Interactional behaviors of the parasitic beetle Paussus favieri with its ant host Pheidole pallidula: the mimetic role of the acoustical signals

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Source: Insect Science - Category: Biology Authors: Tags: ORIGINAL ARTICLE Source Type: research

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This week's interesting case was donated by Drs. Lee Decollings and Dejan Nikolic. The patient is a middle-aged male with travel approximately 2 months ago to Ethiopia, Nigeria and Cameroon. In the past few years, he has also traveled broadly in sub-Saharan Africa, Asia and South America. He presented with fever and myalgias following a recent medical procedure.Diagnosis? Where did he likely acquire this infection?
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs
Nature Reviews Neurology, Published online: 26 May 2020; doi:10.1038/s41582-020-0372-0Author Correction: Zoonotic and vector-borne parasites and epilepsy in low-income and middle-income countries
Source: Nature Reviews Neurology - Category: Neurology Authors: Source Type: research
CEO of Novalead, told ET that the firm will start phase 3 randomised trials to study whether the generic drug nitazoxanide brings down the viral load of a moderately ill Covid-19 patient, and the time taken for it. The secondary endpoint of the study will be to see if patients are able to get off oxygen support after administration of the drug.
Source: The Economic Times Healthcare and Biotech News - Category: Pharmaceuticals Source Type: news
Leishmania is a parasitic protozoon responsible for the neglected tropical disease Leishmaniasis. Approximately, 350 million people are susceptible and close to 70,000 death cases globally are reported annually. The lack of effective leishmanicides, the emergence of drug resistance and toxicity concerns necessitate the pursuit for effective antileishmanial drugs. Natural compounds serve as reservoirs for discovering new drugs due to their chemical diversity. Hardwickiic acid (HA) isolated from the stembark of Croton sylvaticus was evaluated for its leishmanicidal potential against Leishmania donovani and L. major promastig...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Plant-parasitic-nematodes represent a major threat to the agricultural production of different crops worldwide. Due to the high toxicity of chemical nematicides, it is necessary to develop new control strategies against nematodes. In this respect, filamentous fungi can be an interesting biocontrol alternative. The genus Trichoderma, mycorrhizal and endophytic fungi are the main groups of filamentous fungi studied and used as biological control agents (BCAs) against nematodes as resistance inducers. They are able to reduce the damage caused by plant-parasitic nematodes directly by parasitism, antibiosis, paralysis and by th...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
The negative effects of honey bee parasitic mites and deformed wing virus (DWV) on honey bee and colony health have been well characterized. However, the relationship between DWV and mites, particularly viral replication inside the mites, remains unclear. Furthermore, the physiological outcomes of honey bee immune responses stimulated by DWV and the mite to the host (honey bee) and perhaps the pathogen/parasite (DWV/mite) are not yet understood. To answer these questions, we studied the tripartite interactions between the honey bee, Tropilaelaps mercedesae, and DWV as the model. T. mercedesae functioned as a vector for DWV...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Among the fundamental biological processes affected by microRNAs, small regulators of gene expression, a potential role in host-parasite communication is intriguing. We compared the miRNA complement of extracellular vesicles released by the free-living nematode Caenorhabditis elegans in culture to that of other adult parasitic nematodes. Expecting convergent functional roles for secreted miRNAs due to the common parasitic lifestyle of the organisms under investigation, we performed a miRNA sequence analysis as well as target search and pathway enrichment for potential mRNA targets within host immune functions. We found tha...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
Neospora caninum poses as a considerable threat to animal health and generates significant economic impact in livestock production worldwide. Here, we have investigated the mechanism that underlies the participation of the inflammasome complex and Reactive Oxygen Species (ROS) in the regulation of immune responses during N. caninum infection. For that purpose, we used in vitro (bone marrow derived macrophages) and in vivo mouse models of infection. Our results show that NLRP3 and NLRC4 receptors, alongside with ASC and Caspase-1, are required for proper activation of the inflammasome during N. caninum infection. As expecte...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
We present an analysis of carrier dynamics of the single-photon detection process, i.e., from Geiger mode pulse generation to its quenching, in a single-photon avalanche diode (SPAD). The device is modeled by a parallel circuit of a SPAD and a capacitance representing both space charge accumulation inside the SPAD and parasitic components. The carrier dynamics inside the SPAD is described by time-dependent bipolar-coupled continuity equations (BCE). Numerical solutions of BCE show that the entire process completes within a few hundreds of picoseconds. More importantly, we find that the total amount of charges stored on the...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research
Many studies reported high prevalence of H. pylori infection among patients co-infected with intestinal parasites. Molecular approach for the DNA detection of those microbes in stool have been proposed. However t...
Source: BMC Microbiology - Category: Microbiology Authors: Tags: Research article Source Type: research
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