Molecular evidence for the retention of the Thaumatopsyllidae in the order Cyclopoida (Copepoda) and establishment of four suborders and two families within the Cyclopoida

We examined for the first time, the phylogenetic position of the Thaumatopsyllidae using gene sequences of 28S and 18S rRNA, as well as COI mtDNA, obtained from two thaumatopsyllid species occurring off the coast of southern California. We also fortuitously explored the phylogenetic relationships of the Cyclopoida in more detail than Khodami et al. (2017) by including a wider sample of key families such as the Erebonasteridae and Gisellinidae. Both Maximum Likelihood and Bayesian analyses revealed the Thaumatopsyllidae is nested in the Cyclopoida and is related to the marine Speleoithonidae. In addition, 16 families of the Cyclopoida are supported to be monophyletic, but surprisingly, the Cyclopidae is paraphyletic. The Cyclopicinidae is the first monophyletic offshoot of the cyclopoid tree, followed by two derived clades. The first clade contains a monophylum consisting of the Schminkepinellidae + Giselinidae which is sister to a clade including the monophyletic Erebonasteridae and all other poecilostome families. The second clade is divided into two main, well-supported family clusters. One includes the Cyclopidae encompassing two subfamilies (Eucylopinae and Cyclopinae), but unexpectedly the parasitic Lernaeidae cluster as a sister-group to the brackish water Halicyclops (subfamily Halicyclopinae) and the Euryteinae is the sister to all the rest of Cyclopidae s. l., making the Cyclopidae paraphyletic. To resolve this conundrum, we erected two families, Euryteidae and Halic...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research

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Publication date: Available online 20 May 2019Source: Biochimica et Biophysica Acta (BBA) - General SubjectsAuthor(s): Yasunori Watanabe, Thomas A. Bowden, Ian A. Wilson, Max CrispinAbstractGlycosylation is a ubiquitous post-translational modification responsible for a multitude of crucial biological roles. As obligate parasites, viruses exploit host-cell machinery to glycosylate their own proteins during replication. Viral envelope proteins from a variety of human pathogens including HIV-1, influenza virus, Lassa virus, SARS, Zika virus, dengue virus, and Ebola virus have evolved to be extensively glycosylated. These host...
Source: Biochimica et Biophysica Acta (BBA) General Subjects - Category: Biochemistry Source Type: research
In this study, we evaluated ATA as a potential antiviral drug against ZIKV replication. The antiviral activity of ATA against ZIKV replication in vitro showed median inhibitory concentrations (IC50) of 13.87 ± 1.09 μM and 33.33 ± 1.13 μM in Vero and A549 cells, respectively; without showing any cytotoxic effect in both cell lines (median cytotoxic concentration (CC50)> 1,000 μM). Moreover, ATA protected both cell types from ZIKV-induced cytopathic effect (CPE) and apoptosis in a time- and concentration-dependent manner. In addition, pre-treatment of Vero cells with ATA for up to 72 h also resulted...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Health News CNN Local TV Source Type: news
Publication date: Available online 24 March 2018Source: Advances in Space ResearchAuthor(s): Salvatore Sarno, Maria Daniela Graziano, Giancarmine Fasano, Marco D'ErricoAbstractThis paper presents an original approach for a radar-based distributed system. The novel mission concept foresees a formation of very low altitude parasitic small satellites capturing the signal transmitted by existing LEO SARs in C and X bands. Both orbital analysis and radar performance estimation are performed. In order to increase the number of potential illuminators and achieve limited lifetimes, the receiver is supposed to be in a very LEO (alt...
Source: Advances in Space Research - Category: Science Source Type: research
Ticks carry a wide array of pathogens – and environmental changes mean they are spreadingSince the beginning of our species we have been at war. It ’s a continuous, neverending fight against the smallest of adversaries: armies of pathogens and parasites. As we have developed new ways to survive and stop them, they have evolved ever more complex and ingenious methods to thwart our efforts.Humans have faced numerous attempts to challenge our dominance on planet Earth , and from the Black Death to the Spanish flu, we have weathered them all. However, since the start of the 21st century, with its trend towards glob...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Infectious diseases Science Insects Source Type: news
V, Vossbrinck CR Abstract Structural, molecular and life cycle data are presented for two microsporidian species of the genus Berwaldia: B. singularis Larsson, 1981 (type species of the genus) and B. schaefernai Vávra and Larsson, 1994, parasites of Daphnia pulex Leydig, 1860 and Daphnia galeata Sars, 1863, respectively. Analysis of the SSU rDNA gene confirmed the species status of both species and showed that the GenBank sequence data submitted previously in GenBank for the genus Berwaldia, are from microsporidia that are not Berwaldia. Correct SSU rDNA gene sequences for B. schaefernai and B. singularis ...
Source: European Journal of Protistology - Category: Microbiology Authors: Tags: Eur J Protistol Source Type: research
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Source: Journal of Biological Regulators and Homeostatic Agents - Category: Biomedical Science Tags: J Biol Regul Homeost Agents Source Type: research
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Source: Turkish Society for Parasitology - Category: Parasitology Authors: Tags: Turkiye Parazitol Derg Source Type: research
By Drs. David Niesel and Norbert Herzog Sometimes I have to remind myself we are in the 21st Century when I hear that infectious diseases are a leading cause of death among adults and remain the leading cause of death in children. While most of these deaths occur in the developing world, a significant number occur in middle income countries. Vaccines are the most cost effective medical intervention known to prevent infectious diseases. An effective vaccine can significantly reduce the mortality associated with them. However, while we have come a long way, the reality is that we have relatively few effective vaccines. O...
Source: Science - The Huffington Post - Category: Science Source Type: news
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Source: IPS Inter Press Service - Health - Category: Global & Universal Authors: Tags: Africa Aid Development & Aid Featured Headlines Health Poverty & SDGs Women's Health Source Type: news
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