135 results match your criteria Aquatic Biology[Journal]


Differing effects of size and lifestyle on bone structure in mammals.

BMC Biol 2021 Apr 29;19(1):87. Epub 2021 Apr 29.

Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, 10115, Berlin, Germany.

Background: Mammals are a highly diverse group, with body mass ranging from 2 g to 170 t, and encompassing species with terrestrial, aquatic, aerial, and subterranean lifestyles. The skeleton is involved in most aspects of vertebrate life history, but while previous macroevolutionary analyses have shown that structural, phylogenetic, and functional factors influence the gross morphology of skeletal elements, their inner structure has received comparatively little attention. Here we analysed bone structure of the humerus and mid-lumbar vertebrae across mammals and their correlations with different lifestyles and body size. Read More

View Article and Full-Text PDF

Effects on Steroid 5-Alpha Reductase Gene Expression of Thai Rice Bran Extracts and Molecular Dynamics Study on SRD5A2.

Biology (Basel) 2021 Apr 11;10(4). Epub 2021 Apr 11.

Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.

Steroid 5-alpha reductases (SRD5As) are responsible for the conversion of testosterone to dihydrotestosterone, a potent androgen, which is the aetiologic factor of androgenetic alopecia. This study aimed to compare the gene expression suppression activity exerted by Thai rice bran extracts and their components and investigate the interactional mechanism between bioactive compounds and SRD5A2 using molecular dynamics (MD) simulation. Bran of cv. Read More

View Article and Full-Text PDF

Hydrological, Environmental and Taxonomical Heterogeneity during the Transition from Drying to Flowing Conditions in a Mediterranean Intermittent River.

Biology (Basel) 2021 Apr 9;10(4). Epub 2021 Apr 9.

Centre of Environmental Sciences EULA-Chile and CHRIAM Water Research Centre, Department of Aquatic Systems, Faculty of Environmental Sciences, Universidad de Concepción, P.O. Box 160-C Concepción, Chile.

Intermittent rivers and ephemeral streams (IRES) are increasingly studied because of their often-unique aquatic and terrestrial biodiversity, biogeochemical processes and associated ecosystem services. This study is the first to examine the hydrological, physicochemical and taxonomic variability during the dry-wet transition of an intermittent river in the Chilean Mediterranean Zone. Based on 30-years of river monitoring data and the TREHS tool, the hydrology of the river was characterised. Read More

View Article and Full-Text PDF

A Current Update on the Distribution, Morphological Features, and Genetic Identity of the Southeast Asian Mahseers, Species.

Biology (Basel) 2021 Apr 1;10(4). Epub 2021 Apr 1.

Brain Research Institute Monash Sunway (BRIMS), Jeffrey Cheah School of Medicine and Health Science, Monash University Malaysia, Bandar Sunway 47500, Malaysia.

The king of rivers or mahseer comprises three genera: , and under the Cyprinidae family. The genus has been classified as the true mahseer due to the presence of a median lobe among the three genera. The species are widely distributed across Southeast (SE) Asia, and 13 species have been reported previously: , , , and . Read More

View Article and Full-Text PDF

Effects of Feed Mixed with Lactic Acid Bacteria and Carbon, Nitrogen, Phosphorus Supplied to the Water on the Growth and Survival Rate of White Leg Shrimp () Infected with Acute Hepatopancreatic Necrosis Disease Caused by .

Biology (Basel) 2021 Mar 30;10(4). Epub 2021 Mar 30.

Department of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, Ninh Kieu District, Can Tho 94000, Vietnam.

This study aimed to evaluate the growth, survival rate, and resistance to acute hepatopancreatic necrosis disease (AHPND) of white leg shrimp () by using , , and mixed with feed, and at the same time supplying CNP in a ratio of 15:1:0.1 to the water. As a result, the treatments that shrimp were fed with feed containing lactic acid bacteria (LAB), especially , have increased shrimp growth, total hemocyte cells, granulocyte cells, and hyaline cells significantly ( < 0. Read More

View Article and Full-Text PDF

The Impact of Sampling Season and Catching Site (Wild and Aquaculture) on Gut Microbiota Composition and Diversity of Nile Tilapia ().

Biology (Basel) 2021 Mar 1;10(3). Epub 2021 Mar 1.

Institute of Food Science, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria.

The gut microbiota of fishes is known to play an essential role in diverse aspects of host biology. The gut microbiota of fish is affected by various environmental parameters, including temperature changes, salinity and diet. Studies of effect of environment on gut microbiota enables to have a further understanding of what comprises a healthy microbiota under different environmental conditions. Read More

View Article and Full-Text PDF

Hazardous Effects of SiO Nanoparticles on Liver and Kidney Functions, Histopathology Characteristics, and Transcriptomic Responses in Nile Tilapia () Juveniles.

Biology (Basel) 2021 Mar 2;10(3). Epub 2021 Mar 2.

Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32897, Egypt.

The current investigation assessed the impacts of sub-lethal concentrations of silicon dioxide nanoparticles (SiONPs) on hepato-renal functions, histopathological characteristics, and gene transcription in gills and liver of Nile tilapia juveniles. Fish were exposed to 20, 40, and 100 mg/L of SiONPs for 3 weeks. Pairwise comparisons with the control group showed a significant dose-dependent elevation in serum ALP, ALT, and AST enzyme activities as well as blood urea and creatinine levels in SiONP-intoxicated groups. Read More

View Article and Full-Text PDF

A Comparative Analysis of Aquatic and Polyethylene-Associated Antibiotic-Resistant Microbiota in the Mediterranean Sea.

Biology (Basel) 2021 Mar 6;10(3). Epub 2021 Mar 6.

Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Bd. 16, 90128 Palermo, Italy.

In this study, we evaluated the microbiome and the resistome profile of water and fragments of polyethylene (PE) waste collected at the same time from a stream and the seawater in a coastal area of Northwestern Sicily. Although a core microbiome was determined by sequencing of the V3-V4 region of the bacterial 16S rDNA gene, quantitative differences were found among the microbial communities on PE waste and the corresponding water samples. Our findings indicated that PE waste contains a more abundant and increased core microbiome diversity than the corresponding water samples. Read More

View Article and Full-Text PDF

Neurotoxicity in Marine Invertebrates: An Update.

Biology (Basel) 2021 Feb 18;10(2). Epub 2021 Feb 18.

Istituto per la Ricerca e l'Innovazione Biomedica IRIB, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy.

Invertebrates represent about 95% of existing species, and most of them belong to aquatic ecosystems. Marine invertebrates are found at intermediate levels of the food chain and, therefore, they play a central role in the biodiversity of ecosystems. Furthermore, these organisms have a short life cycle, easy laboratory manipulation, and high sensitivity to marine pollution and, therefore, they are considered to be optimal bioindicators for assessing detrimental chemical agents that are related to the marine environment and with potential toxicity to human health, including neurotoxicity. Read More

View Article and Full-Text PDF
February 2021

A Model Construction of Starvation Induces Hepatic Steatosis and Transcriptome Analysis in Zebrafish Larvae.

Biology (Basel) 2021 Jan 27;10(2). Epub 2021 Jan 27.

Institute of Three Gorges Ecological Fisheries of Chongqing, College of Fisheries, Southwest University, Chongqing 400715, China.

Hepatic steatosis caused by starvation, resulting in non-alcoholic fatty liver disease (NAFLD), has been a research topic of human clinical and animal experiments. To understand the molecular mechanisms underlying the triggering of abnormal liver metabolism by starvation, thus inducing hepatic lipid accumulation, we used zebrafish larvae to establish a starvation-induced hepatic steatosis model and conducted comparative transcriptome analysis by RNA-seq. We demonstrated that the incidence of larvae steatosis is positively correlated with starvation time. Read More

View Article and Full-Text PDF
January 2021

Physiology: An Important Tool to Assess the Welfare of Aquatic Animals.

Biology (Basel) 2021 Jan 15;10(1). Epub 2021 Jan 15.

Department of Animal Physiology, Faculty of Biological Sciences, University Complutense, 28040 Madrid, Spain.

The assessment of welfare in aquatic animals is currently under debate, especially concerning those kept by humans. The classic concept of animal welfare includes three elements: The emotional state of the organism (including the absence of negative experiences), the possibility of expressing normal behaviors, and the proper functioning of the organism. While methods for evaluating their emotions (such as fear, pain, and anguish) are currently being developed for aquatic species and understanding the natural behavior of all aquatic taxa that interact with humans is a task that requires more time, the evaluation of internal responses in the organisms can be carried out using analytical tools. Read More

View Article and Full-Text PDF
January 2021

Rapid protein evolution, organellar reductions, and invasive intronic elements in the marine aerobic parasite dinoflagellate Amoebophrya spp.

BMC Biol 2021 Jan 6;19(1). Epub 2021 Jan 6.

Sorbonne Université, CNRS, UMR7144 Adaptation et Diversité en Milieu Marin, Ecology of Marine Plankton (ECOMAP), Station Biologique de Roscoff SBR, 29680, Roscoff, France.

Background: Dinoflagellates are aquatic protists particularly widespread in the oceans worldwide. Some are responsible for toxic blooms while others live in symbiotic relationships, either as mutualistic symbionts in corals or as parasites infecting other protists and animals. Dinoflagellates harbor atypically large genomes (~ 3 to 250 Gb), with gene organization and gene expression patterns very different from closely related apicomplexan parasites. Read More

View Article and Full-Text PDF
January 2021

Revisiting the Teleost Thymus: Current Knowledge and Future Perspectives.

Biology (Basel) 2020 Dec 25;10(1). Epub 2020 Dec 25.

Laboratory of Immunology, Center of Aquatic Biotechnology, Department of Biology, Faculty of Chemistry and Biology, University of Santiago of Chile, Av. Bernardo O'Higgins, Estación Central, Santiago 3363, Chile.

The thymus in vertebrates plays a critical role in producing functionally competent T-lymphocytes. Phylogenetically, the thymus emerges early during evolution in jawed cartilaginous fish, and it is usually a bilateral organ placed subcutaneously at the dorsal commissure of the operculum. In this review, we summarize the current understanding of the thymus localization, histology studies, cell composition, and function in teleost fishes. Read More

View Article and Full-Text PDF
December 2020

Can Biomarkers Respond Upon Freshwater Pollution?-A Moss-Bag Approach.

Biology (Basel) 2020 Dec 22;10(1). Epub 2020 Dec 22.

Faculty of Biology, Plovdiv University, 24 Tsar Asen Street, 4000 Plovdiv, Bulgaria.

Moss-bags were applied to study the effect of contamination in three standing water bodies in Bulgaria (Kardzhali, Studen Kladenets and Zhrebchevo Reservoirs), the first two with old industrial contamination and the last polluted with short-chain chlorinated paraffins (SCCPs). Hedw. collected from background (unpolluted) site was placed in cages for a period of 30 days. Read More

View Article and Full-Text PDF
December 2020

Effects of climate change on parasites and disease in estuarine and nearshore environments.

Authors:
James E Byers

PLoS Biol 2020 11 24;18(11):e3000743. Epub 2020 Nov 24.

Odum School of Ecology, University of Georgia, Athens, Georgia, United States of America.

Information on parasites and disease in marine ecosystems lags behind terrestrial systems, increasing the challenge of predicting responses of marine host-parasite systems to climate change. However, here I examine several generalizable aspects and research priorities. First, I advocate that quantification and comparison of host and parasite thermal performance curves is a smart approach to improve predictions of temperature effects on disease. Read More

View Article and Full-Text PDF
November 2020

Expanding conservation culturomics and iEcology from terrestrial to aquatic realms.

PLoS Biol 2020 10 29;18(10):e3000935. Epub 2020 Oct 29.

Institute of Biological and Health Sciences, Federal University of Alagoas, Av. Lourival Melo Mota, Maceió, Brazil.

The ongoing digital revolution in the age of big data is opening new research opportunities. Culturomics and iEcology, two emerging research areas based on the analysis of online data resources, can provide novel scientific insights and inform conservation and management efforts. To date, culturomics and iEcology have been applied primarily in the terrestrial realm. Read More

View Article and Full-Text PDF
October 2020

Differential Production of Phenolics, Lipids, Carbohydrates and Proteins in Stressed and Unstressed Aquatic Plants, and .

Biology (Basel) 2020 Oct 19;9(10). Epub 2020 Oct 19.

School of Sciences, RMIT University, Bundoora, VIC 3083, Australia.

The metabolic plasticity of shikimate and phenylpropanoid pathways redirects carbon flow to different sink products in order to protect sessile plants from environmental stresses. This study assessed the biochemical responses of two Azolla species, and , to the combined effects of environmental and nutritional stresses experienced while growing outdoors under Australian summer conditions. These stresses triggered a more than 2-fold increase in the production of total phenols and their representatives, anthocyanins (up to 18-fold), flavonoids (up to 4. Read More

View Article and Full-Text PDF
October 2020

Vaccination Route Determines the Kinetics and Magnitude of Nasal Innate Immune Responses in Rainbow Trout ().

Biology (Basel) 2020 Oct 1;9(10). Epub 2020 Oct 1.

Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA.

Many pathogens infect animal hosts via the nasal route. Thus, understanding how vaccination stimulates early nasal immune responses is critical for animal and human health. Vaccination is the most effective method to prevent disease outbreaks in farmed fish. Read More

View Article and Full-Text PDF
October 2020

Functional Feeding Groups of Aquatic Insects Influence Trace Element Accumulation: Findings for Filterers, Scrapers and Predators from the Po Basin.

Biology (Basel) 2020 Sep 14;9(9). Epub 2020 Sep 14.

Department of Life Sciences, University of Torino, via Accademia Albertina 13, Italy-ALPSTREAM Research Centre Ostana (CN), 10123 Torino, Italy.

For this study, we measured the concentrations of 23 trace elements (Al, As, Ba, Bi, Cd, Cr, Co, Cu, Fe, Ga, Hg, In, Li, Mn, Mo, Ni, Pb, Se, Sr, Ti, Tl, V, and Zn) in the whole bodies of three functional feeding groups (FFG) (filterers-Hydropsychidae, scrapers-Heptageniidae, and predators-Odonata) of aquatic insects collected from two sites in the Po basin (Po Settimo and Malone Front, Northwest Italy) to determine: (a) how FFG influence trace element accumulations, (b) if scrapers accumulate higher elements compared to the other FFG, since they graze on periphyton, which represents one of the major sinks of metals, and (c) the potential use of macroinvertebrates to assess the bioavailability of trace elements in freshwater. The hierarchical clustering analysis generated three main groups based on trace element concentrations: the most abundant elements were Fe and Al, followed by Sr, In, Zn, V, Mo, and Cu. Tl was below the limit of detection (LOD) in all FFG. Read More

View Article and Full-Text PDF
September 2020

Skim-Sequencing Based Genotyping Reveals Genetic Divergence of the Wild and Domesticated Population of Black Tiger Shrimp () in the Indo-Pacific Region.

Biology (Basel) 2020 Sep 7;9(9). Epub 2020 Sep 7.

Department of Aquatic Bioscience, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

The domestication of a wild-caught aquatic animal is an evolutionary process, which results in genetic discrimination at the genomic level in response to strong artificial selection. Although black tiger shrimp () is one of the most commercially important aquaculture species, a systematic assessment of genetic divergence and structure of wild-caught and domesticated broodstock populations of the species is yet to be documented. Therefore, we used skim sequencing (SkimSeq) based genotyping approach to investigate the genetic structure of 50 broodstock individuals of species, collected from five sampling sites ( = 10 in each site) across their distribution in Indo-Pacific regions. Read More

View Article and Full-Text PDF
September 2020

Potential Involvement of lncRNAs in the Modulation of the Transcriptome Response to Nodavirus Challenge in European Sea Bass ( L.).

Biology (Basel) 2020 Jul 15;9(7). Epub 2020 Jul 15.

Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), C/Eduardo Cabello 6, 36208 Vigo, Spain.

Long noncoding RNAs (lncRNAs) are being increasingly recognised as key modulators of various biological mechanisms, including the immune response. Although investigations in teleosts are still lagging behind those conducted in mammals, current research indicates that lncRNAs play a pivotal role in the response of fish to a variety of pathogens. During the last several years, interest in lncRNAs has increased considerably, and a small but notable number of publications have reported the modulation of the lncRNA profile in some fish species after pathogen challenge. Read More

View Article and Full-Text PDF

Biogeochemical and photobiological responses of subarctic lakes to UV radiation.

J Photochem Photobiol B 2020 Aug 11;209:111932. Epub 2020 Jun 11.

Faculty of Biological and Environmental Sciences, Ecosystems and Environment Research Programme, University of Helsinki, Niemenkatu 73, 15140 Lahti, Finland.

Solar ultraviolet radiation (UV) induces photodegradation of optically and functionally important organic compounds in lakes and may negatively impact aquatic biota. We disentangled UV impacts on dissolved organic matter (DOM) transformation, and algal and zoobenthic micro-organisms in two shallow subarctic lakes in NW Finnish Lapland; in a high-UV + low-DOM (tundra, Iso-Jehkas) and a low-UV + high-DOM (mountain birch woodland, Mukkavaara) system. In addition to site and seasonal comparisons, in situ experiments with three treatments (DARK, photosynthetically active radiation [PAR], UV + PAR) were set up floating on the lakes for four weeks during midsummer. Read More

View Article and Full-Text PDF

Stimulus-specific behavioral responses of zebrafish to a large range of odors exhibit individual variability.

BMC Biol 2020 06 15;18(1):66. Epub 2020 Jun 15.

Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7030, Trondheim, Norway.

Background: Odor-driven behaviors such as feeding, mating, and predator avoidance are crucial for animal survival. The neural pathways processing these behaviors have been well characterized in a number of species, and involve the activity of diverse brain regions following stimulation of the olfactory bulb by specific odors. However, while the zebrafish olfactory circuitry is well understood, a comprehensive characterization linking odor-driven behaviors to specific odors is needed to better relate olfactory computations to animal responses. Read More

View Article and Full-Text PDF

An Acromegaly Disease Zebrafish Model Reveals Decline in Body Stem Cell Number along with Signs of Premature Aging.

Biology (Basel) 2020 Jun 7;9(6). Epub 2020 Jun 7.

Laboratory of Aquatic Molecular Biology and Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8654, Japan.

In our previous publication, it was shown that growth hormone (GH) excess in acromegaly affects the cell integrity of somatic cells through increased DNA damage throughout the body and impaired DNA repair pathways. Acromegaly is a hormone disorder pathological condition that develops as a result of growth hormone over-secretion from the pituitary gland. We produced a zebrafish acromegaly model to gain a better understanding of the excess GH effects at the cellular level. Read More

View Article and Full-Text PDF

Genomes of the dinoflagellate Polarella glacialis encode tandemly repeated single-exon genes with adaptive functions.

BMC Biol 2020 05 24;18(1):56. Epub 2020 May 24.

Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.

Background: Dinoflagellates are taxonomically diverse and ecologically important phytoplankton that are ubiquitously present in marine and freshwater environments. Mostly photosynthetic, dinoflagellates provide the basis of aquatic primary production; most taxa are free-living, while some can form symbiotic and parasitic associations with other organisms. However, knowledge of the molecular mechanisms that underpin the adaptation of these organisms to diverse ecological niches is limited by the scarce availability of genomic data, partly due to their large genome sizes estimated up to 250 Gbp. Read More

View Article and Full-Text PDF

An automated aquatic rack system for rearing marine invertebrates.

BMC Biol 2020 05 4;18(1):46. Epub 2020 May 4.

Department of Cell & Developmental Biology, University of Illinois, 601 South Goodwin Ave., Urbana, IL, 61801, USA.

Background: One hundred years ago, marine organisms were the dominant systems for the study of developmental biology. The challenges in rearing these organisms outside of a marine setting ultimately contributed to a shift towards work on a smaller number of so-called model systems. Those animals are typically non-marine organisms with advantages afforded by short life cycles, high fecundity, and relative ease in laboratory culture. Read More

View Article and Full-Text PDF

Every fifth published metagenome is not available to science.

PLoS Biol 2020 04 3;18(4):e3000698. Epub 2020 Apr 3.

Molecular Ecology Group (MEG), Water Research Institute, National Research Council of Italy, Verbania Pallanza, Italy.

Have you ever sought to use metagenomic DNA sequences reported in scientific publications? Were you successful? Here, we reveal that metagenomes from no fewer than 20% of the papers found in our literature search, published between 2016 and 2019, were not deposited in a repository or were simply inaccessible. The proportion of inaccessible data within the literature has been increasing year-on-year. Noncompliance with Open Data is best predicted by the scientific discipline of the journal. Read More

View Article and Full-Text PDF

Metatranscriptomic and Metagenomic Analysis of Biological Diversity in Subglacial Lake Vostok (Antarctica).

Biology (Basel) 2020 Mar 16;9(3). Epub 2020 Mar 16.

Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA.

A combined metatranscriptomic and metagenomic study of Vostok (Antarctica) ice core sections from glacial, basal, and lake water accretion ice yielded sequences that indicated a wide variety of species and possible conditions at the base of the glacier and in subglacial Lake Vostok. Few organisms were in common among the basal ice and accretion ice samples, suggesting little transmission of viable organisms from the basal ice meltwater into the lake water. Additionally, samples of accretion ice, each of which originated from water in several locations of the shallow embayment, exhibit only small amounts of mixing of species. Read More

View Article and Full-Text PDF

Extracellular secretion of superoxide is regulated by photosynthetic electron transport in the noxious red-tide-forming raphidophyte Chattonella antiqua.

J Photochem Photobiol B 2020 Apr 21;205:111839. Epub 2020 Feb 21.

Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan. Electronic address:

The raphidophyte Chattonella antiqua is a noxious red-tide-forming alga that harms fish culture and the aquatic environment. Chattonella antiqua produces and secretes superoxide anions (O), and excessive secretion of O into the water has been associated with fish mortality. It is known that strong light stimulates the production of O in Chattonella spp. Read More

View Article and Full-Text PDF

Silver nanoparticles in dye effluent treatment: A review on synthesis, treatment methods, mechanisms, photocatalytic degradation, toxic effects and mitigation of toxicity.

J Photochem Photobiol B 2020 Apr 21;205:111823. Epub 2020 Feb 21.

Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung City 807, Taiwan; Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung City 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung City 807, Taiwan. Electronic address:

The current scenario of water resources shows the dominance of pollution caused by the draining of industrial effluents. The polluted waters have resulted in severe health and environmental hazards urging for a suitable alternative to resolve the implications. Various physical and chemical treatment steps currently in use for dye effluent treatment are more time consuming, cost-intensive, and less effective. Read More

View Article and Full-Text PDF