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https://www.readbyqxmd.com/read/28933727/venomics-of-remipede-crustaceans-reveals-novel-peptide-diversity-and-illuminates-the-venom-s-biological-role
#1
Björn M von Reumont, Eivind A B Undheim, Robin-Tobias Jauss, Ronald A Jenner
We report the first integrated proteomic and transcriptomic investigation of a crustacean venom. Remipede crustaceans are the venomous sister group of hexapods, and the venom glands of the remipede Xibalbanus tulumensis express a considerably more complex cocktail of proteins and peptides than previously thought. We identified 32 venom protein families, including 13 novel peptide families that we name xibalbins, four of which lack similarities to any known structural class. Our proteomic data confirm the presence in the venom of 19 of the 32 families...
July 26, 2017: Toxins
https://www.readbyqxmd.com/read/28932924/when-gis-zooms-in-spatio-genetic-maps-of-multipaternity-in-armadillidium-vulgare
#2
Nicolas Bech, Charlotte Depeux, Sylvine Durand, Catherine Debenest, Alexandra Lafitte, Sophie Beltran-Bech
Geographic information system (GIS) tools are designed to illustrate, analyse and integrate geographic or spatial data, usually on a macroscopic scale. By contrast, genetic tools focus on a microscopic scale. Because in reality, landscapes have no predefined scale, our original study aims to develop a new approach, combining both cartographic and genetic approaches to explore microscopic landscapes. For this, we focused on Armadillidium vulgare, a terrestrial isopod model in which evolutionary pressures imposed by terrestrial life have led to the development of internal fertilisation and, consequently, to associated physiological changes...
September 20, 2017: Genetica
https://www.readbyqxmd.com/read/28931493/homarus-gammarus-crustacea-decapoda-larvae-under-an-ocean-acidification-scenario-responses-across-different-levels-of-biological-organization
#3
Lénia D Rato, Sara C Novais, Marco F L Lemos, Luís M F Alves, Sérgio M Leandro
The present study evaluated the effects of exposure to different target pCO2 levels: control (C: 370μatm, pH = 8.15) and ocean acidification (OA: 710μatm, pH=7.85) on development and biochemical responses related with oxidative stress and energy metabolism during the crustacean Homarus gammarus (L.) larval development, integrating different levels of biological organization. After hatching in the laboratory, larvae from the same female brood were exposed to the described conditions from hatching until reaching Stage III (last larval stage - 11 days)...
September 17, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28926816/phycoremediation-of-landfill-leachate-with-the-chlorophyte-chlamydomonas-sp-sw15arl-and-evaluation-of-toxicity-pre-and-post-treatment
#4
Andrea Paskuliakova, Ted McGowan, Steve Tonry, Nicolas Touzet
Landfill leachate treatment is an ongoing challenge in the wastewater management of existing sanitary landfill sites due to the complex nature of leachates and their heavy pollutant load. There is a continuous interest in treatment biotechnologies with expected added benefits for resource recovery; microalgal bioremediation is seen as promising in this regard. Toxicity reduction of landfill leachate subsequent to phycoremediation was investigated in this study. The treatment eventuated from the growth of the ammonia tolerant microalgal strain Chlamydomonas sp...
September 15, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28924190/microbiome-of-pacific-whiteleg-shrimp-reveals-differential-bacterial-community-composition-between-wild-aquacultured-and-ahpnd-ems-outbreak-conditions
#5
Fernanda Cornejo-Granados, Alonso A Lopez-Zavala, Luigui Gallardo-Becerra, Alfredo Mendoza-Vargas, Filiberto Sánchez, Rodrigo Vichido, Luis G Brieba, Maria Teresa Viana, Rogerio R Sotelo-Mundo, Adrián Ochoa-Leyva
Crustaceans form the second largest subphylum on Earth, which includes Litopeneaus vannamei (Pacific whiteleg shrimp), one of the most cultured shrimp worldwide. Despite efforts to study the shrimp microbiota, little is known about it from shrimp obtained from the open sea and the role that aquaculture plays in microbiota remodeling. Here, the microbiota from the hepatopancreas and intestine of wild type (wt) and aquacultured whiteleg shrimp and pond sediment from hatcheries were characterized using sequencing of seven hypervariable regions of the 16S rRNA gene...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923556/de-novo-assembly-and-transcriptome-characterization-of-the-freshwater-prawn-palaemonetes-argentinus-implications-for-a-detoxification-response
#6
C Fernando García, Nicolas Pedrini, Arturo Sánchez-Paz, Carlos S Reyna-Blanco, Sabrina Lavarias, Adriana Muhlia-Almazán, Analía Fernández-Giménez, Aldana Laino, Enrique de-la-Re-Vega, German Lukaszewicz, Alonso A López-Zavala, Luis G Brieba, Michael F Criscitello, Jesús S Carrasco-Miranda, Karina D García-Orozco, Adrian Ochoa-Leyva, Enrique Rudiño-Piñera, Alejandro Sanchez-Flores, Rogerio R Sotelo-Mundo
Palaemonetes argentinus, an abundant freshwater prawn species in the northern and central region of Argentina, has been used as a bioindicator of environmental pollutants as it displays a very high sensitivity to pollutants exposure. Despite their extraordinary ecological relevance, a lack of genomic information has hindered a more thorough understanding of the molecular mechanisms potentially involved in detoxification processes of this species. Thus, transcriptomic profiling studies represent a promising approach to overcome the limitations imposed by the lack of extensive genomic resources for P...
September 8, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28922722/molecular-mechanisms-of-anticancer-effects-of-glucosamine
#7
REVIEW
Fatemeh Zahedipour, Razieh Dalirfardouei, Gholamreza Karimi, Khadijeh Jamialahmadi
Glucosamine is an amino sugar that is produced naturally in human body. It is an essential carbohydrate component of many cellular glycoproteins, glycolipids, and glycosaminoglycans (GAGs). This popular over-the-counter supplement is also found in the exoskeleton of crustaceans. Glucosamine and its derivatives have a long history in medicine for inflammatory conditions specially to relieve arthritis. This dietary supplement has numerous biological and pharmacological properties, including anti-inflammatory, antioxidant, anti-aging, anti-fibrotic, neuroprotective and cardioprotective activities...
September 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28919018/de-novo-transcriptome-assembly-of-the-calanoid-copepod-neocalanus-flemingeri-a-new-resource-for-emergence-from-diapause
#8
Vittoria Roncalli, Matthew C Cieslak, Stephanie A Sommer, Russell R Hopcroft, Petra H Lenz
Copepods, small planktonic crustaceans, are key links between primary producers and upper trophic levels, including many economically important fishes. In the subarctic North Pacific, the life cycle of copepods like Neocalanus flemingeri includes an ontogenetic migration to depth followed by a period of diapause (a type of dormancy) characterized by arrested development and low metabolic activity. The end of diapause is marked by the production of the first brood of eggs. Recent temperature anomalies in the North Pacific have raised concerns about potential negative effects on N...
September 14, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28917214/novel-5-nitrofurfuryl-substituted-esters-of-phosphonoglycine-their-synthesis-and-phyto-and-ecotoxicological-properties
#9
Jarosław Lewkowski, Marta Morawska, Rafał Karpowicz, Piotr Rychter, Diana Rogacz, Kamila Lewicka
Since aminophosphonate-based herbicides like glyphosate are currently one of the most popular and widely applied active agent in agrochemistry, there is an urgent need for searching new compounds among this family with potential herbicidal activity, but exhibiting low toxicity against surrounding environment. Six new (5-nitrofurfuryl)-derived aminophosphonates were synthesized for the first time and apart from the only one example of N-benzylamino(5-nitrofuryl)-methylphosphonic acid, it was the first time in the history, when this class of compounds was prepared...
September 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28915415/transcriptomic-analysis-of-the-hepatopancreas-induced-by-eyestalk-ablation-in-shrimp-litopenaeus-vannamei
#10
Ji-Hyun Lee, Indyaswan T Suryaningtyas, Tae-Ho Yoon, Jeong Min Shim, Hyun Park, Hyun-Woo Kim
Although eyestalk ablation (ESA) is currently considered the most effective method to facilitate molting and maturation, its physiological responses are still not clearly explained in decapod crustaceans. In this study, we analyzed the hepatopancreatic transcriptomes of Litopenaeus vannamei after ESA using the Illumina Miseq platform. After screening 53,029 contigs with high cutoff values (fold change>|10|; P-value<0.05; RPKM>1), we were able to identify 105 differentially expressed genes (DEGs), of which 100 were up-regulated and five were down-regulated...
September 8, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28913993/a-retrospective-study-of-korean-adults-with-food-allergy-differences-in-phenotypes-and-causes
#11
So Hee Lee, Ga Young Ban, Kyunguk Jeong, Yoo Seob Shin, Hae Sim Park, Sooyoung Lee, Young Min Ye
PURPOSE: Increasing in prevalence, food allergy (FA) is becoming an important public health concern. In Korean adults, however, clinical phenotypes and causes of FA have not been studied. We aimed to study common causative allergens and clinical manifestations of FA in Korean adults. METHODS: This study was conducted as a retrospective review of medical records for 95 patients (≥19 years old) diagnosed with FA from September 2014 to August 2015 at a single university hospital...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28904786/phylogenetic-position-and-age-of-lake-baikal-candonids-crustacea-ostracoda-inferred-from-multigene-sequence-analyzes-and-molecular-dating
#12
Ivana Karanovic, Tatiana Ya Sitnikova
With 104 endemic species family Candonidae is one of the most diverse crustacean groups in Lake Baikal, yet their phylogenetic relationships and position in the family have not been addressed so far. Here, we study the phylogenetic position of Baikal candonids within the family and their evolutionary history using molecular markers for the first time since their original description. We choose 10 Baikal and 28 species from around the world, and three ribosomal RNA-s (18S, 28S, and 16S), and analyze individual and concatenated datasets using Bayesian Inference in MrBayes and BEAST...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28901128/can-toxicokinetic-and-toxicodynamic-modelling-be-used-to-understand-and-predict-synergistic-interactions-between-chemicals
#13
Nina Cedergreen, Kristoffer Dalhoff, Dan Li, Michele Gottardi, Andreas C Kretschmann
Some chemicals are known to enhance the effect of other chemicals beyond what can be predicted with standard mixture models, such as concentration addition and independent action. These chemicals are called synergists. Up until now, no models exist that can predict the joint effect of mixtures including synergists. The aim of the present study is to develop a mechanistic toxicokinetic (TK) and toxicodynamic (TD) model for the synergistic mixture of the azole fungicide, propiconazole (the synergist), and the insecticide, α-cypermethrin, on the mortality of the crustacean D...
September 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28893643/neuropeptide-discovery-in-proasellus-cavaticus-prediction-of-the-first-large-scale-peptidome-for-a-member-of-the-isopoda-using-a-publicly-accessible-transcriptome
#14
Andrew E Christie
In silico transcriptome mining is one of the most effective methods for neuropeptide discovery in crustaceans, particularly for species that are small, rare or from geographically inaccessible habitats that make obtaining the large pools of tissue needed for other peptide discovery platforms impractical. Via this approach, large peptidomes have recently been described for members of many of the higher crustacean taxa, one notable exception being the Isopoda; no peptidome has been predicted for any member of this malacostracan order...
September 8, 2017: Peptides
https://www.readbyqxmd.com/read/28893338/a-cluster-of-patients-with-rhabdomyolysis-after-eating-crayfish
#15
Wen-Xuan Yang, Kit-Ling Fan, Ling-Pong Leung
Crayfish or Procambarus clarkii is a freshwater crustacean with worldwide distribution. Tons of crayfish are consumed each year. In this report, four adult patients with rhabdomyolysis after consuming crayfish were described. All of them presented to the emergency department with myalgia. The diagnosis of rhabdomyolysis was supported by an elevated creatine kinase level. All recovered with supportive treatment. The clinical picture of these 4 patients was compatible with Haff disease. Haff disease is a syndrome in which rhabdomyolysis develops subsequent to consumption of certain cooked seafood...
September 12, 2017: CJEM
https://www.readbyqxmd.com/read/28892861/assessment-of-the-hazard-of-nine-doped-lanthanides-based-ceramic-oxides-to-four-aquatic-species
#16
Irina Blinova, Heiki Vija, Aljona Lukjanova, Marge Muna, Guttorm Syvertsen-Wiig, Anne Kahru
The risk of environmental pollution with rare earth oxides rises in line with increasing application of these compounds in different sectors. However, data on potential environmental hazard of lanthanides is scarce and concerns mostly Ce and Gd. In this work, the aquatic toxicity of eight doped lanthanide-based ceramic oxides (Ce0.9Gd0.1O2, LaFeO3, Gd0.97CoO3, LaCoO3, (La0.5Sr0.5)0.99MnO3, Ce0.8Pr0.2O2, (La0.6Sr0.4)0.95CoO3, LaNiO4) and one non-doped oxide (CeO2) with primary size from 23 to 590nm were evaluated in four short-term laboratory assays with freshwater crustaceans and duckweeds...
September 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28890849/trophic-analysis-of-the-fish-community-in-the-ci%C3%A3-nega-churince-cuatro-ci%C3%A3-negas-coahuila
#17
Ariana Hernández, Hector S Espinosa-Pérez, Valeria Souza
Fish diets were analyzed to evaluate the dynamic trophs of the fish community in the Churince wetland system of the Cuatro Ciénegas, where the fauna consists of nine species: endemic, native and introduced. In nine sampling events (between February 2011 and May 2014) 556 specimens of all nine species were collected. Stomach contents were analyzed and the Relative Importance Index (IRI) was calculated. The feed coefficient (Q) of the diets and the accumulated trophic diversity (Hk), as well as the amplitude of the trophic niche were evaluated...
2017: PeerJ
https://www.readbyqxmd.com/read/28888768/assessment-of-a-cricket-acheta-domesticus-bioassay-for-chequa-iflavirus-and-bunya-like-virus-from-redclaw-crayfish-cherax-quadricarinatus
#18
Kitikarn Sakuna, Jennifer Elliman, Leigh Owens
Chequa iflavirus and a bunya-like virus infect redclaw crayfish (Cherax quadricarinatus) and they may cause mortality reaching 20-40% after about three weeks after a stress event. To complete River's postulates for viruses, virus-free animals are needed. Due to a lack of chequa iflavirus and bunya-like virus-free crayfish (testing shows>85% infection rate) coupled with the facts that iflavirus and bunyaviruses are found in insects and that crickets had been successful alternate hosts for crustacean viruses before, Acheta domesticus was trialled asa bioassay animal...
September 6, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28887591/emergent-macrophytes-support-zooplankton-in-a-shallow-tropical-lake-a-basis-for-wetland-conservation
#19
Mesfin Gebrehiwot, Demeke Kifle, Ludwig Triest
Understanding the biodiversity value of littoral zones of lakes is a priority for aquatic biodiversity conservation. However, less emphasis has been given to the littoral part of tropical African lakes, with many of the previous researches focusing only on the open water side. The aim of the present study was, therefore, to investigate the impact of the littoral zone of a shallow freshwater tropical lake (Ziway, Ethiopia), dominated by two emergent macrophytes, on zooplankton community structure. We hypothesized that the wetland vegetation serves as a preferred microhabitat for zooplankton communities...
September 8, 2017: Environmental Management
https://www.readbyqxmd.com/read/28886062/energy-reserves-mobilization-strategies-of-three-decapod-species
#20
Hernán Javier Sacristán, Yamila Eliana Rodríguez, Nair De Los Angeles Pereira, Laura Susana López Greco, Gustavo Alejandro Lovrich, Analía Verónica Fernández Gimenez
In food deprivation assays, several different responses have been observed in crustaceans. However, studying energy reserves utilization among more than one species during the same starvation period has not yet been performed, particularly to discern whether the responses are due to intrinsic and/or environmental factors. We hypothesize that decapod species with similar feeding habits have the same strategies in the use of energetic reserves during starvation, even though they inhabit different environments...
2017: PloS One
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