA fragmentation.

J Photochem Photobiol B 2015 Aug 27;149:156-63. Epub 2015 May 27.

Aqua Research Lab, Department of Zoology, University of Delhi, Delhi 110 007, India. Electronic address:

UV-B radiation is a potential stressor to the aquacultural species. Catla catla, catla larvae (1.08±0. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2015.05.019DOI Listing

Convergent evolution of mechanically optimal locomotion in aquatic invertebrates and vertebrates.

PLoS Biol 2015 Apr 28;13(4):e1002123. Epub 2015 Apr 28.

Department of Mechanical Engineering, Northwestern University, Evanston, Illinois, United States of America.

Examples of animals evolving similar traits despite the absence of that trait in the last common ancestor, such as the wing and camera-type lens eye in vertebrates and invertebrates, are called cases of convergent evolution. Instances of convergent evolution of locomotory patterns that quantitatively agree with the mechanically optimal solution are very rare. Here, we show that, with respect to a very diverse group of aquatic animals, a mechanically optimal method of swimming with elongated fins has evolved independently at least eight times in both vertebrate and invertebrate swimmers across three different phyla. Read More

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http://dx.doi.org/10.1371/journal.pbio.1002123DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4412495PMC

Classification of non-indigenous species based on their impacts: considerations for application in marine management.

PLoS Biol 2015 Apr 15;13(4):e1002130. Epub 2015 Apr 15.

Marine Invasions Research Laboratory, Smithsonian Environmental Research Center, Edgewater, Maryland, United States of America.

Assessment of the ecological and economic/societal impacts of the introduction of non-indigenous species (NIS) is one of the primary focus areas of bioinvasion science in terrestrial and aquatic environments, and is considered essential to management. A classification system of NIS, based on the magnitude of their environmental impacts, was recently proposed to assist management. Here, we consider the potential application of this classification scheme to the marine environment, and offer a complementary framework focussing on value sets in order to explicitly address marine management concerns. Read More

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http://dx.doi.org/10.1371/journal.pbio.1002130DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4398364PMC
April 2015
16 Reads

Sex-dependent effects of ultraviolet radiation on the marine amphipod Ampithoe valida (Ampithoidae).

J Photochem Photobiol B 2015 Jun 9;147:75-82. Epub 2015 Mar 9.

Estación de Fotobiología Playa Unión and Consejo Nacional de Investigaciones Científicas y Técnicas, Casilla de Correos No. 15, (9103) Rawson, Chubut, Argentina.

The combined effects of solar radiation and diet on the marine amphipod Ampithoe valida were investigated exposing individuals to two solar radiation treatments: PAB (>280 nm, PAR+UV-A+UV-B) and P (>400 nm, only PAR), and three diets: poor (Ulva rigida) and rich (Porphyra columbina) in UV-absorbing compounds (UVAC), and mixed diet: (U. rigida+P. columbina). Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2015.02.025DOI Listing
June 2015
1 Read

Treatment of leptothrix cells with ultrapure water poses a threat to their viability.

Biology (Basel) 2015 Jan 27;4(1):50-66. Epub 2015 Jan 27.

Core Research for Evolutionary Science and Technology (CREST), Japan Science and Technology Agency (JST), Okayama 700-8530, Japan.

The genus Leptothrix, a type of Fe/Mn-oxidizing bacteria, is characterized by its formation of an extracellular and microtubular sheath. Although almost all sheaths harvested from natural aquatic environments are hollow, a few chained bacterial cells are occasionally seen within some sheaths of young stage. We previously reported that sheaths of Leptothrix sp. Read More

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http://dx.doi.org/10.3390/biology4010050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4381217PMC
January 2015
2 Reads

Biomass of algae growth on natural water medium.

J Photochem Photobiol B 2015 Jan 13;142:124-8. Epub 2014 Dec 13.

Department of Soil and Water Conservation, National Chung-Hsing University, Taichung 402, Taiwan.

Algae are the dominant primary producers in aquatic ecosystems. Since algae are highly varied group organisms, which have important functions in ecosystem, and their biomass is an essential biological resource. Currently, algae have been applied increasingly to diverse range of biomass applications. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.12.007DOI Listing
January 2015
2 Reads

Solar-photocatalytic disinfection of Vibrio cholerae by using Ag@ZnO core-shell structure nanocomposites.

J Photochem Photobiol B 2015 Jan 8;142:68-76. Epub 2014 Dec 8.

School of Biotechnology, KIIT University, Bhubaneswar 751024, India; Center of Industrial Technology, KIIT University, Bhubaneswar 751024, India. Electronic address:

Disinfection of Gram-negative bacterium Vibrio cholerae 569B in aqueous matrix by solar-photocatalysis mediated by Ag@ZnO core-shell structure nanocomposite particles was investigated. Silver nanoparticles are synthesized by the reduction of silver perchlorate followed by precipitation of zinc oxide shell and are employed in the photocatalytic disinfection of the model pathogen. Effect of photocatalyst loading and reaction temperature on the disinfection kinetics was studied. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.10.021DOI Listing
January 2015
4 Reads

Riboflavin-sensitized photooxidation of Ceftriaxone and Cefotaxime. Kinetic study and effect on Staphylococcus aureus.

J Photochem Photobiol B 2015 Jan 26;142:35-42. Epub 2014 Nov 26.

Departamento de Química, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Argentina. Electronic address:

Trace amounts of the widely used β-lactam antibiotics (Atbs) in waste water may cause adverse effects on the ecosystems and contribute to the proliferation of antibiotic-resistant bacteria. On these grounds, kinetic and mechanistic aspects of photosensitized degradation of Ceftriaxone (Cft) and Cefotaxime (Ctx), have been studied in pure water by stationary and time-resolved techniques. Additionally, possible implications of these photoprocesses on the antimicrobial activity of the Atbs have also been investigated. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.11.004DOI Listing
January 2015
22 Reads

Photochemical responses of three marine phytoplankton species exposed to ultraviolet radiation and increased temperature: role of photoprotective mechanisms.

J Photochem Photobiol B 2014 Dec 22;141:217-27. Epub 2014 Oct 22.

Estación de Fotobiología Playa Unión (EFPU), Casilla de Correos N° 15, 9103 Rawson, Chubut, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.

We carried out experiments using long-term (5-7 days) exposure of marine phytoplankton species to solar radiation, in order to assess the joint effects of ultraviolet radiation (UVR) and temperature on the photochemical responses and photoprotective mechanisms. In the experiments, carried out at Atlantic coast of Patagonia (43°18.7'S; 65°2. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.09.022DOI Listing
December 2014

Solvatochromic behaviour and larvicidal activity of acridine-3-carboxylates.

J Photochem Photobiol B 2014 Nov 16;140:359-64. Epub 2014 Sep 16.

Unit of Nanotechnology and Bioactive Natural Products, Post Graduate and Research Department of Zoology, C. Abdul Hakeem College, Melvisharam 632509, Vellore District, Tamil Nadu, India.

A new series of substituted ethyl 10-chloro-4-(3,4-dimethoxyphenyl)-2-hydroxy-12-phenyl-1,4,5,6-tetrahydrobenzo[a]acridine-3-carboxylates, 3a-e have been synthesized through NaOH base mediated cyclocondensation of (E)-7-chloro-2-(3,4-dimethoxybenzylidene)-9-phenyl-3,4-dihydroacridin-1(2H)-ones, 1a-e with ethyl acetoacetate. Structures of these synthesized molecules were studied by FT-IR, (1)H NMR, (13)C NMR and EI-MS. And all the synthesized compounds were evaluated for their UV-absorption studies with various metal solutions. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.08.018DOI Listing
November 2014
6 Reads

Adaptive evolution and environmental durability jointly structure phylodynamic patterns in avian influenza viruses.

PLoS Biol 2014 Aug 12;12(8):e1001931. Epub 2014 Aug 12.

Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, United States of America; Center for the Study of Complex Systems, University of Michigan, Ann Arbor, Michigan, United States of America; Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America.

Avian influenza viruses (AIVs) have been pivotal to the origination of human pandemic strains. Despite their scientific and public health significance, however, there remains much to be understood about the ecology and evolution of AIVs in wild birds, where major pools of genetic diversity are generated and maintained. Here, we present comparative phylodynamic analyses of human and AIVs in North America, demonstrating (i) significantly higher standing genetic diversity and (ii) phylogenetic trees with a weaker signature of immune escape in AIVs than in human viruses. Read More

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http://dx.doi.org/10.1371/journal.pbio.1001931DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130664PMC
August 2014
6 Reads

Targeting global protected area expansion for imperiled biodiversity.

PLoS Biol 2014 Jun 24;12(6):e1001891. Epub 2014 Jun 24.

Global Conservation Program, Wildlife Conservation Society, New York, New York, United States of America; School of Geography, Planning and Environmental Management, University of Queensland, Brisbane, Australia.

Governments have agreed to expand the global protected area network from 13% to 17% of the world's land surface by 2020 (Aichi target 11) and to prevent the further loss of known threatened species (Aichi target 12). These targets are interdependent, as protected areas can stem biodiversity loss when strategically located and effectively managed. However, the global protected area estate is currently biased toward locations that are cheap to protect and away from important areas for biodiversity. Read More

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https://www.plos.org/wp-content/uploads/2014/06/pbio.1001891
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http://dx.plos.org/10.1371/journal.pbio.1001891
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http://dx.doi.org/10.1371/journal.pbio.1001891DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4068989PMC
June 2014
12 Reads

An exploration of the relationships between microalgae biomass growth and related environmental variables.

J Photochem Photobiol B 2014 Jun 18;135:44-7. Epub 2014 Apr 18.

Department of Soil and Water Conservation, National Chung-Hsing University, Taichung 402, Taiwan.

Algal community plays critical roles as the primary producer and as a major biotic component in the nutrient/energy cycle in aquatic ecosystems. The potential of fresh water algal biomass to mitigate global problems of food and energy and its significance as a carbon sink have been recognized. In this study, with a view to decreasing the cost of producing algal biomass for various purposes, the natural medium of unsupplemented freshwater was applied to mimic the real world to produce algal biomass. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.04.001DOI Listing

Photosynthesis and photosynthetic pigments in the flagellate Euglena gracilis - as sensitive endpoints for toxicity evaluation of liquid detergents.

J Photochem Photobiol B 2014 Apr 3;133:18-26. Epub 2014 Mar 3.

Neue Str. 9, 91096 Möhrendorf, Germany.

The present study was designed to validate the applicability of photosynthetic performance using a PAM fluorometer and photosynthetic pigments in Euglena gracilis as endpoint parameters in toxicity assessment of liquid detergents using a dish washing liquid detergent during short- (0-72h) and long-term (7days) exposure. In short-term experiments, the detergent affected the photosynthetic efficiency with EC50 values (calculated for Fv/Fm) of 22.07%, 7. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.02.011DOI Listing
April 2014
27 Reads

Ultraviolet radiation dose calculation for algal suspensions using UVA and UVB extinction coefficients.

J Photochem Photobiol B 2014 Mar 15;132:94-101. Epub 2014 Feb 15.

EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, P.O. Box 611, 8600 Dübendorf, Switzerland.

Although the biological importance of ultraviolet light (UVR) attenuation has been recognised in marine and freshwater environments, it is not generally considered in in vitro ecotoxicological studies using algal cell suspensions. In this study, UVA and UVB extinction were determined for cultures of algae with varying cell densities, and the data were used to calculate the corresponding extinction coefficients for both UVA and UVB wavelength ranges. Integrating the Beer-Lambert equation to account for changes in the radiation intensity reaching each depth, from the surface until the bottom of the experimental vessel, we obtained the average UVA and UVB intensity to which the cultured algal cells were exposed. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2014.02.005DOI Listing
March 2014
4 Reads